180154666 balancing flow control valves pdf

balancing & flow control valvesfrese 3.1

quick reference introduction

frese valves 3.12alpha / s / sh+ / eva / optima / circon+/temcon+

oventrop 3.47necessity of hydronic Balancing / mode of operation of valves & controlsspecifying engineers calculation / heating & cooling systems

oventrop valves 3.55hydrocontrol r/f/fs/fr / hycocon v / cocon q / flow charts / hydromat dp

oventrop flow measuring 3.89hydronic Balancing on site / ov-dmc 2 flow meter

comdronic ac6 3.92

June 20103.1

balancin

g & flow

control valves frese q

uick referen

ce

frese quick reference

UKINFO0002JAN05

QUICK

REFERENCE

COMBIN

NG

CARTRDGES

AND

HOUSINGS

Automatic Balancing Valves

ACartridge

type

Z,A&B

ALP

HACartridge

type

30&40

ALP

HACartridge

type

10,11

,20

ALPHADN50

ALPHADN65

ALPHADN80

Forflanges

Forflanges

Forflanges

ALPHADN100

ALPHADN125

ALPHADN150

ALPHADN200

ALPHADN250

ALPHADN300

ALPHADN350

ALPHADN450

ALPHADN400

ALPHADN500

ALPHADN600

ALPHADN800

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the information provided in this catalogue is based on original manufacturers designs and specifications and subject to change without notice. crane Distribution accepts no liability for the accuracy of the information or the availability of products.3.2

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frese introDuctionScopethis section contains an account of why it is necessary to balance a water distribution system for the distribution of heating or cooling effects, the considerations that should be made before the system is designed, the result of balancing and the difference between a static and a dynamic balancing valve.

What iS a Balanced SyStem?definition: a distribution system is in balance when the flow in the whole system (through the component terminal lines, distributing lines and main distributing lines) corresponds to the flow rates that were specified for the design of the system.

the dimensioned hydraulic condition of operation can be simulated by means of the opening of all the valves regulating the flow depending on the temperature (room temperature, outdoor temperature or medium temperature) either as manual radiator valves, self-regulating thermostatic valves or electrically actuated valves.

in practice it is recommended that balance is established by means of a number of balancing valves that can be pre-set individually to an assessed orifice dimension. together with the rest of the system they will then establish the exact flow resistances to ensure a correct distribution of the flowing medium.

Figure 2.1 shows an outline of a minor section of a balanced water distribution system. referring to the figure above the distribution system is in balance when the system contains a number of regulation valves that have been pre-set to be mutually dependent so that the flow through the component terminal lines, distributing lines and main distributing lines corresponds to the flow rates that were specified for the design of the system.

Figure 2.1 a balanced section with a distributing line for three terminals.

June 20103.3

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g & flow

control valves frese in

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frese introDuctionin an analogue electric system the balancing valves are comparable with a variable resistance, and the resistance of the pipes with the corresponding wiring resistance, and the effective heating-/cooling surfaces with a load resistance (fig. 2.2). the distribution of the electric power through the component load resistances, distributing lines and main distributing lines, depends on the distribution of the resistance in the circuit, similarly to a water distribution system.

the need For Balancingif the correct balancing of the system has not been established, this will result in an unequal distribution of the flow, so that there will be a surplus effect in some of the terminals, whereas the effect will be inadequate in others. the result of this will be that the wanted heating/chilling will not be ensured in all parts of the installation.

in practice it is not possible to make a correctly balanced system by manipulation of the piping or alteration of the pipe dimensions only.

only a correct adjustment of the balancing valves shown in figure 2.1 will ensure the correct distribution of the flow in the system.

deSign conSiderationSthe engineer in charge of the design and installation of a system should aim at: Substantialoperatingeffectiveness Achievementoftherequiredcomfortatthelowestoperating

costs possible Avoidingunnecessarywasteofenergyresources.

for the design and selection of equipment for the balancing and control of a system the following should be taken into consideration:(a) type of application(b) type of the building in question(c) the required room temperature/comfort(D) type of the hot domestic water supply(e) acceptable deviations from the comfort parameters(f) Minimization of the primary energy(g) application of heat recycling(H) economic factors

the result of (c), (e) and (f) is very much dependent on the correct distribution of the flow in the system. therefore the quality of the balancing should meet the the required comfort and energy efficiency.

the quality of the balancing is partly dependent on the type of the required balancing valves (static versus dynamic valves, ref. the following section), compared with the required adjustment method, and partly the design of the required components for the verification of the flow in the system.

the following quality parameters should be specified during the phase of design: Typeofbalancingvalves Adjustmentmethod Verificationofflow,whereandhow? Acceptabledeviationsoftheflow

Figure 2.2 an analogue electric system


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frese introDuctionthe reSult oF Balancinga satisfactorily balanced installation will show the following results: Correctflowinboilersandchillers. Correctdistributionofflowandeffectinthewholesystem. Compatibilitybetweenallflowratesinprimaryandsecondary

lines.

these results will ensure the following benefits: Theroomtemperatureisadjustablewithinthespecificdeviations. Energysavingasaresultofthefavourableconditionsofthe

equipment that controls the energy transfer. Achievementoftherequiredindoorclimate.

Why are Balancing ValVeS required?We answer that question on the basis of figure 2.3

the figure shows a schematic outline of a simple installation that contains a boiler/chiller, three identical terminals with the same flow requirement, and a pump to make the heat transfer medium, i.e. water or water/glycol circulate in the system. the top half of the diagram represents the pressure distribution throughout the schematic layout shown in the lower half of the diagram. the branch nodes are indicated on both the distribution diagram and the schematic by the small lettering.

in the piping there will be friction between the flowing medium and the pipe wall. this frictional loss makes the pressure decrease along the pipe in the direction of the flow. this will be seen from the falling pressure line between the branching points.

the flow rate between two points is determined by the pressure differential between the points and the resistance of pipes, valves and terminals against the flow. the arithmetic coherence can be expressed by the equation to the left.

the resistance of value r can be read from tables, please see the respective product catalogues. the exponent n varies in relation to the pipe sizing.

Figure 2.3 simple installation and its pressure distribution.

qvn = p/(R . rn), in which qv = flow p = pressure drop R = resistance of pipes, single resistances

(fittings, terminals etc.) and valves n = exponent r = density

June 20103.5

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frese introDuctionthe pressure drop Delta p1 is referred to as the index circuit. the index circuit is the circuit that has the highest resistance to flow. it is normal for this to be the circuit most remote from the pump. this pressure drop can be found by means of the equation delta p1 = r1 x (qv x r)n, in which the resistance of the terminal r1 and the wanted flow q v are known values.

the pressure drop across the three identical terminals will be the same, provided the same flow is required through all of them, i.e. Delta p1 = Delta P2 = Delta p3.

in order to bring about this identical pressure drop across the terminals and associated piping it is necessary to connect another resistance in series with the resistances of the terminals, so that the residual pressure drop between branching points bf and cg can be absorbed.

if the installation in question is not equipped with balancing valves after terminals (2) and (3), the flow through the three terminals will vary so that terminal (3) will be exposed to the major flow, terminal (2) to a smaller flow, and terminal (1) to the smallest flow. in that case the system will not be in the required state of balance.

figure 2.4 shows the distribution of the pressure drop between branching points bf. from this you will see that the adjustment of the regulating valve to the required resistance value has to be carried out with regard to not only the terminal but also the connecting pipes.

the final adjustment is usually carried out by indirect measurement of the flow through the regulating valve simultaneously with measurement of the flow through terminal (1). the regulating valve to terminal (2) is to be adjusted to ensure that the proportion of the measured flow rates through terminals (1) and (2) is the same as the one between the indexed flow rates between the two terminals.

Hereafter the valve is adjusted to terminal (3) to ensure that the proportion between the measured flow rates through terminals (3) and (2) is the same as the one between the indexed flow rates between the two terminals.

this adjustment method is called the proportional method.

Figure 2.4 absorbing 'residual' pressure


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frese introDuctionthe diFFerence BetWeen a Static & a dynamic Balancing ValVeusually you will not find an indication of the resistance value of a valve in valve catalogues and data sheets. on the other hand, the producer always states a flow coefficient referred to as kv or cv (american products). this is also called the flow coefficient of the valve.

the flow coefficient of kv is defined to be the flow of water (density 1 kg/litre) through the valve, when the differential pressure across the valve is 1 bar. the designation of this flow is m3/hour.

the flow coefficient of cv is defined as the flow of water (density 1 kg/litre) through the valve, when the differential pressure across the valve is 1 psi (lb/inch2). the designation of this flow is gPM (us gallon/min.).

Hereafter the mathematic coherence between the flow and the differential pressure of the valve can be expressed as follows:

as regards the 2-position and balancing valves, the indicated flow coefficient of kv refers to the completely open valve.

a feature of a static circuit balancing valve is that the open orifice area (k value) can be changed manually and fixed into a static value. the kv value can now be obtained by referring to the hand wheel position in relation to the calibration graph of the valve. the valve should be equipped with 2 pcs. isolation test plugs to which the measuring equipment for indirect flow measurement can be connected.

the valve can be pre-adjusted on the basis of a calculated pressure distribution in the whole Hvac installation. Please note that the calculation of large, complex installations may involve a considerable inaccuracy. further, the valve can be pre-adjusted on the basis of an adjustment after the installation, e.g. according to the proportional method.

a dynamic circuit balancing valve is the next step in balancing valves that was introduced onto the market forty years ago. one of its features is that it can be pre-adjusted to a given flow and be locked to ensure this flow.

the valve is an automatic regulator valve that with a reference to the differential pressure automatically adjusts to the kv value necessary to maintain the required flow. the kv value of the valve automatically compensates for any changes of the differential pressure, so that the flow will never exceed the pre-set flow.

these valves are available in types that have been calibrated in the factory to the rated flow, and in types the indexed flow of which can be pre-adjusted by the user before or after the installation of the valve in the system, or from the outside as the system is working. the valve can be used on the basis of the calculated flow without regard to the distribution of pressure in the system.

figure 2.5 illustrates the difference between the static and the dynamic application in the form of flow variation as a function of the differential pressure across the valves at a given pre-adjustment.

as will be seen from the chart, the flow through the static valve will increase as the differential pressure increases, and decrease as the differential pressure falls, whereas the dynamic balancing valve will maintain a constant flow (within the regulation range) independently of the differential pressure within the dynamic balancing valve.

further, please note that the indexed flow (100%) through a static balancing valve will not be achieved unless the differential pressure across the valve is equal to the indexed differential pressure delta p.

Figure 2.5 the valve features of a static circuit balancing valve and a dynamic circuit balancing valve respectively at a given pre-adjustment value.

qv = kv p/rr qv in m3/hour when p is in bar (gauge)qv = cv p/rr qv in gPM (us) when p is in psi

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frese introDuctionWhen are FloW meaSurement deViceS required?Static Systems: During the adjustment it should be possible to measure the flow through each terminal (coil in air-condition, not radiators in heating systems), distributing line, main distributing line and supply line.

the measurements will typically be carried out as an indirect measurement, i.e. measurement of the differential pressure converted into a flow value in relation to the kv value of the measured device. the measurements are carried out across each circuit-balancing valve with the kv value relative to the valve setting and the associated flow chart. the accuracy of the measured flow is not likely to be better than +/- 25% dependent on the hand wheel position. this inaccuracy should be taken into consideration in connection with the verification of the flow. still, it is of no particular importance to the relative comparison between the flow through the individual terminals and distributing lines during the balancing procedure.

dynamic Systems: Dynamic valves will typically balance the system at an accuracy of +/- 5% of the rated flow. so, as direct measurements involve a degree of accuracy of +/- 25%, it will be inappropriate to verify the flow through the individual terminals.

instead, measurement/verification of the flow in the supply line is recommended. for verification of the flow in the supply line it is recommended that a fixed orifice device is used with a specified accuracy which is +/- 5% above that of the measured flow.

Where are Balancing ValVeS required?figures 2.6 and 2.7 show a section of the same system, in which figure 2.6 has been designed as a static system, and figure 2.7 as a dynamic system. the section contains one supply line for 3 main distributing lines, each of which has 3 distributing lines with 3 terminals each (totally 27 terminals).

in the static system each terminal has to be balanced in 9 groups of 3 terminals each. Hereafter the 9 terminal sections have to be balanced in 3 groups of 3 distributing lines each. after that the 3 main distributing lines have to be balanced. and finally the distributing line is adjusted to ensure the total design flow. this balancing procedure requires one balancing valve per terminal, one balancing valve per distributing line, one balancing valve per main distributing line and one balancing valve in the supply line.

in the dynamic system the individual terminals can be adjusted independently of each other. this simply requires one balancing valve per terminal.

Figure 2.6 water distribution system, static balancing.

Figure 2.7 water distribution system, dynamic balancing.


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frese introDuctionWhy uSe dynamic Balancing inStead oF Static Balancing?the adjustment of a dynamic system is quick and easy. all that is needed is the right pre-adjustment/balancing valve specified for the rated flow. there is no need for measurements for making comparisons between the flows of the individual balancing valves.

when the features of an installation are to be calculated, the only uncertain factor will be any inaccuracy in the calculated flow rate. when a dynamic balancing valve is used the uncertainty regarding the distribution of pressure in the installation and consequently the calculated kv values of the balancing valves is eliminated.

balancing valves are only needed for the individual terminals. there is no need for balancing valves in the distribution lines, main distribution lines and supply lines.

the individual terminals are 100% safe from overflow without regard to the load distribution in the installation and independent of the dynamic load variation in the installation. in an properly balanced static system overflow (up to 300-400%) may occur through some of the terminals.

the rated flow can be changed in one or more sections of the installation without upsetting the balance in the rest of the system. if the dimensional basis of the whole system turns out to be wrong after the installation, a static system can only be re-adjusted if the whole installation is re- adjusted.

the result of the adjustment is better when compared to static balancing, because the rated flow is controlled at an accuracy of +/- 5%.

after the installation the system can be changed/extended/restored without regard to the changes of the balance in the existing part of the system. in a corresponding static system this would often involve a change of the total design of the system.

From the foregoing, the following benefits of dynamic balancing can be stated: Quickandeasyadjustment Independentoferrors/unreliabilitiesinthecalculateddistribution

of pressure in the installation. Fewerbalancingvalves 100%safefromoverflow Unproblematicre-adjustments Moreeffectiveadjustment Greatflexibilityifthesystemischangedaftertheinstallation

due to these benefits the features of the system design will typically be as follows: Cheaperinstallation Bettercomfort Greaterflexibility Moreeconomicaloperation

June 20103.9

balancin

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control valves frese a

lpha

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frese alPHa cartriDgesapplicationthe frese alpha cartridges are particularly designed and manufactured for the automatic balancing of heating and cooling circuits. they are integral part of the frese automatic balancing valves keeping the flow constant at the specified level even under fluctuating pressure conditions. from small size valves (Dn15) to big wafer types (Dn800), from small heating units to sea-water district cooling applications, there is a frese alpha cartridge that can guarantee the specified flow.

the advanced patented design of the frese alpha cartridges introduces the orifice plate concept for higher performance and flexibility. with the frese alpha cartridges it is no longer needed to change the cartridge every time the design flow is modified. each cartridge contains an orifice plate specific for every flow that can be easily removed and replaced by another one.

adVantageS Onlyonedifferentialpressureoperatingrange(upto350kPa

for Dn15 to Dn50, up to 600 kPa for sizes Dn50 and upwards) making the sizing of the cartridge very easy (depending only on the design flow).

Complete,broadandwell-balanceddistributionofflowsforthefull range of heating and cooling applications (from 0.015 l/s and 7 kPa min. differential pressure to 11.381 l/s, per cartridge).

Minimizedfrictionandnoiseduetothepatentedcartridgedesignbased on the metal-rubber diaphragm-metal contact.

Improvedresponsetowaterhammerduetotheshockabsorptionby the rubber diaphragm of the cartridge.

Noimpactofdebrisontheperformanceofthecartridge.Thedesign of the inlet and the outlet areas makes the accumulation of particles inside the cartridge very difficult.

BeneFitSdesign Lesstimetodefinethenecessaryequipmentforahydraulic

balanced system. Noimpactifthecalculateddistributionofpressureinthe

installation is not accurate. Securitythatthespecifiedflowisalsotherealone. Flexibilityifthesystemismodifiedaftertheinitialinstallation.

installation Cartridgesolutionmakesflushingprocedureveryeasy. Quickandeasyinstallationofthecartridgeinthevalve. Minimizedcommissioningtimeduetoautomaticbalancingofthe

system.

operation Unproblematicperformanceevenwithhighconcentrationof

debris. Noiselessoperation. Highcomfortfortheend-users.


frese alPHa cartriDges

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0

0

1.94

1.67

1.39

1.11

0.83

0.56

0.28

100 200 300

[l/s]

[kPa]

FloW rate graph

schematic view of the flow development for cartridge type 40, frese number 50-44176. nominal flow 1.388 l/s. the cartridge enters the pressure range at 22 kPa and maintains the flow at a constant level all the way till 350 kPa.

cartridge operationwhen the pressure increases the spring will be compressed and there by the piston will reduce the outlet area and viceversa. the result is a constant flow rate through the valve, independent of pressure fluctuations.

indication oF FloW rate on the oriFice platea four-digit number on the orifice plate is identical with the last four digits in the frese number. the cartridge can be identified by means of this number and the corresponding flow rate can be read from the above flow rate tables.

3.24

3.52

3.83

4.12

Frese no. [gpm] [l/s]Flow Flow

[kPa]Min. DP

49-11735

49-11740

49-11745

49-11750

0.204

0.222

0.242

0.260

14

16

19

21

49 = HP High Pressure50 = LP Low pressure

tradelink stocks low Pressure (50=lP) type cartridges, with a pressure range up to 350 kPa for cartridge types 10, 11, 20, 30 and 40, for valve sizes Dn15 to Dn50.

June 20103.11

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control valves selectin

g flo

w rates fo

r glyco

l mixtu

res

selecting flow rates for glycol Mixtures

the graph indicates values of the specific gravity for specified percentage mixtures and operating temperatures

Formula

gPM =

gPMv

=

gPM = gPMv

deFinitionq- fluid flowqv - flow through valve, at measured conditions - viscosity correctionSg - specific gravity (to water)

method oF uSe For graph1. select the curve appropriate for the known percentage glycol/

water mixture.

2. identify the point on this curve corresponding to the system temperature during balancing.

3. Draw a horizontal line from this point to intersect the specific gravity scale.

sg

sg

correction Factor taBle

Viscosity centipoise 1 10 15 25 35 60 100 200 500

1 0.95 0.90 0.85 0.80 0.75 0.70 0.65 0.60

sg sg

0.60 0.775 1.29 1.23 1.16 1.10 1.03 0.97 0.90 0.84 0.78

0.65 0.806 1.24 1.18 1.12 1.05 0.99 0.93 0.87 0.81 0.75

0.70 0.837 1.20 1.14 1.08 1.02 0.96 0.90 0.84 0.78 0.72

0.75 0.866 1.16 1.10 1.04 0.98 0.92 0.87 0.81 0.75 0.69

0.80 0.894 1.12 1.06 1.01 0.95 0.89 0.84 0.78 0.73 0.67

0.85 0.922 1.08 1.03 0.98 0.92 0.87 0.81 0.76 0.71 0.65

0.90 0.949 1.05 1.00 0.95 0.90 0.84 0.79 0.74 0.69 0.63

0.95 0.975 1.03 0.97 0.92 0.87 0.82 0.77 0.72 0.67 0.62

1.00 1.000 1.00 0.95 0.90 0.85 0.80 0.75 0.70 0.65 0.60

1.05 1.025 0.98 0.93 0.88 0.83 0.78 0.73 0.68 0.63 0.59

1.10 1.049 0.95 0.91 0.86 0.81 0.76 0.72 0.67 0.62 0.57

1.15 1.072 0.93 0.89 0.84 0.79 0.75 0.70 0.65 0.61 0.56

1.20 1.096 0.91 0.87 0.82 0.78 0.73 0.68 0.64 0.59 0.54

1.25 1.118 0.89 0.85 0.81 0.76 0.72 0.67 0.63 0.58 0.54

1.30 1.140 0.88 0.84 0.79 0.75 0.70 0.66 0.62 0.57 0.53

1.35 1.162 0.86 0.82 0.78 0.73 0.69 0.65 0.60 0.56 0.52

1.40 1.183 0.85 0.80 0.76 0.72 0.68 0.63 0.59 0.55 0.51

FloW 'correction FactorS' Water/glycol mixtureS


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frese alPHa autoMatic balancing valveapplicationthe frese alpha valves are particularly designed and manufactured for the automatic balancing of heating and cooling circuits. the frese alpha cartridges - the second generation cartridges - are an integral part of the frese alpha valves limiting the flow at the specified level even under fluctuating pressure conditions. the patented design of these cartridges introduces a replaceable orifice plate for higher flexibility and a resistant diaphragm for higher accuracy. from small size threaded valves (Dn15) to big flanged type valves (Dn800), from small heating units to sea-water district cooling applications, frese alpha valves guarantee the hydraulic balance of the system regardless pressure fluctuations.

BeneFitSdesign Noneedtousebalancingvalvesinthedistributionlines,main

distribution lines and supply lines Lesstimetodefinethenecessaryequipmentfor

a hydraulic balanced system Noimpactifthecalculateddistributionofpressureinthe

installation is not accurate Securitythatthespecifiedflowisalsotherealone Norequirementsonpipelengthsbeforeandafterthevalve

installation Minimizedcommissioningtimeduetoautomaticbalancingofthe

system Cartridgesolutionmakesflushingprocedureveryeasy Noneedforoversizedpumpsandoversizedcontrolvalves

operation Energysavingsduetoeliminationofoverflows Highercomfortduetocorrectdistributionofwaterinthesystem

and to optimized function of the control valves Maintenance-freeoperationofthevalve

advantages Wideproductrangecoveringallapplications

- sizes from Dn15 to Dn800- different end connections (female/female, union connections,flanges),- dezincification resistant brass, ductile iron, naval bronze,- P/t plugs, drain, combi-drain,- kit solution with strainer and ball-valves, solution with integral ball-valve,

Balancingofthesystemtakesplaceautomaticallyevenunderfluctuating pressure conditions

Nomoreoverflowsinthesystem Modifications&extensionsofthesystem

do not affect the hydraulic balance in the other parts of the system

Tamperresistantcartridgeindependentof flow regulation errors during commissioning and operation of the system

Self-cleaningcartridgenotallowingdirttocompromisetheaccuracy of the valve

Resistantdiaphragmbetweenthemovingpartsofthecartridgeeliminates friction, noise and impact from water-hammer.

June 20103.13

balancin

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frese alPHa basic DynaMic balancing valveSpeciFicationbody brass (DZr) cw602n o-rings ePDM seal Ptfe flow cartridge brass (DZr) cw602n spring stainless steel Diaphragm Hbnr orifice Plate brass (DZr) cw602n accuracy +/- 5% Pressure class Pn25 Max Differential Pressure 350 kPaDMedia temperature -20c to +120c body tappings 1/4 iso flow rate range 0.007 l/s to 3.154 l/s size range Dn15 to Dn50 threads iso 228 female Parallel

deSign FeatureS1. automatic balancing valve with two colour coded test points for

differential pressure measurement. red is for flow and blue is the return side of the valve.

2. the unit will automatically limit the flow rate to +/- 5% of the selected flow rate.

3. the flow cartridge is removable from the valve for change of flow rate or flushing without removing the valve from inline.

4. only one differential pressure operating range (up to 350 kPaD) making the sizing of the cartridge very easy. (depending only on the design flow)

5. the cartridge design has minimized friction and noise due to the patented cartridge design based on the metal-rubber diaphragm-metal contact.

6. improved response to water hammer due to the shock absorption by the rubber diaphragm of the cartridge.

7. no impact of debris on the performance of the cartridge. the design of the inlet and outlet areas makes the accumulation of particles inside the cartridge very difficult.

8. valves are delivered assembled and tagged for easy identification.

ValVe dimenSionS - mm

size 15 20 25 sml 25 lge 32 40 50

h 94 94 94 126 126 126 126

l 77 77 77 123 123 123 123

w 55 55 55 80 80 80 80

kg 0.5 0.5 0.5 1.45 1.45 1.45 1.45

Dimensions shown with standard P/t points.

tradelink induStrial alpha BaSic codeS

size 15 20 25 sml 25 lge 32 40 50

code 020164 020170 020177 020185 020187 020193 020215

tradelink FreSe extended p/t point kit codeS

extension length 50mm 100mm

code 116157 116156

WL

H

DN15/PN25


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frese alPHa basic DynaMic balancing valveFor ValVeS dn15-dn25, 0.007 - 0.680 l/s

id flow l/s min dp kpa cartridge kv

cartridge/orifice type 101150 0.007 7 0.091170 0.010 7 0.141190 0.012 7 0.161210 0.015 7 0.211230 0.021 8 0.271260 0.024 9 0.281290 0.029 10 0.331300 0.032 10 0.361320 0.036 11 0.391350 0.043 11 0.461370 0.049 12 0.511400 0.057 12 0.591430 0.067 12 0.701460 0.078 12 0.811490 0.089 13 0.891510 0.097 13 0.971540 0.111 13 1.111570 0.132 14 1.271620 0.151 14 1.46

cartridge/orifice type 111725 0.171 14 1.641730 0.186 14 1.791735 0.204 14 1.971740 0.222 16 2.001745 0.242 19 2.001750 0.260 21 2.04

cartridge/orifice type 200700 0.283 22 2.170740 0.300 22 2.300770 0.332 22 2.550820 0.371 23 2.780860 0.412 23 3.090880 0.439 23 3.300920 0.493 24 3.620940 0.509 24 3.740990 0.578 25 4.161030 0.625 26 4.411060 0.644 27 4.461090 0.680 28 4.63

SpeciFication textthe valve shall operate by means of an automatic balancing cartridge with replaceable orifice plate and internal diaphragm. the pressure class of the valve shall be Pn25. the valve housing shall be made of Dr brass. the valve is frese alpha basic.

inStallationno requirements on pipe lengths before and after the valve. the valve body has flow direction indicated. a strainer is recommended according to good piping practises. standard practise for balancing valves is to install on the return side of the terminal. the pipe system should be properly ventilated to avoid the risk of air-pockets.

For ValVe dn25l-dn50, 0.188 - 3.154 l/s


cartridge/orifice type 303073 0.188 12 1.953082 0.239 12 2.493089 0.283 12 2.943094 0.315 12 3.283096 0.331 12 3.443098 0.353 13 3.533102 0.375 13 3.743107 0.413 13 4.123111 0.435 14 4.193112 0.453 14 4.363118 0.504 14 4.853124 0.556 15 5.173125 0.568 16 5.113129 0.603 16 5.433132 0.631 17 5.513135 0.661 17 5.773138 0.694 18 5.893142 0.733 18 6.223148 0.797 19 6.593156 0.886 21 6.963161 0.946 22 7.263163 0.968 22 7.43

cartridge/orifice type 404148 1.010 20 8.134152 1.072 21 8.034156 1.136 21 8.924164 1.199 21 9.424168 1.261 22 9.684173 1.325 22 10.174176 1.388 23 10.424182 1.514 24 11.124191 1.640 25 11.814194 1.767 26 12.824200 1.893 27 13.114205 2.018 28 13.734211 2.144 30 14.104217 2.271 31 14.684222 2.397 33 15.024229 2.524 34 15.584235 2.650 36 15.904241 2.775 38 16.204248 2.901 40 16.514250 3.028 42 16.824262 3.154 44 17.12

note: the minimum required differential pressure is measured using the measurement outlets on the valve housing. this applies to all cartridge types. if measured pressure differential pressure is below minimum Dp, the flow can be found by using the kv figures above.

glycol mixtures (both ethylene and propylene) up to 50% are applicable. see page 3.11.

iD = four digit number on the orifice plate.

June 20103.15

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g & flow


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frese alPHa union DynaMic balancing valveSpeciFicationbody brass (DZr) cw602no-rings ePDMseal Ptfeflow cartridge brass (DZr) cw602nspring stainless steelDiaphragm Hbnrorifice Plate brass (DZr) cw602nunion brass (DZr) cw602naccuracy +/- 5%Pressure class Pn25Max Differential Pressure 350 kPaDMedia temperature -20c to +120cbody tappings 1/4 isoflow rate range 0.007 l/s to 3.154 l/ssize range Dn15 to Dn40threads iso 228 female Parallel

deSign FeatureS1. integrated flow limiter, isolation ball valve and inlet union.2. two colour coded test points for differential pressure measurement.

red is for flow and blue is the return side of the valve.3. the unit will automatically limit the flow rate to +/- 5% of the

selected flow rate.4. the union tail piece is available in parallel threaded male, female

and copper sweat end connections for ease of installation.5. the integral ball valve has a full size external handle and an

external mechanical stop to ensure a 90 turn.6. the flow cartridge is removable from the valve for change of flow

rate or flushing without removing the valve from inline.7. only one differential pressure operating range (up to 350 kPaD)

making the sizing of the cartridge very easy. (depending only on the design flow)




11. valves are delivered assembled and tagged for easy identification.


size 15 20 25 sml 25 lge 32 40h 94 94 94 126 126 126l* 107 107 107 126 126 126l** 129 129 146 195 195 200w 87 87 87 124 124 124kg 0.87 0.87 0.87 2.54 2.54 2.54

* with no union end. ** with female union tail piece. Dimensions shown with standard P/t points.

tradelink induStrial alpha union codeS

size 15 20 25 sml 25 lge 32 40f&f 020222 020255 020258 020318 020319 020525cu&f 019449 019451 019452 019453 019454 019455m&f 019456 019457 019458 019759 019761 019765

L

W

H

tradelink FreSe alpha acceSSory kit codeS

size 15 20 25 sml 25 lge 32 40ball valve spindle extensionp/t extension kit 50mm 116157 116157 116157 116157 116757 116157p/t extension kit 100mm 116156 116156 116156 116156 116156 116156


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frese alPHa union DynaMic balancing valveFor ValVeS dn15-dn25, 0.007 - 0.680 l/s


cartridge/orifice type 101150 0.007 7 0.091170 0.010 7 0.141190 0.012 7 0.161210 0.015 7 0.211230 0.021 8 0.271260 0.024 9 0.281290 0.029 10 0.331300 0.032 10 0.361320 0.036 11 0.391350 0.043 11 0.461370 0.049 12 0.511400 0.057 12 0.591430 0.067 12 0.701460 0.078 12 0.811490 0.089 13 0.891510 0.097 13 0.971540 0.111 13 1.111570 0.132 14 1.271620 0.151 14 1.46

cartridge/orifice type 111725 0.171 14 1.641730 0.186 14 1.791735 0.204 14 1.971740 0.222 16 2.001745 0.242 19 2.001750 0.260 21 2.04

cartridge/orifice type 200700 0.283 22 2.170740 0.300 22 2.300770 0.332 22 2.550820 0.371 23 2.780860 0.412 23 3.090880 0.439 23 3.300920 0.493 24 3.620940 0.509 24 3.740990 0.578 25 4.161030 0.625 26 4.411060 0.644 27 4.461090 0.680 28 4.63

For ValVe dn25l-dn50, 0.188 - 3.154 l/s



cartridge/orifice type 404148 1.010 20 8.134152 1.072 21 8.034156 1.136 21 8.924164 1.199 21 9.424168 1.261 22 9.684173 1.325 22 10.174176 1.388 23 10.424182 1.514 24 11.124191 1.640 25 11.814194 1.767 26 12.824200 1.893 27 13.114205 2.018 28 13.734211 2.144 30 14.104217 2.271 31 14.684222 2.397 33 15.024229 2.524 34 15.584235 2.650 36 15.904241 2.775 38 16.204248 2.901 40 16.514250 3.028 42 16.824262 3.154 44 17.12

SpeciFication textthe valve shall operate by means of an automatic balancing cartridge with replaceable orifice plate and internal diaphragm. the pressure class of the valve shall be Pn25. the valve housing shall be made of Dr brass. the housing shall have one fixed threaded end and one union end. the valve includes and integral ball valve with handle. the valve is frese alpha union.


note: the minimum required differential pressure is measured using the measurement outlets on the valve housing. this applies to all cartridge types. if measured pressure differential pressure is below minimum Dp, the flow can be found by using the kv figures above.



June 20103.17

balancin

g & flow


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frese alPHa wafer DynaMic balancing valveSpeciFicationbody Ductile iron Din 1693 ggg-40o-rings ePDMflow cartridge aisi 304spring stainless steel Diaphragm reinforced ePDMorifice Plate aisi 316fasteners stainless steel aisi 306accuracy +/- 5%,

+/-10% over 400 kPaDPressure class Pn16 (Dn50/65/80 are Pn25)

(other sizes on request)Max Differential Pressure 600 kPaDMedia temperature -20c to +110cbody tappings 1/4 iso size range Dn50 to Dn800flange connections according to en/ansi standards

deSign FeatureS1. two 100mm colour coded test points for differential pressure

measurement. red is for flow and blue is the return side of the valve.

2. the unit will automatically limit the flow rate to +/- 5% of the selected flow rate, unless differential pressure across valve exceeds 400 kPaD. in differential pressure ranges up to 600 kPaD the flow rate becomes +/- 10%.

3. the flow cartridge shall offer possibility to change flow rate by means of an orifice plate.

4. only one differential pressure operating range (up to 600 kPaD) making the sizing of the cartridge very easy (depending only on the design flow).




8. valves are delivered assembled and tagged for easy identification.9. from Dn100 the valves are delivered with eye bolt.10. valve housing in naval bronze rg6, Dn100-800, Pn16 available

on request with aisi 316 cartridge and fasteners for sea water applications.

tradelink induStrial alpha WaFer codeS

size 50 65 80 100 125 150 200 250

ductile iron 020532 020546 020586 020642 020646 020648 020659 020692

naval bronze

size 300 350 400 450 500 600 800

ductile iron 020695 020696 020711 020712 020717 020721 020727

naval bronze

L

D

H

D m

Dim


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frese alPHa wafer DynaMic balancing valve

SpeciFication textthe valve shall operate by means of an automatic balancing stainless steel cartridges with replaceable orifice plates and internal ePDM diaphragms. the pressure class of the valve shall be Pn16/Pn25. the valve housing shall be made of ductile iron type ggg40. the valve shall comply with flanges according to en/ansi standards. the valve is frese alpha wafer.



size l d h kg cart / VlV max l/s rg6 kg50 170 100 218 3.41 1 11.3865 170 119 237 4.91 1 11.3880 170 131 249 4.79 1 11.38

100 170 163 281 6.90 2 22.76 7.59125 170 193 311 9.00 3 34.14 9.90150 170 216 334 11.73 4 45.52 12.90200 170 271 389 18.75 7 79.67 20.63250 170 326 440 23.44 12 136.6 25.78300 170 383 501 33.41 15 170.7 36.75350 170 443 561 44.21 19 216.2 48.63400 170 496 614 51.63 26 295.9 56.79450 170 545 663 57.47 33 375.6 63.22500 170 601 719 67.75 40 455.2 74.53600 170 715 833 88.90 56 637.3 97.79800 170 880 998 127.30 85 967.4 140.03

For ValVeS dn50-dn800, 1.061 - 12.5 l/s


cartridge/orifice type 505179 1.061 13 10.65184 1.092 13 10.95189 1.125 13 11.25194 1.167 13 11.75200 1.222 13 12.25206 1.289 14 12.45213 1.375 14 13.25220 1.475 14 14.25227 1.583 14 15.25235 1.725 14 16.65243 1.808 14 17.45251 1.967 14 18.95260 2.194 15 20.45269 2.472 16 22.35279 2.889 19 23.95287 3.154 22 24.25292 3.470 23 26.15298 3.722 24 27.45303 4.100 27 28.45308 4.444 29 29.7

For ValVeS dn50-dn800, 1.061 - 12.5 l/s



6407h 12.500 49 64.3

note: the minimum required differential pressure is measured using the measurement outlets on the valve housing. this applies to all cartridge types. in pressure ranges from 0 to 400 kPaD the flow rate is +/- 5%. in pressure ranges up to 600 kPaD the flow rate is +/- 10%. if measured pressure differential pressure is below minimum Dp, the flow can be found by using the kv figures listed.



June 20103.19

balancin

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control valves frese s dyn

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ValVe

frese s DynaMic balancing valveapplicationthe frese s is an externally adjustable, tamper resistant, automatic balancing valve. each valve can be set to deliver a range of flow rates via the handle without requiring a change of the internal cartridge. frese s is used in heating and cooling systems for the distribution of flow in various sections of the system. the dynamic balancing valve ensures easy and reliable balancing of the system, regardless of any fluctations in the differential pressure of the system. frese s limits maximum flow in the system, and ensures the most economical operation. can be used in both variable and constant flow systems.

SpeciFicationHousing DZr brassDP controller PPs 40% glassflow setting PPospring stainless steelDiaghragm Hnbro-rings ePDMPressure class Pn25Max. Differential Pressure 400 kPa (High Pressure) 250 kPa (low Pressure)temperature range -10c to + 120c

BeneFitS1. quick and easy selection as only flow data are required.2. security that the specified flow will not be exceeded.3. easy to install and adjust according to pre-defined flow.4. flexibility if the system is modified after the initial installation

without changing internal cartridge.5. Minimized commissioning time due to automatic balancing of the

system.6. High comfort for the end-users due to right balance of the

hydraulic system.7. the valves automatically find the hydraulic balance regardless of

pressure fluctations in the system.8. no main circuit or branch balancing valves needed in the system.9. systems with dynamic balancing are flexible, as they do not

require readjustment of the 'original' circuit in case the system is extended after installation.

FeatureS1. removable differential pressure cartridge solution simplifies

flushing procedure.2. no minimum straight pipe lengths required before or after the valve.3. built-in optional P/t ports, with test points, for needle system.4. easy adjustment of the flow by the lockable handle without

changing internal cartridge.5. flow rate tolerance +/-5%.6. Differential pressure operating range up to 400 kPa or 250 kPa

(Dn15-Dn25 low pressure).7. the handle is for the adjustment of flow. use a partner isolation

ball valve to shut off flow.

tradelink induStrial FreSe S codeS

size 15 20 25 32 40 50

hp 113589 113590 113591113592 113593 113594

lp

HP = High Pressure, lP = low Pressure.



code 116157 116156


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frese s DynaMic balancing valve

dimenSionS - mm

size 15 20 25 32 40 50

l 96 97 103 132 144 155

h 148 151 155 188 206 219

h1 96 98 102 115 119 126

FloW rateS - l/s

size 15 20 25 32 40 50

range l/s 0.011-0.306 HP0.007-0.223 lP0.018-0.512 HP0.011-0.351 lP

0.025-0.653 HP0.017-0.462 lP

0.060-1.328 HP 0.049-2.067 HP 0.122-2.868 HP

kvs 2.4 HP / 2.2 lP 3.6 HP / 3.3 lP 4.4 HP/ 4.1 lP 8.8 HP 13.2 HP 16.7 HP

SpeciFicationthe valve should be a automatic balancing valve with the option of setting the flow without interference of operation. the valve should include P/t plugs for the verification of differential pressure. the valve should only be adjustable by means of a lockable handle.

Function the operation of the frese s can be simplified by breaking it down into its two main components, a pre-adjustment unit and a differential pressure control unit. the frese s valves, react to pressure fluctations so that the differential pressure across the pre-adjustment unit is kept constant. in that way a max. flow limit is ensured in accordance with the design.

FloW characteriSticthe illustration shows how the flow in a frese s valve reacts in accordance to the pump pressure. for comparison we have added the typical flow characteristic for a static balancing valve. the differential pressure unit of the valve will work as soon as the differential pressure provided by the pump is sufficient. consequently, the rated flow is maintained regardless of any pressure fluctuations in the system.

frese s

frese s valve

Setting the ValVethe valve is easily set and the pre-setting is read on the scale on the handle. see flow rate graphs attached for settings.

note: the scale is for the adjustment of flow. if you want to shut off flow you should use a partner isolation ball valve.

the handle can be locked after adjustment. remove the cap marked 'frese' and tighten with 5mm hexagonal key.

June 20103.21

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frese s DynaMic balancing valveFloW VeriFicationthe flow through the valve can be identified by measuring the differential pressure (p) across the valve:- if the measured differential pressure is above the minimum

p, the flow is the one stated on the graph for the valve.- if the measured differential pressure is below the minimum

p, the flow can be found by using the formulas below.

Measurement of the differential pressure across the valve.FloW rate example FreSe S, dn15rated flow 500 l/h - 0,0139 l/s1. the rated flow is used as the point of reference for the overall

rating of dynamic systems. (see the graph)2. the pre-setting for the valve is found by means of the flow rate

graph. setting = 5.2.3. to the right in the graph you will see the minimum differential

pressure required from the pump by each valve. requires 18,3 kPa.

1 3

2

kPa

FloW calculation

q = kv p q = m3/h

p = bar

q = kv 100 p q = l/hp = kPa

q = kv p q = l/sp = kPa36


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kPap

kV (m3/h)

Pre-set

0,2 0,6 1,0 1,5 1,9 2,3 2,7 3,1 3,5 3,6

kV (m3/h)

Pre-set

kPap0,1 0,3 0,6 0,8 1,1 1,3 1,6 1,91,9 2,2 2,4

(

FloW rate graph FreSe S, dn15 high preSSure


June 20103.23

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kV ( 3 )

Pre-set

kPap0,3 0 8 1,5 2,2 2,8 3 3 3 8 4 1 4 3 4 4

kPap0,6 1,8 3,0 4,1 5,2 6,3 7,3 8,1 8,7 8,8

kV (m3/h)

Pre-set

k 3 kPap0 3 0 8 5 2 2 8 3 3 8 4 4 3




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kPapkV (m3/h)

Pre-set

0,5 2,0 4,0 5,9 7,6 9,0 10,5 11,8 12,9 13,2

kPap

(7

kV (m3/h)

Pre-set

1,1 3,6 6,2 8,6 10,6 12,4 14,0 15,4 16,2 16,7



June 20103.25

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frese s DynaMic balancing valveFloW rate graph FreSe S, dn15 loW preSSure

kV (m3/h) min. p kPa

12,8

12,2

11,6

11

10,4

9,8

9,2

8,6

8

Pre-set

Flow (l/h)

800

700

600

500

400

300

200

100

00 1 2 3 4 5 6 7 8 9 10

0,1 0,3 0,6 0,8 1,1 1,3 1,6 1,8 2,1 2,2

0,222

0,194

0,167

0,139

0,111

0,083

0,056

0,028

0

Flow (l/s)

(m3/h mi p kPa

12

12,2

1 6

1

10 4

9

9 2

8 6

8

Pre-se

Flow (l/h

8

700

6

5

4

3

2

1

4 5 6 7 9 1

0, 0 6 1 1 6 1,8 2 2,2

kV (m3/h)

15

14,5

13,5

1300

00 1 2 3 4 5 6 7 8 9 10

14

13

12,5

12

11,5

11

10,5

10

9,5

9

8,5

1200

1100

1000

900

800

700

600

500

400

300

200

100

0,2 0,5 0,9 1,4 1,8 2,2 2,5 2,9 3,2 3,3

0 222

0,194

0,167

0,1 9

0,11

0,08

0,056

0,028

0,361

0,333

0,306

0,278

0,250

0,139

0,083

0,056

0

0,222

0,194

0,167

0,111

0,028

Flow l/s

Flow (l/h)Flow (l/s) min. p kPa

FloW rate graph FreSe S, dn20 loW preSSure


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frese s DynaMic balancing valveFloW rate graph FreSe S, dn25 loW preSSure

kV (m3/h)

17

16,5

Pre-set

00 1 2 3 4 5 6 7 8 9 10

16

15,5

15

14,5

13,5

14

13

12

11

10

9

12,5

11,5

10,5

9,5

8,5

0,2 0,7 1,3 1,9 2,5 3,0 3,4 3,7 4,0 4,1

1300

1200

1100

1000

900

800

700

600

500

400

300

200

100

0,361

0,333

0,306

0,278

0,250

0,139

0,083

0,056

0

0,222

0,194

0,167

0,111

0,028

Flow (l/h)Flow (l/s) min. p kPa

0,389 1400

0,417 1500

0,444 1600

0,472 1700

June 20103.27


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Setting & FloW - l/s

pre-setting 15 hp 15 lp 20 hp 20 lp 25 hp 25 lp 32 hp 40 hp 50 hp

1 0.011 0.007 0.018 0.011 0.025 0.017 0.060 0.049 0.122

1.2 0.015 0.009 0.024 0.016 0.035 0.025 0.085 0.078 0.182

1.4 0.020 0.012 0.031 0.021 0.044 0.032 0.110 0.107 0.241

1.6 0.025 0.015 0.039 0.026 0.056 0.041 0.137 0.143 0.304

1.8 0.030 0.019 0.048 0.033 0.069 0.051 0.166 0.185 0.371

2 0.036 0.023 0.057 0.040 0.082 0.061 0.194 0.227 0.438

2.2 0.042 0.028 0.067 0.048 0.098 0.072 0.224 0.276 0.509

2.4 0.048 0.033 0.078 0.057 0.114 0.083 0.255 0.325 0.580

2.6 0.054 0.038 0.089 0.065 0.130 0.095 0.286 0.376 0.651

2.8 0.060 0.043 0.100 0.074 0.147 0.108 0.317 0.428 0.724

3 0.066 0.048 0.111 0.083 0.164 0.120 0.349 0.480 0.797

3.2 0.072 0.053 0.122 0.092 0.182 0.133 0.381 0.533 0.870

3.4 0.078 0.058 0.133 0.101 0.200 0.146 0.413 0.586 0.943

3.6 0.084 0.063 0.145 0.109 0.218 0.158 0.445 0.638 1.015

3.8 0.091 0.068 0.156 0.118 0.236 0.171 0.478 0.690 1.088

4 0.097 0.073 0.168 0.126 0.254 0.184 0.510 0.742 1.161

4.2 0.103 0.078 0.179 0.134 0.272 0.197 0.542 0.792 1.233

4.4 0.109 0.083 0.190 0.143 0.290 0.210 0.575 0.843 1.304

4.6 0.115 0.087 0.202 0.151 0.308 0.223 0.607 0.893 1.375

4.8 0.122 0.092 0.213 0.160 0.325 0.236 0.640 0.942 1.446

5 0.128 0.097 0.225 0.168 0.343 0.249 0.672 0.992 1.517

5.2 0.134 0.101 0.237 0.176 0.361 0.261 0.705 1.041 1.587

5.4 0.141 0.106 0.248 0.184 0.378 0.274 0.738 1.090 1.656

5.6 0.147 0.110 0.260 0.192 0.395 0.286 0.771 1.138 1.726

5.8 0.154 0.115 0.273 0.201 0.412 0.298 0.804 1.187 1.795

6 0.161 0.120 0.285 0.209 0.429 0.310 0.837 1.236 1.864

6.2 0.168 0.125 0.297 0.217 0.445 0.321 0.870 1.286 1.932

6.4 0.175 0.130 0.310 0.226 0.461 0.332 0.903 1.335 2.000

6.6 0.183 0.135 0.323 0.234 0.477 0.343 0.936 1.385 2.067

6.8 0.190 0.140 0.336 0.243 0.492 0.354 0.969 1.436 2.134

7 0.198 0.145 0.349 0.252 0.508 0.365 1.002 1.486 2.200

7.2 0.206 0.151 0.363 0.261 0.522 0.375 1.034 1.537 2.264

7.4 0.214 0.156 0.376 0.270 0.537 0.385 1.067 1.588 2.328

7.6 0.222 0.162 0.390 0.278 0.551 0.395 1.098 1.639 2.390

7.8 0.230 0.168 0.403 0.287 0.564 0.404 1.129 1.690 2.451

8 0.238 0.174 0.417 0.296 0.578 0.413 1.159 1.741 2.511

8.2 0.246 0.180 0.430 0.304 0.590 0.421 1.186 1.789 2.565

8.4 0.254 0.185 0.443 0.312 0.601 0.428 1.213 1.837 2.620

8.6 0.262 0.191 0.456 0.320 0.612 0.435 1.238 1.882 2.670

8.8 0.270 0.196 0.467 0.327 0.621 0.442 1.261 1.923 2.715

9 0.278 0.202 0.479 0.334 0.631 0.448 1.283 1.964 2.760

9.2 0.284 0.207 0.488 0.339 0.637 0.452 1.297 1.994 2.791

9.4 0.291 0.212 0.497 0.344 0.644 0.456 1.312 2.024 2.822

9.6 0.296 0.216 0.503 0.348 0.648 0.459 1.321 2.045 2.844

9.8 0.301 0.219 0.508 0.349 0.651 0.460 1.324 2.056 2.856

10 0.306 0.223 0.512 0.351 0.653 0.462 1.328 2.067 2.868


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frese sH+ DynaMic balancing valve

dimenSionS & WeightS (nominal)

size model codel

lengthh2

heighth1

heightend connections1 weight

(kg)shut off leakage

kpad rangef iso miso swt

15mm

sH 1 108.0 89.9 58.9

22.4 25.4 9.5

1.8.3%

of maxflow rate

23 - 30020mm 22.4 25.4 9.5

25mm n/a 33.5 9.5

25mm

sH 2 149.1 140.0 63.0

35.1 40.1 9.5

4.5.5%

of maxflow rate

19 - 30032mm 35.1 40.1 9.5

40mm 35.1 41.2 9.5

1 add end connection length to body length. Measured in mm unless noted.

tradelink induStrial FreSe Sh+ codeS

size 15 20 25 sml 25 lge 32 40

cu&cu 040274 040280 040281 040282 040283 040284

f&cu 040285 040286 040288 040289 040290

f&f 040227 040228 040230 040231 040232

m&cu 040486 040487 040488 040489 040490 040491

m&f 040268 040269 040271 040272 040273

m&m 040695 040696 040229 040699 040701 040702

SpeciFicationPresure class Pn 25 (25 bar)temperature range -20c to 110cPlastic Parts Psu, PoMDiaphragm Hbnrbody Material brass cw617nend connections bronze alloy iso or nPto-rings ePDM 281springs stainless steelbody tappings 1/4" iso

deSign FeatureSexternally adjustable to 60 different flow rate settings.Pressure/temperature ports.range of end connections available.sizes: 15,20,25,32, and 40mm.flow rate range: 0.075 - 1.949 l/s.an sH+ valve is not a shut-off valve.

acceSSorieSadjustment keyPressure/temperature test fittings 1/4 isoDrain valve

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frese sH+ DynaMic balancing valve

FloW rateS - l/s (+/- 5%)

dialsetting

flowsh1 (15-25mm)

flow sh2 (25-40mm)

0.5 0.0033 0.044

0.6 0.0153 0.095

0.7 0.0303 0.145

0.8 0.0453 0.196

0.9 0.0603 0.246

1.0 0.075 0.290

1.1 0.090 0.341

1.2 0.105 0.391

1.3 0.120 0.442

1.4 0.135 0.492

1.5 0.150 0.543

1.6 0.166 0.593

1.7 0.182 0.644

1.8 0.198 0.694

1.9 0.214 0.738

2.0 0.230 0.789

2.1 0.246 0.839

2.2 0.262 0.890

2.3 0.278 0.940

2.4 0.294 0.991

2.5 0.310 1.041

2.6 0.324 1.073

2.7 0.338 1.098

2.8 0.352 1.129

2.9 0.366 1.161

3.0 0.380 1.192

3.1 0.394 1.218

3.2 0.408 1.249

3 these flow rates are (+/- 15%)

dialsetting

flowsh1 (15-25mm)

flow sh2 (25-40mm)

3.3 0.422 1.281

3.4 0.436 1.312

3.5 0.450 1.338

3.6 0.463 1.369

3.7 0.476 1.401

3.8 0.489 1.432

3.9 0.502 1.457

4.0 0.516 1.489

4.1 0.526 1.514

4.2 0.537 1.533

4.3 0.548 1.558

4.4 0.559 1.577

4.5 0.570 1.602

4.6 0.581 1.621

4.7 0.592 1.647

4.8 0.603 1.672

4.9 0.614 1.697

5.0 0.625 1.722

5.1 0.633 1.741

5.2 0.641 1.767

5.3 0.649 1.785

5.4 0.657 1.811

5.5 0.665 1.830

5.6 0.673 1.855

5.7 0.681 1.880

5.8 0.689 1.899

5.9 0.697 1.924

6.0 0.705 1.949

Dn 15/20/25 male/male for union programme. Dn 25l/32/40 male/male for union programme.


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frese eva two-way autoMatic balancing valveapplicationfrese eva is a valve particularly designed for the balancing of cooling and heating units. with its simple on/off control the valve can be used for many different applications, and at the same time advantage is derived from the dynamic control principle. by means of frese eva the optimum flow rate is ensured in each control area. this flow rate is maintained in spite of pressure fluctuations in the system. (a control area may be two fan coil units for a hotel room or a calorifier for a sports centre).

SpeciFicationValve housingbody brass (DZr) cw602no-rings ePDMPressure class Pn25temp. range 0 to +95cambient temp. range 0 to +50cMax. Diff. Pressure 400 kPaflow range 0.007 l/s to 0.68 l/ssize range Dn15-Dn25end connections threaded femaleweight 0.7kglength of stroke 2.15mm

actuatoractuator travel 4mmactuator types 24 v, on/off, normally closed

230 v, on/off, normally closedPower consumption 1.8 wattclosing and opening time approx. 3minforce 100nmambient temperature 0 to +60c Protection iP54weight (without adaptor, inc 1m wire) 100gconnection wire 2 x 0.75mm2 Pvcunit includes a valve adaptor and 1.0m of wire.

deSign FeatureS1. two valves in one. replaces both the normal static valve(Drv)

and two way valve.3. no requirement on pipe lengths before and after the valve.2. built-in on/off function for electrically operated actuator.

(normally closed) 4. time consuming adjustment of the system is eliminated.5. the valve automatically ensures the hydraulic balance, regardless

of changing pressure conditions in the system.6. the valve can be easily fitted into the system.7. integral optional P/t ports for needle system and/or drain.8. supplied with two colour coded P/t plugs as standard.9. small compact product.

tradelink induStrial eVa codeS

size 15 20 25

24V, on/off, f&f

230V, on/off, f&f

tradelink FreSe eVa acceSSory codeS

accessory p/t extension kit 50mm p/t extension kit

100mm extension piece

for actuatorspindle

extension dn15/20spindle

extension dn25

code 116157 116156

1.

2.

3.

extension piece for actuator spindle extension

June 20103.31

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frese eva two-way autoMatic balancing valve

d

2 xP/T Plug

It isrecommendableto fit strainerand isolationball valves.

Example:Frese no.48-0012

-- -

electric diagram - exampleyou may let the valve signal run the fan engine of the unit, so that the fan engine is not running when the valve is closed.

application examplethe system is easily balanced by adjusting the pump in accordance with the required minimum pump head across the critical valve. when this pump head is available the system will be automatically balanced.

Min. required pump head is the lowest differential pressure at which the cartridge can operate plus the pressure drop of the eva valve at design flow.

see cartridge data on page 3.32.

optional trafoto 24V

L1

N

T

Relay

Actuator forFrese EVA

dimenSionS - mm

size 15 20 25

l 102 110 119

height inc. actuator 135 135 135


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frese eva two-way autoMatic balancing valveSpeciFicationhousingthe valve housing shall be made of hot stamped brass in Dr quality. the valve shall regulate flow by means of a replaceable cartridge. Pressure rating of the valve housing shall be Pn25. the kv value of the valve housing inclusive of the on/off control unit shall be no less than 3.0.

control unitthe valve shall be nc (normally closed). the valve shall be able to close completely against a DP of 4 bar.

Flow regulatorthe flow regulating cartridge shall be made of brass in Dr quality. the cartridge shall offer the opportunity to change the flow by replacing an orifice plate without changing the entire cartridge. the cartridge shall operate to one maximum pressure range only throughout the entire hydraulic system.

inStallation no requirements on pipe lengths before and after the valve. the valve body has flow direction indicated. a strainer is recommended according to good piping practises. standard practise for balancing valves is to install on the return side of the terminal. the pipe system should be properly ventilated to avoid the risk of air-pockets.


for the pressure drop across the entire eva valve add the pressure drop across the valve housing (kv = 1.9) to the min. required differential pressure of the cartridge selected above.


For ValVeS dn15-25, 0.007 - 0.680 l/s

id flow l/smin

dp kpa cartridge

min dp kpa

housing

min dp total

kpa

cartridge/orifice type 101150 0.007 7 0 71170 0.010 7 0 71190 0.012 7 0 71210 0.015 7 0 71230 0.021 8 0 81260 0.024 9 0 91290 0.029 10 0 101300 0.032 10 0 101320 0.036 11 0 111350 0.043 11 0 111370 0.049 12 0 121400 0.057 12 0 121430 0.067 12 1 131460 0.078 12 1 131490 0.089 13 1 141510 0.097 13 1 141540 0.111 13 2 151570 0.132 14 3 171620 0.151 14 3 17

cartridge/orifice type 111725 0.171 14 4 181730 0.186 14 5 191735 0.204 14 6 201740 0.222 16 7 231745 0.242 19 8 271750 0.260 21 10 31

cartridge/orifice type 200700 0.283 22 12 340740 0.300 22 13 350770 0.332 22 16 380820 0.371 23 20 430860 0.412 23 24 470880 0.439 23 28 510920 0.493 24 35 590940 0.509 24 37 610990 0.578 25 48 731030 0.625 26 56 821060 0.644 27 60 871090 0.680 28 67 95

June 20103.33

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frese oPtiMa Pressure inDePenDent control & balancing valve

a frese strainer ball valve in the supply line combined with a frese optima (two way automatic balancing valve) in the return line of a cooling/heating unit.

applicationfrese oPtiMa pressure independent control valve (Picv) is used in heating and cooling systems in applications with fan coil units, air Handling units or other terminal unit applications.

frese oPtiMa provides modulating control with full authority regardless of any fluctuations in the differential pressure of the system.

frese oPtiMa combines an externally adjustable automatic balancing valve, a differential pressure control valve and a full authority modulating control valve.

frese oPtiMa makes it simple to achieve 100% control of the water flow in the building, while creating high comfort and energy savings at the same time. an additional benefit is that no balancing is required if further stages are added to the system, or if the dimensioned capacity is changed.

deSign FeatureS1. less time to define the necessary equipment for a hydraulic

balanced system (only flow data are required).2. no need to calculate valve authority. the constant differential

pressure across the modulating control component guarantees 100% authority.

3. flexibility if the system is modified after the initial installation.4. no further regulating valves required in the distribution pipework

when frese oPtiMa is installed at terminals.5. total number of valves minimized due to the 3-in-1 design.6. Minimized commissioning time due to automatic balancing of the

system.7. removable cartridge solution simplifies flushing procedure.8. no minimum straight pipe lengths required before or after the

valve.9. High comfort for the end-users due to high precision temperature

control.10. longer life due to less movements of the actuator.11. less energy consumption due to faster response and increased

system stability.12. the presetting function has no impact on the stroke; full stroke

modulation at all times, regardless the preset flow.13. automatic balancing eliminates overflows, regardless of

fluctuating pressure conditions in the system.14. electrical actuator 0-10 v and 3 point control, normally closed.15. Differential pressure operating range up to 400 kPa.16. High flows with minimal required differential pressure due to

advanced design of the valve.17. More accurate control due to long 5mm stroke.18. Higher presetting precision due to stepless analogue scale.


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frese oPtiMa Pressure inDePenDent control & balancing valveSpeciFicationValvevalve Housing and flow setting DZr brass, cw602nDp controller PPs 40% glassspring stainless steelDiaphragm Hnbro-rings ePDMPressure class Pn25Max. Diff. Pressure 400 kPaMedium temp. range 0c to 120c

the pipe system shall be properly ventilated to avoid risk of air pockets. glycolic mixtures up to 50% are applicable (both ethylene and propylene). Frese a/S can accept no responsibility if another actuator is used instead of the Frese actuator

H1

H

L L

HH1

dimenSionS - mm

size 15 20 25 32 40 50

l 88 88 92 128 144 155

h 65 65 66 72 87 93

h1 145 145 145 152 219 225

kg 0.90 0.91 1.00 1.52 2.55 3.20

FloW rate range - l/s

size 15 20 25 32 40 50

low flow 0.022 - 0.174 0.036 - 0.292 0.064 - 0.4780.129 - 0.849 0.562 - 1.974 0.612 - 2.385

high flow 0.068 - 0.479 0.081 - 0.566 0.081 - 0.566

example: for high flow Dn15, the maximum flow can be set between 0.068 and 0.417 l/s, according to design specifications.

minimum diFFerential preSSure range - kpa

size 15 20 25 32 40 50

low flow 14.5 - 16 14.5 - 16 14 - 1614.5 - 18 16 - 26 19 - 32

high flow 14 - 18 14 - 22 14 - 22

Minimum differential pressure depends on flow rate setting, refer to flow rate charts.

FloW coeFFicientS - m3/h

size 15 20 25 32 40 50

kvs lf 1.6 2.6 4.37.2 13.9 15.2

kvs hf 4.1 4.3 4.3

tradelink induStrial optima codeS

size 15 20 25 32 40 50

24V /0..10V lf 113608 113609 113610113614 115945 115946

hf 113611 113612 113613

24V /3 pos. lf

hf

230V /3 pos. lf 116158 113616 113617116161 116162 116163

hf 116159 113615 116160



code 116157 116156

Dn40 - Dn50Dn15 - Dn32

June 20103.35

technical dataactuator dn15-dn32characteristics electrical, modulating, normally closedProtection class iP 40 to en 60529frequency 50/60 Hzcontrol signal 0-10v Dc, or 3 positionactuating force 250 nstroke 5.5 mmambient operating conditions +1c to 50c storage -5c to 50c Humidity 5 to 85% r.f.Manual operation 3mm hexagonal keycable length 1,5mweight 350ginput impedance >100k ohm (Dc 0...10v)

actuator dn40-dn50wcharacteristics electrical, modulating, normally closedProtection class iP 54 to en 60529frequency 50 Hzcontrol signal 0-10v Dc, or 3 positionactuating force 400 nstroke 6.5mmambient operating conditions -5c to 50c storage -5c to 50c Humidity 5 to 95% r.f.Manual operation Manual adjusting handlecable not includedweight 600ginput impedance >100k ohm (Dc 0...10v)

manual operationManual operation should be performed after disconnecting from the power supply. if the operation is performed manually without disconnecting from the power, the supply must be disconnected and then reconnected, whereby the actuator will start the calibration process and correctly adjust itself. Do not forget that a manually operated valve must go through the calibration process before commencing normal operation again.

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typeS & operation data

ValVe dim function running time(50 hz) supply Voltagepower

consumption

parallel operation

no. of actuator

dn15-dn32 Dc 0..10 v 75s ac/Dc 24 v +/- 25% 2,5 va Max. 10

dn15-dn32 3 - position 150s/5.5mm ac 24 v +/- 20% 0,8 va Max. 24

dn15-dn32 3 - position 150s/5.5mm ac 230 v +/- 15% 6 va Max. 6

dn40-dn50 Dc 0..10 v 43s/6,5mm ac 24 v +/- 20% 4,5 va Max. 10

dn40-dn50 3 - position 43s/6,5mm ac 24 v +/- 20% 2,0 va

dn40-dn50 3 - position 170s/6,5mm ac 230 v +/- 15% 2,5 va


1

2

4 45

Actuator

Modulating control component

P/T plugs

Pressure control cartridge

5

2

41

3Pre-setting scale

F

3

deSignthe design of frese oPtiMa combines high performance with small size and compact construction.

the main components of the valve are:1. the pressure control cartridge2. the modulating control component3. the presetting scale (not accessible when the actuator is

mounted)4. the P/t plugs (optional)5. the electrical actuator

commiSSioningthe frese optima is delivered to australian customers with a commissioning cap and the pressure control cartridge installed. the commissioning cap keeps the modulating component in a fully open position to aid the flushing process. for automatic balancing valves a backflush is recommended as a forward flush with the pressure control cartridge installed will begin to operate and limit the flow to the valves maximum flowrate. during flushing the valve must be in the fully open position.

tags, labels, and a presetting list can be supplied with each valve upon request. at this point the user can then adjust the presetting dial to the design flow. once the flow is set, the actuator can be mounted (this also prevents tampering of the presetting) and the valve is ready to operate.

Pre-settings can be checked simply via flow vs. presetting graphs page 3.38 to 3.42.

SpeciFication textthe actuated valve shall operate by means of an automatic balancing cartridge that can be removed without dismantling the valve. the presetting of the valve shall not influence the length of the stroke. the pressure class shall be Pn25. the differential pressure operating range shall be up to 400kPa. the valve shall operate by means of an electrical modulating actuator.

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June 20103.37

operation principlethe innovative design of frese oPtiMa introduces a modulating control component that retains 100% authority at all times.

with the frese oPtiMa, there are two independent movements for the presetting and the modulating function. During presetting, the inlet area moves radially without interfering with the length of the stroke. During modulating, the inlet area moves axial taking advantage of the full stroke. in the example, the flow is modulated throughout the full range from 10 to 0v regardless of the preset flow (i.e. 625 l/h or 300 l/h).

whilst the control component provides proportional modulation irrespective of the preset flow, the automatic balancing cartridge guarantees that the flow will never exceed the maximum preset flow. regardless of pressure fluctuation in the system, the maximum flow is kept constant up to a maximum differential pressure of 400kPa.

Flow (l/h)

(kPa)

Flow rate vs. differential pressure(Preset flow: 625 l/h, 300 l/h)

Voltage (V ) Pre-setting

Flow l/h

Flow rate vs. Voltage(Preset flow: 625 l/h, 300 l/h)

(kPa)

Flow (l/h)

10V

6V

3V

Flow rate vs. differential pressure(voltage: 10v, 6v, 3v)

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Pre-set0 0.5 1 1.5 2 2.5 3 3.5 4

16.0

Kv (m3/h)0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6

min. p kPa700

600

500

400

300

200

100

0

Flow l/hFlow l/s

15.7

15.1

14.5

0.194

0.167

0.139

0.111

0.083

0.056

0.028

0

K (m ) i l ll l

Pre-set0 0.5 1 1.5 2 2.5 3 3.5 4

18.0

Kv (m3/h)0.7 1.3 2.0 2.5 3.1 3.5 3.8 4.1

min. p kPa1800

Flow l/hFlow l/s

17.0

15.8

14.0

1600

1400

1200

1000

800

600

400

200

0

0.500

0.444

0.389

0.333

0.278

0.222

0.167

0.111

0.056

0

FreSe optima dn15, loW FloW

FreSe optima dn15, high FloW

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June 20103.39

Pre-set0 0.5 1 1.5 2 2.5 3 3.5 4

16.0

Kv (m3/h)0.3 0.7 1.0 1.4 1.7 2.0 2.3 2.6

min. p kPa1100

Flow l/hFlow l/s

15.7

15.1

14.5

1000

900

800

700

600

500

400

300

200

100

0

0.306

0.278

0.250

0.222

0.194

0.167

0.139

0.111

0.083

0.056

0.028

0

P0 5 1 1 5 2 2 5 3 3 5

(m h)0 3 7 1 1 1 7 2 0 2 3 2 6

p kPF ll l

15

15 1

1 5

900

800

700

600

500

00

300

200

100

0

0 25

0 222

0 19

0 16

0 13

0 111

0 083

180154666 balancing flow control valves pdf

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