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Process Control Valves and Desuperheating Equipment

BLAKEBOROUGH

2 Weir Valves & Controls First choice for process protection

BlakeboroughPROCESS CONTROL VALVES & DESUPERHEATING EQUIPMENT

BC 3-0406

Weir Valves & Controls

The key to the success of Weir Valves & Controls isour capability to deliver engineering solutions thatadd value to the customer’s process. We offer a totalpackage of products to meet end-to-end projectrequirements. Using our own analysis andconfiguration system, we will design and deliver theoptimum valves and controls solution to protect thevalue of the production process.

A rigorous programme of information managementmeans that the division is able to take a moreanticipatory role in defining the future needs andexpectations of the market by fully utilising theorganisation's critical resources to provide wholeprocess isolation and control valve solutions for theglobal Energy sector.

With a comprehensive range of engineered valveproducts Weir Valves & Controls have developed anextensive global installed base and expertise acrossa wide range of industry sectors:

• Power Generation• General Industrial• Oil & Gas Production• Refining• Petrochemical• Chemical• Pulp & Paper• Desalination

3Weir Valves & Controls First choice for process protection

Blakeborough PROCESS CONTROL VALVES & DESUPERHEATING EQUIPMENT

BC 3-0406

Contents

Industry applications 4

Severe service 5

Product range 6

Cage trim valves 12

X-Stream trim 16

Low flow cage trim valves 28

Top & bottom guided valves 33

Three way valves 39

Desuperheating equipment 44

Diaphragm, manual & lever operated actuators 52

Multi spring actuators 58

Actuator coding 63

Quality assurance

Weir Valves & Controls operates quality programmesto cover the full scope of their activities.Comprehensive quality systems have beendeveloped to serve the power, oil and gas andindustrial markets which they serve.

The company holds approvals to:

• ASME Section III ‘N’, ‘NPT’, ‘NV’

• ASME Section I ‘V’

• BS EN ISO 9001:1994

• API Q1 TO API LICENCES API 6D (6D-0182) ANDAPI 6A (6A-0445)

• TUV - AD MERKBLATT WRD HP 0

The Quality systems have been approved for thesupply of products to meet the requirements of thePressure Equipment Directive (PED) and compliancemodules A,D1,H,B&D have been applied incategories I through IV respectively.

The company is committed to compliance withlegislation and has an established environment andhealth and safety policy.

An ongoing commitment to customer care is metthrough the process of continuous improvementand the further development of our systems andprocesses towards meeting ISO 9001:2000.

Valve Testing Facilities

All pressure containing items are hydrostaticallytested, seat leakage tested and functionally tested.In addition, gas, packing emission, cryogenic andadvanced functional testing can be arranged.

Material testing facilities

• Non-destructive examination by radiography, ultrasonics, magnetic particle and liquid penetrant.

• Chemical analysis by computer controlled direct reading emission spectrometer.

• Mechanical testing for tensile properties at ambient and elevated temperatures, bend and hardness testing. Charpy testing at ambient, elevated and sub-zero temperatures.

Further technical information can be obtained fromour Web site: http://www.weirvalve.com

6A-04456D-0182

BLAKEBOROUGHThe Control Valve business unit have designed andmanufactured valves for in excess of 40 years. Theircontrol valve product range offers an extensivechoice in terms of size, pressure class, body/trimmaterials, and includes top, top & bottom guidedand cage guided valves. In addition they also supplya wide range of desuperheating equipment tosatisfy power and steam conditioning applications.



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Applications

The Blakeborough range has valves for applicationson process plant throughout industry where there isa requirement for automatic flow control,temperature control or pressure reducing.

Power industry

Fossil fired and nuclear power stations. Combinedcycle power stations. Desalination plants. main usesare on boiler steam, desuperheating, feedwater, feedpump leak-off, turbine systems and oil systems.

A pressure reducing anddesuperheating unitoperated by electro-hydraulic actuator. Theapplication was turbinebypass on a large powerstation.

Cage trim control valvessupplied to a power station inChina for boiler feedwaterduties.

A variety of control valves foroil systems and turbine dutieson a combined cycle gasturbine power station.

Oil and gas

Blakeborough equipment has been supplied tomany internationally known companies for highintegrity service. Production, processing andtransportation. Oil and gas offshore platforms.

Petrochemicals and processing

Hydrocracker duties.

Chemical production – melamine, ethylene,polyethylene, sulphuric/

phosphoric/hydrochloric/HF acids.

Pulp and paper plants,

Sugar industry – beet and cane.

Compressor anti-surgevalves. Part of a large orderengineered for a gas plant inAbu Dhabi.

Compressor anti-surge valves. Partof a large order engineered for agas plant in Abu Dhabi.

Hydraulically operated stainlesssteel and carbon steel valves forremotely operated offshoreplatforms in the North Sea.

Steam heating wasincorporated in these valvesfor handling polyethylene fora plant in Korea.



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Special/severe applications

Blakeborough control valves can be used over acomplete range of applications up to the mostsevere operating conditions.

Valves can be supplied in a wide range of body andtrim materials ranging from carbon steel through toexotic alloys such as Hastelloy. Trim materials anddesigns are selected to eliminate/minimise erosionand corrosion. Our range of special trim materialsinclude tungsten carbide, stellite, inconel andceramic, all of which can be supplied on liquid andgas application to greatly extend service life.

In addition to standard cage trim designs whichincorporate up to five stages of let-down, specialdesigns can be provided to meet specific processrequirements, such as the newly developed X-Stream trim.

Blakeborough silencers, developed from thecompany’s research into aerodynamic noisegeneration, can also be utilised to provide a costeffective solution to noise problems.

Blakeborough can offer solutions to:

• Blowdown/de-pressurisation

• Compressor re-cycle/anti-surge

• Gland steam control

• Pump leak-off

• Minimum flow re-cycle valves

• Multi-phase fluids (including sand contamination)

• Oil pipeline surge relief

• Cryogenic valves

• Polyethylene service (steam jacketed valves)

Research and development

Blakeborough has a continuous productdevelopment policy which includes testing of newmaterials and components with potential benefits tothe division’s product range. Examples of test workconducted are, ceramic materials, valve packingsand instrumentation – ‘smart’ positioners and mostrecently the X-Stream trim.

In addition to the Blakeborough test facilities theextensive test services of Hopkinsons and other WeirGroup companies are utilised when required.

Three-stage ceramic trim used on pump leak-offapplications. Differential pressure is 290 bar,4205 ft/in2.

Valves with low-trim outletsilencers destined for adesalination plant in theMiddle East.

Emission testing of glandpacking fitted to a valvepressurised with helium at 40bar, 580 lb/in2, at atemperature of 200˚C, 392˚F.

Seismic testing of a controlbutterfly valve for nuclear industry applications.

X-Stream severe service trim.Patent applied for.

Cage trim valves

Low Flow Applications

A range of small bore valves in globe and angle bodyconfigurations caters for small flow applications andoffers accurate control.

The design has a separate non-threaded seat ring heldin position by a guide. Non-balanced constructionallows high integrity valve shut-off.

Ratings – up to ANSI Class 4500

Globe pattern (BV502) Sizes: 15, 20 & 25 mm

Angle pattern (BV503) 1⁄2, 3⁄4 & 1 in

Forged body valve (BV504)

Medium/Large Flow Applications

This range in the cage trim series offers a system ofparts interchangeability. During service life valve trimscan be easily changed to different performancecharacteristics if process control conditions alter.

All essential components are easily removable withoutspecial tools whilst the body remains undisturbed inthe pipeline. A cage, which incorporates the flowcontrol element, also provides a plug guide givingstable support on hardened surfaces down to thepoint of seating.


Globe pattern (BV500 & BV502) Sizes: 40 – 750 mm

Angle pattern (BV501 & BV503) 11⁄2 – 30 in

Ratings – ANSI Class 900 to 4500

Globe pattern (BV990) Sizes: 40 – 750 mm

Angle pattern (BV992) 11⁄2 – 30 in



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Stepcone trim –anti-cavitation trims.

Multiflow – a lownoise design forhigh pressure dropapplications.

Spine trim – highrangeability for verysmall flow rates.

For noise reduction/cavitationtreatment cascade trim isrecommended. Up to fivestages of pressurelet-down are fitted asstandard.

Valve with multi-flow trim(anti-cavitation/low noise)fitted as standard is suitablefor general to moderatelysevere applications.

Cage trim valve for small flowapplications shown with theoptional contour trim which issuitable for most applications.



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Top & bottom guided valves

Top and bottom guided valves come in two basictypes, single seated and double seated. Both typesfeature a reversible plug which allows the fail actionof the valve to be changed on site should there be arequirement to reverse the stroke direction.

Double seated valves are specified for applicationsrequiring high capacity, low to medium pressureconditions and where a tight shut-off is notessential. Low noise trims are available.

The single seated valve design offers tight shutoff,high rangeability and can be supplied with anti-cavitation/low noise trim.


Top and bottom guided valves – double seated type:

PULL stem to open (BV800) Sizes: 40 – 400 mm

PUSH stem to open (BV801) 11⁄2 – 16 in

Top and bottom guided valves – single seated type:

PULL stem to open (BV802) Sizes: 40 – 250 mm

PUSH stem to open (BV803) 11⁄2 – 10 in

Three way valves

Valves in the three way series are most commonlyused for proportional blending or splitting of twoflows.

There are two basic configurations: The two inletconnections with common branch outlet type(BV830) allows proportional blending of two flowsinto one stream. The valve can also be used for flowsplitting duties with one inlet and two outlets if flowis in reverse.

For proportional flow splitting the two outlet withcommon inlet branch type (BV831) isrecommended. The valve is designed to divert aquantity of the process medium from one section ofthe system to another.


Mixing flow type (BV830) Sizes: 40 – 250 mm

Splitting flow type (BV831) 11⁄2 – 10 in

Top and bottom guided valve,double seated type, arrangedfor pull stem to open. Thevalve illustrated is shown withlinear contoured trim. There isa variety of other trim designoptions.

Three way valve for flow mixingapplications. The valve can alsobe used for flow splitting if theflow is in reverse.


BlakeboroughTOP & BOTTOM GUIDED VALVES BV800/1/2/3

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NormalisingStandard

PTFE Chevron

Grafoil

Bonnet forms

Standard

For applications where the temperature of thecontrolled fluid is between -18 ˚C and (O ˚F) and232 ˚C (450 ˚F). May be used with graphitepacking up to 315 ˚C (600 ˚F). Although modernpackagings are suitable for much highertemperatures it is recommended that thenormalising bonnet be fitted in cases where thetemperatures exceed the above values toaccommodate lagging of the control valve body.

Normalising

For protection of the gland packing at temperaturesabove 232 ˚C (450 ˚F) and below -18 ˚C (O ˚F)down to -100 ˚C (-150 ˚F) The bonnet is designedwith fins which dissipate the heat from process fluidand help protect the packings and actuatorassembly from high temperatures. In addition thenormalising bonnet is longer than the standardplain bonnet so that the valve can easily be laggedwithout interference with the actuator.

Bellows Seal

A positive leakproof stem seal for cases where glandleakage cannot be permitted. The standard bellowsmaterial is 321 stainless steel, although many othermaterials are available on request. The designconsists of a welded flexible steel bellows which isclamped in an extended bonnet/bonnet hood. Thiseffectively cuts out any possible leakage path aroundthe plug stem and therefore prevents emissionsfrom the valve packings. Packings are fitted in thesevalves but only act as a backup to the bellows.

Cryogenic

Used for temperatures below -100 ˚C (-150 ˚F). Thebonnet designed with a long necked section whichdistances the packing away from the process fluid.The necked section is designed with a minimumwall section to minimise heat transfer. Cold boxextension/cryogenic bonnets are also available.

Packing

Packings are selected based on fluid temperatureand fluid type. The most common packing systemmaterials are PTFE for low temperature andgraphite to high temperature. For hydrocarbonsservice and where emission levels need to becontrolled there are two further types of packingsavailable. These incorporate specially selectedmaterials and live loading to both minimiseemissions and extend packing life allowing for cyclicoperation. These packings are referred to as LTEPand HTEP. Packings have been tested to proveemission levels of less than 500 parts per millionover 50,000 cycles and under thermal cyclingconditions.

Bellows Seal Cryogenic

Silencers

Silencers/Dynamic Attenuator

This equipment is used on gas/vapour services tocontrol fluid velocity and to produce dynamicattenuation. Each silencer is designed for its specificapplication and is considered in conjunction withthe selection of the upstream control valve/trim. Inselecting the silencer design all operating conditionsare considered to ensure acceptable performance.

PTFE Chevron

is used for applications where the temperatureis between cryogenic to 232˚C (450˚F)

Grafoil

is used on high temperature applicationswhere the temperature exceeds 232˚C (450˚F)

LTEP

low emission packing, temperatures below260˚C (500˚F)

HTEP

low emission packing, temperatures above260˚C (500˚F)

Other packing types can be accommodated asrequired.


Blakeborough LOW FLOW CAGE TRIM VALVES BV502/3/4/5

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Characteristics

Linear

This characteristic provides a flow rate which isdirectly proportional to the valve lift. Theproportional relationship produces a characteristicwith a constant slope, so that with constant pressuredrop the valve gain will be the same at all flows. Thelinear valve plug is commonly specified for liquidlevel control and for flow control applicationsrequiring constant gain.

Equal Percentage

Equal increments of valve lift produce equalpercentage changes in the fluid flow. The change inflow rate is always proportional to the flow rate justbefore the change in plug position is made. Theequal percentage characteristic is generally used onpressure control applications, and on otherapplications where a large percentage of pressuredrop is normally absorbed by the system itself.Valves with this characteristic should also beconsidered where highly varying pressure dropconditions occur or high rangeability is required.

Quick Opening

This provides for maximum change in flow rate atlow valve lifts with a fairly linear relationship.Additional increases in valve lift give sharply reducedchanges in flow rate, when the valve plug nears thewide open position, the change in flow rateapproaches zero.

Intermediate

Other intermediate or special characteristics areavailable on request to meet specific controlrequirements.



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Combined Pressure ReducingDesuperheating Units

For the safe handling of very high drops and thecontrol of high velocities associated with steampower generation, the combined pressure reducingand desuperheating unit is the ideal solution. Amajor use is with back-pressure turbines supplyingexhaust steam to process. Should the turbine beshut down for any reason the steam rejected isbypassed through the valves, which serve to reduceit to the required process conditions.

The unit comprises a valve body with special outletbranch incorporating a spray water injection systemfor steam cooling and a combined mixer/silencerdevice. The actuator operated valve is automaticallypositioned by instrument control according todownstream pressure, while the spray water supplyis governed by a separate small bore control valveresponding to a downstream temperature controller.


Globe pattern (BV994) Sizes: Inlet 15 & 600 mm

Angle pattern (BV995) 1 - 24 in

Mini Desuperheating Equipment

The mini desuperheater is used in low capacityapplications where steam demand is relatively low.It consists of a spray ring with radially drilled holeswhich is mounted in the steam pipe where spraywater is injected into the steam as a fine jet.


Mini desuperheater (BV986) Sizes: 15 & 200 mm

1⁄2 - 8 in

Desuperheating equipment

Blakeborough offers an unsurpassed range ofdesuperheating equipment developed to meet allduties. A complete package is offered including therelated control systems required for efficientdesuperheating.

Variable Orifice Desuperheaters

The variable orifice desuperheater is designed toinject several finely atomised jets of spraywater intothe steam flow. The head of the desuperheater ismounted into the steam pipe, and the uniquedesign of the spray nozzles ensures that water iseasily absorbed by the steam. Control of thespraywater is achieved by a conventional actuatormounted on the spraynozzle body.


Variable orifice (BV985) Sizes: 25 & 40 mm

1 & 11⁄2 in



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Actuators and instrumentation

Pneumatic

Blakeborough manufactures two types of pneumaticactuators, diaphragm and piston. There is a choiceof mechanical handwheel and limit stops to suit allunits.

Pneumatic – diaphragm

Direct acting (A40) Sizes: 320 - 1610cm2

Reverse acting (A41) 50 - 300in2

Pneumatic – piston

Direct acting /spring return(A30) Sizes: 320 - 3220cm2

Reverse acting /spring return (A31) 50 - 600in2

Double acting/valve positioner (A36)

Electric

The Autotork Division of Hopkinsons Limitedmanufactures a full range of rotary electric actuatorsin modulating and on-off/regulating types. Thyristordrives and custom designed control systems up tonuclear industry standards are also produced.

Other types

Most other forms of actuation, such aselectrohydraulic (bottom right), can be fitted toBlakeborough valves as required.

Instrumentation

Blakeborough will select/design instrumentation tomeet the needs of the most exacting processrequirements.

One of a largeconsignment of valveswith fast operatingcontrol for duties on agas plant in AbuDhabi.

Instrumentation required to give one-second open/close on modulating and tripconditions. The cage trim type valves,supplied for steam condensate dumpapplications, were arranged with 125mm,5in, travel.

Valves fitted withAutotork modulatingactuators supplied forinstallation on acombined cycle gasturbine power plant.

Diaphragm actuators aresuitable for most applicationsand are available in direct acting or reverse acting models.

Piston actuators are used wherea high thrust is needed to operate the valve.


BlakeboroughCAGE TRIM VALVES BV500/1 & BV990/2

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Description

The Blakeborough cage trim series of control valvesBV500 and BV990, is designed to meet therequirements of most process control applications.

These ranges of control valves have been developedby Blakeborough to meet the ever increasingdemands of modern day processing plant.

The valves incorporate high integrity features ofprevious designs together with a highly flexiblephilosophy of trim design options.

There is a wide range of standard and high dutytrims available which can be fitted within the samevalve body. The options include ‘Multi-Flow’,‘Cascade’ (2 to 5 stages of letdown) and variousdesigns which can be manufactured to suit thespecific application.

At the enquiry stage Blakeborough will consider themost suitable combination of valve components foreach application. Pressure drop, noise, potential forcavitation are all considered to give the most costeffective solution for the particular application.

Design features

• Cage guided

• Wide range of trim options

• High stability

• Easy maintenance

Pressure rating

• Class 150lb to 4500lb

• PN10 to PN640

Sizes

• 40mm to 750mm

11⁄2" to 30"

Travels

• 28.5mm to 300mm

11⁄8" to 12"

End connections

• Flanged (all current standards)

• Butt weld

• Socket weld

• Screwed

• Clamped ends

Cage Trim Valvewith Multi Flow cage.

Cage Trim Valvewith Cascade Cage.


Blakeborough CAGE TRIM VALVES BV500/1 & BV990/2

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Versatility

Blakeborough Cage Trim Valves offer a wide choiceof options to meet most system requirements,eliminating or greatly reducing the multiplicity ofvalve designs that would otherwise be required.

This flexible range of valves offers an extensiveselection of trim designs, materials and sizes, and istherefore able to meet the ever increasing demandsof modern day plant. All parts are interchangeablebetween globe and angle style valves in a given sizeand pressure rating.

Parts substitution, internal inspection andmaintenance are effected with minimum trouble,the essential working components being removablewhile the body remains undisturbed in the pipeline.

• Simple, low cost, in line maintenance

• Comprehensive interchangeable parts systems

• High-stability plug guiding

• High flow capacity

Main design standards

• ASME B16.34 – Valves-Flanged, Threaded &Welding End

• ANSI FCI 70-2 – Control Valve Seat Leakage

• ASME B16.25 – Butt Welding Ends

• ASME B16.5 – Pipe Flanges & Flange Fittings

• NACE MR-01-75 Valve Materials (option)

• BS1560 – Circular Flanges for Pipes, Valves &Fittings

• BS4504 – Circular Flanges for Pipes, Valves &Fittings

Features

Pressure Ratings

• ANSI Class 150lb to 600lb (BV500 Series)

• ANSI Class 900lb to 4500lb (BV990 Series)

• Equivalent metric pressure ratings

Body

• A choice of globe or angle patterns available

• BV500 & BV990 Globe body

• BV501 & BV992 Angle body

Body Materials

The Cage Trim series valves can be produced inmost forms of castable alloys. Standard bodymaterials are:-

• Carbon steel; Grade WCB

• Stainless steel; Grade 316/304/347

• 1.1/4% chrome moly. steel; Grade WC6

• 2.1/4% chrome moly.steel; Grade WC9

• Monel

• Aluminium Bronze

• Hastelloy B/C

• Duplex/Super duplex

• Most other materials can be cast in the on sitefoundry

Trim Options

• Multi-Flow (MF) – standard

• Cascade (CS) – severe service duties

• Soft faced – for tight shut off

• Variable Stage Cascade (VS)

• Single stage Multi-Flow (SS)

• Flash cone

• Pilot balanced

• X-Stream



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Cage designs

Multi-Flow (MF) - Single stage of pressuredrop

This form of trim design is fitted as standard and issuitable for most flow control applications (refer tofront cover detail). In this design the flow is brokenup into multiple jets by a number of radical holes inthe cage. The flow is conventionally from outside toinside the trim so that jet impingement/highturbulence levels are controlled within the confinesof the valve cage. Impingement of the jets withinthe valve cage produces a more stable downstreamflow, reduces the effect of large scale separation andproduces a smaller scale turbulence structure in thevalve outlet. This in turn leads to a reduction inacoustic efficiency and changes the power spectrumof the generated noise, both of which contribute toa noise level reduction of between 15 and 20 dBAcompared to a contoured or ported trim valve.Further noise reduction in this style of trim can beachieved by reducing the size of the jets in the cageby drilling smaller holes, this design is referred to asthe Single Stage Multi-Flow (SS), and can lead to afurther 5 dBA reduction in noise level.

Cascade (CS)

(Refer to front cover for details) The Cascade valvetrim is a further advancement over the standardMulti-flow valve cage. It is used in controlapplications where high noise levels or cavitationwould be predicted, with a standard trim design.Noise, flow erosion and/or vibration can result in ahigh pressure drop/ratio application if attention tocontrolling the pressure drop is not considered. Thecascade trim has been specifically designed toeliminate these problems at source by controllingthe pressure drop through a number of discretestages of let-down. The Cascade cage ismanufactured to close tolerances and consists of aseries of sleeves. The number of sleeves (stages oflet-down) required depends upon the amount oftreatment necessary for the particular application.Each successive sleeve, has a number of radial holes,and a carefully calculated increase in flow area toensure correct apportionment of the pressure drop.Thus, the small radial jets pass through a tortuousflow path resulting in high frictional andimpingement losses. At the same time theimpingement of the jets onto the outer radiallydrilled sleeves control the shock wave formationwhich has a major influence on overall noisereduction in gas/vapour applications.

Variable Stage Cascade

Body Protection Unit

Variable Stage Cascade (VS)

Is available when multiple stages of pressureletdown are required at low valve openings. Thisdesign particularly suits applications where there isa high-pressure drop at low flows, and a reducedpressure drop at normal to maximum flow-rates.The design philosophy of the Cascade and Multi-Flow Trims designs is combined within this trim.

Body Protection Unit

This design option is utilised on flashing liquid,multi-phase fluids, and on contaminatedgas/vapour flows. The unit is designed to preventerosive outlet flow, from the valve seat, directlyimpinging onto the pressure containing body walls.

It is manufactured from hardened or hard-facedmaterial to reduce erosion rates. The design breaksthe erosive fluid flow into small jets and directs thebulk of the flow towards the valve outlet.

Soft seat

Is specified on applications where it is desirable tohave a maximum closure on the control valve. Thesoft seat design consists of a resilient seal ringclamped into the plug by a face ring. When the softseal contacts the valve seat, a lip on the seat bitesinto the face of the seal and effectively preventsleakage through the seat. The soft seat design canbe specified in both balanced and un-balanceddesigns.

Seal Rings

On balanced design valves the valve plug isdesigned to incorporate a seal ring which preventsleakage around the periphery of the valve plug.Depending upon the desired leakage andtemperature through the valve a variety of seal ringsare specified.



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Plug designs

Balanced

The balanced plug design is utilised to greatly reducefluid forces acting on the valve plug allowingeconomical actuation and stable control. Thecylindrical plug head is drilled with balancing portsto admit pressure above the plug head. The annularleakage flow between the valve plug and cage isminimised by a sealing ring retained within a pluggroove. The standard sealing rings are carbongraphite which give Class III leakage. Alternatively a‘U’ seal can be fitted to give either Class IV or Class Vleakage dependent on seating load applied by theactuator.

Solid (Unbalanced)

The design is used on relatively low-pressure dropand/or on-off applications. It generally requires theuse of much larger actuators than would be requiredon the balanced plug design and in all but smallvalve sizes is not suited to control applications.

Pilot Balanced Trim

The pilot balanced plug design incorporates twoplugs, the main larger diameter plug used for controland the smaller pilot situated inside the main plugsignificantly reduces fluid forces acting on the mainplug. This design produces a high integrity metaltemperature where a resilient seal would beunsuitable. Opening of the valve is by the pilot plug,which lifts from its seat prior to the main plug head.This produces a flow passage to equalise the pressureabove and below the valve plug, thereby significantlyreducing the fluid forces acting on the valve plug. inthe closed position the inlet pressure is admittedabove the plug to produce a high downward seatload and the only leakage path is across metal tometal seating.

Flash-cone

This plug design is specified on applications requiringa very high rangeability. At low openings the conicalplug nose fits inside a matching conical seat. Theplug nose has a number of circumferantial grooves,which produce a staging of the pressure drop as theflow passes between the small annular passagebetween the plug and the valve seat. In addition tothe increased rangeability this trim also allows thevalve to handle higher-pressure drops at low valveopenings than can be adequately handled by astandard plug design.

Carbon Ring Triple Seal Ring

‘U’ Seal


BlakeboroughX-STREAM CONTROL VALVE TRIM

BC 3-0406

The new Weir Valves & Controls X-Stream™ trim hasbeen specifically developed to eliminate theproblems of erosion, cavitation and noise on bothyour severe and problematic services. Through it’sunique flow path design, consisting of amultitude of staggered cylinders, the X-Stream™ isthe first of its kind to provide ’3D-flow control’ whichstems from the understanding and control three-dimensionality within the fluid flow as it passesthrough the valve. This is important because it is inthese highly three dimensional areas where problemsfirst start to occur.

The X-Stream™ trim itself is the product of anextensive research and development programmewhich has used a combination of provencomputational fluid dynamics (CFD) and actual flowvisualisation techniques to evaluate and eliminateproblematic areas within the design of the trim. Thismeans that the X-Stream™ trim is able to ensuresuperb fluid control and continued reliability througha more accurate and thorough prediction of the fluidflow through the valve.

As well as providing complete 3D flow control, the X-Stream™ is available in the usual variety of materialsand has been designed with long term reliableservice and ease of maintenance in mind. The discstack is designed to be separable, increasing ease ofon-site maintenance and keeping spares costs to aminimum. A leak resistant seal is achieved usingintegral, three-ringed metal seals. However, the trimis also available in a welded version if required.

Features

• 3D flow control leading to reduced noise,cavitation, erosion and vibration problems onsevere service/high-pressure applications.

• Trim design equated to up to 40 stages ofpressure letdown, keeping extreme velocities andfluid turbulence to a minimum.

• Reduced maintenance due to natural selfcleaning/anti-clogging capabilities reducingpossibility of trim blockage on contaminatedservices which would result in poor flow controland expensive maintenance costs.

• Suitable for liquid, steam and gas applications as asolution to potentially excessive noise, cavitation,vibration and erosion problems.

• Custom designed to meet individual applicationneeds, incorporating linear, equal percentage andcustom characterised flow characteristics.

• On-site maintainable due to single unit, cage-guided trim design allowing quick installation andremoval. Disc stack is separable for ease ofhandling.

• Available for retrofit or as complete control valvepackage by incorporation into both the BV500 andBV990 range of Blakeborough globe and anglevalves.

Recommended applications

• Turbine Bypass

• Choke Valves

• Minimum Pump Flow Recirculation

• Anti Surge

• Boiler Feedwater

• Attemperator Spray Valve

• Overboard Dump

A new, technologically advanced valve trimfor extreme process conditions


Blakeborough X-STREAM CONTROL VALVE TRIM

BC 3-0406

Patent applied for.

Velocity ProfilePressure drop profile

valve can be increased so that it does not fall belowthe vapour pressure, hence eliminating cavitation,see Figure 2.

The X-Stream's flow path design of using severalrows of flow obstructions to impede the flow has theeffect of controlling the energy dissipation, cause bythe drop in pressure, by forcing the fluid to impingeon itself rather than on the inner surfaces of thevalve and trim. Trim designs using a torturous pathto dissipate energy relay heavily on the impingementof the fluid on the inner surfaces of the trim and maytherefore be prone to erosion in these areas onsevere applications.

The flow path design also provides the X-Stream®

trim with its unique self-cleaning ability. As part ofthe customised design process the spacing betweenflow obstructions will be sized to allow free passageof any expected line debris and once any particleshave entered the trim there is nowhere for them tobecome lodged. However, should and unexpecteddebris become wedged between the flowobstructions the individual flow paths in the X-Stream®

trim are designed to offer several alternative routesfor the fluid so as to minimise the effect on thevalves performance.

By working in conjunction with The University ofManchester UK, Hopkinsons has used moderncomputational fluid analysis in conjunction withtraditional design methods to develop the X-Stream®

control valve trim and to ensure that it can meet thehigh performance demands of modern day, extremeprocess applications.

How it works!

The X-Steam's unique flow path is a multi-stagedesign, which has been specifically designed usingmodern analysis equipment, to safely control stagepressure drops and fluid velocity through the trim.Therefore reducing and eliminating the effects ofsuch problems as noise, cavitation and erosionwithin the control valve.

The strong relationship between pressure drop andfluid velocity means that the less pressure droptaken across the valve trim, the lower the fluidvelocities through it. As it is not practical to haveseveral valves in series to achieve large pressuredrops, the X-Stream® trim works by dividing thispressure drop over several stages of pressureletdown within the trim itself. This allows velocitiesto be controlled to within desired levels, andproblems related to high velocities, such as noiseand erosion can be reduced, see Figure 1.

This pressure drop / velocity control also means thatthe X-Stream® trim is ideally suited for controllingcavitation which is caused by the static fluidpressure falling below the vapour pressure of theliquid, therefore causing it to vapourise and formtiny bubbles of gas. These bubbles then implode asthe static pressure subsequently rises back abovethe vapour pressure, and it is this implosion whichcreates most of the damage and noise problemsassociated with cavitating applications. By usingseveral stages of pressure letdown as with the X-Stream® trim, the minimum static pressure in the

Fig 1 Fig 2



BC 3-0406

Table 1 – Materials of construction

*options for Stellite face or full Stellite available for most materials.

Table 2 – Leakage glass

Cage Plug Plug Stem Seat Service

420 ST.ST. Hardened 17-4PH ST.ST. Hardened 316 ST.ST./ Integral with Cage/ -35˚C to 399˚C17.4 PH 316 ST.ST./ -30˚F to 750˚F

420 ST.ST. Hardened 316 ST.ST. with 316 + Stellite 400˚C to 565˚CStellite face & Guide 750˚F to 1050˚F

316 ST.ST./ 316 ST.ST. with Chrome Plated NACE MR-01-7517-4PH ST.ST. Guide Diameter -35˚C to 232˚C

-30˚F to 450˚F420 ST.ST. Hardened 17-4PH ST.ST. 316 ST.ST. -35˚C to 232˚C

Hardened with PTFE Face -30˚F to 450˚FMonel K500 Monel 400 Monel 400/ Integral with Cage/ -35˚C to 500˚C

Monel K500 Monel K500 -30˚F to 932˚FHastelloy C Hastelloy C Hastelloy C Integral with Cage/Hastelloy C

Duplex Duplex Duplex Integral with cage/DuplexCeramic/420 ST.ST. 316 ST.ST. + Ceramic 316 ST.ST. 316 ST.ST. + Ceramic

Leakage Class Seal Ring Material Temperature

Class 111 Carbon Graphite -35˚C (-30˚F) to 565˚C (1050˚F)Class IV & V Carbon PTFE ‘U’ Seal -35˚C (-30˚F) to 260˚C (500˚F)Class IV & V High temp ‘U’ Seal 260˚C (500˚F) to 350˚C (660˚F)Class IV & V Virgin PTFE ‘U’Seal Cryogenic to -35˚C (-30˚F)

Class IV Carbon Triple Seal 350˚C (660˚F) to 565˚C (1050˚F)Class V & MSS-SP-61 Pilot Balanced -35˚C (-30˚F) to 565˚C (1050˚F)

Class VI Soft Face Seat -35˚C (-30˚F) to 232˚C (450˚F)Class III, IV & V None (un-balanced) Cryogenic to 565˚C (1050˚F)



BC 3-0406

Table 3 – Recommended limiting velocities

Note: Maximum outlet velocity (steam or gas) = 0.65 x sonic

Table 4 – Rangeability

Note: Maximum outlet velocity (steam or gas) = 0.65 x sonic

Metric Units US Units

Body Size (MM) Liquid (M/S) Steam or Gas (M/S) Body Size (IN) Liquid (FT/S) Steam or Gas (Ft/S)

40, 50 13.5 150 1 1⁄2, 2 44 49080, 100 13.5 150 3, 4 44 490

150, 200, 250, 300 13.5 150 6, 8, 10, 12 44 490350, 400, 450, 500 12 130 14, 16, 18, 20 39 425

≥600 8.5 120 ≥24 28 390

Body Size MF1 & MF2 MF3 & MF4 MF5 & MF6 MF7 & MF8

MM IN SS1 & SS2 SS3 & SS4 SS5 & SS6 SS7 & SS8

40 to 80 1 1⁄2 to 3 50:1 45:1 30:1 20:1100 to 200 4 to 8 65:1 55:1 45:1 35:1250 to 400 10 to 16 70:1 65:1 55:1 45:1450 to 750 18 to 30 80:1 70:1 60:1 50:1



BC 3-0406

Table 5 - BV500 & BV501 series valves - multi-flow trim design CV

*Indicates modified =% trim

SIZE TRAVEL MF1 MF2 MF3 MF4 MF5 MF6 MF7 MF8

(mm) =% LIN =% LIN =% LIN =% LIN =% LIN =% LIN =% LIN =% LIN

1 1⁄2” 40mm 28.5mm 32 35 26 28 21 22 12 14 9 9

2” 50mm 28.5mm 53 55 40 45 32 35 26 28 21 22 12 14 9 9

3” 80mm 38mm 125 145 105 124 86 104 70 86 55 66 37 43 21 27 15 15

4” 100mm 38mm 180* 235 166 200 142 168 125 116 86 106 61 72 45 45 25 30

6” 150mm 57mm 410* 455 350 420 298 385 240 315 193 243 120 162 100 130 80 100

8” 200mm 89mm 760* 760* 680 720 610 610 520 520 385 445 250 305 190 190 120 162

10” 250mm 89mm 1050 1200 900 1050 720 750 585 600 360 420 275 300 220 260

12” 300mm 89mm 1200 1400 1050 1150 725 800 570 625 420 450 400

127mm 1520 1600 1400

14” 350mm 152mm 1940 2200

127mm 1750 1900 1400 1600

89mm 980 1100

16” 400mm 178mm 2500 2750

152mm 2200 2400 1940 2200

127mm 1750 1900 1400 1600

89mm 980 1100

18” 450mm 254mm 3100 3500

178mm 2170 2450

152mm 1830 2100

127mm 1550 1750

20” 500mm 254mm 3900 4300 3100 3500

178mm 2170 2450

152mm 1830 2100

127mm 1550 1750

24” 600mm 305mm 5700 6000

254mm 4750 5000

178mm 3330 3500

152mm 2840 2990



BC 3-0406

Table 6 – BV500 series valve - cascade trim design CV

VALVE SIZE CS 2 CS 3 CS 4 CS 5 YOKE VALVE

MOD LINEAR MOD LINEAR MOD LINEAR MOD LINEAR MOUNTING TRAVEL

=% =% =% =%

1 1⁄2” 40mm & 2” 50mm 14 25 7 12 2 1⁄8” 54mm 1 1⁄8” 28.5mm

20 33 10 16 2 13⁄16” 71mm 1 1⁄2” 38mm

3” 80mm 40 48 20 24 10 12 2 13⁄16” 71mm 1 1⁄2” 38mm

60 72 30 36 15 18 3 9⁄16” 90mm 2 1⁄4” 57mm

4” 100mm 64 64 32 32 16 16 8 8 2 13⁄16” 71mm 1 1⁄2” 38mm

96 96 48 48 24 24 12 12 3 9⁄16” 90mm 2 1⁄4” 57mm

6” 150mm 108 144 54 72 27 36 13 18 3 9⁄16” 90mm 2 1⁄4” 57mm

168 224 84 112 42 56 21 28 3 9⁄16” 90mm 3 1⁄2” 89mm

8” 200mm 200 263 100 132 50 66 25 33 3 9⁄16” 90mm 3 1⁄2” 89mm

282 450 141 225 70 112 35 56 5” 125mm 5” 127mm

340 450 170 225 85 112 42 56 5” 125mm 6” 152mm

10” 250mm 370 495 185 248 92 124 46 62 5” 125mm 3 1⁄2” 89mm

530 708 265 354 132 177 66 88 5” 125mm 5” 127mm

640 850 320 425 160 212 80 106 5” 125mm 6” 152mm

12” 300mm 470 625 235 312 117 156 60 78 5” 125mm 3 1⁄2” 89mm

670 893 335 446 167 223 83 112 5” 125mm 6” 152mm

940 1250 470 625 235 312 117 156 5” 125mm 7” 178mm



BC 3-0406

Table 7 – BV990 and BV992 series valve - multi-flow trim design CV

CF = Consult factory.

Table 8 – BV990 and BV992 series valve - cascade trim design CV

VALVE SIZE MF1 MF2 MF4 MF6 VALVE

=% LINEAR =% LINEAR =% LINEAR =% LINEAR TRAVEL

1 1⁄2” 40mm 30 30 20 20 14 14 8 8 1 1⁄8” 28.5mm

2” 50mm 38 45 32 32 23 23 13 13 1 1⁄8” 28.5mm

3” 80mm 84 100 72 72 50 50 29 29 1 1⁄2” 38mm

4” 100mm 155 200 130 130 90 90 52 52 2 1⁄4” 57mm

6” 150mm - 360 280 280 195 195 112 112 2 1⁄4” 57mm

400 450 3 1⁄2” 89mm

8” 200mm 550 620 520 520 365 365 210 210 3 1⁄2” 89mm

600 700 5” 127mm

10” 250mm 830 830 750 750 525 525 300 300 3 1⁄2” 89mm

900 1100 5” 127mm

12” 300mm - - 1100 1100 770 770 440 440 3 1⁄2” 89mm

1400 1600 5” 127mm

14” 350mm 1940 2200 1600 1600 1400 1400 1200 1200 7” 175mm

16” 400mm 2500 2750 2200 2200 1750 1750 1400 1400 7” 175mm

18” 450mm 3100 3500 2800 280 2200 2200 1750 1750 10” 250mm

20” 500mm 3900 4430 3100 3100 2800 2800 2200 2200 10” 250mm

24” 600mm 5700 6000 3900 3900 3100 3100 2800 2800 12” 300mm

30” 750mm CF CF CF CF CF CF CF CF

VALVE SIZE RATING CS 2 CS 3 CS 4 CS 5 VALVE

MOD LINEAR MOD LINEAR MOD LINEAR MOD LINEAR TRAVEL

=% =% =% =%

1 1⁄2” 40mm ALL 20 33 10 12 1 1⁄18” 28.5mm

2” 50mm 900, 1500 & 2000LB 20 33 10 12 1 1⁄2” 38mm

2500LB & 4500LB 20 33 12 16 1 1⁄2” 38mm

3” 80mm 900, 1500 & 2000LB 40 48 8 10 1 1⁄2” 38mm

2500LB & 4500LB 40 48 20 24 10 12 1 1⁄2” 38mm

900, 1500 & 2000LB 60 72 12 16 2 1⁄4” 57mm

2500LB & 4500LB 60 72 30 36 15 18 2 1⁄4” 57mm

4” 100mm 900, 1500 & 2000LB 72 96 36 36 18 18 9 9 2 1⁄4” 57mm

2500LB & 4500LB 96 96 48 48 24 24 12 12 2 1⁄4” 57mm

6” 150mm ALL 108 144 54 72 27 36 13 18 2 1⁄4” 57mm

ALL 168 224 84 112 42 56 21 28 3 1⁄2” 89mm

8” 200mm 900, 1500 & 2000LB 200 263 84 112 42 56 21 28 3 1⁄2” 89mm

340 450 140 188 70 94 35 47 6” 150mm

2500LB & 4500LB 200 263 100 132 50 66 25 33 3 1⁄2” 89mm

340 450 170 225 85 112 42 56 6” 150mm

10” 250mm ALL 370 495 185 248 92 124 46 62 3 1⁄2” 89mm

ALL 640 850 320 425 160 212 80 106 6” 150mm

12” 300mm ALL 470 625 235 312 117 156 58 78 3 1⁄2” 89mm

ALL 670 893 335 446 167 223 83 112 6” 150mm

ALL 940 1250 470 625 235 312 117 156 7” 175mm



BC 3-0406

F/2

BV500

L

N

F

BV501 BV500 Extension Bonnet

M

F/2

L

Table 9 – BV500 series valves dimensions

RF = Raised Face. RTJ = Ring Type Joint. Face-to-Face and Face to Centre Line Dimensions are generally in accordance with ISA 5.75.03. CF = Consult Factory.

F

Valve Size 1 1⁄2" 2" 3" 4" 6" 8" 10" 12" 14" 16" 18" 20" 24" 30"

40mm 50mm 80mm 100mm 150mm 200mm 250mm 300mm 350mm 400mm 450mm 500mm 600mm 750mm

Up to ANSI 9 1⁄4 10 1⁄2 12 1⁄2 14 1⁄2 18 5⁄8 22 3⁄8 28 1⁄4 30 1⁄2 41 5⁄8 41 5⁄8 47 54 60 66

300 Class RF and BS4504 235 267 317 368 473 568 718 775 1057 1057 1194 1372 1524 1676

Up to ANSI 9 3⁄4 11 1⁄8 13 1⁄8 15 1⁄8 19 1⁄4 23 28 7⁄8 31 1⁄8 42 1⁄4 42 1⁄4 47 5⁄8 54 5⁄8 60 5⁄8 66 5⁄8

300 Class RTJ 248 283 333 384 489 584 733 791 1073 1073 1210 1388 1540 1692

Class 300 Butt Weld 9 7⁄8 11 1⁄4 13 1⁄4 15 1⁄2 20 24 30 30 1⁄2 41 5⁄8 41 5⁄8 47 54 60 66

251 286 337 394 508 610 762 775 1057 1057 1194 1372 1524 1676

BS, PN64, PN100, ANSI 600 9 7⁄8 11 1⁄4 13 1⁄4 15 1⁄2 20 24 30 32 1⁄4 43 5⁄8 43 5⁄8 49 1⁄4 60 63 70

Class RF Flanged & Butt Weld 251 286 337 394 508 610 762 820 1108 1108 1251 1524 1600 1778

ANSI 600 Class RTJ 9 7⁄8 11 3⁄8 13 3⁄8 15 5⁄8 20 1⁄8 24 1⁄8 30 1⁄8 32 3⁄8 43 3⁄4 43 3⁄4 49 3⁄8 60 1⁄8 63 1⁄8 70 1⁄8

251 289 340 397 511 613 765 823 1111 1111 1254 1527 1603 1781

Plain Bonnet (L) 5 13⁄16 5 13⁄16 7 9⁄16 7 5⁄8 9 15⁄16 13 3⁄16 18 11⁄16 20 3⁄16 23 3⁄8 23 3⁄8 37 7⁄8 37 7⁄8 43 7⁄8 CF

148 148 185 193 252 335 475 513 721 721 963 963 1114

Plain Bonnet (M) 4 7⁄8 4 7⁄8 5 1⁄2 6 5⁄16 7 7⁄16 9 5⁄16 CF CF CF CF CF CF CF CF

124 124 140 160 189 237

Norm Bonnet (L) 10 11⁄16 10 11⁄16 11 3⁄4 12 1⁄16 14 7⁄16 18 25 3⁄4 28 1⁄2 41 5⁄8 41 5⁄8 52 52 59 CF

272 272 298 306 368 457 655 724 1057 1057 1321 1321 1499

Norm Bonnet (M) 9 3⁄4 9 3⁄4 9 15⁄16 10 3⁄4 12 14 1⁄8 CF CF CF CF CF CF CF CF

248 248 253 273 305 359

Bellows Bonnet (L) 13 9⁄16 13 9⁄16 16 15⁄16 1615⁄16 22 9⁄16 30 1⁄16 32 33 9⁄16 CF CF CF CF CF CF

344 344 430 430 572 763 815 853

Bellows Bonnet (M) 12 5⁄8 12 5⁄8 15 5⁄8 15 5⁄8 20 1⁄16 26 3⁄16 CF CF CF CF CF CF CF CF

320 320 397 397 509 665

Extension Bonnet (L) 17 1⁄4 17 1⁄4 17 13⁄16 17 13⁄16 21 5⁄8 25 3⁄8 35 7⁄8 CF CF CF CF CF CF CF

438 438 455 455 550 645 910

Extension Bonnet (M) 16 5⁄16 16 5⁄16 16 9⁄16 16 9⁄16 20 1⁄8 21 1⁄2 CF CF CF CF CF CF CF CF

414 414 421 421 511 546

N 3 1⁄2 3 5⁄8 4 11⁄16 5 5⁄16 6 3⁄4 8 1⁄2 10 5⁄8 12 1⁄8 16 16 18 5⁄8 18 5⁄8 21 3⁄8 CF

89 92 119 135 172 216 270 308 406 406 473 473 543

Standard Travel 1 1⁄8 1 1⁄8 1 1⁄2 1 1⁄2 2 1⁄4 3 1⁄2 3 1⁄2min 3 1⁄2min 7 7 10 10 12 CF

(Also refer to Table 8) 28.5 28.5 38 38 57 89 89 89 178 178 254 254 305

Bonnet Mount Dia 2 1⁄8 2 1⁄8 2 13⁄16 2 13⁄16 3 9⁄16 3 9⁄16 5 5 5 5 5 5 5 CF

54 54 71 71 90 90 127 127 127 127 127 127 127

Extended Travels for Cascade Trim Valves

Extended travel 1 1⁄2 1 1⁄2 2 1⁄4 2 1⁄4 3 1⁄2 6 6 7 CF CF CF CF CF CF

(Refer Table 9) 38 38 57 57 89 152 152 178

Bonnet Mount Dia 2 13⁄16 2 13⁄16 3 9⁄16 3 9⁄16 3 9⁄16 5 5 5 CF CF CF CF CF CF

71 71 90 90 90 127 127 127

Plain L 8 1⁄8 8 1⁄8 10 9⁄16 9 7⁄8 13 5⁄16 18 5⁄8 22 26 CF CF CF CF CF CF

207 207 268 251 338 473 555 650

Norm L 12 3⁄4 12 3⁄4 16 15 13⁄16 18 13⁄16 24 30 34 1⁄2 CF CF CF CF CF CF

324 324 400 386 478 600 765 877



BC 3-0406


F

L

CF = Consult Factory Consult factory for ANSI Class 4500lb Rated Valves

F

L

F

L

VALVE SIZE 1 1⁄2” 2” 3” 4” 6” 8” 10” 12” 14” 16” 18” 20” 24” 30”

40mm 50mm 80mm 100mm 150mm 200mm 250mm 300mm 350mm 400mm 450mm 500mm 600mm 750mmRATINGS UP TO AND INCLUDING ANSI CLASS 1500lb

ANSI 900 12 13 1⁄4 15 1⁄2 18 1⁄2 21 7⁄8 36 3⁄4 36 44 1⁄2 56 56 68 68 1⁄2 CF CF

RF & PN160 305 337 394 470 556 934 914 1130 1422 1422 1727 1740

ANSI 900 RTJ 12 13 3⁄8 15 5⁄8 18 5⁄8 22 36 7⁄8 36 1⁄8 44 1⁄2 56 56 68 68 1⁄2 CF CF

305 340 397 473 559 937 918 1130 1422 1422 1727 1740

ANSI 1500 12 13 1⁄4 16 1⁄4 19 1⁄4 24 39 45 45 1⁄8 56 56 68 68 1⁄2 CF CF

RF & PN250 305 337 413 489 610 990 1142 1146 1422 1422 1727 1740

ANSI 1500 12 13 3⁄8 16 3⁄8 19 3⁄8 24 1⁄4 39 3⁄8 45 3⁄8 45 1⁄8 56 56 68 68 1⁄2 CF CF

RTJ 305 340 416 492 616 1001 1153 1146 1422 1422 1727 1740

ANSI 900 & 1500 PN160 12 13 1⁄4 16 1⁄4 19 1⁄4 24 39 3⁄8 45 45 1⁄8 56 56 68 68 1⁄2 CF CF

& PN250 Butt Weld 305 337 413 489 610 1001 1142 1146 1422 1422 1727 1740

Plain Bonnet 7 7⁄8 8 1⁄2 9 3⁄8 11 3⁄4 11 7⁄8 19 5⁄8 23 3⁄4 26 3⁄4 28 3⁄4 28 3⁄4 37 41 1⁄2 CF CF

200 215 238 298 302 498 602 680 730 730 940 1054

Norm Bonnet 12 5⁄16 12 7⁄8 14 16 16 5⁄16 27 v 29 1⁄2 31 1⁄2 35 1⁄2 35 1⁄2 43 1⁄2 49 1⁄4 46 3⁄8 CF

313 327 355 406 415 695 750 800 902 902 1105 1250 1178

N 3 3⁄8 3 3⁄4 5 5 7⁄8 7 3⁄8 11 1⁄4 12 3⁄8 13 13 1⁄2 13 1⁄2 17 3⁄4 19 5⁄8 22 7⁄8 CF

86 95 126 149 188 286 315 330 342 342 451 500 582

Standard Travels 1 1⁄8 1 1⁄8 1 1⁄2 2 1⁄4 2 1⁄4 3 1⁄2 3 1⁄2 REFER TO TRIM SELECTION

28.6 28.6 38 57 57 89 89

Bonnet Mount Dia 2 1⁄8 2 1⁄8 2 13⁄16 3 9⁄16 3 9⁄16 3 9⁄16 5 5 5 5 5 5 5 5

54 54 71 90 90 90 127 127 127 127 127 127 127 127ANSI CLASS 2000lb

ANSI 2000 12 14 1⁄4 20 24 32 39 44 15⁄16 52 CF CF CF 68 CF CF

Butt Weld 305 368 508 610 813 990 1142 1321 1727

Plain 7 7⁄8 8 9⁄16 9 7⁄8 12 1⁄8 13 3⁄4 19 5⁄8 22 3⁄4 26 1⁄4 CF CF CF 33 7⁄8 CF CF

Bonnet 200 217 251 309 350 499 603 667 859

Norm 12 5⁄16 13 9⁄16 15 1⁄8 16 5⁄8 20 27 3⁄8 31 1⁄2 34 1⁄8 CF CF CF CF CF CF

Bonnet 313 344 385 422 507 696 800 867

N 3 3⁄8 4 1⁄16 5 6 1⁄16 9 1⁄4 11 1⁄4 13 3⁄8 15 5⁄8 CF CF CF CF CF CF

86 103 128 154 235 286 339 397

Travel 1 1⁄8 1 1⁄8 1 1⁄2 2 1⁄4 2 1⁄4 3 1⁄2 3 1⁄2 REFER TO TRIM SELECTION

28.6 28.6 38 57 57 89 89

Bonnet Mount Dia 2 1⁄8 2 1⁄8 2 13⁄16 3 9⁄16 3 9⁄16 3 9⁄16 5 5 5 5 5 5 5 5

54 54 71 90 90 90 127 127 127 127 127 127 127 127

ANSI CLASS 2500lbANSI 2500 14 1⁄8 16 1⁄4 21 1⁄2 25 5⁄8 35 7⁄16 45 1⁄4 55 1⁄8 63 71 CF CF CF CF CF

Butt Weld 359 413 546 650 900 1150 1400 1600 1803

Plain Bonnet 8 7⁄8 10 1⁄4 11 5⁄8 15 20 1⁄4 25 1⁄2 CF CF CF CF CF CF CF CF

225 260 296 381 514 649

Norm Bonnet 14 14 7⁄8 16 5⁄8 19 7⁄8 26 3⁄8 45 1⁄4 CF CF CF CF CF CF CF CF

355 377 422 504 669 846

N 4 4 3⁄8 5 7 9 3⁄8 12 3⁄8 CF CF CF CF CF CF CF CF

100 110 128 177 238 315


28.6 28.6 38 57 57 89 89

Bonnet Mount Dia 2 13⁄16 2 13⁄16 3 9⁄16 3 9⁄16 3 9⁄16 5 5 5 5 5 5 5 5 5

71 71 90 90 90 127 127 127 127 127 127 127 127 127



BC 3-0406


F–2

M

CF = Consult Factory Consult factory for ANSI Class 4500lb Rated Valves

F–2

M

F–2

M

VALVE SIZE 1 1⁄2” 2” 3” 4” 6” 8” 10” 12” 14” 16” 18” 20” 24” 30”

40mm 50mm 80mm 100mm 150mm 200mm 250mm 300mm 350mm 400mm 450mm 500mm 600mm 750mmRATINGS UP TO AND INCLUDING ANSI CLASS 1500lb

ANSI 900 6 7 8 1⁄8 9 1⁄4 12 13⁄16 CF CF CF CF CF CF CF CF CF

RF & PN160 152 178 206 235 310

ANSI 900 RTJ 6 7 1⁄16 8 13⁄16 9 5⁄16 12 1⁄4 CF CF CF CF CF CF CF CF CF

152 179 208 237 311

ANSI 1500 6 7 8 1⁄2 9 5⁄8 13 1⁄4 CF CF CF CF CF CF CF CF CF

RF & PN250 152 178 216 244 337

ANSI 1500 6 7 1⁄16 8 9⁄16 9 11⁄16 135⁄16 CF CF CF CF CF CF CF CF CF

RTJ 152 179 218 246 338

ANSI 900 & 1500 PN160 6 6 5⁄8 8 1⁄2 9 5⁄8 13 1⁄4 CF CF CF CF CF CF CF CF CF

& PN250 Butt Weld 152 168 216 244 337

Plain Bonnet 6 7⁄8 7 7 7⁄16 9 1⁄16 CF CF CF CF CF CF CF CF CF CF

175 178 188 230

Norm Bonnet 11 3⁄8 11 7⁄16 12 13 3⁄8 CF CF CF CF CF CF CF CF CF CF

288 290 304 339

Standard Travels 1 1⁄8 1 1⁄8 1 1⁄2 2 1⁄4 2 1⁄4 3 1⁄2 3 1⁄2 REFER TO TRIM SELECTION

28.6 28.6 38 57 57 89 89

Bonnet Mount Dia 2 1⁄8 2 1⁄8 2 13⁄16 3 9⁄16 3 9⁄16 3 9⁄16 5 5 5 5 5 5 5 5

54 54 71 90 90 90 127 127 127 127 127 127 127 127

ANSI CLASS 2000lbANSI 2000 6 7 1⁄4 10 12 16 19 1⁄4 22 1⁄4 24 3⁄4 CF CF CF CF CF CF

Butt Weld 152 184 254 305 407 495 565 629

Plain 6 7⁄8 7 7 13⁄16 9 7⁄16 12 3⁄16 16 1⁄4 CF CF CF CF CF CF CF CF

Bonnet 175 178 199 239 310 413

Norm 11 3⁄8 12 13 1⁄8 13 7⁄8 CF CF CF CF CF CF CF CF CF CF

Bonnet 288 306 333 352


28.6 28.6 38 57 57 89 89

Bonnet Mount Dia 2 1⁄8 2 1⁄8 2 13⁄16 3 9⁄16 3 9⁄16 3 9⁄16 5 5 5 5 5 5 5 5

54 54 71 90 90 90 127 127 127 127 127 127 127 127ANSI CLASS 2500lb

ANSI 2500 6 7⁄8 8 1⁄8 10 3⁄4 12 13⁄16 17 3⁄4 22 5⁄8 27 9⁄16 31 1⁄2 CF CF CF CF CF CF

Butt Weld 175 207 273 325 450 575 700 800

Plain Bonnet CF CF CF CF CF CF CF CF CF CF CF CF CF CF

Norm Bonnet CF CF CF CF CF CF CF CF CF CF CF CF CF CF


28.6 28.6 38 57 57 89 89

Bonnet Mount Dia 2 13⁄16 2 13⁄16 3 9⁄16 3 9⁄16 3 9⁄16 5 5 5 5 5 5 5 5 5

71 71 90 90 90 127 127 127 127 127 127 127 127 127

BV990

L

N

F

M

F/2

F/2BV992



BC 3-0406

Table 12 – Approximate weight Kg with multi-flow cages

CF = Consult factory

SIZE BONNET UP TO 300LB 600LB RATING 900 & 1500LB RATING 2000LB RATING 2500LB RATING

STYLE (PN 40) (PN 100) (PN150 & PN250) (PN 330) (PN 420)

FLG BW FLG BW FLG BW FLG BW FLG BW

40mm 1 1⁄2 Plain 20 18 22 18 24 20 N/A 24 32 27

Norm 23 21 25 21 29 25 N/A 29 37 32

Bellow 30 28 32 28 N/A N/A N/A N/A N/A N/A

50mm 2” Plain 21 18 30 18 42 34 N/A 42 51 43

Norm 24 21 33 21 47 39 N/A 47 56 48


80mm 3” Plain 58 30 60 30 61 50 N/A 57 84 70

Norm 62 34 64 34 71 60 N/A 67 93 79


100mm 4” Plain 67 52 88 52 205 177 N/A 197 292 242

Norm 72 58 94 58 215 187 N/A 207 310 260


150mm 6” Plain 148 108 179 108 320 279 N/A 430 577 495

Norm 153 114 185 114 340 299 N/A 480 622 540


200mm 8” Plain 230 316 331 316 702 655 N/A 805 1150 999

Norm 235 323 338 323 735 685 N/A 860 1208 1057


250mm 10” Plain 400 510 545 510 1300 1198 N/A 1670 CF CF

Norm 452 588 630 588 1367 1265 N/A 1789 CF CF


300mm 12” Plain 540 495 597 548 1800 1655 N/A 2098 CF CF

Norm 605 562 679 610 1900 1755 N/A 2199 CF CF


400mm 16” Plain 1571 1440 1709 1610 2200 CF N/A CF CF CF

Norm 1602 1471 1752 1652 2290 CF N/A CF CF CF

Bellow 1740 1609 CF CF N/A N/A N/A N/A N/A N/A

500mm 20” Plain CF CF 3370 CF CF CF N/A CF CF CF

Norm CF CF 3440 CF CF CF N/A CF CF CF

Bellow CF CF CF CF N/A N/A N/A N/A N/A N/A

600mm 24” Plain CF CF 5010 CF CF CF CF CF CF CF

Norm CF CF 5090 CF CF CF CF CF CF CF

Bellow CF CF CF CF CF CF CF CF CF CF



BC 3-0406

Table 13 – End connection details for butt weld end valves (mm)

VALVE SIZE BV500 – ALL RATINGS BV990 – UP TO & INCLUDING BV990 – 2000LB RATING BV990 – 2500LB RATING

1500LB (PN 250) (PN 330) (PN 420)

ID OD ID OD ID OD ID OD

40mm (1 1⁄2”) 20 70 38 89 38 89 38 89

50mm (2”) 38 80 38 85 38 95 38 95

80mm (3”) 65 105 65 115 75 130 75 145

100mm (4”) 90 145 85 155 85 145 90 185

150mm (6”) 145 200 140 205 125 235 130 265

200mm (8”) 185 255 190 310 200 340 195 350

250mm (10”) 250 315 255 390 255 450

300mm (12”) 300 370 325 515

400mm (16”) 370 460

500mm (20”)

600mm (24”)

750mm (30”)


BlakeboroughLOW FLOW CAGE TRIM VALVES BV502/3/4/5

BC 3-0406

Design features

• Top cage guided


• High stability

• Easy maintenance

Pressure rating

• Class 150LB to 4500LB

Equivalent metric ratings

Sizes

• 15mm to 25mm

1⁄2" to 1"

End connection sizes 40mm (11⁄2") & 50mm (2")can be supplied

Travels

• 10mm to 25mm

3⁄8" to 1"

Features

• Flanged

• Butt weld

• Socket weld

• Screwed

BV502 series valve fitted with contour trim and normalising bonnet

Description

This versatile range of globe and angle valves availablein sizes 15mm to 25mm (1⁄2" to 1") offer a wide varietyof trim selections to suit all flow conditions in a non-balanced construction. The body design can besupplied in cast or forged materials.

There is a wide range of standard and high duty trimsavailable that can be fitted within the same valve body.Flow characterisation is determined by the shape of thevalve plug, or in the ‘Multi-flow’ trim, a radial patternof holes in the cage is arranged to give the requiredvalve characteristic.

At the enquiry stage Blakeborough will consider themost suitable combination of valve components foreach application. Pressure drop, noise, potential forcavitation are all considered to give the most costeffective solution for the particular application. Partssubstitution, internal inspection and maintenance canbe performed with minimum trouble, the essentialworking components being removable while the bodyremains in the pipe line.

Body

• A choice of globe or angle patterns is available

• BV502 Globe Body (cast)

• BV504 Globe Body (forged)

• BV503 Angle Body (cast)

• BV505 Angle Body (forged)

Body materials

The valves can be produced in most alloys. Standardcast body materials are:-

• Carbon steel; Grade WCB

• Monel

• Stainless steel; Grade 316/304/347

• Aluminium Bronze

• Chrome moly steel; Grade WC5, WC6 & WC9

• Hastelloy B/C

• Duplex

• Most other materials can be produced

Main design standards

• ANSI B16.34 – Valves-Flanged, Threaded & WeldingEnd

• ANSI FCI 70-2 – Control Valve Seat Leakage

• ANSI B16.25 – Butt Welding Ends

• ANSI B16.5 – Pipe Flanges & Flange Fittings

• NACE MR-01-75 Valve Materials

• BS1560 – Circular Flanges for Pipes, Valves & Fittings

• BS4504 – Circular Flanges for Pipes, Valves & Fittings



BC 3-0406

Trim design

Contour

The contour trim is suitable for most flow applicationsand is provided as standard in most valves. The valvecharacteristic is determined by the contour of the plughead. The contour trim is available in eight trim sizeswith equal percentage, linear or quick openingcharacteristics. The trim is available as a metal to metalor for tight shut off a soft face design is available.

Spline

The spline trim is designed specifically for accuratecontrol of very small flows. The design consists of along parallel nosed plug with a accurately cut “V”notch cut down the centre. The linear movement of thevalve plug exposes a variable amount of the notch tothe flow. The plug head shank is usually made fromstellite or other hard wearing materials for gallingresistance and to prevent erosion of the plug tip. Theactual characteristic derived from the “V” notch ismodified equal percentage. The spline trim is availablein either metal to metal design or where bubble tightshut off is required a soft face is fitted.

Multi-flow (single stage of pressure drop)

In this design flow is broken up into multiple jets by anumber of radial holes drilled in the cage. The flow isconventionally from outside to inside the cage so thatjet impingement/high turbulence levels are controlledwithin the confines of the valve cage. The flow jetsimpinge together in the centre of the cage boreproducing a more stable downstream flow which inturn reduces the effect of large scale separation thusproducing a smaller scale turbulence structure in thevalve outlet. This results in a reduction in acousticefficiency, changes the power spectrum of thegenerated noise both of which contribute to noise levelreduction of between 15 and 20 dBA, compared to acontoured trim valve.

Step cone

This design is offered where a high degree of pressurebreakdown is required on low flows. The plug head isdesigned with an extended shank having a number ofstepped grooves down its length. As the flow mediumpasses the plug head the pressure drop is broken downin stages across the labyrinth steps of the plug. Theplug head shank is usually made from stellite or othersuch hard wearing materials to prevent erosion of theplug tip.

Contour trim Soft face contour trim

Spline Spline with diffuser

Multi-flow trim Step cone trim

2-stage trim with diffuser

3-stage trim with diffuser

2 & 3 Stage Pressure Letdown Trim

These trim designs are suited to applications where ahigh degree of pressure letdown is required toeliminate cavitation on low flow applications. The trimis designed so that flow passes through each stage ofthe trim. The design requires a very tight tolerancebetween the plug and seat to eliminate anular flowbetween the plug and seat.

Body Protection Unit (Diffuser)

Is specified on globe valves where a high pressureacross the valve leads to high velocity jet flow fromthe trim impinging directly onto the valve body wall.The seat diffuser deflects the jet away from the bodywall towards the valve outlet. The seat diffuser isconstructed of hardened steel which is more resistantto the effects of jet impingement than the valve bodywall. This feature is particularly useful on flashingflows where high velocity two phase flows can leadto body erosion.



BC 3-0406

TRIM TYPE

CONTOUR

SPLINE

STEP CONE

MULTIFLOW

SOFT FACE

STAGED TRIM

ALL TRIMS

Valve selection guideline

Valve flow co-efficient

All valves are sized using the valve flow co-efficient,CV, in accordance with ISA 75.01 as detailed in theBlakeborough sizing and selection manual. DesignCV values are given in table 5.

Body Selection

The valve body size and style is selected on the basisof supporting the selected trim design and design CV.

In addition consideration is made of the velocity andthe required pressure drop application. Liquidvelocities are limited mainly due to erosion

TABLE 1 – Standard trim material combinations

PLUG

316 ST.ST.

316 ST.ST. WITH STELLITE FACE

316 ST.ST. WITH FULL STELLITE

316 ST. ST. WITH STELLITE


316 ST.ST.


CERAMIC WITH ST.ST.

SEAT

316 ST.ST.


316 ST.ST. WITH FULL STELLITE

316 ST. ST. WITH STELLITE

INTEGRAL WITH GUIDE

316 ST.ST. WITH PTFE


CERAMIC WITH ST.ST.

CAGE

TEMP 400˚C (750˚F)

MAX

17-4PH ST.ST.

HARDENED

CAGE

TEMP 400˚C (750˚F) &

ABOVE

420 ST.ST.

HARDENED

For services below -3.5oC (-30oF), all 316 ST. ST. construction with PTFE seals.The above table shows standard ST. ST. combination. Many other materials can be used depending on the application.

TABLE 2 – Recommended limiting inlet velocities for control valves

VALVE SIZE

15,20 & 25MM1⁄2”, 3⁄4” & 1”

LIQUID M/S

13.5

LIQUID FT/S

45

STEAM OR GAS M/S

115

STEAM OR GAS FT/S

375

MAX OUTLET

(STEAM OR GAS)

0.65 X SONIC

Note: 0.3 sonic for low noise applications

TABLE 3 – Rangeability for control valves

VALVE SIZE

15,20 & 25MM1⁄2”, 3⁄4” & 1”

CONTOUR(METAL & SOFT

FACED)

50.1

SPLINE(METAL & SOFT

FACED)

100.1

STEP CONE

50.1

MULTI-FLOW

30.1

STAGE TRIM

100.1

Note: Control at openings of less than 5% is not recommended for prolonged periods

considerations, whereas gas/vapour flow velocitiesare limited for trim stability noise and vibrationconsiderations.

Trim Selection

The selection criteria of the valve trim ranges fromvalve flow co-efficient, rangeability, pressure drop,cavitation, flashing and noise consideration.Blakeborough sizing and selection manual detailsthe various calculation methods and selectionlimitations for each trim design.



BC 3-0406

TRIM STYLE

METAL FACED

METAL FACED-LAPPED SEATS

SOFT SEAT

MAXIMUM ALLOWABLE LEAKAGE

0.01% OF RATED CAPACITY

0.0005ML/MIN OF WATER PER INCH OF PORT

PER PSI PRESSURE DROP

BUBBLE TIGHT

TABLE 4 – Control valve leak rates in accordance with ANSI/FCI 70-2-1976

TABLE 6 – Valve weights (Kg)

VALVE SIZE

AND

BODY STYLE

UP TO 25MM

(1”) CAST

BV502 & BV503

UP TO 25MM

(1”) FORGED

BV504 & BV505

BONNET TYPE

PLAIN

NORMALISING

BELLOWS

CRYOGENIC

PLAIN

NORMALISING

BELLOWS

CRYOGENIC

UP TO 600LB

(PN100) RTG

FLG B.W

16 8

19 11

25 17

24 16

26 18

29 21

35 17

34 26

UP TO 1500LB

(PN250) RTG

FLG B.W

18 8

20 11

26 17

25 26

28 18

30 21

36 27

35 26

UP TO 2500LB

(PN420) RTG

FLG B.W

NA NA

NA NA

NA NA

NA NA

30 20

32 23

NA NA

37 28

UP TO 4500LB

RTG

FLG B.W

NA NA

NA NA

NA NA

NA NA

35 25

37 28

NA NA

42 32

TABLE 5 – Design CV values

CONTOUR TRIM

TRIM

SIZE

MC01

MC00

MC0

MC1

MC2

MC3

MC4

MC5

MC6

MC7

MC8

MC9

MC10

MC11

MC12

MC13

MC14

MC15

VALVE

SIZE

ALL

SIZES

VALVE

SIZE

MOD=%

3.2

2

1.26

0.63

0.4

0.25

0.16

0.1

0.063

0.04

0.025

0.016

0.01

0.0063

0.004

0.0025

0.0016

0.001

TRAVEL TRIM

SIZE

SC4

SC5

SC6

SC7

SC8

SC9

SC10

LINEAR

4.5

3

1.7

1

0.63

0.4

0.25

25mm (1”)

TRAVEL TRIM

SIZE

MF1

MF2

MF3

MF4

=%

12

8

5.6

3.2

LINEAR

12

8

5.6

3.2

TRAVEL

25 (1”)

25mm (1”)

25mm (1”)

19mm (3⁄4”)

MULTIFLOWSTEP CONESPLINE/M SPLINE

TRIM

SIZE

DC1

DC2

DC3

DC4

DC5

DC6

DC7

DC9

LINEAR

& =%

13.5

10

7

4.5

3

1.7

1

0.4

QUICK

OPEN

13.5

7

4.5

25 M

M20

MM

15 M

M

NO

T AV

AILA

BLE

ASM

/SPL

INE

STAN

DAR

D S

PLIN

E 25

mm

(1”)

MU

LTI S

TAG

E SP

LIN

E 19

mm

(3 ⁄4”)

TRAVEL

25mm

(1”)

ANSI LEAKAGE CLASS

CLASS IV

CLASSES V

CLASS VI



BC 3-0406

TABLE 7 – Valve dimensions

191

7 1⁄2

194

7 5⁄8

197

7 3⁄4

235

9 1⁄4

267

10 1⁄2

203

8

206

8 1⁄8

210

8 1⁄4

251

9 7⁄8

286

11 1⁄4

273

10 3⁄4

273

10 3⁄4

273

10 3⁄4

305

12

340

13 3⁄8

187

7 3⁄8

187

7 3⁄8

187

7 3⁄8

251

9 7⁄8

28611⁄14

105

4 1⁄8

105

4 1⁄8

105

4 1⁄8

127

5

143

5 5⁄8

197

7 3⁄4

197

7 3⁄4

197

7 3⁄4

305

12

33713⁄14

105

4 1⁄8

105

4 1⁄8

105

4 1⁄8

152

6

168

6 5⁄8

151

6

151

6

151

6

151

6

151

6

130

5 1⁄8

130

5 1⁄8

130

5 1⁄8

130

5 1⁄8

130

5 1⁄8

206

8 1⁄8

206

8 1⁄8

206

8 1⁄8

206

8 1⁄8

206

8 1⁄8

185

7 5⁄16

185

7 5⁄16

185

7 5⁄16

185

7 5⁄16

185

7 5⁄16

333

13 1⁄8

333

13 1⁄8

333

13 1⁄8

333

13 1⁄8

333

13 1⁄8

311

12 1⁄4

311

12 1⁄4

311

12 1⁄4

311

12 1⁄4

311

12 1⁄4

375

14 3⁄4

375

14 3⁄4

375

14 3⁄4

375

14 3⁄4

375

14 3⁄4

406

16

406

16

406

16

406

16

406

16

75

3”

F F F F F/2 F F/2 L M L M L M L M

BV502/503 CAST BODIES

15mm1⁄2“

20

3/4

25

1

40 x 25 x 40

1.5 x 1 x 1.5

50 x 25 x 50

2 x 1 x 2

NO

MIN

ALVA

LVE

SIZE

UP

TO A

NSI

300

LBR.

F. (

BSPN

40) BUTT WELD

UP TOANSI 600 LB(BS PN 250)

BUTT WELDANSI 900& 1500 LB

(BS PN 160 & 250)

PLAIN NORM BELLOWS CRYOGENIC N (MAX)

ANSI

900

LB

&15

00 LB

R.F.

& R

TJ(B

S PN

160

& 2

50)

ANSI

600

LB

R.F.

& R

TJ(B

S PN

64

& 1

00)


238

9 3⁄8

238

9 3⁄8

238

9 3⁄8

318

12 1⁄2

318

12 1⁄2

318

12 1⁄2

318

12 1⁄2

318

12 1⁄2

318

12 1⁄2

318

12 1⁄2

318

12 1⁄2

318

12 1⁄2

318

12 1⁄2

318

12 1⁄2

318

12 1⁄2

160

6 5⁄16

160

6 5⁄16

160

6 5⁄16

160

6 5⁄16

160

6 5⁄16

330

13

330

13

330

13

330

13

330

13

165

6 1⁄2

165

6 1⁄2

165

6 1⁄2

165

6 1⁄2

165

6 1⁄2

228

9

228

9

228

9

228

9

228

9

228

9

228

9

228

9

228

9

228

9

283

11 1⁄8

283

11 1⁄8

283

11 1⁄8

283

11 1⁄8

283

11 1⁄8

283

11 1⁄8

283

11 1⁄8

283

11 1⁄8

283

11 1⁄8

283

11 1⁄8

85

3 3⁄8”

F F F F/2 F F/2 L M L M

BV504/505 FORGED BODIES

151⁄2

203⁄4

25

1

40 x 25 x 40

1.5 x 1 x 1.5

50 x 25 x 50

2 x 1 x 2

NO

MIN

ALVA

LVE

SIZE

UP

TO IN

CL.

ANSI

150

0 LB

R.F.

RTJ

(BS

PN40

) BUTT WELDUP TO

ANSI 2500 LB(BS PN 420)

BUTT WELDANSI 4500 LB PLAIN NORM N (MAX)

ANSI

250

0 LB

R.F.

& R

TJ(B

S PN

420

)

BV502 valve BV503 valve

L

N

F

M

F/2

F/2


Blakeborough TOP & BOTTOM GUIDED VALVES BV800/1/2/3

BC 3-0406

Description

The Blakeborough range of top and bottom guidedvalves are suited to a wide range of general processapplications, such as water, steam, oil, gases andthe majority of chemical services. The basic designincorporates a standard contour or ’V’ Port plugform as the control element, however, the valvesconstruction allows more specialised trims to befitted.

The BV800 and BV801 double seated valve offershigh capacity on low to medium pressure dropapplications.

The design is inherently balanced allowing the useof diaphragm actuators for the majority ofapplications. For higher pressure drop conditionsthe valve can be supplied with multi-flow sleevesto give low pressure recovery. The design is notsuited for tight shut-off applications.

The BV 802 and BV 803 series are single seatedvalves. They offer high rangeability, tight shut-offcapability and can also be fitted with anti-cavitation/low noise trims.

Design features

• Top and bottom guided


• High capacity (BV800/1)

• Excellent rangeability

• Action is field reversible

• High integrity closure (BV802/3)

• Inherently characterised trim

Pressure rating


• PN10 to PN250

Sizes

• 40mm to 600mm (BV800/1)

1 1⁄2” to 24” (BV800/1)

• 40mm to 250mm (BV802/3)

1 1⁄2” to 10” (BV802/3)

Travels

• 28.5mm to 152mm

1 1⁄8” to 6”

End connections

• Flanged

• Butt weld

• Socket weld

• Screwed

Top and bottom guided valve, double seated type, arranged for pull stem toopen. The valve illustrated is shown with linear contoured trim. There is a variety of other trim design options.

Top and bottom guided valve, single seated type, arranged for pull stem to open.The valve illustrated is shown with linear contoured trim. There is a variety ofother trim design options.



BC 3-0406

Trim options

Contour/”V” Port

Several trim options are available as standard inthe top and bottom guided series of valves. Thecontour “V” port trim presents a smooth profile tothe flow leading to relatively high pressurerecovery which is ideal for low pressure drop flowcontrol applications. These designs are suitable forthe majority of control applications.

Characteristics Seat Options

• Equal percent • Metal to metal

• Linear • Resilient seal

• Quick open • Hard faced

Multi-flow Trim

The multi-flow trim is designed for applicationswhere customers require the top and bottomguided style of valve associated with the benefitsof the traditional cage guided valve (listed right.)

BV802/3 valve with soft face trim.BV802/3 valve with multi-flow trim.

BV800/1 valve with multi-flow trim.Standard contour trims. Plugs can be inverted to change the ’fail’ action of the valve.

• Low noise

• Anti cavitation

• Low pressure recovery

The trim option can also be inverted if it is desiredto change the actuator action.

BV802/BV803 Valves with soft face trim

The soft face trim option is specified onapplications where bubble tight closure isrequired. As such it is only available on the singleseated valves where the un-balanced nature of thevalve allows a better class of seat closure.

The soft seal is fitted into the plug head andretained by a shroud. The seat is designed with alip so that when the plug head contacts the seatthe seat face is deformed to produce a highintegrity seal.



BC 3-0406

Valve selection guidelines


All valves are sized using the valve flow co-efficient,CV, in accordance with ISA 75.01 as detailed in theBlakeborough sizing and selection manual. DesignCV values are given in table 5.

Body Selection

The valve body size and style is selected on the basisof supporting the selected trim design and CV. Inaddition consideration is made of the velocity and the

required pressure drop application. Liquid velocitiesare limited mainly due to erosion considerations,whereas gas/vapour flow velocities are limited fortrim stability noise and vibration considerations.

Trim Selection

The selection criteria of the valve trim ranges fromvalve flow co-efficient, rangeability, pressure drop,cavitation, flashing and noise consideration.Blakeborough sizing and selection manual detailsthe various calculation methods and selectionlimitations for each trim design.

TABLE 1 – Standard material combinations

TABLE 2 – Trim material combinations

PTFE gaskets are suitable for temperatures up to 232oC (450oF), above this material specifically considered. Materials listed are standard combination only.Any other material combination can be accommodated. Trim materials specified can be supplied to conform to NACE Spec. MR-01-75.Material can be supplied to UOP spec. Other material combinations are available.



Body BonnetBottom Flange

Body Gasket

BodyStuds/Nuts

Carbon Steel –Cast or

Wrought

316 ST.ST.

B7/2H

Chrome MolySteel

316 ST.ST.

B7/2H orB16/7

304 or 304LST.ST.

316 ST.ST.

B8/8

347 ST.ST.

316 ST.ST.

B8/8

316 ST.ST.

316 ST.ST.

B8/8

HastelloyB or C

PTFE

B8/8

Monel

PTFE

B8/8

Alloy 20

PTFE

B8/8

Duplex

PTFE

B8/8

Plug

Seat

Stem

Guide Bush

Packing Parts

316 ST.ST.

316 ST.ST.

316 ST.ST.

440C ST.ST.

316 ST.ST.

316 StelliteFaced

316 StelliteFaced

316 ST.ST.

440C ST.ST.

316 ST.ST.

316 FullStellite

316 FullStellite

316 ST.ST.

Stellite

316 ST.ST.

Hastelloy B/C

Hastelloy B/C

Hastelloy B/C

Stellite

Hastelloy B/C

Monel 400

Monel 400

Monel 400

Monel K500

Monel 400

Alloy 20

Alloy 20

Alloy 20

Stellite

Alloy 20

17-4PH ST.ST.

17-4PH ST.ST.

316 ST.ST.

440C ST.ST.

316 ST.ST.

NACE316 ST.ST.

316 ST.ST.

316 ST.ST.

Stellite

316 ST.ST.

Duplex

Duplex

Duplex

Stellite

Duplex

VALVE SIZE

40 & 50mm(1 1⁄2” & 2”)

80 & 100mm(3” & 4”)

150 & 200mm(6” & 8”)

250 to 600mm(10” to 24”)

LIQUID m/s

12

11

10.5

7.5

LIQUID ft/s

40

36

30

25

STEAM or GAS m/s

105

100

90

70

STEAM or GAS ft/s

350

315

275

225

MAX OUTLET(STEAM or GAS)

0.65 x SONIC



BC 3-0406

BV800 & BV801 DOUBLE SEATED BV802 & BV803 SINGLE SEATED

TABLE 4 – Rangeability for control valves

Note: Standard/inherant rangeability of linear characteristic trims is 20:1 corresponding to a valve opening of 5%. Control at openings less than 5% is notrecommended for prolonged periods.

TABLE 5 – Design CV values


BV800 & BV801 DOUBLE SEATED BV802 & BV803 SINGLE SEATED

EQUAL %

40mm (1 1⁄2”)50mm (2”)80mm (3”)

100mm (4”)150mm (6”)200mm (8”)

250mm (10”)300mm (12”)400mm (16”)500mm (20”)600mm (24”)

326014025552078013501700256051007400

2032

1001403755207801350210025605100

132060

100255375520780170021002560

28521151703405509001350CFCFCF

202876115240340550900CFCFCF

13205276

170240340555CFCFCF

TRIM TYPE BODY SIZE FULRATE MIDRATE LORATE FULRATE MIDRATE LORATE

LINEAR

40mm (1 1⁄2”)50mm (2”)80mm (3”)

100mm (4”)150mm (6”)200mm (8”)

250mm (10”)300mm (12”)400mm (16”)500mm (20”)600mm (24”)

3765140255575

100014401850280055007950

2537

100140415575

10001440220028005500

172565

100255415575

1000185022002800

30521101903906509501430

CFCFCF

203085110285390650950CFCFCF

13205285190285390650CFCFCF

QUICK OPEN

40mm (1 1⁄2”)50mm (2”)80mm (3”)

100mm (4”)150mm (6”)200mm (8”)

250mm (10”)300mm (12”)400mm (16”)500mm (20”)600mm (24”)

3765140255575

100014401850280050008200

2537

100140415575

10001440220028005800

172565

100255415575

10001850220

2800

305812523045080012501650

CFCFCF

2530801253404508001250

CFCFCF

15255880

230340450800CFCFCF

VALVE SIZE

40 & 50mm(1 1⁄2” & 2”)

80 & 100mm(3” & 4”)

150 & 200mm(6” & 8”)

250 to 600mm(10” to 24”)

FULRATE

30:1

40:1

45:1

50:1

MIDRATE

30:1

30:1

40:1

45:1

LORATE

20:1

30:1

30:1

30:1

FULRATE

40:1

60:1

70:1

80:1

MIDRATE

40:1

50:1

60:1

70:1

LORATE

30:1

40:1

50:1

60:1



BC 3-0406

TABLE 6 – Control valve leak rates in accordance with ANSI/FCI 70-2-1976

CF = Consult factory. Consult factory for dimensions of 900 & 1500 LB rated valves


Up to ANSI 300lb and PN40 (F)

ANSI 600lb and PN100 (F)

Up to ANSI 300lb Ring Joint (F)

ANSI 600lb Ring Joint (F)

Up to 300lb Butt/Socket/SCW (F)

Up to 600lb Butt/Socket/SCW (F)

Plain (J)

Normalising (J)

Bellows (J)

Plain (L)

Normalising (L)

Bellows (L)

BV800/1 (N)

BV802/3 (N)

Valve Travel

BV 800/

BV 801

BV 802/

BV 803

40mm(1 1⁄2")

235 (9 1⁄4)

251 (9 7⁄8)

248 (9 3⁄4)

251 (9 7⁄8)

251 (9 7⁄8)

251 (9 7⁄8)

191 (7 1⁄2)

311 (12 1⁄4)

365 (14 3⁄8)

159 (6 1⁄4)

283 (11 1⁄8)

337 (13 1⁄4)

156 (6 1⁄8)

127 (5)

28.6 (1 1⁄8)

50mm(2")

267 (10 1⁄2)

286 (11 1⁄4)

283 (11 1⁄8)

286 (11 1⁄4)

286 (11 1⁄4)

286 (11 1⁄4)

197 (7 3⁄4)

323 (12 7⁄8)

378 (14 7⁄8)

165 (6 1⁄2)

295 (11 5⁄8)

346 (13 5⁄8)

168 (6 3⁄8)

137 (5 3⁄8)

28.6 (1 1⁄8)

80mm(3")

317 (12 1⁄2)

337 (13 1⁄4)

333 (13 1⁄8)

340 (13 3⁄8)

337 (13 1⁄4)

337 (13 1⁄4)

235 (9 1⁄4)

352 (13 7⁄8)

464 (18 1⁄4)

203 (8)

321 (12 5⁄8)

432 (17)

210 (8 1⁄4)

178 (7)

38.1 (1 1⁄2)

100mm(4")

368 (14 1⁄2)

394 (15 1⁄2)

384 (15 1⁄8)

397 (15 5⁄8)

394 (15 1⁄2)

394 (15 1⁄2)

251 (9 7⁄8)

400 (15 3⁄4)

476 (18 3⁄4)

194 (7 5⁄8)

343 (13 1⁄2)

422 (16 5⁄8)

222 (8 3⁄4)

165 (6 1⁄2)

38.1 (1 1⁄2)

150mm(6")

473 (18 5⁄8)

508 (20)

489 (19 1⁄4)

511 (20 1⁄8)

508 (20)

508 (20)

356 (14)

464 (18 1⁄4)

660 (26)

311 (12 1⁄4)

419 (16 1⁄2)

578 (22 3⁄4)

330 (13)

238 (9 3⁄8)

57.2 (2 1⁄4)

200mm(8")

568 (22 3⁄8)

610 (24)

584 (23)

613 (24 1⁄8)

610 (24)

610 (24)

381 (15)

530 (20 7⁄8)

673 (26 1⁄2)

376 (10 7⁄8)

422 (16 5⁄8)

578 (22 3⁄4)

356 (14)

245 (9 5⁄8)

57.2 (2 1⁄4)

250mm(10")

717 (28 1⁄4)

762 (30)

733 (28 7⁄8)

765 (30 1⁄8)

762 (30 1⁄8)

762 (30)

464 (18 1⁄8)

705 (27 3⁄4)

895 (35 1⁄4)

349 (13 3⁄4)

591 (23 1⁄4)

778 (18 5⁄8)

438 (30 5⁄8)

311 (12 1⁄4)

88.9 (3 1⁄2)

300mm(12")

775 (30 1⁄2)

820 (32 1⁄4)

791 (31 1⁄8)

823 (32 3⁄8)

775 (30 1⁄2)

820 (32 1⁄4)

502 (19 3⁄4)

791 (31 1⁄8)

910 (35 7⁄8)

CF

CF

CF

473 (18 5⁄8)

CF

88.9 (3 1⁄2)

400mm(16")

940 (37)

990 (39)

956 (37 5⁄8)

993 (39 1⁄8)

1108 (43 5⁄8)

1108 (43 5⁄8)

689 (27 1⁄8)

1041 (41)

CF

CF

CF

CF

660 (26)

CF

88.9 (3 1⁄2)

500 mm(20")

1410 (55 1⁄2)

1413 (55 5⁄8)

1425 (56 1⁄8)

1425 (56 1⁄8)

CF

CF

902 (35 1⁄2)

1260 (49 5⁄8)

CF

CF

CF

CF

839 (33)

CF

152 (6)

600 mm(24")

1470 (57 7⁄8)

1600 (63)

1486 (58 1⁄4)

1616 (63 5⁄8)

CF

CF

1220 (48)

1441 (56 3⁄4)

CF

CF

CF

CF

965 (38)

CF

152 (6”)

BV800 valve

J

N

F

BV802 valve

L

N

F

VALVE STYLE

BV800 & BV801 Double Seated Valves

BV802 & BV803 Single Seated Valves

BV802 & BV803 Single Seated Valves

BV802 & BV803 Single Seated Valve

TRIM STYLE

Metal Faced

Unbalanced Metal to Metal

Unbalanced Metal to MetalLapped Seats

Unbalanced Resilient Seat

ANSI LEAKAGE CLASS

Class III

Class IV

Class V

Class VI

MAXIMUM ALLOWABLE LEAKAGE

0.1% of Rated Capacity

0.01% Rated Capacity

0.0005ml/min of water per Inch of PortDiameter per PSI differential

Bubble Tight



BC 3-0406

TABLE 8 – Weights (flanged valves - Kg)

BV800&

BV801

BV802&

BV803

CLASS300LB(NP40)

CLASS600LB

(NP100)

Plain

Norm

Bellows

Plain

Norm

Bellows

Plain

Norm

Bellows

Plain

Norm

Bellows

CLASS300LB(NP40)

CLASS300LB

(NP100)


40mm(1 1⁄2")

19

22

29

20

23

30

19

22

29

20

23

30

50mm(2")

28

31

38

31

34

41

29

32

39

31

34

41

80mm(3")

53

57

71

58

62

76

43

47

61

46

49

64

100mm(4")

76

81

105

100

106

129

61

66

90

80

85

109

150mm(6")

155

160

192

190

195

227

135

140

172

180

185

217

200mm(8")

285

290

337

347

352

399

209

215

261

250

256

302

250mm(10")

426

433

470

507

520

560

330

340

430

400

415

485

300mm(12")

686

696

740

750

770

800

NA

NA

NA

NA

NA

NA

400mm(16")

1530

1541

1600

1620

1640

1690

NA

NA

NA

NA

NA

NA

500mm(20")

3048

3089

CF

CF

CF

CF

CF

CF

CF

CF

CF

CF

600mm(24")

CF

CF

CF

CF

CF

CF

CF

CF

CF

CF

CF

CF


Blakeborough THREE WAY VALVES BV830 & BV831

BC 3-0406

Description

The BV830/831 valves are designed for eitherblending two different flows or for dividing a flowinto two proportional amounts. The valves can beused on a wide range of process applications forair, water, steam, oil, gases and chemical services.

The BV830 has two inlets and a common outletbranch. It is used for proportional blending of twoflows into one stream, on such applications ascontrol of process fluid temperature downstreamof heat exchangers, or as mixing valves to controlthe composition of service media. It can also beused for flow splitting duties. The total capacity isconstant irrespective of plug position.

The BV831 series valves are used for proportionalcontrol on flow splitting applications. This valvehas two outlets and a common inlet branch. Theyare used for proportional flow splitting, divertinga portion of the process medium from one part ofa system to another.

A typical application is on the upstream side ofheat exchangers to control the temperature of theprocess fluid.

Design features

• Top and skirt guided

• Wide range of trim sizes

• High capacity

• High stability

• Balanced

Pressure rating


• PN10 to PN250

• ANSI 2500

Sizes

• 40mm to 400mm

11⁄2” to 16”

Travels

• 28.5mm to 89mm

11⁄8” to 31⁄2”

End connections

• Flanged

• Butt weld (on special request)

• Socket weld (on special request)

• Screwed (on special request)

BV830 three way valve for flow mixing applications. The valve can also be usedfor flow splitting if the flow is in reverse

BV831 three way valve for flow splitting applications


BlakeboroughTHREE WAY VALVES BV830 & BV831

BC 3-0406

Trim options

”V” Port Standard Trim

The standard trim design for three way applicationsis the “V” port plug. This design provides high flowcapacity, high rangeability and good leakagecapability (ANSI class IV). Other trim options areavailable as semi-special in the three way valve.

Characteristics Seat Options

• Linear • Metal to metal

• Equal percentage • Soft face

(special applications) • Hard faced

• Linear cascade

(multi-stage)

BV831 valve with cascade trimBV831 valve with soft face trim

BV830 valve with soft face trimBV830 valve standard contour trim BV831 valve standard contour trim

BV830 Normal FlowMixing (Blending)

BV830 Reverse FlowSplitting (Diverting)

BV831 Normal FlowSplitting (Diverting)

BV830/BV831 Valves with soft face trim

The soft face trim option is specified on applicationswhere bubble tight closure is required.

The soft seal is fitted into the plug head and retainedby a shroud. The seat is designed with a lip so thatwhen the plug head contacts the seat high integrityof valve closure is achieved.

Severe Service Trim

Specialist severe service trims can be accommodatedwithin the BV830 body design.

The cascade trim is normally used for applicationswhere the flow requires treatment at source toprevent cavitation and high noise levels on highpressure drop liquid and gas applications.

• Low noise

• Anti cavitation

• Low pressure recovery

FLOW DIRECTION



BC 3-0406

Valve selection guidelines


All valves are sized using the valve flow co-efficient, CV, inaccordance with ISA 75.01 as detailed in the Blakeboroughsizing and selection manual. Design CV values are given intable 4.

Body Selection

The valve body size and style is selected on the basis ofsupporting the selected trim design and design CV. In additionconsideration is made of the velocity and the required pressure

TABLE 1 – Standard material combinations

PTFE gaskets are suitable for temperatures up to 232oC (450oF), above this material specifically considered. Materials listed are standard combination only. Anyother material combination can be accommodated. Trim materials specified can be supplied to conform to NACE Spec. MR-01-75.Material can be supplied to UOP spec. Other material combinations are available.

TABLE 2 – Trim material combinations



drop application. Liquid velocities are limited mainly due toerosion considerations, whereas gas/vapour flow velocities arelimited for trim stability noise and vibration considerations.

Trim Selection

The selection criteria of the valve trim ranges from valve flowco-efficient, rangeability, pressure drop, cavitation, flashingand noise consideration. Blakeborough sizing and selectionmanual details the various calculation methods and selectionlimitations for each trim design.

Body BonnetBottom Flange

Body Gasket

BodyStuds/Nuts

Carbon Steel– Cast orWrought

316 ST.ST.

B7/2H

Chrome MolySteel

316 ST.ST.

B7/2H orB16/7

304 or 304LST.ST.

316 ST.ST.

B8/8

347 ST.ST.

316 ST.ST.

B8/8

316 ST.ST.

316 ST.ST.

B8/8

HastelloyB or C

PTFE

B8/8

Monel

PTFE

B8/8

Alloy 20

PTFE

B8/8

Duplex

PTFE

B8/8

Plug

Seat

Stem

Guide Bush

Packing Parts

316 ST.ST.

316 ST.ST.

316 ST.ST.

440C ST.ST.

316 ST.ST.

316 StelliteFaced

316 StelliteFaced

316 ST.ST.

440C ST.ST.

316 ST.ST.

316 FullStellite

316 FullStellite

316 ST.ST.

Stellite

316 ST.ST.

Hastelloy B/C

Hastelloy B/C

Hastelloy B/C

Stellite

Hastelloy B/C

Monel 400

Monel 400

Monel 400

Monel K500

Monel 400

Alloy 20

Alloy 20

Alloy 20

Stellite

Alloy 20

17-4PH ST.ST.

17-4PH ST.ST.

316 ST.ST.

440C ST.ST.

316 ST.ST.

NACE316 ST.ST.

316 ST.ST.

316 ST.ST.

Stellite

Monel 400

Duplex

Duplex

Duplex

Stellite

Duplex

VALVE SIZE

40 & 50mm(1 1⁄2” & 2”)

80 & 100mm(3” & 4”)

150 & 200mm(6” & 8”)

250 to 300mm(10” to 16”)

LIQUID m/s

12

11

10.5

7.5

LIQUID ft/s

40

36

30

25

STEAM or GAS m/s

105

100

90

70

STEAM or GAS ft/s

350

315

275

225

MAX OUTLET(STEAM or GAS)

0.65 x SONIC


BlakeboroughTHREE WAY VALVES BV830 & BV831

BC 3-0406

TABLE 4 – Flow coefficients CV (US units)

TRIM TYPE BODY SIZE FULRATE FULRATE

BV830 BV831

LINEAR

40mm (1 1⁄2”)

50mm (2”)

80mm (3”)

100mm (4”)

150mm (6”)

200mm (8”)

250mm (10”)

300mm (12”)

400mm (16”)

27

40

90

145

300

550

775

1200

2200

27

40

90

130

340

500

725

1100

2100

TABLE 5 – Normal control valves leak rates

TRIM STYLE

ANSILEAKAGE

CLASS MAXIMUM ALLOWABLE LEAKAGE

Unbalanced Metal

to Metal

Unbalanced Metal to

Metal Lapped Seats

Unbalanced

Soft Face

Class IV

Class V

Class VI

0.01% Rated Capacity

0.0005 ml of water per inch of port

diameter per PSI differential

Bubble Tight


F

G

H

F

G

H

F

G

H

F

G

H

J

J

L

L

L

40mm(1 1⁄2”)

235 (9 1⁄4)

157 (6 3⁄16)

187 (7 3⁄8)

251(9 7⁄8)

164 (6 7⁄16)

195 (7 11⁄16)

248 (9 3⁄4)

160 (6 5⁄16)

190 (7 1⁄2)

251 (9 7⁄8)

167 (6 9⁄16)

196

(7 3⁄4)

159 (6 1⁄4)

283 (11 1⁄8)

191 (7 1⁄2)

311 (12 1⁄4)

365 (14 3⁄8)

28.6 (1 1⁄8)

50mm(2”)

267 (10 1⁄2)

168 (6 5⁄8)

200 (7 7⁄8)

286 (11 1⁄4)

178 (7)

210 (8 1⁄4)

283 (11 1⁄8)

172 (6 3⁄4)

204 (8)

289

181 (7 1⁄8)

211

(8 5⁄16)

165 (6 1⁄2)

295 (11 5⁄8)

197 (7 3⁄4)

323 (12 7⁄8)

378 (14 7⁄8)

28.6 (1 1⁄8)

80mm(3”)

317 (12 1⁄2)

200 (7 7⁄8)

232 (9 1⁄8)

337 (13 1⁄4)

229 (9)

260 (10 1⁄4)

333 (13 1⁄8)

204 (8)

236 (9 1⁄4)

340

332 (9 1⁄8)

261

(10 5⁄16)

203 (8)

321 (12 5⁄8)

235 (9 1⁄4)

352 (13 7⁄8)

464 (18 1⁄4)

38.1 (1 1⁄2)

100mm(4”)

368 (14 1⁄2)

216 (8 1⁄2)

273 (10 3⁄4)

394 (15 1⁄2)

267 (10 1⁄2)

324 (12 3⁄4)

384 (15 1⁄8)

220 (8 5⁄8)

277 (10 7⁄8)

397

270 (9 1⁄4)

325

(12 3⁄16)

194 (7 5⁄8)

343 (13 1⁄2)

251 (9 7⁄8)

400 (15 3⁄4)

476 (18 3⁄4)

38.1 (1 1⁄2)

150mm(6”)

473 (18 5⁄8)

273 (10 3⁄4)

319 (12 9⁄16)

508 (20)

319 (12 9⁄16)

367 (14 7⁄16)

489 (19 11⁄4)

277 (11)

323 (12 11⁄16)

511

322 (12 11⁄16)

368

(14 1⁄2)

311 (12 1⁄4)

419 (16 1⁄2)

356 (14)

464 (18 1⁄4)

660 (26)

57.2 (2 1⁄4)

200mm(8”)

568 (22 3⁄8)

306 (12 1⁄16)

379 (14 15⁄16)

610 (24)

368 (14 1⁄2)

435 (17 1⁄8)

584 (23)

310 (12 1⁄8)

383 (15 1⁄16)

613

371 (14 5⁄8)

436

(17 3⁄16)

376 (10 7⁄8)

422 (16 5⁄8)

381 (15)

530 (20 7⁄8)

673 (26 1⁄2)

57.2 (2 1⁄4)

250mm(10”)

718 (28 1⁄4)

413 (16 1⁄4)

540 (21 1⁄4)

762 (30)

440 (17 5⁄16)

562 (22 1⁄8)

733 (28 7⁄8)

417 (16 3⁄8)

565 (22 1⁄4)

765

443 (17 7⁄16)

563

(22 3⁄16)

349 (13 3⁄4)

591 (23 1⁄4)

464 (18 1⁄8)

705 (27 3⁄4)

895 (35 1⁄4)

88.9 (3 1⁄2)

300mm(12”)

775 (38 1⁄2)

433 (17)

562 (22 1⁄8)

820 (32 1⁄4)

455 (17 15⁄16)

584 (23)

791 (31 1⁄8)

437 (17 1⁄4)

565 (22 1⁄4)

823

458 (18)

585

(23 1⁄16)

CF

CF

502 (19 3⁄4)

791 (31 1⁄8)

910 (35 7⁄8)

88.9 (3 1⁄2)

400mm(16”)

940 (37)

508 (20)

635 (25)

990 (39)

533 (21)

660 (26)

956 (37 5⁄8)

515 (20 1⁄4)

638 (25 1⁄8)

993 (39 1⁄8)

536 (21 1⁄8)

661

(26 1⁄16)

CF

CF

689 (27 1⁄8)

1041 (41)

CF

88.9 (3 1⁄2)

Up to ANSI 300lb and PN40

ANSI 600lb and PN100

Up to ANSI 300lb Ring Joint

ANSI 600lb Ring Joint

Plain (J)

Normalising (J)

Plain (L)

Normalising (L)

Bellows (L)

Valve Travel

BV830 valve

J

G

F

BV831 valve

L

H

F




BC 3-0406


TABLE 7 – Weights (flanged valves - Kg)

BV830

40mm(1 1⁄2")

20

22

22

24

23

26

35

24

28

36

50mm(2")

35

38

38

44

34

38

46

37

41

49

80mm(3")

50

54

55

59

64

68

85

70

75

91

100mm(4")

68

73

95

115

91

98

126

120

127

155

150mm(6")

150

155

210

255

186

192

230

228

234

272

200mm(8")

253

259

320

365

342

348

405

416

422

479

250mm(10")

401

411

510

580

515

520

516

480

498

582

300mm(12")

CF

CF

CF

CF

823

835

888

836

850

960

400mm(16")

CF

CF

CF

CF

CF

CF

CF

CF

CF

CF

CLASS300LB(NP40)

CLASS600LB

(NP100)

BV831

CLASS300LB(NP40)

CLASS600LB

(NP100)

Plain

Norm

Plain

Norm

Plain

Norm

Bellows

Plain

Norm

Bellows


BlakeboroughDESUPERHEATING EQUIPMENT & SYSTEMS

BC 3-0406

Pipeline desuperheaters

BV985 - Variable Probe Spray Nozzle

• Large range of design Cv options

• High rangeability

• Swirl chambers and conical nozzles for optimumatomisation

• Pipe sizes 150mm (6”) and above

• Interchangeable nozzles

BV986 - Fixed Area Spray Ring

• Pipe sizes 25mm (1”) and above

• CV designed for each application

• Simple and inexpensive system

BV987 - Desuperheater Pipe

• Desuperheater pipe and optional liner

BV988 - Fixed Area Probe

• Multi nozzle for optimum dispersion in steam flow

Combined temperature & pressure reducingequipment

BV994 - Globe Design

BV995 - Angle Design These units offer an excellent combination ofpressure and temperature control in one cost-effective unit.

Pressure Ratings

• ANSI Class 150 to ANSI 4500

• PN10 to PN640

Sizes

• Inlet - 40mm (11⁄2”) to 500mm (20”)

• Outlet - 40mm (11⁄2”) to 1000mm (40”)

Design Features

• Large range of trim design options - standard tolow noise

• Outlet section for improved mixing and noisecontrol

• Spray water injection away from control/seat facesto eliminate problems of thermal shock anderosion

• Optional pilot balanced design for tight shut off

• Proven design


Blakeborough DESUPERHEATING EQUIPMENT & SYSTEMS

BC 3-0406

MN1 MN2 MN3 MN4 MN5 MN6

0.5 0.9 1.5 2.7 4.7 8.0

TABLE 1 – Nozzle design CV

TABLE 2 – Branch height & actuator mount

dimensions

Water Flange OrientationThe pipework inlet flange can be arranged tosuit customer’s pipework configurations.

BV985 - Variable spray unit

General

The BV985 multi nozzle desuperheater is a provendesign used in thousands of installationsthroughout the world. The latest version offersincreased CV ratings and improved rangeabilitywith the option of modified characteristics.

Design Details

• The standard model incorporates 12 carefullyspaced spray nozzles for optimum dispersion inthe steam flow, and to minimise coalescence ofthe droplets.

• Nozzles arranged so that at low steam flowswater is injected into high turbulence zone of thevortices shed from the desuperheater probe.

• Nozzle design incorporates swirl chambers andconical nozzle for optimum atomisation even atlow superior pressures.

• Nozzle assemblies can be characterised to suitprocess requirements and nozzle selection can bechanged after installation.

Standard Design Options

• Water inlet connection size 25mm, 40mm and50mm (1”, 11⁄2” and 2”)

• Connection - flanged, socket weld

• Ratings - ANSI 150 to ANSI 2500

• Nozzle sizes (see table 1)

• Superior Pressure 1 bar to 50 bar (15psi to 740psi)

• Nozzle Rangeability - up to 40:1

OptionalHandwheel

Diaphragmactuator

Positioner

Water inlet flange

Desuperheater Pipe(optional extra)

N

MK

L

Pipe to fall towards drain port.Inclination approx 20 mm per munder working conditions.

1 metre

Steamflow

Airsupply

Filterregulator

Refer to Actuator catalogues for dimensions.

Standard Travel 57mm(2 1⁄4”)Yoke Mtg 89.5mm (3 9⁄16”)

Typical arrangmentusing BV985 Mark II

Shown with manuallyoperated isolatingvalve

Mainsteamsupply

Hopkinsonsparallel slidevalve

Filterregulator

Positioner

BV500control valvepressurereducing

Filterregulator

Positioner

From temperature loop

Water supply

BV985 Mark II Variable orifice multi-nozzleReduced/Desuperheatedsteam

From pressure loopBV987Desuperheater pipe

SPRAYUNIT

B

A

D

C

Steamflow

BV987 Branch Height Act. MountPipe Size mm L K

150 177 382200 200 405250 226 431300 251 456350 277 482400 302 507450 327 532500 350 555600 372 577650 416 621700 454 659750 480 685800 501 706850 517 722900 547 752

Rating M N

≤ 600lb 135 133900lb & 1500lb 184 167

2500lb 210 200



BC 3-0406

BV986 - Fixed area spray ring

General

This unit offers a relatively simple and inexpensivesolution for applications which have low rangeabilityand stable steam demand. The system consists of aspray ring together with a separate spray watercontrol valve. The spray water control valveregulates the flow into an annular feed within thespray ring body. This annular feed passes water intoa number of holes to produce a series of radial jetsinto the steam flow, which assist in the mixingprocess.


• Body size - 25mm to 200mm (1” to 8”)

• Ratings - ANSI 150 to ANSI 2500

• Nozzle size designed for specific application

• Superior Pressure 1 bar to 50 bar (15psi to 740psi)

• Rangeability - up to 8:1 on steam flow

BV987 - Pipeline desuperheater pipe

The BV987 desuperheater pipe offers a convenientmethod to install either the BV985 or the BV988.It is available in sizes from 150mm to 900mm (6”to 36”).

An 80mm (3”) branch flange is provided formounting the desuperheater. The desuperheaterpipe can be supplied in carbon steel or chromemoly. Desuperheater pipes can be supplied withprotective liners when the service conditionsindicate the possibility of thermal shock or toincrease the steam velocity.

BV988 - Fixed area probe

General

This multi-nozzle desuperheater can be fitted intoline sizes >= 6”. The nozzle head is the same asused in the BV985 incorporating up to 12 nozzles.The spray water is regulated by a separate spraywater control valve.


• Refer to BV985 section

• Rangeability - up to 8:1 on steam flow

FACE TO FACE DIMENSIONS

Bore (mm) 25 40 50 80 100 150 200

Dimn (mm) 80 80 80 150 150 150 150

DESIGN CV

MD1 MD2 MD3 MD4 MD5 MD6 MD7 MD8 MD9 MD10

0.03 0.04 0.06 0.1 0.14 0.2 0.4 0.63 1.0 1.4

TABLE 3 – Pipeline desuperheater standard materials

Spraywater

Superheatedsteam

Pipe to fall towards drain port.Inclination approx 20 mm per m

under working conditions.

1 metre

Desuperheatedsteam

BV987 Desuperheater Pipe(optional extra)

BV988 Mark IIFixed orifice type

Component BV985/BV988 BV986

Body <=427 ˚C Carbon Steel Carbon Steel

Body >427 ˚C Chrome Moly Chrome Moly

Spray unit head 316 L st.st.

Seat 316 L st.st.

Plug/Stem 316 L st.st. + stellite face

Nozzles 316 L st.st.

Swirl Inserts 316 L st.st.



BC 3-0406


Pressure Ratings

• ANSI Class 150 to ANSI Class 4500

• PN10 to PN640

Sizes

• Inlet - 40mm to 500mm (1 1⁄2” to 20”)

• Outlet - 40mm to 1000mm (1 1⁄2” to 40”)

Trim Options

• Multi-flow, Cascade 2/3/4/5

Combined steam reducing & desuperheatingunit

BV994 & BV995 units

ApplicationThe BV994 and BV995 range of valves have beendesigned specifically for the control of processsteam to meet the various pressures andtemperatures required throughout the plant. Itcan also be specified to work in parallel with aturbine to supplement the supply of steam toprocess, also on turbine by-pass duties where thevalve dumps the flow directly to the condenser orto cold reheat.

DesignThe unit consists of a steam pressure reducingvalve, either of angle or globe body configuration,with a specially designed outlet incorporating aspray water injection system and a combinedmixer/silencer.

Conditions usually associated with this service arehigh pressure drop in the critical flow regimeleading to sonic conditions across standard trimdesigns. The BV994 and BV995 units can be fittedwith either multiflow or cascade trims. These trimsare able to handle the severe service conditions ofthis application without the by products ofvibration, erosion and high noise levels.

The type of plug generally used in this valve seriesis a balanced design to reduce the actuator loadrequirements. This design equalises the pressureabove and below the plug in the open positionthereby significantly reducing actuator loads. Afurther advancement on this design is the pilotbalanced plug, which enables ANSI Class V shut-off to be achieved without the need of high thrustactuators. This design incorporates two plugs (onewithin the other), which creates a high integritysealing system.

The spray system consists of either a spray ringand separate spray water control valve, or a probetype variable spray unit, BV985, depending onsteam turn down requirements. The spray water isnormally injected before a series of baffle plates,which act to improve desuperheating efficiency.The baffle plates are carefully calculated toproduce further stages of pressure drop andimproved mixing of the steam and spray water.

The main steam valve and the spray water valvesare commonly fitted with pneumatic diaphragm orpiston actuators, fitted with positioners foraccurate response.

Valves with low noise trim and outlet silencers destined for a desalination plant in the MiddleEast.



BC 3-0406

Turbine bypass systems

Blakeborough have over 40 years ofexperience in design and manufacturingvalves and desuperheaters. Equipment hasbeen supplied throughout the world rangingfrom small process applications through tolarge power generating installations.

Typical Scope of Supply

• High pressure by-pass control valve

• High pressure desuperheater

• High pressure spray water control valve

• IP by-pass control valve

• IP desuperheater

• IP spray water control valve

• Low pressure isolation valve

• LP by-pass control valve

• LP desuperheater

• LP spray water control valve

Schematic of Turbine Bypass System

�

� �

�

� �

�

��

�

��

� �

�

��

�

�

�

�

�

�

�

�

�

� ��

��

��

�

SUPERHEATSPRAY

ATTEMPERATOR

ATTEMPERATOR

N.R.V.

H.P. STEAMBY-PASS

DESUPER-HEATER

REHEATSPRAY

H.P. TURBINE

I.P. & L.P.TURBINE GENERATOR

CONDENSER

DUMP TUBE

FEEDPUMPS

P

H.P. HEATERS

FLUEGASES TO STACKFUEL

DISTRIBUTIONDAMPERS

DEAERATOR

L.P.SPRAYVALVE

P

L.P.HEATERS

MAIN FEED & START-UPREGULATING VALVES

ELECTRICALOUTPUT

L.P. STEAMISOLATING

VALVE

L.P. STEAMBY-PASS

DRUM

COMBUSTIONCHAMBER

SEC.SUPER-HEATER

ECONMS ECONMS

•• •• • •

PRIM. SUPER-HEATER

REHEAT

Design Features

• Angle or globe designs.

• Tight shut-off with pilot operation to maximiseefficiency.

• Cage guided plugs to eliminate vibration potential.

• Multi-stage low noise trims.

• Erosion resistant trim materials selected which alsoprevent galling and the effects of thermal cycling.

• Pneumatic or electro-hydraulic actuation.

• Variable spray designs.

• Ancillary instrumentation to give fast response,whilst maintaining stable operation.

HP turbine bypassdesuperheater for combinedcycle power plant LP turbine bypass

desuperheater for combinedcycle power plant

Final required degrees of superheat, degrees F.

Final required degrees of superheat, degrees C.

100 80 60 40 20 110 90 70 50 30 10

5

6 8 10 12 14 16 18 20metres

kJ/kg

550

500

450

400

350

300

250

200

150

100

50 Min

imu

m d

ista

nce

7.5

m

EnthalpyChangeGraphs

180 140 100 60 20200 160 120 80 40

10

20 25 30 35 40 45 50 55 60 65 feet

Btu/lb

250

225

200

175

150

125

100

75

50

25

0

Min

imu

m d

ista

nce

25

fee

t

d

300(d = pipe dia. mm)

Graphs based upon 300mm pipe size. For other sizesmultiply distance by



BC 3-0406

Should the recommended location for the temperaturesensing point coincide with a pipe bend, then the sensingpoint should be moved a further two metres downstream.Examples on use of the above graphsSteam pressure 10 bara. Saturation temperature 180°C.Required outlet temperature 200°CSteam Inlet enthalpy 3253kJ/kg Enthalpy changeSteam Outlet enthalpy 2829kJ/kg 424 kJ/kgFinal required degrees of superheat = 200-180 = 20°CDraw line from enthalpy change to intercept degrees ofsuperheat line, read off minimum distance = 15.2 metres.Spraywater TemperatureEffective desuperheater operation depends upon the correctamount of spraywater introduced into the steam flow. Ifthe steam or water temperature conditions dictate a wateraddition of greater than 20% of the steam mass flowunder normal conditions then a two stage nozzle systemmay be necessary. To limit the amount of water enteringthe steam to an acceptable level a maximum watertemperature can be calculated using the followingformulae.Tmax = (P + 0.5DS - 1.427Δh + 630) °C MetricTmax = (0.125P + 0.5DS - 6.1Δh + 1190) °F Imperialwhere P = absolute steam pressure bara (psia)DS = final required degree of superheat °C (°F)Δh = enthalpy change from inlet to outlet kJ/kg (Btu/lb)Ideally the water temperature should be within thefollowing range for satisfactory operation:-(TSAT - 100) °C < TWATER < (TSAT - 5) °C Metric(TSAT - 210) °F < TWATER < (TSAT - 10) °F Imperialalso applying the maximum water temperature limitationswhen applicable (TSAT is the stream saturation temperature).

Initial calculationsCalculate the required flow of water WW, kg/hr (lb/hr),needed to control the steam temperature at the outlet,by the heat balance method.WW = WS (h1 - h2)

(h2 - hF)where h1 = enthalpy of superheated steam at inletwhere h2 = enthalpy of steam mixture at outletwhere hF = enthalpy of spraywater at inletvalues in kJ/kg (Btu/lb)Total outlet steam flowrate WM = WS + 2W kg/hr (lb/hr)Sizing of low pressure pipelineThis is the recommended pipe size for BV985, BV986 andBV988 pipeline types, or the outlet size for the BV995design for efficient desuperheating.

The pipe is sized so that the steam velocity does not exceed90m/s (300ft/s) or, for BV985, BV986, BV988 types, fall below4.5m/s (14ft/s). The preferred velocity is 75m/s (250ft/s).

The minimum pipe diameter is calculated using thefollowing formulae.

• For BV985, BV986 and BV988 desuperheaters there is aselection of standard trim sizes available

• BV995 units are often associated with outlet silencersections depending upon the ratio of inlet and outletpressures and the maximum permissible sound pressure.For these reasons each unit receives individualconsiderations based upon customer requirements.

Distance to temperature sensing pointDepending upon the amount of superheat required in thesteam after desuperheating, the minimum recommendeddistance to the temperature sensing point can bedetermined from the graphs shown. To ensure completemixing and absorption of the injected water therecommended distance increases as the steam saturationtemperature is approached.

Information required at enquiry stage

D = 18.8 mm or D = 0.225 in.

where WM = outlet steam flowrate kg/hr (lb/hr)

where VS = outlet specific volume m3/kg (ft3/lb)

Velocity m/sec (ft/sec)

WM x VS

Velocity

WM x VS

Velocity

}

Initial sizing of desuperheaters

P1 Inlet Pressure Bara (Psia)T1 Inlet temperature °C (°F)P2 Required outlet pressure Bara (Psia)T2 Required outlet temperature °C (°F)PW Available spraywater pressure Bara (Psia)TW Spraywater temperature °C (°F)WS Maximum inlet steam flow kg/hr (lb/hr)Controlled temp. should be higher than 5 ˚C (9 ˚F) above saturation point.



BC 3-0406

The pipes connecting the water supply to theinjection nozzle should be no less in diameter thanthe water isolating valve flange connectionsindicate.

Condensate supply should be free from debris andeffectively filtered to less than 0.25mm.

Lagging of pipes

The fact that a desuperheater is a device forreducing the steam temperature sometimes leadsto the mistaken impression that the lagging ofsteam and water pipes is not important. Unlike theabsorption of heat by the spray water, any loss ofheat should be avoided. Unless the pipework canbe maintained at the proper temperaturesuccessful desuperheating may not be possibleand a preliminary trial of a plant before it hasbeen lagged may prove disappointing.

Design & installation of pipelinedesuperheater systems

Location in pipework

The desuperheater should be installed so that thespray nozzle is located at the steam inlet of the tube(if supplied). A filter should be fitted in the spraywater inlet line to prevent ingress of dirt.

Pipe Joints

Owing to the severe expansion strains which maybe imposed on the joints when starting up it isessential that all flange joint bolts aremanufactured from high tensile alloy steelirrespective of the steam pressure. These remarksalso apply to the water joint flanges which arealso subject to sudden temperature changes.

Drainage and drainage systems

Efficient drainage of the pipework following thedesuperheater is essential. To ensure that watercannot accumulate at any point the pipe shouldbe arranged to fall in the direction of flowapproximately 20mm per metre (1⁄4” per foot)under actual working conditions and be providedwith an efficient large capacity trap (10% ofmaximum flow to facilitate start-up and shut downof plant) at the lowest point. To prevent the trapbecoming airbound the drain pipe should haveample capacity to deal with the drainage and befixed as near to vertical as possible. There must besufficient space in the drain pipe for water to flowdown and air to pass up the pipe.

When starting up the plant it is advisable to openthe trap by-pass valve to deal with any excesswater. If a by-pass valve is not fitted the trapshould be inspected to ensure that it is passingwater and has not become airbound. When thepipework has warmed through to workingtemperature and a reasonable amount of steam isflowing the drainage of water should practicallycease and the trap by-pass valve can then beclosed.

Successful operation of a desuperheater dependsto a large extent on the injection of water beinghot, preferably near to the saturation temperatureof the steam to be cooled so that it is mainly thelatent heat which is extracted from the steam toevaporate the injected water. This minimises thetime of the suspension of the water particles in thesteam so that all the water is evaporated and nonefalls to the inside walls of the pipework. Asmentioned below the pipes connecting the watersupply to the injection nozzle should be efficientlylagged to minimise the loss of heat.

The water pressure and temperature should be noless than the values originally specified at theenquiry/order stage since these figures are usedfor design purposes in sizing the injection nozzle.



BC 3-0406

Design & installation of pipeline desuperheater systems

SELECTION CHART

PRESSURE REDUCINGAND DESUPERHEATING

DESUPERHEATINGONLY

1YES2

YES3

YES4

YES NO

NO

NO

5

NO

NO

NO

NO

NOYES

YES8

YES

YES6

7

1 Is inlet pressure rating less than PN250?

2 Is inlet pressure rating greater than PN100 and outlet pressure rating less than PN100?

3 Is outlet pipe size greater than 100mm?

4 Is steam flow variable?

5 Is outlet pipe size greater than 100mm?


7 Is pipe size greater than 100mm?


RECOMMENDED SYSTEM

BV985 MARK II

BV988 MARK II

BV986

BV994/5

USED IN CONJUNCTION WITHCONTROL VALVE OF SERIES STATED

BV990

BV990

BV990

BV500

BV500

BV500

NOTE:- This chart is for guidance only.Other factors, such as customerconditions or special requirementsmay result in a different systemthan recommended by this chart.


BlakeboroughDIAPHRAGM, MANUAL & LEVER ACTUATORS

BC 3-0406

A40A DiaphragmActuator (200 in2)

A41A Diaphragm Reverse Acting Actuator (100 in2)

Description

The Blakeborough range of diaphragm actuatorsis designed to suit the majority of controlapplications and offer an economical solution tovalve control.

The diaphragm actuator is available in two basicforms, the direct acting type (A40 series) and thereverse acting type (A41 series). Both ranges aresuitable for modulating applications when used inconjunction with a suitable control device.Alternatively they can be used for On/Offapplications.

A number of optional features can also be specifiedsuch as manual handwheels or travel limit stops.The simplicity of design of the actuator enablesroutine maintenance in the field without the needfor removal of the actuator to the workshop.

All actuators in the Blakeborough range areproduced in the same range of travels and bonnetmount diameters and are interchangeable size-for-size on any Blakeborough valve body.

Design Features

• Economical design

• Side and top mounted handwheels

• Range adjustable limit stops

• High stability

• Low hysteresis

Pressure/temperature rating

• Pressures 3.2-5.2 Bar (45-75 PSI)

• Temp -40°C - 80°C (-40°F - 140°F)

Sizes

• 50 in2 (320 cm2)

• 100 in2 (640 cm2)

• 200 in2 (1290 cm2)

• 300 in2 (1935 cm2)

Travels

• 19mm to 178mm

3⁄4" to 7"


Blakeborough DIAPHRAGM, MANUAL & LEVER ACTUATORS

BC 3-1205

200 in2 Direct ActingDiaphragm Actuator

200 in2 Reverse ActingDiaphragm Actuator

A40 & A41 series piston actuator - generaldescription

The Blakeborough, spring return diaphragmactuators come in two basic forms, the type A40which is direct acting and the A41 which is reverseacting. Both are designed with a cast iron yoke(carbon steel on request) and a high integritycarbon steel diaphragm case.

The A40 actuator is designed with an air tightupper chamber and when air is applied thepressure pushes the actuator stem downwards.When air is released the spring force lifts theactuator stem upwards.

The A41 actuator has a pressure tight lowerchamber and when air is applied pressure lifts theactuator stem. When air is released the actuatorspring pushes the stem downwards.

Features

Manual Controls

• Side Mounted Handwheel (geared)

• Side Mounted Handwheel (clipon)

• Top mounted handwheel

• Top mounted limit stop

Travels

• 19mm (3⁄4") to 178mm (7")

Mounting

• The actuator yoke allows easy access to the glandand stem coupling. The base is secured to thebonnet by a clamp ring (on larger yokemountings bolts are used) and the complete unitmay be removed without disturbing the gland ofthe valve.

Stem Coupling

• Actuator and valve stems are connected by a steelsplit coupling, the halves bolted together toensure a tight union.

Position Indicator

• A travel indicator having pointer and graduatedplate shows the position of the valve plugs at alltimes.

Materials of Construction

• Yoke - Nodular cast iron (carbon steel on request)

• Case - High integrity carbon steel

• Spring - High tensile spring steel

• Diaphragm - Buna ‘N’ nitrile rubber (othermaterials on request)



BC 3-0406

‘B’ Type Handwheel

‘S’ Type Side Handwheel

Top HandjackA40J A40E

Limit Stop Handwheel

Top HandjackA41K A41F

Limit Stop Handwheel

Features and options

Side Mounted Handwheel

Handwheels are designed to give an override facilityto the operator to bypass the control signal that iscontrolling the valve therefore allowing manualintervention in the control system. This cansometimes be useful in such things as plant start-upto preposition the valve to a given flow.

There are two forms of side mounted handwheelunit available in the Blakeborough range. The “S”type is of bell crank design which may be added toa basic diaphragm actuator without any need fordesign modifications (although re-positioning ofinstruments may be required). The “S” type unitcan only be used for valve travels of up to 11⁄2"(38mm).

For valve travels above 11⁄2" (38mm) the “B” typeside mounted unit should be used. As this is ageared unit, it is purpose designed and should beselected at the order stage. The unit is built as anintegral part of the actuator yoke on A40B & A41Bactuators.

Side mounted handwheels can also be used to limittravel in either direction (though not at the sametime). The handwheel may be set in the neutralposition for automatic operation through the fullvalve travel. In any other position valve travel isrestricted.

Top Mounted Handjacks

Top mounted handjacks are supplied as analternative to the side mounted handwheel wherefor example space may be limited or access is onlyavailable from the top. They are designed principallyas a travel limit stop, however the top mountedhandwheel can be used to give manual control ofthe valve. The handjack comes in two basic designs,when fitted with a handwheel it can be used formanual intervention. When fitted with a cover itbecomes a limit stop which may be set by the valveoperator to limit either the opening or closing ofthe valve.



BC 3-0406

P1

H4H5

J1

Diaphragm, manual

The actuator is useful in applications whereconditions do not justify instrument operation, butwhere precise control of the process is required.Valves equipped in this way can be converted at anytime to pneumatic operation, since the actuators areinterchangeable, size-for-size. The handwheel iskeyed to a revolving nut which engages a screwednon-revolving stem connected to the plug by meansof a normal split coupling. Anti-friction thrustbearings ensure ease of operation. A locking facilitywhich, can additionally incorporate a lower travelstop, is available. Clockwise rotation of thehandwheel moves the stem downwards. For thrustsgreater than 200lb F geared units would bespecified.

Lever actuators

Generally used for operation of the valve by existinghydraulic or pneumatic cylinder. The levermechanism is carried on a standard cast yoke andoperates a sliding stem, riding in permanentlylubricated bearings. The unit can be adjustable fortravel and is connected to the valve stem by thenormal split coupling. The length of the lever andprovision for piston rod connection is manufacturedto suit customers requirements.

A48/A49 yokeless diaphragm actuator

The A49 style actuator is basically the same design as thestandard A40/A41 diaphragm actuators, but manufacturedwithout yoke. The design has been primarily developed forfitting to butterfly valves.

Size Bonnet Max P1 H4 WtCode Mount Travel (Kg)

MB 2 1⁄8 1 1⁄8 10 12 754 28.6 254 305

MD 2 13⁄16 1 1⁄2 10 13 1⁄4 871.4 38 254 337

MF6 3 9⁄16 1 1⁄2 15 16 1⁄2 1490.5 38 381 419

MF7 3 9⁄16 2 1⁄4 15 16 1⁄2 1490.5 57.2 381 419

MF8 3 9⁄16 3 1⁄2 21 20 3⁄4 2890.5 89 533 527

Size Bonnet Max J1 H5 WtCode Mount Travel (Kg)

WB 2 1⁄8 1 1⁄8 1 1⁄2 1254 28.6 38 305 10

WD 2 13⁄16 1 1⁄2 2 1⁄16 1371.4 38 52.4 330 23

WF6 3 9⁄16 1 1⁄2 2 5⁄8 1690.5 38 66.7 406 30

WF7 3 9⁄16 2 1⁄2 2 5⁄8 16 3⁄4

90.5 57.2 66.7 425 30WF8 3 9⁄16 3 1⁄2 4 25 1⁄2

90.5 89 102 648 34WJ7 5 2 1⁄2 3 1⁄2 26 3⁄8

127 57.2 89 670 37WJ8 5 3 1⁄2 6 1⁄2 28

127 89 165 708 44



BC 3-1205

A40A A41A A40B A41B A40S A41S A40A A41A (50in2 & 100in2) (50in2 & 100in2)

A40 & A41 series actuator dimensions

Size Area Act’r Travel Basic Weight D H H1 H2 H3 J J1 K L PCode Mount Unit with

Sq in Dia Weight H/WSq cm (kg) (kg)

DB4 50 2 1⁄8 1 20 33 11 5⁄8 18 3⁄16 21 3⁄16 - - 26 9⁄16 28 1⁄8 9 1⁄8 12 1⁄8 9 7⁄8

320 54 25.4 295 462 538 675 714 230 308 250

DB5 50 2 1⁄8 1 1⁄8 20 33 11 5⁄8 18 3⁄16 21 3⁄16 - - 26 9⁄16 28 1⁄8 9 1⁄8 12 1⁄8 9 7⁄8

320 54 28.6 295 462 538 675 714 230 308 250

GB4 100 2 1⁄8 1 36 49 16 3⁄4 21 9⁄19 25 3⁄4 - - 30 31 9 1⁄16 12 1⁄8 9 7⁄8

640 54 25.4 426 548 653 763 787 230 308 250

GB5 100 2 1⁄8 1 1⁄8 36 49 16 3⁄4 21 9⁄19 25 3⁄4 - - 30 31 9 1⁄16 12 1⁄8 9 7⁄8

640 54 28.6 426 548 653 763 787 230 308 250

GD5 100 2 13⁄16 1 1⁄8 39 52 16 3⁄4 22 7⁄8 27 - - 31 5⁄16 32 5⁄8 10 1⁄4 12 1⁄8 9 7⁄8

640 71.4 28.6 426 580 686 795 829 261 308 250

GD6 100 2 13⁄16 1 1⁄2 39 52 16 3⁄4 22 7⁄8 27 - - 31 5⁄16 32 5⁄8 10 1⁄4 12 1⁄8 9 7⁄8

640 71.4 38 426 580 686 795 829 261 308 250

KD6 200 2 13⁄16 1 1⁄2 59 75 21 27 3⁄8 29 1⁄2 33 3⁄4 37 3⁄4 38 7⁄16 41 1⁄8 - - 15

1290 71.4 38 533 695 749 857 958 977 1044 381

GF7 100 3 9⁄16 2 1⁄4 44 N/A 16 3⁄4 30 34 - - 40 1⁄16 42 - - -

640 90.5 57.2 426 762 863 1017 1067

KF6 200 3 9⁄16 1 1⁄2 59 75 21 28 7⁄8 31 34 37 15⁄16 40 3⁄16 43 - - 15

1290 90.5 38 533 733 787 863 963 1021 1092 381

KF7 200 3 9⁄16 2 1⁄4 60 80 21 33 5⁄8 36 11⁄16 39 43 13⁄16 45 1⁄4 49 - - 15

1290 90.5 57.2 533 854 931 991 1113 1149 1245 381

KF8 200 3 9⁄16 3 1⁄2 88 122 21 39 7⁄16 43 1⁄4 47 7⁄16 54 5⁄16 51 13⁄16 55 3⁄4 - -

1290 90.5 89 533 1002 1098 1205 1380 1316 1416 381

KJ7 200 5 2 1⁄4 99 140 21 38 5⁄8 41 5⁄8 43 5⁄16 48 1⁄8 50 1⁄4 54 - - 15

1290 125 57.2 533 981 1058 1100 1223 1276 1372 381

KJ8 200 5 3 1⁄2 105 146 21 42 13⁄16 47 7⁄16 50 3⁄4 57 11⁄16 55 3⁄16 59 15⁄16 - - 15

1290 125 89 533 1088 1204 1290 1465 1402 1522 381

LF7 300 3 9⁄16 2 1⁄4 70 120 28 45 7⁄16 45 7⁄16 64 1⁄4 64 1⁄4 N/A N/A - - 18

1395 90.5 57 710 1154 1154 1556 1556 460

LF8 300 3 9⁄16 3 1⁄2 99 140 28 51 1⁄4 51 1⁄4 67 1⁄8 67 1⁄8 N/A N/A - - 18

1395 90.5 89 710 1302 1302 1705 1705 460

LJ7 300 5 2 1⁄4 90 140 28 50 7⁄16 50 7⁄16 66 1⁄4 64 1⁄4 N/A N/A - - 18

1395 125 57 710 1281 1281 1683 1683 460

LJ8 300 5 3 1⁄2 119 160 28 54 5⁄8 54 5⁄8 70 1⁄2 70 1⁄2 N/A N/A - - 18

1395 125 89 710 1388 1388 1791 1791 460

LJ9 300 5 5 150 210 28 60 1⁄2 60 1⁄2 83 1⁄8 83 1⁄8 N/A N/A - - 18

1395 125 127 710 1537 1537 2111 2111 460

LJE 300 5 6 181 380 28 64 1⁄2 64 1⁄2 93 1⁄8 93 1⁄8 N/A N/A - - 18

1395 125 152 710 1638 1638 2365 2365 460

LJF 300 5 7 181 380 28 64 1⁄2 64 1⁄2 93 1⁄8 93 1⁄8 N/A N/A - - 18

1395 125 178 710 1638 1638 2365 2356 460

D

D D

D

D

D D

H

H H

H1 H2

H3

H1

J1

P PP P

L LK K

JJ

D

H1

J1



BC 3-0406

A40 & A41 series actuator technical data

Approximate Stroke Speed (Secs)Thrusts of valves with positioner

Spring Pneu. Min Spring Pneu. Min Bench No BoosterRange Thrust Spring Range Thrust Spring Set Booster

(Norm) Thrust (Max) ThrustPSI Bar lbf kgf lbf kgf PSI Bar lbf kgf lbf kgf Apply Vent Apply Vent

3-15 3000 150 9-21 2735 435 Min 2 4 0.5 0.50.2-1.0 1360 70 0.6-1.4 1240 200

6-30 2250 300 19-43 1650 940 Max 5 7 1 10.4-2.0 1020 140 1.3-2.9 750 430

3-15 3000 150 9-21 2735 435 Min 2 4 0.5 0.50.2-1.0 1360 70 0.6-1.4 1240 200

6-30 2250 300 12-35 2010 580 Max 5 7 1 10.4-2.0 1020 140 0.8-2.4 910 260

3-15 4500 300 9-21 3470 870 Min 6 12 1.5 1.50.2-1.0 1984 140 0.6-1.4 1580 395

6-30 3000 600 12-35 2020 1160 Max 13 21 3 30.4-2.0 1350 280 0.8-2.4 920 530

3-15 4500 300 12-25 3035 1305 Min 6 12 1.5 1.50.2-1.0 1984 140 0.9-1.7 1380 590

6-30 3000 600 11-35 2020 1160 Max 13 21 3 30.4-2.0 1350 280 0.8-2.4 920 530

3-15 4500 300 12-25 3035 1305 Min 6 12 1.5 1.50.2-1.0 1984 140 0.9-1.7 1380 590

6-30 3000 600 12-35 2020 1160 Max 13 21 3 30.4-2.0 1350 280 0.8-2.4 920 530

3-15 4500 300 7-19 3615 725 Min 9 12 3 30.2-1.0 1984 140 0.5-1.3 1640 330

6-30 3000 600 11-35 2020 1160 Max 12 25 5 50.4-2.0 1350 280 0.8-2.4 920 530

3-15 9000 600 12-24 4360 2320 Min 16 32 5 50.2-1.0 4000 270 0.8-1.6 1980 1720

6-30 6000 1200 14-38 1460 2900 Max 23 40 9 70.4-2.0 2710 550 1.0-2.6 660 1320

3-15 4500 300 10-22 3325 1015 Min 12 15 4 50.2-1.0 1984 140 0.7-2.3 1510 460

6-30 3000 600 10-34 2165 1015 Max 15 30 7 70.4-2.0 1350 280 0.7-2.3 985 460

3-15 9000 600 12-24 4360 2320 Min 16 36 5 50.2-1.0 2730 270 0.8-1.6 1980 1720

6-30 6000 1200 14-38 1460 2900 Max 23 40 9 70.4-2.0 2710 550 1.0-2.6 660 1320

3-15 9000 600 12-24 4360 2320 Min 24 36 6 60.2-1.0 4000 270 0.8-1.6 1980 1720

6-30 6000 1200 16-40 1170 3190 Max 36 40 12 70.4-2.0 2710 550 1.1-2.7 530 1450

3-15 9000 600 10-22 4650 2030 Min 27 54 8 100.2-1.0 4000 270 0.7-1.5 2110 920

6-30 6000 1200 16-40 1170 3190 Max 56 70 10 160.4-2.0 2710 550 1.1-2.7 530 1450

3-15 9000 600 12-24 4360 2320 Min 24 36 6 60.2-1.0 4000 270 0.8-1.6 1980 1720

6-30 6000 1200 16-40 1170 3190 Max 36 40 12 70.4-2.0 2710 550 1.1-2.7 530 1450

3-15 9000 600 10-22 4650 2030 Min 27 54 8 100.2-1.0 4000 270 0.7-1.5 210 920

6-30 6000 1200 16-40 1170 3190 Max 56 70 10 160.4-2.0 2710 550 1.1-2.7 530 1450

3-15 13500 900 10-22 11400 3000 Min 45 60 15 200.2-1.0 6000 408 0.7-1.5 5031 1360

6-30 9000 1800 10-34 7800 3000 Max 55 70 18 250.4-2.0 4060 774 0.7-2.3 3483 136020-40 6000 6000 NA NA NA1.4-2.8 2515 2710 NA NA NA

3-15 13500 900 10-22 11400 3000 Min 50 82 19 300.2-1.0 6000 408 0.7-1.5 5031 1360


3-15 13500 900 10-22 11400 3000 Min 45 60 15 200.2-1.0 6000 408 0.7-1.5 5031 1360


3-15 13500 900 10-22 11400 3000 Min 50 82 19 300.2-1.0 6000 408 0.7-1.5 5031 1360


3-15 13500 900 10-22 11400 3000 Min 65 110 22 350.2-1.0 6000 408 0.7-1.5 5031 1360


3-15 13500 900 10-22 11400 3000 Min 70 125 30 450.2-1.0 6000 408 0.7-1.5 5031 1360


3-15 13500 900 10-22 11400 3000 Min 85 140 35 480.2-1.0 6000 408 0.7-1.5 5031 1360


Size Data Design Conditions

Size Area Yoke Tra,L Max Initial Swept TotalCode Mtg Work Vol Vol Vol

Sq in Press in3 in3 in3

Sq cm PSI Bar mm3 mm3 mm3

DB4 50 2 1⁄8 1 75 50 50 100320 54 25.4 5.2 820 820 1640

DB5 50 2 1⁄8 1 1⁄8 75 50 56.25 106.25320 54 28.6 5.2 820 920 1740

GB4 100 2 1⁄8 1 60 100 100 200640 54 25.4 4.1 1640 1640 3280

GB5 100 2 1⁄8 1 1⁄8 60 100 112.5 212.5640 54 28.6 4.1 1640 1840 3480

GD5 100 2 13⁄16 1 1⁄8 60 100 112.5 212.5640 71.4 28.6 4.1 1640 1840 3480

GD6 100 2 13⁄16 1 1⁄2 60 100 150 250640 71.4 38 4.1 1640 2460 4100

KD6 200 2 13⁄16 1 1⁄2 60 200 300 5001290 71.4 38 4.1 3275 4910 8185

GF7 100 3 9⁄16 2 1⁄4 60 100 225 325640 90.5 57.2 4.1 1640 3690 5330

KF6 200 3 9⁄16 1 1⁄2 60 200 300 5001290 90.5 38 4.1 3275 4910 8185

KF7 200 3 9⁄16 2 1⁄4 60 200 450 6501290 90.5 57.2 4.1 3275 7370 10645

KF8 200 3 9⁄16 3 1⁄2 60 200 700 9001290 90.5 89 4.1 3275 11470 14745

KJ7 200 5 2 1⁄4 60 200 450 6501290 125 57.2 4.1 3275 7370 10645

KJ8 200 5 3 1⁄2 60 200 700 9001290 125 89 4.1 3275 11470 14745

LF7 300 3 9⁄16 2 1⁄4 60 300 675 9751935 90.5 57 4.1 4915 11060 15975

LF8 300 3 9⁄16 3 1⁄2 60 300 1050 13501935 90.5 89 4.1 4915 17206 22121

LJ7 300 5 2 1⁄4 60 300 675 9751935 125 57 4.1 4915 11060 15975

LJ8 300 5 3 1⁄2 60 300 1050 13501935 125 89 4.1 4915 17206 22121

LJ9 300 5 5 60 300 1500 18001935 125 127 4.1 4915 24580 29495

LJE 300 5 7 60 300 1800 21001935 125 152 4.1 4915 29412 34327

LJE 300 5 7 60 300 2100 24001935 125 178 4.1 4915 34412 39327


BlakeboroughMULTI SPRING ACTUATORS

BC 3-0406

Description

The Hopkinsons range of multi-spring diaphragmactuators is designed to suit the majority of controlapplications and offer an economical solution to valvecontrol. The unit features a high integrity steel casingwhich houses the spring return mechanism. The designheight of the actuator is reduced when compared toconventional single spring actuators.

The multi-spring diaphragm actuator is available in eitherreverse acting (A61) or direct acting (A60) type. Bothranges are suitable for modulating applications whenused in conjunction with a suitable control device.Alternatively they can be used for On/Off applications.

A number of optional features can also be specified suchas manual handwheels or travel limit stops. The simplicityof design of the actuator enables routine maintenance inthe field without the need for removal of the actuator tothe workshop.

Design features

• Economical design

• Side and top mounted handwheels

• Compact design with reduced height

• High strength actuator case with rugged design

• Low volume between diaphragm and actuator case

• High stability

• Low hysteresis

• Diaphragm - Buna ‘N’ nitrile rubber (other materialson request)

Pressure/temperature rating

• Pressure 5 Bar (73 PSI)

• Temperature -40°C to 120°C (-40°F - 248°F)

Sizes

• 50 in2 (320 cm2) • 225 in2 (1450 cm2)

• 85 in2 (550 cm2) • 326 in2 (2100 cm2)

• 147 in2 (950 cm2)

Travels

• 19mm to 178mm • 3⁄4" to 7"

Materials of Construction

• Yoke - Nodular cast iron (carbon steel on request)

• Case - High integrity carbon steel

• Spring - High tensile spring steel

• Diaphragm - EPDM, Fabric Reinforced with Polyester(other materials on request)

A60A - Direct Acting (85in2)

A61A - Reverse Acting (85in2)


Blakeborough MULTI SPRING ACTUATORS

BC 3-0406

A60 & A61 series

The Hopkinsons, spring return diaphragmactuators come in two basic forms, the type A60which is direct acting and the A61 which isreverse acting. Both are designed with a cast ironyoke (carbon steel on request) and a highintegrity carbon steel diaphragm case.

The A60 actuator is designed with an air tightupper chamber and when air is applied thepressure pushes the actuator stem downwards.When air is released the spring force lifts theactuator stem upwards.

The A61 actuator has a pressure tight lowerchamber and when air is applied pressure lifts theactuator stem. When air is released the actuatorspring pushes the stem downwards.

The spring chamber features four diametricallyopposed springs which give the actuator its failaction. The compact nature of the spring designmeans that the actuator height is substantiallyreduced when compared to conventional singlespring actuators.

The yoke section of the actuator is designed toNAMUR standards which means that the majorityof European designed positioners andinstrumentation will mount, and areinterchangeable, with the minimum of effort.

One of the main benefits of the multi springactuator is that the design of the air cylindermeans that the unit is field reversible without theneed to purchase new parts. This enables theengineer to change the fail action of the valve inthe field with very little effort.

Side mounted

Handwheels are designed to give an overridefacility to the operator to bypass the controlsignal that is controlling the valve thereforeallowing manual intervention in the controlsystem. The side mounted handwheel is modularin construction and is secured as an intermediatesection between the yoke and the diaphragmcasing.

When the handwheel is engaged movement ofthe valve is achieved by turning the handwheel.To put the valve in automatic operation thehandwheel can be disengaged. A finger pointerindicated the position of the handwheel.

The handwheel can also be used as a limit stop tolimit travel in either direction (though not at thesame time)

A60B - Direct Acting (85in2)

Top mounted

Top mounted handwheels are supplied as analternative to the side mounted handwheel wherefor example space may be limited or access is onlyavailable from the top.

They are designed principally as a travel limitstop, however the top mounted handwheel canbe used to give manual control of the valve.

A61B - Reverse Acting (85in2)


BlakeboroughMULTI SPRING ACTUATORS

BC 3-0406

A60 & A61 series actuator dimensions

*E.C. (Engineering Consult)

Size Area Act’r Travel Basic WeightCode Mount Dia Unit with D H J H1 P

Sq in Inch Inch Weight H/W Inch Inch Inch Inch Inch(Sq cm) (mm) (mm) (kg) (kg) (mm) (mm) (mm) (mm) (mm)

D 50 2 1⁄8 1

280 (320) (54) (25.4)

2 1⁄8 1 1⁄8 11 17.3 24.6 25.6 9.8

(54) (28.6)25 40

(280) (440) (625) (650) (250)

2 13⁄16 11⁄2

(71.4) (38)

E 85 2 1⁄8 1

360 (550) (54) (25.4)

2 1⁄8 1 1⁄8 18.9 26.2 27.2

(54) (28.6) 14.2 (480) (665) (690) 9.8

2 13⁄16 11⁄2

35 55(360) (250)

(71.4) (38)

3 9⁄16 2 1⁄4 19.7 27.0 28.0

(90.5) (57.2) (500) (685) (710)

H 147 2 1⁄8 1

450 (950) (54) (25.4)

2 1⁄8 11⁄8 20 30.7 30.9

(54) (28.6) (506) (781) (786)

2 13⁄16 11⁄2 17.7 11.8

(71.4) (38)85 105

(450) (300)

3 9⁄16 21⁄4 22.4 33.3 33.5

(90.5) (57.2) (570) (845) (850)

3 9⁄16 31⁄2 23.6 34.4 34.6

(90.5) (89) (600) (875) (880)

I 225 2 13⁄16 11⁄2 22.1 37.9

550 (1450) (71.4) (38) (562)N/A

(962)

3 9⁄16 21⁄4 24.8 40.6

(90.5) (57.2) (630)N/A

(1030)

3 9⁄16 31⁄2 21.7 11.8

(90.5) (89)120 140

(550) (300)

(5) 3 1⁄2 E.C. N/A E.C..

(125) (89)

(5) (5)

125 127

J 326 (5) 21⁄4

650 (2100) (125) (57.2)

(5) 3 1⁄2

(125) (89) 25.6

(5) (5) E.C E.C (650) E.C E.C E.C

(125) (127)

(5) 6

(125) (152)

(5) 7

(125) (178)


Blakeborough MULTI SPRING ACTUATORS

BC 3-0406

A60 & A61 series actuator technical data

Special Notes:1) E.C. (Engineering Consult)2) Approximate Stroking speed of valves with positioner

Size Area Act’r Travel Design Condition Thrusts Stroke Time (secs)Code Mount Dia Max Work Initial Vol Swept Vol Total Vol Spring Min No Booster Booster

Sq in Inch Inch Press in3 in3 in3 Range Thrust Apply Apply(Sq cm) (mm) (mm) psi(kg/cm2) (cm3) (cm3) (cm3) psi (kg/cm3) lbf (kgf) Vent Vent

MIN MAX MIN MAX

D 50 2 1⁄8 1 43.3 57.85 101.15 3 - 15 141 2 5 0.5 1

280 (320) (54) (25.4) (710 (948) (1658) (0.2 - 1.0) (64) 5 7 0.5 1

2 1⁄8 1 1⁄8 73 43.3 65.2 108.5 12 - 30 564 2 5 0.5 1

(54) (28.6) (5) (710) (1068) (1778) (0.8 - 44) (256) 4 7 0.5 1

2 13⁄16 11⁄2 43.3 86.5 129.8 18 - 44 847 4 8 2 4

(71.4) (38) (710) (1418) (2128) (1.2 - 3.0) (384) 7 10 3 5

E 85 2 1⁄8 1 83 100 183 3 6 1 2

360 (550) (54) (25.4) (1360) (1643) (3003) 3 - 15 243 6 8 1 2

2 1⁄8 1 1⁄8 83 112.9 195.9 (0.2 - 1.0) (110) 3 6 1 2

(54) (28.6) 73 (1360) (1850) (3210) 12 - 30 970 6 8 1 2

2 13⁄16 11⁄2 (5) 83 150 233 (0.8 - 2.0) (440) 5 9 3 5

(71.4) (38) (1360) (2458) (3818) 18 - 44 1455 8 11 5 7

3 9⁄16 2 1⁄4 83 225.8 308.8 (1.2 - 3.0) (660) 8 12 5 7

(90.5) (57.2) (1360) (3700) (5060) 12 16 7 8

H 147 2 1⁄8 1 131 157.7 288.7 8 16 5 7

450 (950) (54) (25.4) (2140) (2585) (4725) 14 25 8 10

2 1⁄8 11⁄8 131 177.6 308.6 3 - 15 419 8 16 5 7

(54) (28.6) (2140) (2911) (5051) (0.2 - 1.0) (190) 14 25 8 10

2 13⁄16 11⁄2 73 131 236 367 12 - 30 1676 5 9 3 6

(71.4) (38) (5) (2140) (3868) (6008) (0.8 - 2.0) (760) 8 11 4 9

3 9⁄16 21⁄4 131 355.3 486.3 18 - 44 2514 8 12 5 8

(90.5) (57.2) (2140) (5822) (7962) (1.2 - 3.0) (1140) 12 16 7 10

3 9⁄16 31⁄2 131 553 684 12 18 8 10

(90.5) (89) (2140) (9060) (11200) 20 2 12 14

I 225 2 13⁄16 11⁄2 225 370.4 595.4 16 23 5 8

550 (1450) (71.4) (38) (3680) (6070) (9750) 32 40 9 11

3 9⁄16 21⁄4 225 557.6 782.6 3 - 15 639 24 36 6 12

(90.5) (57.2) (3680) (3680) (9138) (0.2 - 1.0) (290) 36 40 11 14

3 9⁄16 31⁄2 73 225 867.7 1092.7 12 - 30 2558 27 56 10 12

(90.5) (89) (5) (3680) (14220) (17900) (0.8 - 2.0) (1160) 54 70 14 16

(5) 3 1⁄2 225 867.7 1092.7 18 - 44 3837 27 56 10 12

(125) (89) (3680) (14220) (17900) 35 70 14 16

(5) (5) 225 1238.2 1463.2 27 56 10 12

125 127 (3680) (20290) (23970) 71 97 18 25

J 326 21⁄4

650 (2100) (57.2)

3 1⁄2 3 -15 926

(89) (0.2 - 1.0) (420)

E.C. (5) 71 E.C. E.C. E.C. 12 - 30 3704 E.C.

(127) (5) (0.8 - 2.0) (1680)

6 18 - 44 5557

(152) (1.2 - 3.0) (2520)

7

(178)


BlakeboroughACTUATORS - TYPICAL PIPING

BC 3-0406

The range of instrument combinations for spring return actuators isvirtually endless, however, the most common combinations are shown.

On/Off applications with solenoid and airset (Fig 1)

The actuator is fitted with a solenoid and airset as shown. The solenoid isconnected to the side of the diaphragm chamber to be pressuriseddepending on actuator action. The regulated air supply is connected tothe solenoid through the airset. The airset pressure setting should be lessthan the maximum diaphragm pressure. Air can then be either applied orvented from the actuator via the solenoid thereby opening or closing thevalve.

Normal positioning applications (Fig 2)The actuator is fitted with positioner and airset. The positioner is linked toeither the upper or lower actuator chamber depending on actuator action and increases or decreases the air pressure to the actuator thereby positioning the valve. The change in air pressure is controlled by the positioner in response to an instrument signal (normally 3 to 15 PSI or 4 to 20mA) fed to the positioner from the control system. The airset is usedto both limit the maximum air pressure in the system to avoid over-pressurising the actuator, and to filter the air to remove foreign particles from the system.

Fast action fitted with volume boosters (Fig 3)The principle of operation of a valve fitted with volume boosters isidentical to that described above except that the positioner output ispiped directly to the signal connection on the booster, instead of into thediaphragm case. The booster, in relation to the control signal from thepositioner either opens or closes. This allows a higher volume of air toeither energise or vent from the actuator than would pass through aconventional positioner. The maximum pressure of air allowed to pass tothe actuator is controlled by the setting of the airset.

Air fail valve stays put with the positioner and airset (Fig 4) In normal operation the actuator responds to the valve positioner asdescribed above. To achieve a fail fix condition on air failure the trip valvesenses a supply failure in the air pilot line. When this condition occursthe ports of the trip valve connected to the valve positioner aredeactivated and air is locked into the actuator chamber. If any air leaksoccur in the pipework then the actuator will revert to the inherent failposition of the actuator.

Solenoid trip valve opens or closes (Fig 5)In normal operation and fail condition this arrangement operates asdescribed above. To operate from an electrical signal a solenoid valve isconnected in the air line between the positioner and diaphragm case.Once the solenoid is tripped this vents air from the diaphragm chamberand the spring return action of the actuator returns the actuator to itsrelaxed state.

FIG 1

RA

DA

3-WAY SOLENOID VALVEELECT. SUPPLY

AC

BEXHAUST

AIR SUPPLY

FILTERREGULATOR

FIG 2

RA

DA

AIR SUPPLY

FILTERREGULATOR

INSTRUMENTSIGNAL

P0POSITIONER1A P1

FIG 3

RA

DA

AIR SUPPLY

FILTERREGULATOR

INSTRUMENTSIGNAL

P0POSITIONER1A P1

61H

BOOSTERRELAY

FIG 4

RA

DA

INSTRUMENTSIGNAL

P0POSITIONER1A P1

AIRSUPPLY

FILTERREGULATOR

AC61A

A

BC

FIG 5

RA

DA

AIR SUPPLY

FILTERREGULATOR

INSTRUMENTSIGNAL

P0POSITIONER1A P1

ELECT. SUPPLYAC

BEXHAUST

3-WAY SOLENOID VALVE


Blakeborough ACTUATORS - CODING

BC 3-0406

Basic Actuator Model Number

A40 - Direct acting diaphragmA41 - Reverse acting diaphragmA50 - Direct acting pistonA51 - Reverse acting pistonA36 - Double acting pistonA60 - Direct acting multi spring diaphragmM1 - ManualW1 - Lever Design Feature

A - StandardB - Side Handwheel C - Top Handwheel

Size (Effective Area)

D - 50 in2 (320 cm2)E - 85 in2 (550 cm2)F - 75 in2 (480 cm2)G - 100 in2 (640 cm2)H - 147 in2 (950 cm2)I - 225 in 2 (1450 cm2)J - 326 in2 (2100 cm2)K - 200 in2 (1290 cm2)L - 300 in2 (1935 cm2)M - Manual Actuator

Yoke Mounting

B - 2 1⁄8” (54 mm)D - 2 13⁄16” (71.6 mm)F - 3 9⁄16” (90.5 mm)J - 5” (127 mm)N - 7” (177.8 mm)

Stroke

2 - 3⁄4” (19 mm)4 - 1” (25.4 mm)5 - 1 1⁄8” (28.5 mm)6 - 1 1⁄2” (38.1 mm)7 - 2 1⁄4” (57.1 mm)8 - 3 1⁄2” (88.9 mm)9 - 5” (127 mm)E - 6” (152 mm)F - 7” (177.8 mm)G - 9” (228.6 mm)

Stem Connector Thread

M - M8 x 1 mm pitchN - M10 x 1.25 mm pitchP - M12 x 1.25 mm pitchR - M16 x 1.5 mm pitchU - M20 x 1.5 mm pitchS - M22 x 1.5 mm pitchT - M22 x 1.5 mm pitch anti-rotation V - M33 x 2 mm pitch anti-rotationW - M39 x 2 mm pitch anti-rotation

Spring Range

A - 3 to 15 PSI or 0.2 to1.0 kg/cm2

B - 6 to 30 PSI or 0.4 to 2.0 kg/cm2

C - 12 to 30 PSI or 0.8 to 2.0 kg/cm2

D - 18 to 44 PSI or 1.2 to 3.0 kg/cm2

Modification

Blank- No modification0 - No air connection2 - 3⁄8” air connection3 - 1⁄2” air connection4 - 3⁄4” air connectionP - Stainless steel packing boxL - LCB YokeW - WCB YokeS - St.St. construction-Std paintT - St.St. construction-SPL paint

B G FA60 8 S B –

Sales/manufacturing:

Weir Valves & Controls UK LtdTel: +44 (0) 1422 282000Fax: +44 (0) 1422 282100Email: [email protected]

Weir Valves & Controls France SASSebim siteTel: +33 (0) 4 42 07 00 95Fax: +33 (0) 4 42 07 11 77Email: [email protected] siteTel: +33 (0) 3 21 79 54 50Fax: +33 (0) 3 21 28 62 00Email: [email protected]

Weir Valves & Controls USA IncTel: +1 978 744 5690Fax: +1 978 741 3626Email: [email protected]

Regional sales offices:

CanadaTel: +1 905 812 7100Fax: +1 905 812 0069Email: [email protected]

ChinaTel: +86 10 8528 8315-7Fax: +86 10 8528 8318Email: [email protected]

MalaysiaTel: +60 3 2287 3560Fax: +60 3 2287 3561Email: [email protected]

Middle EastTel: +971 4 883 6396Fax: +971 4 883 6126Email: [email protected]

KoreaTel: +82 31 493 7979Fax: +82 31 495 3737Email: [email protected]

AustraliaTel: +61 2 4349 2999Fax:+61 2 4349 2900Email: [email protected]

South AfricaTel: +27 1 1929 2906Fax:+27 1 1929 2925Email: [email protected]

Division head office:

Weir Valves & ControlsTel: +44 (0)1484 824200Fax: +44 (0)1484 824230Email: [email protected]

Weir Valves & Controls UK Ltd

Britannia HouseHuddersfield RoadElland, West YorkshireHX5 9JR England

Tel: +44 (0) 1422 282 000Fax: +44 (0) 1422 282 100Email: [email protected]

ExcellentEngineeringSolutions

BC 3-0406

Local Representative

A list of worldwide agents is available onrequest

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