LG/LA/LZ-Series Control Valves Globe, Angle & Z-Body Valves , g y

Cryogenic Service Application Control Valves

2

Introduction / Features The BFS LG/LA/LZ-series is a globe type single seat, top entry control valve with a fabricated extension for cold box

cryogenic service applications to -218℃ (-425). SG-series bodies are constructed of bronze or austenitic stainless steel

for high impact strength at low temperature and minimum heat transfer. SGCR-series is designed for high flow capacity

with a minimum of mass to reduce boil-off on valve cool-down.

The LG/LA/LZ-series extension design permits easy access and removal of the valve trim without breaking down the cold

box. During operation, a small amount of liquified gas passes in to the extension bonnet area area where it vaporizes and

insulates the packing from the liquified gas temperature. The pressure resulting from the vaporization of the liquid

prevents additional liquid from passing into the bonnet area

The SGCR-series is equipped with a standard, high performance multi-spring-diaphragm actuator or cylinder actuator,

providing high thrust for tight shut-off and exceptionally accurate control

.

Contents

Introduction & Model Numbering System ------------------------------------------------------------------------------------ 2

Valve Specification, Characteristic ---------------------------------------------------------------------------------------------- 3

Feature of LG/LA/LZ-series ----------------------------------------------------------------------------------------------------- 4

SF-series, Cryogenic, Micro Flow Control Valves, Jacket Body ---------------------------------------------------------------- 5

Velocity Control Trim,(MH1S,MH2S,MHMH,X[iks]-trim) ----------------------------------------------------------------------- 6

Packing System, Type of Bonnet ----------------------------------------------------------------------------------------------- 7

Valve assembly construction & Material Applications ------------------------------------------------------------------------ 8

Cv Chart ------------------------------------------------------------------------------------------------------------------------ 10

SG Body Dimensions ----------------------------------------------------------------------------------------------------------- 13

Spring Diaphragm Actuator & Cylinder Actuator Dimensions---------------------------------------------------------------- 14

Conversion Unit ---------------------------------------------------------------------------------------------------------------- 15

Model Numbering System

1 2 3 4 5

Body series

LG / Cryogenic Globe

LA / Cryogenic Angle

LZ / Cryogenic Z-body

6

Actuator Type

DR-Diaphragm/Rever.

DD-Diaphragm/Direct

CS-Spring Cylinder

CD-Double Cylinder

HS-Hydraulic Cylinder

EM-Electric Motor

Cryogenic Bonnet

SE / Std. Extension

TE / Top Entry Exten.

BE / Body Extended

Trim Form

G1-Unbalanced

G2-Balanced

G3-Aux. Pilot Plug

Trim Type

S1-Contoured

C1-Conventional Cage

M1-Multi-hole 1-stage

M2-Multi-hole 2-stage

M3-Multi-hole 3-stage

MS-Multi-step

XT-X[iks]-trim

Body Rating (ANSI / KS)

01-150 / 10K

02-300 / 20K

03-600 / 40K

04-900 / 62K

05-1500

XX-Option

3

1. Valve Specification - Body Style

; LG / Globe Body

; LA / Angle Body

; LZ / Z-Body

- Body Size

; 1/2" to 16" / Over 16"(option)

- Pressure Rating

; ANSI 150, 300, 600, 900, 1500.

; KS(JIS) 10K, 20K,40K, 62K

; DIN, API, Others (Option)

- End Connections

; FF, RF, RTJ, BW, SW, SCRD, Clamp, Etc..

- Bonnet

; Top Entry Extended Bonnet

; Standard Extended Bonnet

- Flow Direction

; Flow to open / Compressible

; Flow to Close / Un-compressible.

- Trim Design

; Unbalanced / 1/2" to 10"

; Balanced / 2" to 16" (Over 16"-Option)

- Trim Form

; Unbalanced Contoured Plug

; Balanced Conventional Cage

; Drilled Multi-Hole Velocity Control Cage

- Rangeability

; 30:1, 50:1, 100:1.

- Seat Leakage

; Standard / FCI 70-2. Class IV

; Option / FCI 70-2. Class V. VI.

- Materials of Body & Bonnet

; LT-Carbon Steel,

; A351-CF8,8M, CF3,3M, /304, 304L. 316, 316L, 321.

; Monel, Aluminium, Bronze.

- Materials of Trim

; Stainless Steel or body materials.

- Soft Seat

; TFE Teflon

; FEP Teflon

; PCTFE (Kel F)

- Trim Characteristic

; Equal-Percentage

; Linear

; Quick Opening

Actuators

; Spring Diaphragm

; Double Cylinder, Spring Cylinder / Others(Option)

2. Features - Streamlined, lightweight body for reduced heat transfer.

- Simple Standard bonnet seal for easy maintenance and

low thermal losses.

- Top entry for easy service without breaking down cold

box.

- Cold-box extension for packing protection and to

prevent icing of the stem

- Single-seat for precise throttling and tight shut-off.

- Smooth, nearly constant area; internal flow passages for

high capacity and minimum turbulence.

- Many interchangeable parts with other standard BFS

control products

3. Inherent Flow Characteristics Equal Percentage

Equal percentage is the characteristic, most commonly

used in process control. The change in flow per unit of

valve stroke is directly proportional to the flow occurring

just before the change is made. While the flow

characteristic of the valve may be equal percentage, most

control loops produce an installed characteristic, which

approaches linear when the overall system pressure drop

is large relative to that across the valve.

Linear

Linear inherent characteristic produces equal changes in

flow per unit of valve stroke regardless of plug position.

Linear plugs are used on those systems where the valve

pressure drop is a major portion of the total system

pressure drop.

Quick Open

Quick-open plugs are used for on-off service and are

primarily designed to produce maximum flow quickly.

Modified-%

flow characteristic that lies somewhere between linear and

equal percent. It provides fine throttling at low flow

capacity and an approximately linear characteristic at

higher flow capacity.

4

4. Feature of LG/LA/LZ-Series

4-1. LG/LA-Series

Standard Extension Bonnet Globe & Angle Body

Reliability and ease of maintenance are essential features

of any good control valve and to this end the BFS range

of cryogenic valves have been kept as simple as possible.

The number of components has been kept to a minimum

and ease of access to the trim is straight forward through

the removal of the bonnet retaining nuts and lifting of the

complete bonnet and plug assembly.

Bodies are normally supplied in stainless steel or bronze

with a stainless steel extension of a suitable length for the

installation position and temperature as low as -218℃

(-425). The extension can be fitted with a cold-box

flange of any shape / size required.

Trim construction is based on the traditional BFS top

guided welded seat or screwed in renewable seat design

and incorporates a soft seal in TFE or FEP when bubble

tight shut-off is required. Other types of trim such as

balanced cage are available when required. End

connections can be flanged, screwed, socket or butt weld

ends plus pipe stubs as necessary. All body components

are cleaned and degreased suitable for oxygen service

and the end connections suitably masked after testing to

prevent ingress of foreign matter / moisture.

.

LG-Series / Cryogenic Service Globe Valve

4-2. LZ-Series LZBE-Series

Aluminium Bodied Extension Bonnet Z-Body

LZ-Series / Cryogenic Service Aluminium Body

For cryogenic cold-box installation with aluminium pipe

lines this valve can be welded in and overcome the need

for transition pipe pieces or flanged connections.

Both socket and butt weld connections are available

together with extended pipe stubs if required.

Apart from the body material the design and other

components are basically identical to the standard BFS

cryogenic bolted bonnet design.

The number ofcomponents has been kept to a minimum

and ease of access to the trim is stright forward through

the removal of the bonnet and plug assembly. The bonnet

extension is manufactured from stainless steel to a

suitable length to suit the installation position and

temperature as low as -218℃ (-425). A cold box flange

of any shape size can be fitted as required.

Trim construction is based on the traditional BFS top

guided screwed in renewable single seat design and

incorporates a soft seal in TFE-teflon or FEP-teflon when

bubble tight shut-off is required. Other types of trim such

as balanced cage are available when required. All body

components are cleaned and degreased suitable for

oxigen service and the end connections suitably masked

after testing to prevent the ingress of foreign matter

moisture.

5

4-3. LZ-Series

Extension Body

Further development of aluminium bodied cold box valves

has brought about a design that can provide far easier

access from outside a box wall. This is particulary useful

when modern insulation material such as perlite is used.

The bonnet flange is located at a suitable distance inside

the box which permits access via secondary insulation that

is retained within a fibre glass 'sock'. Apart from the

obvious benefits connected with installation cost savings

the other major impact is the savings the other major

impact is the saving on shipping volume when actuators

/extensions are removed for transporting a cold box from

a fabricator to the site location.

Materials of construction are in keeping with other similar

BFS designs with the stainless steel bonnet extension

being manufactured to a suitable length to suit an

inclined installation and process temperatures as low as

-218℃ (-425). A sliding weatherproof or welded cold-

box flange of any size or shape can be fitted as required.

The types and capacities of trim available are the same as

that offered with all other BFS valves and incorpates a

renewable seat as standard. For heat exchanger bypass

applications this design is also provided in a 3-way body

configuration.

LZ-Series / Cryogenic Service Extension Body

4-4. LGTE/LATE-Series

Top Entry Extension Bonnet Body

LG-Series / Cryogenic Service Top Entry Extension Bonnet Body

This type of valve was introduced primarly to satisfy the

requirements of cryogenic hydrocarbon plant and

provides an all welded in construction thus preventing any

possibility of process leakage within the cold box whilst

giving full access to the valve trim for maintenance from

outside the cold box.

Body connections are normally machined to suit socket or

butt weld ends.

The specially designed cast body incorporates an

extension bonnet of any desired length to suit the

installation position and temperatures as low as -218℃

(-425). Where temperatures below -200℃ (-300) are

involved, consideration should be given to using a

vacuum jacket to minimise cold loss. Special consideration

has been given to minimise cold transfer convection by

the fitting of deflectors on the plug stem and the

positioning of the bonnet flange relative to the cold-box

fabrication. The extended bonnet is sized to facilitate the

removal of the valve trim without the expense and

laborious exercise of stripping out insulation The types

and capacities of trim available are the same as that

offered with a standard cryogenic valve and incorporate a

renewable seat as standard.

6

5. Trim Construction 5-1. Standard Unbalanced

Standard Unbalanced BFS trim consists of a top guided

plug with a valve use an integral seat machined in to the

body or cage guided quick change trim application seat.

Flow capacity can typically be adjusted by changing the

shape of the plug head. Valves with small capacities or

renewable seats use screwed seat-rings.

The metal-to-metal seat provides longer-lasting, reliable,

tight shutoff at both ambient and cryogenic temperatures

without the need for periodic lapping. This eliminates the

need for soft seats, even in applications with the most

stringent shutoff requirements.

Single Port Unbalanced Plug Design

5-2. Soft Plugs for Unbalanced.

Bubble tight shut-off is achieved by inserting Teflon or

Kel-F onto the seating surface of the plug. Plug sizes up

to 1-1/2" use a threaded plug head design that clamps

the elastomeric insert between the plug head and the

plug stem. Leakage corresponding to this construction is

Class VI or ANSI B16. 104 (FCI 70-2), bubble tight. Soft

plug assemblies and standard plugs are interchangeable.

Soft Seat Application Plug Design

5-3. Velocity Control Cage

In order to overcome the damage caused by mild

cavitation a multi hole cage is installed in the manner

shown so that the flow passes from the outside through

the arranged pattern of characterised holes. This allows

the resulting jets to oppose themselves in the centre of

the cage and dissipate energy away from the trim itself.

Drilled Multi-Hole Velocity Control Cage

5-4. Pilot Balanced Cage

The high-capacity design CG and HG-Series valves with

pilot-balanced trim allow the use of smaller, lower cost

actuators, reducing installed costs in high pressure and

high-flow-rate applications.

Balanced valve plug construction in the design CG and HG

valves permits use of smaller, lower-cost actuators from

BFS.

6. Packing, Guiding, Gaskets & Others.

6-1. Gland Packing

Valve packing is readily accessible from outside the cold

box, and the bonnet flange bolting is located such that it

is accessible at or near the surface of the cold box.

Standard packing is Teflon V-rings. Glass-filled Teflon and

square Molded Graphite packing are optional.

7

Materials Temperature Centigrade

PTFE -240℃ to +232℃

PTFE filled non asbestos -212℃ to +272℃

Graphite -240℃ to +815℃

- Pugitive Emission Protection : The optional Live-

Loading Packing systems provide a superior stem seal to

prevent the loss of valuable or harzardous process fluids,

and keep emissions below the EPA limit of 500ppm.

Additionally, these Live-Loaded packing systems provide

longer life and reliability at low temperatures to reduce

maintenance costs and downtime.

Live Loading Packing System

6-2. Gaskets

The bonnet bottom is metal-to-metal in the body and

fully retains the bonnet gasket. Bonnet gasket

compression is determined by the depth of the gasket

step on the bonnet which is machined to provide the

compression required by the gasket. FEP and TFET Teflon

or Kel-F flat gaskets are used.

Type Material Temp. Centigrade

Flat PTFE -268℃ to +232℃

Flat Non Asbestos fiber -240℃ to +400℃

Flat Graphite -240℃ to +500℃

Flat Soft metal -200℃ to +425℃

Spiral Wound St. St. graphite -240℃ to +500℃

Spiral Wound St. St. PTFE -240℃ to +250℃

Metal 'O' ring St.St. silver coat. -200℃ to +800℃

6-3. Guiding

The two guides used in the packing box are easily

removed. The top guide also serves as the packing

follower. Both guides are spaced widly apart, improving

guiding. Glass-filled Teflon lined stainless steel or bronze

guides completely eliminate guide / stem galling. Solid

bronze or Stellite guides are available.

Materials Temperature Centigrade

Glass loaded PTFE -268℃ to +150℃

Bronze -268℃ to +260℃

Stellite -268℃ to +815℃

- Extended Guiding : Working on large stem diameters,

three widely spaced guides are used. The first is located in

the bottom flange, the second in the bottom of the

packing box and the packing follower, through its fine

machining tolerances, doubles up as a third guide.

- Extended Body Guiding : The principal of adequate

plug support ia also used in this design by retaining a

guide in the bottom of the body spacer. This also ensures

that during disassembly for fabrication/shipping the

complete internals are withdrawn as one. Upper guiding is

provided in the conventional way as described above.

- Top Entry Bonnet Guiding : In this design substantial

guiding occurs on the plug head and then in the packing

box itself with two widely spaced guides followed by the

packing follower which doubles up as a fourth area of

stem support.

6-4. Thoroughly Tested

Extensive cryogenic testing during the development of the

valve design eliminates the need for expensive cold

testing for most applications, which results in quicker

delivery and greater value.

6-5. Easy Maintenance

Quick change trim, with a clamped -in seat-ring, reduces

the disassembly / assembly time. The valve body can stay

in the pipeline during removal of trim parts for inspection

or maintenance.

6-6. Sour Gas Service Capability

For NACE applications, consult your BFS representative

sales office.

6-7. Seat Leakage / Soft Seated

All BFS valves are seat leak tested to the desired standard

after complete assembly. In general, all metal seated

valves achieve a substantially lower rate of leak than that

stipulated ANSI/FCI 70-2.

In case of soft seated trim a 'bubble' tight seal to Class VI

is achieved and in tests has been repeated after as many

as 250,000 continuous cycles.

When Leakage across the seat needs to be reduced to a

minimum or be bubble tight then a soft seat insert is

incorporated in to the plug. The main advantage of the

system of soft seat is that the seal itself is well out of the

main flow path when the valve is in the open position and

therefore much less prone to damage than if fitted in the

seating area. The normal materials for the seal are PTFE or

PTCFE and with this construction 'bubble tight' shut of is

achieved in accordance with class VI seat leakage.

8

7. Body Assembly Construction 7-1. LG/LA/LZ-Series

LZ-Series / Cryogenic Service Aluminium Body LG-Series / Cryogenic Service Globe Valve

SG-Series / Single Seat Unbalanced Quick Change Trim Globe Body.

Aux. Pilot Plug Application Trim

LA-Series / Cryogenic Service Angle Valve `

9

7-2. Body Material Application

Fluid Temperature ℃ -196 -100 -46 -29 150 230 300 350 425 500 535 565

No Part Name Standard Material

1 Body Stainless Steel,

Aluminum, Brass

2 Bonnet Stainless Steel,

Aluminum, Brass

3 Body Stud ASTM A193 Gr. B8 Class II

4 Body Nut 304 SS

5 Plug 316 SS (CF8M), or 316 SS + Stellite 316 SS(CF8M)+Stellite Guide

316 SS (CF8M) or 316 SS (CF8M)+Stellite Hard Facing

10 Seat Ring 316 SS or 316 SS + Stellite Hard Facing

316 SS + RTFE

9 Cage 316 SS Cr. Plating

11 Plug Stem 316 SS

17-4PH

17 Bottom Ring 316 SS

10 Balance Seal Ring

Graph. Filled Teflon+ Elgiloy Spring

Ni-Resist

RTF-LTA Seal

6 Soft Seat 316 SS + Rainforced teflon

12 Gasket 316 SS + Teflon Spiral Wound

316 SS + Graphite Filler Spiral Wound

8 Pilot Plug Spring Inconel 750

14 Pacing Stud Bolt 304 SS

15 Packing Stud Nut 304 SS

16 Packing Follower 304 SS

18 Packing Flange 304 SS or A351-CF8

General Description

The BFS Cryogenic valve meets the requirements of cryogenic processes requiring thermal insulation. An insulating

interface sets up between the valve body (cold zone) and the bonnet extension end located in the higher temperature

area (warm zone).

The valve body assembly and its thermal extension are positioned inside a "cold box"

The BFS Cryogenic servic application control valve model is similar to the SG-series, CG-series standard model, expect that

an extension bonnet, and a plug stem with enlarged length replace the standard bonnet and the standard plug stem.

All information regarding disassembly, main seat grinding, reassembly and adjustment described in instruction are

applicable, expect that the "cold box" must be opened prior to perform maintenance of the valve body subassembly.

Piping end Connection

The body of the BFS's cryogenic control valve must be flanged or butt welded on the line. The maximum allowable

pressure is stamped on the serial plate fixed on the yoke of actuator

Service Condition Limitation

Flow temperature: -200℃ to ambient temperature.

10

8. Cv Characteristic Chart 8-1. Contoured Unbalanced Plug Cv Chart Linear Characteristic

Percent of Plug of Travel (%) 10 20 30 40 50 60 70 80 90 100

Size Seat Travel Rated Cv

FL 0.93 0.93 0.92 0.92 0.91 0.91 0.91 0.90 0.90 0.90

3/4"

1"

0.156 10 0.026 0.045 0.065 0.084 0.103 0.123 0.142 0.161 0.181 0.2

0.250 20 0.104 0.181 0.259 0.336 0.413 0.491 0.568 0.645 0.723 0.8

0.375 20 0.455 0.793 1.132 1.470 1.808 2.147 2.485 2.823 3.162 3.5

0.500 20 0.650 1.133 1.617 2.100 2.583 3.067 3.550 4.033 4.517 5

0.750 20 1.170 2.040 2.910 3.780 4.650 5.520 6.390 7.260 8.130 9

1"(25A) 1.000" 20 2.080 3.627 5.173 6.720 8.267 9.813 11.36 12.167 14.453 16

1.5"(40A) 1.000" 20/30 3.23 5.667 8.083 10.50 12.917 15.333 17.750 20.167 22.583 25

1.580" 20/30 4.55 7.933 11.317 14.70 18.083 21.467 24.85 28.223 31.617 35

2."(50A) 1.580" 30 4.94 8.61 12.29 15.96 19.63 23.31 26.98 30.65 34.33 38

2.000" 30 6.11 10.65 15.20 19.74 24.48 28.83 33.37 37.91 42.46 47

2.5"(65A) 2.000" 30/40 6.5 11.33 16.17 21 25.83 30.67 35.5 40.33 45.17 50

2.500" 30/40 9.49 16.55 23.60 30.66 37.72 44.77 51.83 58.89 65.94 73

3"(80A) 2.000" 30/40 7.15 12.47 17.78 23.1 28.42 33.73 38.05 44.37 49.68 55

3.000" 30/40 13.65 23.8 33.95 44.1 54.25 64.4 74.55 84.7 94.85 105

4"(100A) 3.150" 40/50 14.3 24.93 35.57 46.20 56.83 67.47 78.10 88.73 99.37 110

4.000" 40/50 24.7 43.07 61.43 79.80 98.17 116.53 134.9 153.27 171.63 190

6"(150A) 4.000" 40/50 26 45.33 64.67 84 103.33 122.67 142 161.33 180.67 200

6.000" 50/70 40 98.67 129.33 168 206.67 245.33 284 322.67 361.33 400

1. Under 3/4" and over 6" Cv Characteristic : Please contact to sales lap of BFS.

2. Micro Flow Cv Characteristic : Please contact to sales lap of BFS.

8-2. Contoured Unbalanced Plug Cv Chart Equal-Percentage Characteristic

Percent of Plug of Travel (%) 10 20 30 40 50 60 70 80 90 100

Size Seat Travel Rated Cv

FL 0.93 0.93 0.92 0.92 0.91 0.91 0.91 0.90 0.90 0.90

3/4"

1"

0.250" 20 0.015 0.2 0.028 0.039 0.055 0.077 0.108 0.152 0.214 0.3

0.250" 20 0.038 0.053 0.074 0.104 0.146 0.205 0.288 0.405 0.569 0.8

0.375" 20 0.164 0.23 0.324 0.455 0.639 0.898 1.262 1.773 2.491 3.5

0.500 20 0.234 0.329 0.462 0.65 0.913 1.283 1.802 2.533 3.558 5

0.750 20 0.422 0.592 0.832 1.169 1.643 2.309 3.244 4.559 6.405 9

1"(25A) 1.000" 20 0.749 1.503 1.48 2.079 2.921 4.105 5.767 8.104 11.387 16

1.5"(40A) 1.000" 20/30 1.171 1.645 2.312 3.248 4.564 6.413 9.012 12.662 17.792 25

1.580" 20/30 1.64 2.3 3.24 4.55 6.39 8.98 12.62 17.75 24.91 35

2."(50A) 1.580" 30 1.78 2.5 3.51 4.94 6.94 9.75 13.7 19.25 27.4 38

2.000" 30 2.2 3.09 4.35 6.11 8.58 12.06 16.94 23.81 33.45 47

2.5"(65A) 2.000" 30/40 2.34 3.29 4.62 6.5 9.13 12.83 18.02 25.32 35.58 50

2.500" 30/40 3.28 4.61 6.47 9.09 12.78 17.96 25.23 35.45 49.82 70

3"(80A) 2.000" 30/40 3.33 4.67 8.56 9.23 12.96 18.21 25.95 35.96 50.53 71

3.000" 30/40 4.92 6.91 9.71 13.64 19.17 26.94 37.85 53.18 74.73 105

4"(100A) 3.150" 40/50 5.15 7.24 10.17 14.29 20.08 28.22 39.65 55.71 78.28 110

4.000" 40/50 8.9 12.5 17.57 24.69 34.69 48.74 68.49 96.23 135.22 190

6"(150A) 4.000" 40/50 9.18 12.9 18.12 25.48 35.78 50.28 70.65 99.27 139.49 196

6.000" 50/70 18.73 26.32 36.99 51.97 70.59 102.62 144.19 202.6 284.67 400

1. Over 6" Cv Characteristic : Please contact to sales lap of BFS.

11

8-3. Conventional Cage Trim Cv Chart Linear Characteristic

Percent of Plug Travel (%) 10 20 30 40 50 60 70 80 90 100

Valve Size Orifice

Dia. Travel

(mm)

Rated Cv

FL 0.94 0.94 0.93 0.93 0.92 0.92 0.91 0.91 0.90 0.90

1.5" (40A) 1.58" 20/30 4.55 7.93 11.32 14.7 18.08 21.47 24.85 28.23 31.62 35

2" (50A0 1.97" 30 6.11 10.65 15.2 19.74 24.48 28.83 33.37 37.91 42.46 47

2.5" (65A) 2.5" 30/40 9.49 16.55 23.6 30.66 37.72 44.77 51.83 58.89 65.94 73

3" (80A) 2" 30/40 7.15 12.47 17.78 23.1 28.42 33.73 39.05 44.47 49.68 55

3.15 30/40 13.65 23.8 33.95 44.1 54.25 64.4 74.55 84.7 94.85 105

4" (100A) 3.15" 40/50 14.3 24.93 35.57 46.2 56.83 67.47 78.1 88.73 99.37 110

3.94" 40/50 24.7 43.07 61.43 79.8 98.17 116.5 134.9 153.3 171.6 190

6" (150A) 3.94" 40/50 26 45.3 64.7 84 103.3 122.7 142 161.3 180.7 200

5.98" 50/70 52 98.7 129.3 168 206.7 245.3 284 322.7 361.3 400

8" (200A) 7.8" 70 70.2 122.4 174.6 226.8 279 331.2 383.4 435.6 487.8 540

100 87.1 151.9 216.6 281.4 346.2 410.9 475.7 540.5 605.2 670

10" (250A0 9.88" 70 109.2 190.4 271.6 352.8 434 515.2 596.4 677.6 758.8 840

100 135.2 235.7 336.3 436.8 537.3 637.9 738.4 838.9 939.5 1040

12" (300A) 11.65" 70 136.5 238 339.5 441 542.5 644 745.5 847 948.5 1050

100 188.5 328.7 458.8 609 749.2 889.3 1029 1169 1040 1450

14" (350A) 13.60" 100 195 340 485 630 775 920 1065 1210 1355 1500

130 257.4 448.8 640.2 831.6 1023 1214 1406 1597 1788 1980

16" (400A) 15.6" 130 266.5 464.7 662.8 861 1059. 1257 1455 1654 1852 2050

130 338 589.3 840.7 1092 1343. 1595 1846 2097 2349 2600

Over 16" Cv Characteristic : Please contact to sales lap of BFS.

8-4. Conventional Cage Trim Cv Chart Equal-percentage Characteristic

Percent of Plug Travel (%) 10 20 30 40 50 60 70 80 90 100

Valve Size Orifice

Dia. Travel

(mm)

Rated Cv

FL 0.94 0.94 0.93 0.93 0.92 0.92 0.91 0.91 0.90 0.90

1.5" (40A) 1.58" 20/30 1.64 2.3 3.24 4.55 6.39 8.98 12.62 17.73 24.91 35

2" (50A0 1.97" 30 2.2 3.09 4.35 6.11 8.58 12.06 16.94 23.81 33.45 47

2.5" (65A) 2.5" 30/40 3.28 4.61 6.47 9.09 12.78 17.96 25.23 35.45 49.82 70

3" (80A) 2"

3.15

30/40 3.33 4.67 6.56 9.23 12.96 18.21 25.93 35.96 50.53 71

30/40 4.92 6.91 9.71 13.64 19.17 26.94 37.85 53.18 74.73 105

4" (100A) 3.15" 40/50 5.15 7.24 10.17 14.29 20.08 28.22 39.65 55.71 78.28 110

3.94" 40/50 8.9 12.5 17.57 24.69 34.69 48.74 68.49 96.23 135.2 190

6" (150A) 3.94" 40/50 9.2 12.9 18.1 25.5 35.8 50.3 70.7 99.3 139.5 190

5.98" 50/70 18.7 26.3 37 52 70.6 102.6 144.2 202.6 284.7 400

8" (200A) 7.8" 70 24.4 34.2 48.1 67.6 94.9 133.4 187.4 263.4 370.1 520

100 30.4 42.8 60.1 84.5 118.7 166.8 234.3 329.2 462.6 650

10" (250A0 9.88" 70 39.3 55.3 77.7 109.1 153.4 215.5 302.8 425.5 597.8 840

100 48.7 68.4 96.2 135.1 189.9 266.8 374.9 526.8 740.2 1040

12" (300A) 11.65" 70 47.8 67.1 94.3 132.5 186.2 261.7 367.7 516.6 725.9 1020

100 66.5 93.5 131.3 184.5 259.3 364.3 511.9 719.2 1010 1420

14" (350A) 13.60" 100 67.9 95.4 134.1 188.4 264.7 372 522.7 734.4 1031 1450

130 92.7 130.3 183.1 257.3 361.5 507.9 713.7 1003 1409 1980

16" (400A) 15.6" 130 89 125 175.7 246.9 346.9 487.4 684.9 962.3 1352 1900

130 118 165.8 233 327.4 460.1 646.5 908.4 1276 1793 2520

Over 16" Cv Characteristic : Please contact to sales lap of BFS.

12

8-5. MH1S / Multi-Hole 1-Stage Cage Trim Cv Chart Linear Characteristic

Percent of Plug Travel (%) 10 20 30 40 50 60 70 80 90 100

Valve Size Orifice

Dia. Travel

(mm)

Rated Cv

FL 0.94 0.94 0.93 0.93 0.92 0.92 0.91 0.91 0.90 0.90

1.5" (40A) 1" 20/30 1.3 2.6 3.9 5.2 6.5 7.8 9.1 10.4 11.7 13

2" (50A0 1.6" 30 3 6 9 12 15 18 21 24 27 30

2.5" (65A) 2.2" 30/40 4 9 13 17 22 26 30 34 39 43

3" (80A) 2.5" 40 6 12 17 23 29 35 41 46 52 58

50 7 14 22 29 36 43 50 58 65 72

4" (100A) 3.15" 40 9 17 26 34 43 51 60 68 77 85

3.6" 50 11 22 33 44 55 66 77 88 99 110

6" (150A) 4" 50 13 26 39 52 65 78 91 104 117 130

5" 70 23 46 69 92 115 138 161 184 207 230

8" (200A) 6.5" 70 29 58 87 116 145 174 203 232 261 290

100 38 76 114 152 190 228 266 304 342 380

10" (250A0 8" 70 39 78 117 156 195 234 273 312 351 390

100 65 130 195 260 325 390 455 520 585 650

12" (300A) 10" 70 63 126 189 252 315 378 441 504 567 630

100 84 168 252 336 420 504 588 672 756 840

14" (350A) 12" 100 86 182 278 374 470 566 662 758 854 950

130 110 220 330 440 550 660 770 880 990 1100

16" (400A) 13" 130 136 272 408 544 680 816 952 1088 1224 1360

150 180 360 540 720 900 1080 1260 1440 1620 1800

Over 16" Cv Characteristic : Please contact to sales lap of BFS.

8-6. MH1S / Multi-Hole 1-Stage Cage Trim Cv Chart Equal-Percentage Characteristic

Percent of Plug Travel (%) 10 20 30 40 50 60 70 80 90 100

Valve Size Orifice

Dia. Travel/m

m

Rated Cv

FL 0.94 0.94 0.93 0.93 0.92 0.92 0.91 0.91 0.90 0.90

1.5" (40A) 1" 20/30 1.2 2.4 3.6 4.8 6 7.2 8.4 9.6 10.8 12

2" (50A0 1.6" 30 1.9 3.8 5.7 7.6 9.5 11.4 13.3 15.2 17.1 19

2.5" (65A) 2.2" 30/40 2.4 4.8 7.2 9.6 12 14.4 16.8 19.2 21.6 24

3" (80A) 2.5" 40 3 6 9 12 15 18 21 24 27 30

50 4 9 13 17 22 26 30 34 39 43

4" (100A) 3.15" 40 6.1 10.7 15.2 19.7 24.3 28.8 33.4 37.9 42.5 47

3.6" 50 7 14 22 29 36 43 50 58 65 72

6" (150A) 4" 50 8 15 23 30 38 45 53 60 68 75

5" 70 13 26 39 52 65 78 91 104 117 130

8" (200A) 6.5" 70 16 31 47 62 78 93 109 124 140 155

100 19 38 57 76 95 114 133 152 171 190

10" (250A0 8" 70 25 50 75 100 125 150 175 200 225 250

100 35 70 105 140 175 210 245 280 315 350

12" (300A) 10" 70 38 75 113 150 188 225 263 300 338 375

100 42 84 126 168 210 252 294 336 378 420

14" (350A) 12" 100 50 100 150 200 250 300 350 400 450 500

130 60 120 180 240 300 360 420 480 540 600

16" (400A) 13" 130 80 160 240 320 400 480 560 640 720 800

150 111 221 332 442 553 663 774 884 995 1105

Over 16" Cv Characteristic : Please contact to sales lap of BFS.

13

9. Body Dimensions 9-1. LG/LZ/LA-Series, Globe & Angle Body

unit / mm Valve Size

ANSI Class

A-Globe B

Z-Body Angle Bonnet Extension Lengths (To suit customer requirements) RF Welded D E F G H

20A (3/4")

150 251 63 254 89 32 108 108305 381 450 610 - 300 251 78 254 89 32 108 108

600 251 78 254 89 32 108 108

25A (1")

150 286 75 267 89 32 108 108305 381 450 610 - 300 286 83 267 89 32 108 108

600 286 83 267 89 32 108 108

40A (1.5")

150 222 286 63 305 113 43 121 121305 381 450 610 762 300 235 286 78 305 113 43 121 121

600 251 286 78 305 113 43 121 121

50A (2")

150 254 286 75 305 140 51 146 146305 381 450 610 762 300 267 286 83 305 140 51 146 146

600 286 286 83 305 140 51 146 146

80A (3")

150 298 337 95 343 191 83 178 178450 533 610 762 914 300 318 337 105 343 191 83 178 178

600 337 337 105 343 191 83 178 178

100A (4")

150 352 394 115 368 229 95 222 222450 533 610 762 914 300 368 394 128 368 229 95 222 222

600 394 394 128 368 229 95 222 222

150A (6")

150 451 508 140 432 324 127 225 225610 686 762 914 - 300 473 508 160 432 324 127 225 225

600 508 508 178 432 324 127 279 279

200A (8")

150 543 610 173 508 419 150 333 333610 686 762 914 - 300 568 610 190 508 419 150 333 333

600 610 610 210 508 419 150 333 333

250A (10")

150 673 752 221 610 508 184 - -762 838 914 1067 - 300 708 752 223 610 508 184 - -

600 752 752 255 610 508 184 - -

300A (12")

150 737 819 268 762 584 203 - -- - - - - 300 775 819 268 762 584 203 - -

600 819 819 280 762 584 203 - -

350A (14")

150 889 1029 367 - - - - -- - - - - 300 927 1029 367 - - - - -

600 972 1029 367 - - - - -

400A (16")

150 1016 1108 377 - - - - -- - - - - 300 1057 1108 377 - - - - -

600 1108 1108 377 - - - - -

1. Flanged end face-to-face dimensions are per ISA-75.08.01-2002 and 78.08.06-2002 2. Butt-weld end-to-end dimensions are per ISA-75.08.05-2002 3. Other size and pressure rating grade valves : Please contact BFS sales Rep. 4. All dimensions are for reference only. Please consult the factory for certified dimensions. 5. Extension Bonnet Diameter "P" / 1(25mm)" Valve - 34mm. Over1-1/2"(40mm) - 48mm.

14

10. Actuator Dimension 10-1. RA/DA-Series, Spring Diaphragm Actuator

Model Actuator Dimension / mm Weight / kg

A B C D E F G H Standard Wheel

S1/250 210 340 200 230 250 14 17

S2/290 230 370 200 230 290 21 28

S3/370 230 410 200 230 370 40 49

S4/480 360 630 480 470 400 97 113

S5/550 360 680 550 470 400 125 149

650mm diameter Actuator application / Optional

Side mounted Hand-wheel /Optional.

10-2. CD/CS-Series, Pneumatic Cylinder Actuator

Double Cylinder Spring Cylinder Generals

Model B Model B A C D E F G H

CD20/200 280 CS20/200 680 230 280 500 375 400 215 150

CD25/250 280 CS25/250 680 360 340 500 375 400 215 150

CD30/300 280 CS30/300 680 360 390 500 375 400 215 150

CD35/350 330 CS35/350 730 440 440 600 500 400 215 150

CD40/400 330 CS40/400 730 490 490 600 500 400 215 150

CD50/500 380 CS50/500 780 600 600 600 500 400 215 150

1. The marked 'B' dimension is standard specification. Therefore based on client requirement, the actuator is to be manufactured differently

as optional specification

2. Manual Hydraulic Hand-Jack & Side Mounted Hand-wheel : Optional.

15

11. CONVERSION UNIT

Specific Gravity of air G = 1 (Reference for gases)

U.S gallon of water = 8.33lbs @std. cond

1 cubic foot of water = 7.48gallons

Air specific volume = 1/density = 13.1 cubic feet/lb

G of any gas = density of gas/0.076

Specific gravity of water = 1 (reference for liquids)

1 cubic foot of water = 62.34 lbs@std. cond. (=density)

1 cubic foot of air = 0.076 lbs@std. cond. (=air density)

Air molecular weight M = 29

G of any gas = molecular wt. of gas/29

G of Gas at flowing Temperature = G x 520 / T + 460

Standard conditions (U.S customary) are at 14.69 psia & 60F

Flow Conversion of gas

SCFH= Lbs/hr / density SCFH = Lbs/hr x 379 / M SCFH = Lbs/hr x 13.1 / G

Flow Conversion of Liquid

GPM = Lbs/hr / 500xG

Temperature Conversion

F (Fahrenheit) = C (9/5) +32 C (Celsius) = (F-32) 5/9

Metric Conversion Unit

Multiply

Millimeters

Centimeters

Inches

Feet

Feet

Sq. Centimeters

Sq. Centimeters

Sq. Inches

Sq. Inches

Sq. feet

Gallons US (GPM)

Gallons US (GPM)

Gallons US (GPM)

Cubic feet/minute

Cubic feet/hour

Cubic feet/hour

Cubic meters/hr

Cubic meters/hr

Feet per sec.

Feet per sec.

Feet per sec.

By

LENGTH

0.039

0.394

2.54

30.48

0.304

AREA

0.155

0.001076

6.452

0.00694

929

FLOW RATES

3.785

0.133

0.227

7.481

0.1247

0.01667

4.403

35.31

VELOCITY

0.3048

1.097

0.6818

To Obtain

inches

inches

Centimeters

Centimeters

Meters

Sq. Inches

Sq. feet

Sq. Centimeters

Sq. feet

Sq. Centimeters

Liters/min

ft³/min

m³/hr

GPM

GPM

ft³/min

GPM

Ft³/hr

meters/sec.

km/hr

miles/hr

Multiply

Cubic feet

Cubic feet

Liters

Liters

Liters

Gallons

Gallons

Gallons

Pounds

Kilogram

Pounds/sq. inch

Pounds/sq. inch

Pounds/sq. inch

Pounds/sq. inch

Pounds/sq. inch

Pounds/sq. inch

Pounds/sq. inch

Atmosphere

Atmosphere

Atmosphere

Atmosphere

bar

Kilogram/sq. cm

KiloPascal

By

VOLUME &

CAPACITY

28.32

7.4805

61.02

0.03531

0.264

3785.0

231.0

0.1337

WEIGHT

0.453

2.205

PRESS. & HEAD

0.06895

0.06804

0.0703

2.307

0.703

5.171

2.036

14.69

1.013

1.033

101.3

14.50

14.22

0.145

To Obtain

Liters

Gallons

Cubic inches

Cubic feet

Gallons

Cubic cm

Cubic inches

Cubic feet

Kilogram

Pounds

bar

Atmosphere

Kg/cm²

ft of H₂O (4℃)

m of H₂O (4℃)

cm of Hg (0℃)

inch of Hg (0℃)

psi

bar

Kg/cm²

kPa

psi

psi

psi

Cryogenic Service Control Valves LG/LA/LZ-Series LG/LA/LZ Series

Best Flow Solution

BFS Incorporationbl k l d d i l l23block-3lot, Geumdan-Industrial-Complex

#17, 114beongil, Geumdan-ro, Seo-gu, Incheon-city, Korea

T/+82-32-329-9142 F/+82-32-329-9148

www.bfsvalve.com