04 4:37 PM Page 1 API Seri e s

API Series Series 526

CATALOG The Safety Valve

Type 526

Type 526 Balanced bellows design

Type 526 Plain lever H3

Type 526 Open bonnet

Flanged Safety Relief Valves · API Series Contents

Contents

Applications

5

Features and Benefits

5

Codes and Standards

5

Materials • Conventional Design • Balanced Bellows Design • Sour Gas Service

6 8 9

How to order • Numbering system • Valve Codes Overview

10 12

Specifications • Orifice D • Orifice E • Orifice F • Orifice G • Orifice H • Orifice J • Orifice K • Orifice L • Orifice M • Orifice N • Orifice P • Orifice Q • Orifice R • Orifice T

13 14 16 18 20 22 24 26 28 30 32 34 36 38 40

Accessories and Options Caps and Levers Balanced Bellows Metal Seat Soft Seal Heating Jacket Lift Indicator DIN Flanges

42 44 45 46 48 49 50

Spare Parts

52

Approvals

59

Capacity Tables • Capacities US Units • Capacities Metric Units • Capacities US Units • Capacities Metric Units • Capacities US Units • Capacities Metric Units

STEAM STEAM AIR AIR WATER WATER

Specification Sheet

60 61 62 63 64 65 66

Type 526 Cap H2

Type 526 Packed lever H4

LWN 470.01

3

Type 526

4

Flanged Safety Relief Valves · API Series

LESER´ s API series 526 is a

LESER´ s API series 526

spring loaded pressure relief valve

been optimized in close cooperation

series, specially designed and manu-

with plant engineers and service spe-

factured to API 526 and approved

cialists, simplifying design with fewer

according to ASME (Sec. VIII, Div. 1)

components for less down time, fewer

the Canadian CRN, the European PED

spare parts and lower maintenance

standard, the German AD 2000-Merk-

costs.

blatt A2 and those of many other

Extensive testing at the LESER

countries, covering requirements from

ASME-certified test lab together with

end-users, OEM´ s and engineering

up to date manufacturing processes

companies worldwide, thus allowing

ensure the reliability of this state of

immediate replacement.

the art product.

has

LWN 470.02

Flanged Safety Relief Valves · API Series Applications · Features and Benefits · Codes and Standards

Applications

Features and Benefits

Codes and Standards

LESER´ s API series 526 presents the simple safe solution for heavy duty applications, such as crude oil extraction, transportation and processing in ● Refineries ● Chemical industry ● Petrochemical industry ● Oil and Gas - Onshore and Offshore ● Oilfields (“Christmas trees”) ● Vessels & piping systems ● Blow-down systems ● Storage tank farms

LESER´s API series 526 covers a large variety of types, materials and options to fit any application:

LESER´s API series 526 complies with the following codes and standards: ● ASME Section VIII – National Board certified capacities (single trim for steam, gas and liquid service): UV-stamp ● ASME Section II - materials ● ASME B16.34 and ASME B16.5 flanging ● API 526 – fourth edition 1995 ● API 520 and 527 ● NACE MR 0175 ● ISO 4126 ● PED 97 / 23 / EC (CE-marking) ● CRN, VdTUEV-SV 100, AD 2000-Merkblatt A2 ● Others

Scope of Design Seven valve sizes from 1” through 8” ● 14 orifice sizes from D through T ● Materials: WCB, WC6, CF8M and a wide range of material variations for critical applications ● Open or closed bonnet, packed or plain lifting lever or gastight cap ● Optional balanced bellows construction for back pressure compensation ● Heating jacket available for high viscosity fluids ● Many other options to adjust to various operating conditions ●

Simplified design for “built-in safety” Fool-proof design with few parts for built-in safety ● Single trim for steam, gas and liquid for fewer spare parts and easier maintenance ● One-piece spindle reduces friction ● Two-point-guided nozzle for improved alignment ● Self draining body avoids residues and reduces corrosion ● Long springs for large pre s s u re ranges ●

Ease of plant design, installation, operation and maintenance ● Reduced number of components for easier and more cost effective maintenance ● Replaceable nozzle and disc ● Stellited or hardened metal sealing for longer product life ● Optional soft seat for superior tightness ● Integral cast support brackets

LWN 470.03

5

Type 526

Flanged Safety Relief Valves · API Series Materials – Conventional Design

Materials – Conventional Design Standard Service Type 5262 Trim: standard

Item

Part Name

1 5 6

Body Nozzle Adjusting ring

SA 216 WCB 316L 316L

7

Disc

Hardened stainless steel

8

Guide

316L

9 12 14 16 / 17

Bonnet Spindle Split ring Spring plate

SA 216 WCB AISI 420 AISI 420 12L13

18

Adjusting screw with bushing

AISI 430F PTFE

19 22 40

Lock nut Lift stop Cap H2

Steel 316L 12L13

54

Spring

High temperature alloy steel

55 56 60

Stud Nut Gasket

B7 2H Graphite / 316L

61

Ball

Hardened stainless steel

69 73

Needle bearing Lock screw

316L 316L

Remark Nozzles for flange classes 600 and higher are supplied with stellited sealing surfaces as a stan-dard for improved wear resistance.

6

LWN 470.04

Flanged Safety Relief Valves · API Series Material Options – Conventional Design

Material Options – Conventional Design Corrosive Service1 Type 5264 Item

Part Name

1 5 6 7 8

Body Nozzle Adjusting ring Disc Guide

9

Bonnet

12 14 16 / 17

Trim: Standard

Trim: Hastelloy® Grade HA

Trim: Monel® Grade MA

Trim: Duplex® Grade DA

Spindle Split ring Spring plate

SA 351 CF8M 316L 316L 316L stellited 316L SA 351 CF8M or SA 479 316Ti AISI 420 316L 316L

SA 351 CF8M Hastelloy® C 316L Hastelloy® C 316L SA 351 CF8M or SA 479 316Ti AISI 420 316L 316L

SA 351 CF8M Monel® 316L Monel® 316L SA 351 CF8M or SA 479 316Ti AISI 420 316L 316L

SA 351 CF8M Duplex® 316L Duplex® 316L SA 351 CF8M or SA 479 316Ti AISI 420 316L 316L

18


316L tenifer PTFE

316L tenifer PTFE

316L tenifer PTFE

316L tenifer PTFE

19 22 40 54 55 56 60 61 69 73

Lock nut Lift stop Cap H2 Spring Stud Nut Gasket Ball Needle bearing Lock screw

316L 316L 316L Stainless steel B8M 8M Graphite / 316 L 316 316L 316L

316L 316L 316L Stainless steel B8M 8M Graphite / 316L 316 316L 316L



Notes:

1 2

Materials in blue: variations from standard bill of material 316L stellited for flange classes 900 and higher

LWN 470.05

7

Type 526

Flanged Safety Relief Valves · API Series Materials – Balanced Bellows Design

Materials – Balanced Bellows Design Standard Service Type 5262

High Temperature Service Type 5267

Trim: standard SA 216 WCB 316L 316L

Trim: standard SA 217 WC6 316L stellited 316L

Hardened stainless steel 316L

Hardened stainless steel 316L

SA 216 WCB SA 479 316L AISI 420 316L 316L 12L13

SA 217 WC6 SA 479 316L AISI 420 316L 316L 12L13

19 22 40

Adjusting screw with bushing Lock nut Lift stop Cap H2

AISI 430F PTFE Steel 316L 12L13

AISI 430F PTFE Steel 316L 12L13

54

Spring



55 56 60

Stud Nut Gasket

B8M 8M Graphite / 316L

B16 7M Graphite / 316L

61

Ball

69 73

Needle bearing Lock screw

Hardened stainless steel 316L 8M

Hardened stainless steel 316L 8M

Item 1 5 6

Part Name Body Nozzle Adjusting ring

7

Disc

8

Guide

9 Bonnet 11 Bonnet spacer1 12 Spindle 14 Split ring 15 Bellows 16 / 17 Spring plate 18

Note:

1

Orifice T without bonnet spacer

Remark Nozzles for flange classes 600 and higher are supplied with stellited sealing surfaces as a stan-dard for improved wear resistance.

8

LWN 470.06

Flanged Safety Relief Valves · API Series Material Options – Balanced Bellows Design · Sour Gas Service (H2 S)

Material Options – Balanced Bellows Design Corrosive Service 1 Type 5264 Trim: Hastelloy® Grade HB

Trim: Monel® Grade MB

Trim: Duplex® Grade DB

Item

Part Name

Trim: Standard

1 5 6 7 8

Body Nozzle Adjusting ring Disc Guide

9

Bonnet

11 12 14 15 16 / 17

Bonnet spacer Spindle Split ring Bellows Spring plate

SA 351 CF8M 316L2 316L 316L stellited 316L SA 351 CF8M or SA 479 316Ti SA 479 316L AISI 420 316L 316L 316L

SA 351 CF8M Hastelloy® C 316L Hastelloy® C 316L SA 351 CF8M or SA 479 316Ti SA 479 316L AISI 420 316L Hastelloy® 316L

SA 351 CF8M Monel® 316L Monel® 316L SA 351 CF8M or SA 479 316Ti SA 479 316L AISI 420 316L Monel® 316L

SA 351 CF8M Duplex® 316L Duplex® 316L SA 351 CF8M or SA 479 316Ti SA 479 316L AISI 420 316L Duplex® 316L

18


316L tenifer PTFE

316L tenifer PTFE

316L tenifer PTFE

316L tenifer PTFE

19 22 40 54 55 56 60 61 69 73

Lock nut Lift stop Cap H2 Spring Stud Nut Gasket Ball Needle bearing Lock screw





Notes:

1 2

Materials in blue: variations from standard bill of material 316L stellited for flange classes 900 and higher

Sour Gas Service (H2 S) NACE MR 0175 NACE MR 0175 defines two levels for the sour gas service of safety relief valves: Level 1: for compliance of wetted parts in closed position Level 2: for compliance of wetted parts in open position.

Note:

1

Type

Body Material

5262

SA 216 WCB

5264

SA 351 CF8M

LESER’s API series 526 fulfills the requirements with the standard bill of materials. Only very few modifications according to the table below are recommended. Material test reports and hardness test certificates for pro-duct wetted parts are available on request.

Modification Level 1 Level 2 Material Information Option Code Material Information Option Code Disc material: Disc material: J25 J25 316L stellited 316L stellited1 Use standard bill of materials

–

Use standard bill of materials1

–

Spindle material 316L or stainless steel bellows are available on request.

LWN 470.07

9

Type 526

Flanged Safety Relief Valves · API Series How to Order – Numbering System

How to Order Numbering System

1

Article No.

1

2

3

4

526 2 . 001 2

10

1.

Valve Type 526

2.

Material Code 2 – body+bonnet material WCB 4 – body+bonnet material CF8M 7 – body+bonnet material WC6

3.

Valve Code Identifies valve size, body material, orifice and flange class. Refer to table “Valve Codes Overview” page 12.

4.

Code for Lifting Device 2 – screwed cap H2 3 – plain lever H3 4 – packed lever H4 5 – plain lever H3 with open bonnet

2

Set Pressure

3

Connections

Please state unit (in gauge)! Please do not exceed pressure range mentioned in the spring charts.

5262.0012

100 psig

Article No.

Set Pressure

Flanges acc. to

Option Code

ANSI B16.5

not required

DIN EN 1092-1 / DIN 2501

Please refer to table on page 50 – 51.

Other

please state in writing

Connections

LWN 470.08

Flanged Safety Relief Valves · API Series How to Order – Numbering System

4

5

Options

Options Type 526 • RJ groove inlet • O-ring-disc

CR EPDM FKM FFKM

“K” “D” “L” “C”

• Disc 316L stellited • Nozzle 316L stellited • Stainless steel bellows - open bonnet - closed bonnet - high temp. equipment (Type 5267 only) • Stainless steel spring • Adaptor for proximity switch • Proximity switch • Test gag - cap H2 - packed lever H4 • Free of oil and grease • Materials - NACE - MONEL® - Hastelloy® - Duplex steel • Heating jacket - Couplings FNPT - Lap joint flanges

J22

J68 J78 J88 X04 J39 J93

6

Please select requested documentation: Material test report: EN 10204-3.1.B Part Body Bonnet Cap / lever cover Nozzle Disc Studs / nuts

Option Code H 01 L 30 L 31 L 59 L 23 L 24

J69 J70 J85

1

Code and Medium

2

1 . 1 1 .

Code 1 ASME Section VIII 2. CE/VdTUEV 3. ASME Section VIII + CE/VdTUEV

2 .

Medium .1 Gases .2 Liquids .3 Steam .0 Steam / Gases / Liquids (valid only for CE / VdTUEV)

H01 Grade MA Grade MB Grade HA Grade HB Grade DA Grade DB S01 + H30 S01 + H32

H01 Options

LWN 470.09

Option Code L58 J21 J22 J23 J20 J25 L61

Documentation

L30

1.1

Documentation

Code and Medium

11

Type 526

Flanged Safety Relief Valves · API Series How to order · Valve Codes Overview

How to Order

Valve Codes Overview Orifice letter

Orifice [Inch2 ]

Body Material D E F G Orifice letter

0.110 0.196 0.307 0.503 Orifice [Inch2 ]

Body Material H J

0.785 1.287

K

1.838

Orifice letter

Orifice [Inch2 ]

Body Material L M N

2.853 3.600 4.340

P

6.380

Q

11.050

R

16.000

T

26.000

150x150

300Lx150

300x150

900x300

1500x300

2500x300

WCB WC6 CF8M WCB WC6 CF8M WCB WC6 CF8M WCB WC6 CF8M WCB WC6 CF8M WCB WC6 CF8M WCB WC6 CF8M

1” x 2” 001

–

1” x 2” 010

002

1” x 2” 015

– /

024 039

1 1/2” x 3” 045

–

1” x 2” 011

002

1” x 2”

1 1/2” x 2” 029

–

110

150x150

016

– –

025 040

1 1/2” x 3” 046

–

1” x 2” 011

003

1” x 2”

1 1/2” x 2” 030

006

111

300Lx150

016

020

031

035

025 041

1 1/2” x 3” 047

052

007

Use 1500-lb 012

1” x 2”

1 1/2” x 2”

112

017

021

026

1 1/2” x 2” 032 048

053

113

033 054

013

022

027

1 1/2” x 3”

1 1/2” x 3” 049

008

1 1/2” x 2” 018

these sizes

042

1 1/2” x 3”

1 1/2” x 2” 004

dimensions for

Flange Class 300x150 600x150

114

900x150

037

043

1 1/2” x 3” 005 019

055

014

023

028

1 1/2” x 3” 034

2” x 3” 050

009

1 1/2” x 3”

038

044

2” x 3” 115

051

056

116

1500x300

WCB WC6 CF8M WCB WC6 CF8M WCB WC6 CF8M WCB WC6 CF8M WCB WC6 CF8M WCB WC6 CF8M

1 1/2” x 3” 142

–

152

1 1/2” x 3” 143

2” x 3” 162

– –

153

2” x 3” 144

2” x 3” 196

163

3” x 4” 202

– –

150x150

203

–

2” x 3” 154

145

3” x 4” 197

164

3” x 4” 211

148 168

212

300Lx150

203

207

149

2” x 3” 155

146

3” x 4” 198

165

3” x 4”

169

199

166

3” x 4” 212

204

208

150

2” x 3” 156

147

3” x 4” 170

213

205

209

151

157

3” x 4” 200

167

3” x 6”


171

201

3” x 6” 214

900x150

206

210

215

1500x150

WCB WC6 CF8M WCB WC6 CF8M WCB WC6 CF8M WCB WC6 CF8M WCB WC6 CF8M WCB WC6 CF8M

3” x 4” 232

–

3” x 4” 242

233

4” x 6” 580

– –

587

581

–

597

591

–

653

646

662

658

–

671

666

–

– – –

678

669

598

–

235

581

584

591

594

654

647

663

658

672

667

650

588

582

598

679

236

585

592

595

655

648

663

659

651

589

673

4” x 6” 246

583

586

–

4” x 6” 599

593

596

237

241

–

656 664

649

652

Flange Class inlet x outlet

–

4” x 6”

6” x 8” 661

240

4” x 6”

4” x 6”

6” x 10” –

4” x 6” 245

4” x 6”

6” x 8” 660

239

4” x 6”

4” x 6”

8” x 10” 676

4” x 6” 244

4” x 6”

6” x 8”

8” x 10” 675

588

6” x 8”

6” x 8” 665

–

238

4” x 6”

4” x 6”

6” x 8” 657

234

4” x 6”

4” x 6” 645

4” x 6” 243

4” x 6”

4” x 6” 590

–

Body Material –

Valve size inlet x outlet

6” x 10” 668

670

674

Valve Code

8” x 10” 676

677

Note: “L” in Flange Class 300L means low. Class 300 has higher pressure-temperature ratings than class 300L.

12

Flange Class 600x150

679

The valve code identifies · Valve size · Body Material · Orifice · Flange Class

LWN 470.10

Flanged Safety Relief Valves · API Series Specifications

Specifications

The following pages contain selection charts and specification tables. They specify important data about the valves based on the API 526 fourth edition 1995, like ● Valve sizes ● Body materials ● Flange classes ● Set pressure and temperature limits ● Back pressure limits

Example ● Set pressure: 3500 psig ● Temperature: 480 ºF ● Required orifice letter: “D”

How to use Selection Charts Step

Procedure

References

1

Determination of the required flow area and orifice letter (sizing)

API RP 520 VALVESTAR® – Sizing software Capacity tables

Determination of: • Material • Flange class • Valve Code 005

2

Selection charts page 14 – 40

3

Determination of the material code

Specification tables page 15 – 41

4

Determination of the code for lifting device

Specification tables page 15 – 41

Valve Code

005

Selection Chart – Orifice D

ANSI flange class

Valve Code

LWN 470.11

13

Type 526

14

Flanged Safety Relief Valves · API Series Selection Chart – Orifice D

D

LWN 470.12

Flanged Safety Relief Valves · API Series Specifications – Orifice D

D

Orifice D – Specification Valve Size 1D2 1D2 1D2 11/2 D 2 11/2 D 2 11/2 D 3

Valve Size 1D2 1D2 1D2 11/2 D 2 11/2 D 2 11/2 D 3 Notes:

1 2

Flange Rating

Max. set pressure [psig] WCB

Article No. CF8M

Inlet

Outlet

CF8M

WCB

WC6

-76° F 1

-21° F

150 300 600 900 1500 2500

150 150 150 300 300 300

5264.010 ■ 5264.011 ■ 5264.012 ■ – 5264.013 ■ 5264.014 ■

5262.001 ■ 5262.002 ■ 5262.003 ■ – 5262.004 ■ 5262.005 ■

– 5267.006 ■ 5267.007 ■ – 5267.008 ■ 5267.009 ■

275 720 1440

275 720 1440

3600 4000

3600 6000

Flange Rating

100° F

450° F

800° F

CF8M

Inlet

Outlet

CF8M

WCB

WC6

-60°C 1

-29°C

150 300 600 900 1500 2500

150 150 150 300 300 300

5264.010 ■ 5264.011 ■ 5264.012 ■ – 5264.013 ■ 5264.014 ■

5262.001 ■ 5262.002 ■ 5262.003 ■ – 5262.004 ■ 5262.005 ■

– 5267.006 ■ 5267.007 ■ – 5267.008 ■ 5267.009 ■

19.0 49.6 99.3

19.0 49.6 99.3

248.2 275.8

248.2 413.7

1000° F

285 185 80 – – 740 615 410 510 225 1015 1480 1235 825 445 Use 1500-lb dimensions for these sizes 2540 3705 3080 2060 1115 6000 5135 3430 4230 1860

Max. set pressure [bar] WCB

Article No.

WC6 800° F

2

38°C

232°C

427°C

WC6 2 427°C

538°C

19.7 12.8 5.5 – – 51.0 42.4 28.3 35.2 15.5 102.0 85.1 56.9 70.0 30.6 Use 1500-lb dimensions for these sizes 255.4 212.4 142.0 175.1 76.8 291.6 413.7 354.0 236.5 128.2

Back pressure limits [psig] Conv.

Bellows

285 285 285

230 230 230

600 740

500 500

Back pressure limits [bar] Conv.

Bellows

19.7 19.7 19.7

15.9 15.9 15.9

41.4 51.0

34.5 34.5

Minimum Temperature: -450° F (-268° C) Bellows for spring heat protection recommended

■ = Add here code for lifting device and bonnet: Construction

Code

CF8M

WCB

WC6

closed bonnet, cap H2

2

✓

✓

✓

closed bonnet, plain lever H3

3

–

✓

✓

closed bonnet, packed lever H4

4

✓

✓

✓

open bonnet, plain lever H3

5

–

✓

✓

Conventional design

Balanced bellows design

Orifice D – Dimensions and Weights Valve Size 1D2 1D2 1D2 11/2 D 2 11/2 D 2 11/2 D 3

Valve Size 1D2 1D2 1D2 11/2 D 2 11/2 D 2 11/2 D 3

LWN 470.13

Flange Rating

Dimensions [inch]

Inlet

Outlet

a

b

s

H

150 300 600 900 1500 2500

150 150 150 300 300 300

4 1/8 4 1/8 4 1/8

4 1/2 4 1/2 4 1/2

1 3/16 1 3/16 1 3/16

13 5/32 13 5/32 13 5/32

4 1/8 5 1/2

5 1/2 7

1 3 /4 2 1/4

16 3/16 17 3/16

Flange Rating

A

Weight [lbs] B

C

D

E

5 /8 5 1/8 – Ø 9/16 5 7/32 5 /8 5 1/8 – Ø 9/16 5 7/32 5 /8 5 1/8 – Ø 9/16 5 7/32 Use 1500-lb dimensions for these sizes 5 /8 6 3/8 – Ø 9/16 5 3/32 5 /8 6 3/8 – Ø 9/16 7 15/32

Dimensions [mm]

Inlet

Outlet

a

b

s

H

150 300 600 900 1500 2500

150 150 150 300 300 300

105 105 105

114 114 114

30 30 30

335 335 335

105 140

140 178

44 57

412 436

A

m

H

m

38.1 38.1 38.1

14 1/8 14 1/8 14 1/8

40.5 40.5 40.5

68.6 92.2

17 5/32 17 3/16

73.0 98.4

Weight [kg] B

C

D

E

130 – Ø 14 132 16 130 – Ø 14 132 16 130 – Ø 14 132 16 Use 1500-lb dimensions for these sizes 162 – Ø 14 129 16 162 – Ø 14 189 16

Bellows Design [inch] [lbs]

Bellows Design [mm] [kg]

m

H

m

17.3 17.3 17.3

360 360 360

18.4 18.4 18.4

31.1 41.8

437 436

33.1 44.6

15

Type 526

16

Flanged Safety Relief Valves · API Series Selection Chart – Orifice E

E

LWN 470.14

Flanged Safety Relief Valves · API Series Specifications – Orifice E

E

Orifice E – Specification Valve Size 1E2 1E2 1E2 11/2 E 2 11/2 E 2 11/2 E 3

Valve Size 1E2 1E2 1E2 11/2 E 2 11/2 E 2 11/2 E 3 Notes:

1 2

Flange Rating


Article No. CF8M

Inlet

Outlet

CF8M

WCB

WC6

-76° F 1

-21° F

150 300 600 900 1500 2500

150 150 150 300 300 300

5264.024 ■ 5264.025 ■ 5264.026 ■ – 5264.027 ■ 5264.028 ■

5262.015 ■ 5262.016 ■ 5262.017 ■ – 5262.018 ■ 5262.019 ■

– 5267.020 ■ 5267.021 ■ – 5267.022 ■ 5267.023 ■

275 720 1440

275 720 1440

3600 4000

3600 6000

Flange Rating

100° F

450° F

800° F

CF8M

Inlet

Outlet

CF8M

WCB

WC6

-60°C 1

-29°C

150 300 600 900 1500 2500

150 150 150 300 300 300

5264.024 ■ 5264.025 ■ 5264.026 ■ – 5264.027 ■ 5264.028 ■

5262.015 ■ 5262.016 ■ 5262.017 ■ – 5262.018 ■ 5262.019 ■

– 5267.020 ■ 5267.021 ■ – 5267.022 ■ 5267.023 ■

19.0 49.6 99.3

19.0 49.6 99.3

248.2 275.8

248.2 413.7

1000° F

285 185 80 – – 740 615 410 510 225 1015 1480 1235 825 445 Use 1500-lb dimensions for these sizes 2540 3705 3080 2060 1115 6000 5135 3430 4230 1860


Article No.

WC6 800° F

2

38°C

232°C

427°C

WC6 2 427°C

538°C

19.7 12.8 5.5 – – 51.0 42.4 28.3 35.2 15.5 102.0 85.1 56.9 70.0 30.6 Use 1500-lb dimensions for these sizes 255.4 212.4 142.0 175.1 76.8 291.6 413.7 354.0 236.5 128.2


Bellows

285 285 285

230 230 230

600 740

500 500


Bellows

19.7 19.7 19.7

15.9 15.9 15.9

41.4 51.0

34.5 34.5



Code

CF8M

WCB

WC6


2

✓

✓

✓


3

–

✓

✓


4

✓

✓

✓


5

–

✓

✓

Conventional design


Orifice E – Dimensions and Weights Valve Size 1E2 1E2 1E2 11/2 E 2 11/2 E 2 11/2 E 3

Valve Size 1E2 1E2 1E2 11/2 E 2 11/2 E 2 11/2 E 3

LWN 470.15

Flange Rating

Dimensions [inch]

Inlet

Outlet

a

b

s

H

150 300 600 900 1500 2500

150 150 150 300 300 300

4 1/8 4 1/8 4 1/8

4 1/2 4 1/2 4 1/2

1 3/16 1 3/16 1 3/16

13 5/32 13 5/32 13 5/32

4 1/8 5 1/2

5 1/2 7

1 3 /4 2 1/4

16 3/16 17 3/16

Flange Rating

A

Weight [lbs] B

C

D

E

5 /8 5 1/8 – Ø 9/16 5 7/32 5 /8 5 1/8 – Ø 9/16 5 7/32 5 /8 5 1/8 – Ø 9/16 5 7/32 Use 1500-lb dimensions for these sizes 5 /8 6 3/8 – Ø 9/16 5 3/32 5 /8 6 3/8 – Ø 9/16 7 15/32

Dimensions [mm]

Inlet

Outlet

a

b

s

H

150 300 600 900 1500 2500

150 150 150 300 300 300

105 105 105

114 114 114

30 30 30

335 335 335

105 140

140 178

44 57

412 436

A

m

H

m

38.1 38.1 38.1

14 1/8 14 1/8 14 1/8

40.5 40.5 40.5

68.6 92.2

17 5/32 17 3/16

73.0 98.4

Weight [kg] B

C

D

E

130 – Ø 14 132 16 130 – Ø 14 132 16 130 – Ø 14 132 16 Use 1500-lb dimensions for these sizes 162 – Ø 14 129 16 162 – Ø 14 189 16



m

H

m

17.3 17.3 17.3

360 360 360

18.4 18.4 18.4

31.1 41.8

437 436

33.1 44.6

17

Type 526

18

Flanged Safety Relief Valves · API Series Selection Chart – Orifice F

F

LWN 470.16

Flanged Safety Relief Valves · API Series Specifications – Orifice F

F

Orifice F – Specification Valve Size 11/2 F 11/2 F 11/2 F 11/2 F 11/2 F 11/2 F 11/2 F

2 2 2 2 3 3 3

Valve Size 11/2 F 2 11/2 F 2 11/2 F 11/2 F 11/2 F 11/2 F Notes:

2 3 3 3 1 2

Flange Rating


Article No. CF8M

Inlet

Outlet

CF8M

WCB

WC6

-76° F 1

-21° F

150 300L 300 600 900 1500 2500

150 150 150 150 300 300 300

5264.039 ■ 5264.040 ■ 5264.041 ■ 5264.042 ■ – 5264.043 ■ 5264.044 ■

5262.029 ■ 5262.030 ■ 5262.031 ■ 5262.032 ■ – 5262.033 ■ 5262.034 ■

– – 5267.035 ■ 5267.036 ■ – 5267.037 ■ 5267.038 ■

275 275 720 1440

275 275 720 1440

2200 3400

3600 5000

Flange Rating

100° F

450° F

800° F

CF8M

Inlet

Outlet

CF8M

WCB

WC6

-60°C 1

-29°C

150 300L 300 600 900 1500 2500

150 150 150 150 300 300 300

5264.039 ■ 5264.040 ■ 5264.041 ■ 5264.042 ■ – 5264.043 ■ 5264.044 ■

5262.029 ■ 5262.030 ■ 5262.031 ■ 5262.032 ■ – 5262.033 ■ 5262.034 ■

– – 5267.035 ■ 5267.036 ■ – 5267.037 ■ 5267.038 ■

19.0 19.0 49.6 99.3

19.0 19.0 49.6 99.3

151.7 234.4

248.2 344.7

1000° F

285 185 80 – – 285 285 285 – – 740 615 410 510 225 1480 1235 825 1015 445 Use 1500-lb dimensions for these sizes 3705 3080 2060 2540 1115 4230 5000 5000 3430 1860


Article No.

WC6 800° F

2

38°C

232°C

427°C

WC6 427°C

2

538°C

19.7 12.8 5.5 – – 19.7 19.7 19.7 – – 51.0 42.4 28.3 35.2 15.5 102.0 85.1 56.9 70.0 30.7 Use 1500-lb dimensions for these sizes 255.4 212.4 142.0 175.1 76.9 291.6 344.7 344.7 236.5 128.2


Bellows

285 285 285 285

230 230 230 230

740 740

500 500


Bellows

19.7 19.7 19.7 19.7

15.9 15.9 15.9 15.9

51.0 51.0

34.5 34.5



Code

CF8M

WCB

WC6


2

✓

✓

✓


3

–

✓

✓


4

✓

✓

✓


5

–

✓

✓ Conventional design


Orifice F – Dimensions and Weights Valve Size 11/2 F 11/2 F 11/2 F 11/2 F 11/2 F 11/2 F 11/2 F

2 2 2 2 3 3 3

Valve Size 11/2 F 11/2 F 11/2 F 11/2 F 11/2 F 11/2 F 11/2 F

2 2 2 2 3 3 3

LWN 470.17

Flange Rating

Dimensions [inch]

Inlet

Outlet

a

b

s

H

150 300L 300 600 900 1500 2500

150 150 150 150 300 300 300

4 7 /8 4 7 /8 4 7 /8 4 7 /8

4 3 /4 4 3 /4 6 6

1 1 /4 1 1 /4 1 13/32 1 13/32

16 3/16 16 3/16 16 3/16 16 3/16

4 7 /8 5 1/2

61/2 7

1 3 /4 2 1/4

17 3/16 17 3/16

Flange Rating

A

Weight [lbs] B

C

D

E

5 /8 6 3/8 – Ø 9/16 5 27/32 5 /8 6 3/8 – Ø 9/16 5 27/32 5 /8 6 3/8 – Ø 9/16 5 27/32 5 /8 6 3/8 – Ø 9/16 5 27/32 Use 1500-lb dimensions for these sizes 5 /8 6 3/8 – Ø 9/16 6 27/32 5 /8 6 3/8 – Ø 9/16 7 15/32

Dimensions [mm]

Inlet

Outlet

a

b

s

H

150 300L 300 600 900 1500 2500

150 150 150 150 300 300 300

124 124 124 124

121 121 152 152

32 32 35 35

412 412 412 412

124 140

165 178

44 57

436 436

A

m

H

m

67.5 67.5 71.7 71.7

17 5/32 17 5/32 17 5/32 17 5/32

73 73 77.2 77.2

80.0 92.2

17 3/16 17 3/16

85.1 98.4

Weight [kg] B

C

D

E

162 – Ø 14 148 16 162 – Ø 14 148 16 162 – Ø 14 148 16 162 – Ø 14 148 16 Use 1500-lb dimensions for these sizes 162 – Ø 14 174 16 162 – Ø 14 189 16



m

H

m

30.6 30.6 32.5 32.5

437 437 437 437

33.1 33.1 35.0 35.0

36.3 41.8

436 436

38.6 44.6 19

Type 526

20

Flanged Safety Relief Valves · API Series Selection Chart – Orifice G

G

LWN 470.18

Flanged Safety Relief Valves · API Series Specifications – Orifice G

G

Orifice G – Specification Valve Size 11/2 G 3 11/2 G 3 11/2 G 3 11/2 G 3 11/2 G 3 2G3 2G3

Valve Size 11/2 G 3 11/2 G 3 11/2 G 3 11/2 G 3 11/2 G 3 2G3 2G3 Notes:

1 2

Flange Rating


Article No. CF8M

WC6

2

Back pressure limits [psig]

Inlet

Outlet

CF8M

WCB

WC6

-76° F 1

-21° F

100° F

450° F

800° F

800° F

1000° F

Conv.

Bellows

150 300L 300 600 900 1500 2500

150 150 150 150 300 300 300

5264.110 ■ 5264.111 ■ 5264.112 ■ 5264.113 ■ 5264.114 ■ 5264.115 ■ 5264.116 ■

5262.045 ■ 5262.046 ■ 5262.047 ■ 5262.048 ■ 5262.049 ■ 5262.050 ■ 5262.051■

– – 5267.052 ■ 5267.053 ■ 5267.054 ■ 5267.055 ■ 5267.056 ■

275 275 720 1440 1600 2450 2600

275 275 720 1440 2160 3600 3600

285 285 740 1480 2220 3705 3705

185 285 615 1235 1845 3080 3705

80 285 410 825 1235 2060 3430

– – 510 1015 1525 2540 3705

– – 225 445 670 1115 1860

285 285 285 285 740 740 740

230 230 230 230 470 470 470

Flange Rating


Article No. CF8M

WC6

2

Back pressure limits [bar]

Inlet

Outlet

CF8M

WCB

WC6

-60°C 1

-29°C

38°C

232°C

427°C

427°C

538°C

Conv.

Bellows

150 300L 300 600 900 1500 2500

150 150 150 150 300 300 300

5264.110 ■ 5264.111 ■ 5264.112 ■ 5264.113 ■ 5264.114 ■ 5264.115 ■ 5264.116 ■

5262.045 ■ 5262.046 ■ 5262.047 ■ 5262.048 ■ 5262.049 ■ 5262.050 ■ 5262.051 ■

– – 5267.052 ■ 5267.053 ■ 5267.054 ■ 5267.055 ■ 5267.056 ■

19.0 19.0 49.6 99.3 110.3 168.9 179.3

19.0 19.0 49.6 99.3 148.9 248.2 248.2

19.7 19.7 51.0 102.0 153.1 255.4 255.4

12.8 19.7 42.4 85.1 127.2 212.4 255.4

5.5 19.7 28.3 56.9 85.1 142.0 236.5

– – 35.2 70.0 105.1 175.1 255.4

– – 15.5 30.6 46.2 76.8 128.2

19.7 19.7 19.7 19.7 51.0 51.0 51.0

15.9 15.9 15.9 15.9 32.4 32.4 32.4



Code

CF8M

WCB

WC6


2

✓

✓

✓


3

–

✓

✓


4

✓

✓

✓


5

–

✓

✓

Conventional design


Orifice G – Dimensions and Weights Valve Size 11/2 G 3 11/2 G 3 11/2 G 3 11/2 G 3 11/2 G 3 2G3 2G3

Valve Size 11/2 G 3 11/2 G 3 11/2 G 3 11/2 G 3 11/2 G 3 2G3 2G3 LWN 470.19

Flange Rating

Dimensions [inch]

Weight [lbs]

Inlet

Outlet

a

b

s

H

A

B

150 300L 300 600 900 1500 2500

150 150 150 150 300 300 300

4 7 /8 4 7 /8 4 7 /8 4 7 /8 4 7 /8 6 1 /8 6 1/8

4 3 /4 4 3 /4 6 6 6 1/2 6 3 /4 6 3 /4

1 1 /4 1 1 /4 1 13/32 1 13/32 1 3 /4 2 11/16 2 11/16

16 3/16 16 3/16 16 3/16 16 3/16 173/16 20 15/16 20 15/16

6 3/8 6 3/8 6 3/8 6 3/8 6 3/8 7 1/4 7 1/4

– – – – – 11 4 /32 4 11/32

Flange Rating

C 9/16

Ø Ø Ø Ø Ø Ø Ø

9/16 9/16 9/16 9/16 9/16 9/16

D

E

m

H

m

5 27/32 5 27/32 5 27/32 5 27/32 6 27/32 7 13/16 7 13/16

5 /8

67.5 67.5 71.7 71.7 80.0 154.1 154.1

17 21/32 17 21/32 17 21/32 17 21/32 17 11/16 21 19/32 21 19/32

73 73 77.2 77.2 81.5 159.8 159.8

5 /8 5 /8 5 /8 5 /8 5 /8 5 /8

Dimensions [mm]

Weight [kg]

Inlet

Outlet

a

b

s

H

A

B

150 300L 300 600 900 1500 2500

150 150 150 150 300 300 300

124 124 124 124 124 156 156

121 121 152 152 165 172 172

32 32 35 35 44 68 68

412 412 412 412 436 532 532

162 162 162 162 162 184 184

– – – – – 110 110

C Ø Ø Ø Ø Ø Ø Ø

14 14 14 14 14 14 14



D

E

m

H

m

148 148 148 148 174 198 198

16 16 16 16 16 16 16

30.6 30.6 32.5 32.5 36.3 69.9 69.9

450 450 450 450 449 549 549

33.1 33.1 35.0 35.0 38.6 72.5 72.5 21

Type 526

22

Flanged Safety Relief Valves · API Series Selection Chart – Orifice H

H

LWN 470.20

Flanged Safety Relief Valves · API Series Specifications – Orifice H

H

Orifice H – Specification

Valve Size 11/2 H 3 11/2 H 3 2H3 2H3 2H3 2H3

Valve Size 11/2 H 3 11/2 H 3 2H3 2H3 2H3 2H3 Notes:

1 2

Flange Rating


Article No. CF8M

WC6

2


Inlet

Outlet

CF8M

WCB

WC6

-76° F 1

-21° F

100° F

450° F

800° F

800° F

1000° F

Conv.

Bellows

150 300L 300 600 900 1500

150 150 150 150 150 300

5264.152 ■ 5264.153 ■ 5264.154 ■ 5264.155 ■ 5264.156 ■ 5264.157 ■

5262.142 ■ 5262.143 ■ 5262.144 ■ 5262.145 ■ 5262.146 ■ 5262.147 ■

– – 5267.148 ■ 5267.149 ■ 5267.150 ■ 5267.151 ■

275 275 720 1440 1485 1600

275 275 720 1440 2160 2750

285 285 740 1480 2220 2750

185 285 615 1235 1845 2750

80 285 410 825 1235 2060

– – 510 815 1225 2040

– – 225 445 670 1115

285 285 285 285 285 740

230 230 230 230 230 415

Flange Rating


Article No. CF8M

WC6

2


Inlet

Outlet

CF8M

WCB

WC6

-60°C 1

-29°C

38°C

232°C

427°C

427°C

538°C

Conv.

Bellows

150 300L 300 600 900 1500

150 150 150 150 150 300

5264.152 ■ 5264.153 ■ 5264.154 ■ 5264.155 ■ 5264.156 ■ 5264.157 ■

5262.142 ■ 5262.143 ■ 5262.144 ■ 5262.145 ■ 5262.146 ■ 5262.147 ■

– – 5267.148 ■ 5267.149 ■ 5267.150 ■ 5267.151 ■

19.0 19.0 49.6 99.3 102.4 110.3

19.0 19.0 49.6 99.3 148.9 189.6

19.7 19.7 51.0 102.0 153.1 189.6

12.8 19.7 42.4 85.1 127.2 189.6

5.5 19.7 28.3 56.9 85.1 142.0

– – 35.2 56.2 84.5 140.7

– – 15.5 30.7 46.2 76.9

19.7 19.7 19.7 19.7 19.7 51.0

15.9 15.9 15.9 15.9 15.9 28.6



Code

CF8M

WCB

WC6


2

✓

✓

✓


3

–

✓

✓


4

✓

✓

✓


5

–

✓

✓

Conventional design


Orifice H – Dimensions and Weights Valve Size 11/2 H 3 11/2 H 3 2H3 2 H 31 2 H 32 2H3 2H3

Valve Size 11/2 H 3 11/2 H 3 2H3 2 H 31 2 H 32 2H3 2H3

Flange Rating

Dimensions [inch]

Inlet

Outlet

a

b

s

H

A

B

150 300L 300 600 600 900 1500

150 150 150 150 150 150 300

5 1/8 5 1/8 5 1/8 5 1/8 6 1/16 6 1/16 6 1/16

4 7 /8 4 7 /8 4 7 /8 4 7 /8 6 3 /8 6 3 /8 6 3 /8

1 1 /2 1 1 /2 1 11/16 1 11/16 2 3/16 2 3/16 2 3/16

16 3/16 16 3/16 21 3/32 21 3/32 21 1/8 21 1/8 21 1/8

6 3/8 6 3/8 7 1/4 7 1/4 7 1/4 7 1/4 7 1/4

– – 4 11/32 4 11/32 4 11/32 4 11/32 4 11/32

Flange Rating

C 9/16

Ø Ø Ø Ø Ø Ø Ø

9/16 9/16 9/16 9/16 9/16 9/16

D

E

m

H

m

5 /8

67.5 67.5 98.3 98.3 137.1 137.1 137.1

17 21/32 17 21/32 22 3/32 22 3/32 22 1/8 22 1/8 22 1/8

73.0 73.0 106.7 106.7 143.9 143.9 143.9

5 /8 5 /8 5 /8 5 /8 5 /8 5 /8

Weight [kg]

Inlet

Outlet

a

b

s

H

A

B

150 300L 300 600 600 900 1500

150 150 150 150 150 150 300

130 130 130 130 154 154 154

124 124 124 124 162 162 162

38 38 43 43 56 56 56

412 412 536 536 537 537 537

162 162 184 184 184 184 184

– – 110 110 110 110 110

2

dimensions for WC6 material dimensions for CF8M and WCB material


14 14 14 14 14 14 14


6 3/32 6 3/32 6 31/32 6 31/32 7 15/16 7 15/16 7 15/16

Dimensions [mm]

1

LWN 470.21

Weight [lbs]


D

E

m

H

m

155 155 177 177 202 202 202

16 16 16 16 16 16 16

30.6 30.3 44.6 44.6 62.2 62.2 62.2

450 450 562 562 563 563 563

33.1 33.1 48.4 48.4 65.3 65.3 65.3 23

Type 526

24

Flanged Safety Relief Valves · API Series Selection Chart – Orifice J

J

LWN 470.22

Flanged Safety Relief Valves · API Series Specifications – Orifice J

J

Orifice J – Specification

Valve Size 2 2 3 3 3 3

J J J J J J

3 3 4 4 4 4


J J J J J J

Notes:

3 3 4 4 4 4 1 2

Flange Rating


Article No. CF8M

WC6

2


Inlet

Outlet

CF8M

WCB

WC6

-76° F 1

-21° F

100° F

450° F

800° F

800° F

1000° F

Conv.

Bellows

150 300L 300 600 900 1500

150 150 150 150 150 300

5264.196 ■ 5264.197 ■ 5264.198 ■ 5264.199 ■ 5264.200 ■ 5264.201 ■

5262.162 ■ 5262.163 ■ 5262.164 ■ 5262.165 ■ 5262.166 ■ 5262.167 ■

– – 5267.168 ■ 5267.169 ■ 5267.170 ■ 5267.171 ■

275 275 500 625 800 800

275 275 720 1440 2160 2700

285 285 740 1480 2220 2700

185 285 615 1235 1845 2700

80 285 410 825 1235 2060

– – 510 815 1225 2040

– – 225 445 670 1115

285 285 285 285 285 600

230 230 230 230 230 230

Flange Rating


Article No. CF8M

WC6

2


Inlet

Outlet

CF8M

WCB

WC6

-60°C 1

-29°C

38°C

232°C

427°C

427°C

538°C

Conv.

Bellows

150 300L 300 600 900 1500

150 150 150 150 150 300

5264.196 ■ 5264.197 ■ 5264.198 ■ 5264.199 ■ 5264.200 ■ 5264.201 ■

5262.162 ■ 5262.163 ■ 5262.164 ■ 5262.165 ■ 5262.166 ■ 5262.167 ■

– – 5267.168 ■ 5267.169 ■ 5267.170 ■ 5267.171 ■

19.0 19.0 34.5 43.1 55.2 55.2

19.0 19.0 49.6 99.3 148.9 186.2

19.7 19.7 51.0 102.0 153,1 186.2

12.8 19.7 42.4 85.1 127.2 186.2

5.5 19.7 28.3 56.9 85.1 142.0

– – 35.2 56.2 84.5 1140.7

– – 15.5 30.7 46.2 76.9

19.7 19.7 19.7 19.7 19.7 41.4

15.9 15.9 15.9 15.9 15.9 15.9



Code

CF8M

WCB

WC6


2

✓

✓

✓


3

–

✓

✓


4

✓

✓

✓


5

–

✓

✓ Conventional design


Orifice J – Dimensions and Weights Valve Size 2 2 3 3 3 3

J J J J J J

3 3 4 4 4 4


J J J J J J

3 3 4 4 4 4

LWN 470.23

Flange Rating

Dimensions [inch]

Weight [lbs]


Inlet

Outlet

a

b

s

H

A

B

C

D

E

m

H

m

150 300 300L 600 900 1500

150 150 150 150 150 300

5 3 /8 5 3 /8 7 1/4 7 1/4 7 1/4 7 1/4

4 7 /8 4 7 /8 7 1/8 7 1/8 7 1/8 7 1/8

1 15/16 1 15/16 1 15/16 1 15/16 2 9/16 2 9/16

21 3/32 21 3/32 23 11/16 23 11/16 23 11/16 23 11/16

7 1/4 7 1/4 9 3/8 9 3/8 9 3/8 9 3/8

4 11/32 4 11/32 5 1/2 5 1/2 5 1/2 5 1/2

Ø 9/16 Ø 9/16 Ø 23/32 Ø 23/32 Ø 23/32 Ø 23/32

7 7/32 7 7/32 9 7/32 9 7/32 9 7/32 9 7/32

5 /8

98.3 98.3 171.3 171.3 220.9 220.9

23 23 25 3/16 25 3/16 25 3/16 25 3/16

106.4 106.4 183.4 183.4 233.0 233.0

Flange Rating

5 /8 31/32 31/32 31/32 31/32

Dimensions [mm]

Weight [kg]

Inlet

Outlet

a

b

s

H

A

B

150 300 300L 600 900 1500

150 150 150 150 150 300

137 137 184 184 184 184

124 124 181 181 181 181

49 49 49 49 65 65

536 536 602 602 602 602

184 184 238 238 238 238

110 110 140 140 140 140

C Ø Ø Ø Ø Ø Ø

14 14 18 18 18 18


D

E

m

H

m

184 184 234 234 234 234

16 16 25 25 25 25

44.6 44.6 77.7 77.7 100.2 100.2

585 585 640 640 640 640

48.4 48.4 83.2 83.2 105.7 105.7

25

Type 526

26

Flanged Safety Relief Valves · API Series Selection Chart – Orifice K

K

LWN 470.24

Flanged Safety Relief Valves · API Series Specifications – Orifice K

K

Orifice K – Specification Valve Size 3 3 3 3 3

K K K K K

4 4 4 6 6

Valve Size 3 3 3 3 3

K K K K K

Notes:

4 4 4 6 6 1 2

Flange Rating


Article No. CF8M

WC6

2


Inlet

Outlet

CF8M

WCB

WC6

-76° F 1

-21° F

100° F

450° F

800° F

800° F

1000° F

Conv.

Bellows

150 300 600 900 1500

150 150 150 150 300

5264.211 ■ 5264.212 ■ 5264.213 ■ 5264.214 ■ 5264.215 ■

5262.202 ■ 5262.203 ■ 5262.204 ■ 5262.205 ■ 5262.206 ■

– 5267.207 ■ 5267.208 ■ 5267.209 ■ 5267.210 ■

275 525 600 600 750

275 720 1440 2160 2220

285 740 1480 2220 2220

185 615 1235 1845 2220

80 410 825 1235 2060

– 510 815 1225 2040

– 225 445 670 1115

285 285 285 285 600

150 150 200 200 200

Flange Rating


Article No. CF8M

WC6

2


Inlet

Outlet

CF8M

WCB

WC6

-60°C 1

-29°C

38°C

232°C

427°C

427°C

538°C

Conv.

Bellows

150 300 600 900 1500

150 150 150 150 300

5264.211 ■ 5264.212 ■ 5264.213 ■ 5264.214 ■ 5264.215 ■

5262.202 ■ 5262.203 ■ 5262.204 ■ 5262.205 ■ 5262.206 ■

– 5267.207 ■ 5267.208 ■ 5267.209 ■ 5267.210 ■

19.0 36.2 41.4 41.4 51.7

19.0 49.6 99.3 148.9 153.1

19.7 51.0 102.0 153.1 153.1

12.8 42.4 85.1 127.2 153.1

5.5 28.3 56.9 85.1 142.0

– 35.2 56.2 84.5 140.7

– 15.5 30.7 46.2 76.9

19.7 19.7 19.7 19.7 41.4

10.3 10.3 13.8 13.8 13.8



Code

CF8M

WCB

WC6


2

✓

✓

✓


3

–

✓

✓


4

✓

✓

✓


5

–

✓

✓

Conventional design


Orifice K – Dimensions and Weights Valve Size 3K4 3K4 3 K 41 3 K 42 3 K 61 3 K 62 3K6

Valve Size 3K4 3K4 3 K 41 3 K 42 3 K 61 3 K 62 3K6

Flange Rating

Dimensions [inch]

Inlet

Outlet

a

b

s

H

A

B

150 300 600 600 900 900 1500

150 150 150 150 150 150 300

6 1/8 6 1/8 6 1/8 7 1/4 7 1/4 7 13/16 7 3 /4

6 3 /8 6 3 /8 6 3 /8 7 1/8 7 1/8 8 1/2 8 1/2

1 15/16 1 15/16 1 15/16 1 15/16 2 9/16 2 5 /8 2 9/16

23 11/16 23 11/16 23 11/16 23 11/16 23 11/16 26 27/32 26 27/32

9 3/8 9 3/8 9 3/8 9 3/8 9 3/8 10 15/16 10 15/16

5 1/2 5 1/2 5 1/2 5 1/2 5 1/2 6 5/16 6 5/16

Flange Rating


23 /32 23 /32 23 /32 23 /32 23 /32 23 /32 23 /32

D

E

m

H

m

31/32

154.5 154.5 154.5 171.3 220.9 281.1 281.1

25 3/16 25 3/16 25 3/16 25 3/16 25 3/16 26 27/32 26 27/32

166.8 166.8 166.8 183.4 233.0 295.7 295.7

31/32 31/32 31/32 31/32 31/32 31/32

Weight [kg]

Inlet

Outlet

a

b

s

H

A

B

150 300 600 600 900 900 1500

150 150 150 150 150 150 300

156 156 156 184 184 198 197

162 162 162 181 181 216 216

49 49 49 49 65 67 65

602 602 602 602 602 682 682

238 238 238 238 238 278 278

140 140 140 140 140 160 160

1 2

dimensions for WC6 material dimensions for CF8M and WCB material


18 18 18 18 18 18 18


8 3/32 8 3/32 8 3/32 9 7/32 9 7/32 11 11/32 11 9/32

Dimensions [mm]

Notes: LWN 470.25

Weight [lbs]


D

E

m

H

m

206 206 206 234 234 288 287

25 25 25 25 25 25 25

70.1 70.1 70.1 77.7 100.2 127.5 127.5

640 640 640 640 640 682 682

75.7 75.7 75.7 83.2 105.7 134.1 134.1 27

Type 526

28

Flanged Safety Relief Valves · API Series Selection Chart – Orifice L

L

LWN 470.26

Flanged Safety Relief Valves · API Series Specifications – Orifice L

L

Orifice L – Specification Valve Size 3 3 4 4 4 4

L L L L L L

4 4 6 6 6 6


L L L L L L

Notes:

4 4 6 6 6 6 1 2

Flange Rating


Article No. CF8M

WC6

2


Inlet

Outlet

CF8M

WCB

WC6

-76° F 1

-21° F

100° F

450° F

800° F

800° F

1000° F

Conv.

Bellows

150 300L 300 600 900 1500

150 150 150 150 150 150

5264.242 ■ 5264.243 ■ 5264.244 ■ 5264.245 ■ 5264.246 ■ –

5262.232 ■ 5262.233 ■ 5262.234 ■ 5262.235 ■ 5262.236 ■ 5262.237 ■

– – 5267.238 ■ 5267.239 ■ 5267.240 ■ 5267.241 ■

275 275 535 535 700 –

275 275 720 1000 1500 –

285 285 740 1000 1500 –

185 285 615 1000 1500 1500

80 285 410 825 1235 1500

– – 510 1000 1500 1500

– – 225 445 670 1115

285 285 285 285 285 285

100 100 170 170 170 170

Flange Rating


Article No. CF8M

WC6 2


Inlet

Outlet

CF8M

WCB

WC6

-60°C 1

-29°C

38°C

232°C

427°C

427°C

538°C

Conv.

Bellows

150 300L 300 600 900 1500

150 150 150 150 150 150

5264.242 ■ 5264.243 ■ 5264.244 ■ 5264.245 ■ 5264.246 ■ –

5262.232 ■ 5262.233 ■ 5262.234 ■ 5262.235 ■ 5262.236 ■ 5262.237 ■

– – 5267.238 ■ 5267.239 ■ 5267.240 ■ 5267.241 ■

19.0 19.0 36.9 36.9 48.3 –

19.0 19.0 49.6 68.9 103.4 –

19.7 19.7 51.0 68.9 103.4 –

12.8 19.7 42.4 68.9 103.4 103.4

5.5 19.7 28.3 56.9 85.1 103.4

– – 35.2 68.9 103.4 103.4

– – 15.5 30.7 46.2 76.9

19.7 19.7 19,7 19.7 19.7 19.7

6.9 6.9 11.7 11.7 11.7 11.7



Code

CF8M

WCB

WC6


2

✓

✓

✓


3

–

✓

✓


4

✓

✓

✓


5

–

✓

✓

Conventional design


Orifice L – Dimensions and Weights Valve Size 3L4 3L4 4L6 4 L 61 4 L 62 4L6 4L6

Valve Size 3L4 3L4 4L6 4 L 61 4 L 62 4L6 4L6

Flange Rating

Dimensions [inch]

Inlet

Outlet

a

b

s

H

A

B

150 300L 300 600 600 900 1500

150 150 150 150 150 150 150

6 1/8 6 1/8 7 1/16 7 1/16 7 1/8 7 3 /4 7 3 /4

6 1/2 6 1/2 7 1/8 8 8 8 3 /4 8 3 /4

1 15/16 1 15/16 1 15/16 2 1 /4 2 5/16 2 13/16 2 13/16

23 11/16 23 11/16 26 17/32 26 17/32 26 17/32 26 17/32 26 17/32

9 3/8 9 3/8 10 15/16 10 15/16 10 15/16 10 15/16 10 15/16

5 1/2 5 1/2 6 5/16 6 5/16 6 5/16 6 5/16 6 5/16

Flange Rating


23 /32 23 /32 23 /32 23 /32 23 /32 23 /32 23 /32

D

E

m

H

m

31/32

154.5 154.5 247.1 269.0 269.0 295.6 281.1

25 3/16 25 3/16 27 13/16 27 13/16 27 13/16 27 13/16 27 13/16

166.8 166.8 261.7 283.6 283.6 310.2 295.7

31/32 31/32 31/32 31/32 31/32 31/32

Weight [kg]

Inlet

Outlet

a

b

s

H

A

B

150 300L 300 600 600 900 1500

150 150 150 150 150 150 150

156 156 179 179 181 197 197

165 165 181 203 203 222 222

49 49 49 57 59 72 72

602 602 674 674 674 674 674

238 238 278 278 278 278 278

140 140 160 160 160 160 160

2

dimensions for CF8M and WCB material dimensions for WC6 material


18 18 18 18 18 18 18


8 3/32 8 3/32 10 5/16 10 5/16 10 3/8 11 11

Dimensions [mm]

1

LWN 470.27

Weight [lbs]


D

E

m

H

m

206 206 262 262 264 280 280

25 25 25 25 25 25 25

30.6 30.6 44.6 44.6 44.6 62.2 62.2

450 450 562 563 562 563 563

33.1 33.1 48.4 48.4 48.4 65.3 65.3 29

Type 526

30

Flanged Safety Relief Valves · API Series Selection Chart – Orifice M

M

LWN 470.28

Flanged Safety Relief Valves · API Series Specifications – Orifice M

M

Orifice M – Specification Valve Size 4 4 4 4

M M M M

6 6 6 6

Valve Size 4 4 4 4

M M M M

Notes:

6 6 6 6 1 2

Flange Rating


Article No. CF8M

Inlet

Outlet

CF8M

150 300 600 900

150 150 150 150

5264.587 ■ 5264.588 ■ 5264.589 ■ –

Flange Rating

WCB

WC6

5262.580 ■ – 5262.581 ■ 5267.584 ■ 5262.582 ■ 5267.585 ■ 5262.583 ■ 5267.586 ■

-21° F

100° F

450° F

800° F

800° F

1000° F

Conv.

Bellows

275 525 600 –

275 720 1000 –

285 740 1100 –

185 615 1100 1100

80 410 825 1100

– 510 1015 1100

– 225 445 670

285 285 285 285

80 160 160 160


CF8M

Outlet

CF8M

150 300 600 900

150 150 150 150

5264.587 ■ 5264.588 ■ 5264.589 ■ –

WCB

WC6

5262.580 ■ – 5262.581 ■ 5267.584 ■ 5262.582 ■ 5267.585 ■ 5262.583 ■ 5267.586 ■


-76° F 1

Article No.

Inlet

WC6

2

WC6

2


-60°C 1

-29°C

38°C

232°C

427°C

427°C

538°C

Conv.

Bellows

19.0 36.2 41.4 –

19.0 49.6 68.9 –

19.7 51.0 75.8 –

12.8 42.4 75.8 75.8

5.5 28.3 56.9 75.8

– 35.2 70.0 75.8

– 15.5 30.7 46.2

19.7 19.7 19.7 19.7

5.5 11.0 11.0 11.0



Code

CF8M

WCB

WC6


2

✓

✓

✓


3

–

✓

✓


4

✓

✓

✓


5

–

✓

✓

Conventional design


Orifice M – Dimensions and Weights Valve Size 4 4 4 4

M M M M

6 6 6 6

Valve Size 4 4 4 4

M M M M

6 6 6 6

LWN 470.29

Flange Rating

Dimensions [inch]

Weight [lbs]

Inlet

Outlet

a

b

s

H

A

B

150 300 600 900

150 150 150 150

7 7 7 7 3 /4

7 1/4 7 1/4 8 8 3 /4

1 7 /8 1 7 /8 2 3/16 2 3 /4

26 17/32 26 17/32 26 17/32 26 17/32

10 15/16 10 15/16 10 15/16 10 15/16

6 5/16 6 5/16 6 5/16 6 5/16

Flange Rating

C Ø Ø Ø Ø

23 /32 23 /32 23 /32 23 /32

D

E

m

H

m

10 1/4 10 1/4 10 1/4 11

31/32

247.1 247.1 269.0 295.6

27 13/16 27 13/16 27 13/16 27 13/16

261.7 261.7 283.6 310.2

31/32 31/32 31/32

Dimensions [mm]

Weight [kg]

Inlet

Outlet

a

b

s

H

A

B

150 300 600 900

150 150 150 150

178 178 178 197

184 184 203 222

48 48 56 72

674 674 674 674

278 278 278 278

160 160 160 160

C Ø Ø Ø Ø

18 18 18 18



D

E

m

H

m

260 260 260 280

25 25 25 25

112.1 112.1 122.0 134.1

707 707 707 707

118.7 118.7 128.6 140.7

31

Type 526

32

Flanged Safety Relief Valves · API Series Selection Chart – Orifice N

N

LWN 470.30

Flanged Safety Relief Valves · API Series Specifications – Orifice N

N

Orifice N – Specification Valve Size 4 4 4 4

N N N N

6 6 6 6

Valve Size 4 4 4 4

N N N N

Notes:

6 6 6 6 1 2

Flange Rating


Article No. CF8M

Inlet

Outlet

CF8M

150 300 600 900

150 150 150 150

5264.597 ■ 5264.598 ■ 5264.599 ■ –

Flange Rating

WCB

WC6

5262.590 ■ – 5262.591 ■ 5267.594 ■ 5262.592 ■ 5267.595 ■ 5262.593 ■ 5267.596 ■

-21° F

100° F

450° F

800° F

800° F

1000° F

Conv.

Bellows

275 450 500 –

275 720 1000 –

285 740 1000 –

185 615 1000 1000

80 410 825 1000

– 510 1000 1000

– 225 445 670

285 285 285 285

80 160 160 160


CF8M

Outlet

CF8M

150 300 600 900

150 150 150 150

5264.597 ■ 5264.598 ■ 5264.599 ■ –

WCB

WC6

5262.590 ■ – 5262.591 ■ 5267.594 ■ 5262.592 ■ 5267.595 ■ 5262.593 ■ 5267.596 ■


-76° F 1

Article No.

Inlet

WC6

2

WC6

2


-60°C 1

-29°C

38°C

232°C

427°C

427°C

538°C

Conv.

Bellows

19.0 31.0 34.5 –

19.0 49.6 68.9 –

19.7 51.0 68.9 –

12.8 42.4 68.9 68.9

5.5 28.3 56.9 68.9

– 35.2 68.9 68.9

– 15.5 30.7 46.2

19.7 19.7 19.7 19.7

5.5 11.0 11.0 11.0



Code

CF8M

WCB

WC6


2

✓

✓

✓


3

–

✓

✓


4

✓

✓

✓


5

–

✓

✓

Conventional design


Orifice N – Dimensions and Weights Valve Size 4 4 4 4

N N N N

6 6 6 6

Valve Size 4 4 4 4

N N N N

6 6 6 6

LWN 470.31

Flange Rating

Dimensions [inch]

Weight [lbs]

Inlet

Outlet

a

b

s

H

A

B

150 300 600 900

150 150 150 150

7 3 /4 7 3 /4 7 3 /4 7 3 /4

8 1/4 8 1/4 8 3 /4 8 3 /4

1 7 /8 1 7 /8 2 3 /4 2 3 /4

26 17/32 26 17/32 26 17/32 26 17/32

10 15/16 10 15/16 10 15/16 10 15/16

6 5/16 6 5/16 6 5/16 6 5/16

Flange Rating

Ø Ø Ø Ø

C

D

E

m

H

m

23 /32

11 11 11 11

31/32

283.5 283.5 295.6 295.6

27 13/16 27 13/16 27 13/16 27 13/16

298.1 298.1 310.2 310.2

23 /32 23 /32 23 /32

31/32 31/32 31/32

Dimensions [mm]

Weight [kg]

Inlet

Outlet

a

b

s

H

A

B

150 300 600 900

150 150 150 150

197 197 197 197

210 210 222 222

48 48 72 72

674 674 674 674

278 278 278 278

160 160 160 160


C Ø Ø Ø Ø

18 18 18 18


D

E

m

H

m

280 280 280 280

25 25 25 25

128.6 128.6 134.1 134.1

707 707 707 707

135.2 135.2 140.7 140.7

33

Type 526

34

Flanged Safety Relief Valves · API Series Selection Chart – Orifice P

P

LWN 470.32

Flanged Safety Relief Valves · API Series Specifications – Orifice P

P

Orifice P – Specification Valve Size 4 4 4 4 4

P P P P P

6 6 6 6 6


P P P P P

Notes:

6 6 6 6 6 1 2

Flange Rating


Article No. CF8M

Inlet

Outlet

CF8M

150 300L 300 600 900

150 150 150 150 150

5264.653 ■ 5264.654 ■ 5264.655 ■ 5264.656 ■ –

Flange Rating

WCB

WC6

5262.645 ■ – 5262.646 ■ – 5262.647 ■ 5267.650 ■ 5262.648 ■ 5267.651 ■ 5262.649 ■ 5267.652 ■

-76° F 1

-21° F

100° F

450° F

800° F

175 175 300 480 –

275 275 525 1000 –

285 285 525 1000 –

185 28 525 1000 1000

80 285 410 825 1000

CF8M

Inlet

Outlet

CF8M

150 300L 300 600 900

150 150 150 150 150

5264.653 ■ 5264.654 ■ 5264.655 ■ 5264.656 ■ –

WCB

WC6

5262.645 ■ – 5262.646 ■ – 5262.647 ■ 5267.650 ■ 5264.648 ■ 5267.651 ■ 5262.649 ■ 5267.652 ■

800° F 1000° F – – 510 1000 1000


Article No.

WC6

2

– – 225 445 670

WC6

2


Bellows

285 285 285 285 285

80 80 150 150 150


-60°C 1

-29°C

38°C

232°C

427°C

427°C

538°C

Conv.

Bellows

12.1 12.1 20.7 33.1 –

19.0 19.0 36.2 68.9 –

19.7 19.7 36.2 68.9 –

12.8 19.7 36.2 68.9 68.9

5.5 19.7 28.3 56.9 68.9

– – 35.2 68.9 68.9

– – 15.5 30.7 46.2

19.7 19.7 19.7 19.7 19.7

5.5 5.5 10.3 10.3 10.3



Code

CF8M

WCB

WC6


2

✓

✓

✓


3

–

✓

✓


4

✓

✓

✓


5

–

✓

✓

Conventional design


Orifice P – Dimensions and Weights Valve Size 4 4 4 4 4

P P P P P

6 6 6 6 6


P P P P P

6 6 6 6 6

LWN 470.33

Flange Rating

Dimensions [inch]

Weight [lbs]

Inlet

Outlet

a

b

s

H

A

B

150 300L 300 600 900

150 150 150 150 150

7 1/8 7 1/8 8 7 /8 8 7 /8 8 7 /8

9 9 10 10 10

1 7 /8 1 7 /8 2 7/16 2 7/16 2 7/16

26 17/32 26 17/32 315/32 315/32 315/32

10 15/16 10 15/16 14 9/16 14 9/16 14 9/16

6 5/16 6 5/16 8 9/32 8 9/32 8 9/32

Flange Rating

C Ø Ø Ø Ø Ø

23 /32 23 /32 23 /32 23 /32 23 /32

D

E

m

H

m

10 5/16 10 5/16 12 1/16 12 1/16 12 1/16

31/32

237.4 237.4 361.6 361.6 361.6

27 13/16 27 13/16 27 13/16 27 13/16 27 13/16

253.1 253.1 379.2 379.2 379.2

31/32 31/32 31/32 31/32

Dimensions [mm]

Weight [kg]

Inlet

Outlet

a

b

s

H

A

B

150 300L 300 600 900

150 150 150 150 150

181 181 225 225 225

229 229 254 254 254

48 48 62 62 62

674 674 791 791 791

278 278 370 370 370

160 160 210 210 210

C Ø Ø Ø Ø Ø

18 18 18 18 18



D

E

m

H

m

262 262 306 306 306

25 25 25 25 25

107.7 107.7 164.0 164.0 164.0

707 707 850 850 850

114.8 114.8 172.0 172.0 172.0

35

Type 526

36

Flanged Safety Relief Valves · API Series Selection Chart – Orifice Q

Q

LWN 470.34

Flanged Safety Relief Valves · API Series Specifications – Orifice Q

Q

Orifice Q – Specification Valve Size 6Q8 6Q8 6Q8

Valve Size 6Q8 6Q8 6Q8 Notes:

1 2

Flange Rating Inlet

Outlet

150 300 600

150 150 150

CF8M CF8M WCB WC6 -76° F 1 5264.662 ■ 5262.657 ■ – 165 5264.663 ■ 5262.658 ■ 5267.660 ■ 250 5264.664 ■ 5262.659 ■ 5267.661 ■ 300

Flange Rating Inlet

Outlet

150 300 600

150 150 150


Article No.


-21° F

100° F

450° F

800° F

800° F

1000° F

Conv.

Bellows

165 300 600

165 300 600

165 300 600

80 300 600

– 165 600

– 165 445

115 115 115

70 115 115


Article No. CF8M CF8M WCB WC6 5264.662 ■ 5262.657 ■ – 5264.663 ■ 5262.658 ■ 5267.660 ■ 5264.664 ■ 5262.659 ■ 5267.661 ■

WC6

2

WC6

2


-60°C 1

-29°C

38°C

232°C

427°C

427°C

538°C

Conv.

Bellows

11.4 17.2 20.7

11.4 20.7 41.4

11.4 20.7 41.4

11.4 20.7 41.4

5.5 20.7 41.4

– 11.4 41.4

– 11.4 30.7

7.9 7.9 7.9

4.8 7.9 7.9



Code

CF8M

WCB

WC6


2

✓

✓

✓


3

–

✓

✓


4

✓

✓

✓


5

–

✓

✓

Conventional design


Orifice Q – Dimensions and Weights Valve Size 6Q8 6Q8 6Q8

Valve Size 6Q8 6Q8 6Q8

LWN 470.35

Flange Rating

Dimensions [inch]

Weight [lbs]

Inlet

Outlet

a

b

s

H

A

B

150 300 600

150 150 150

9 7/16 9 7/16 9 7/16

9 1/2 9 1/2 9 1/2

2 11/16 2 11/16 2 11/16

32 5/32 32 5/32 32 5/32

14 9/16 14 9/16 14 9/16

8 9/32 8 9/32 8 9/32

Flange Rating

C Ø Ø Ø

23 /32 23 /32 23 /32


D

E

m

H

m

13 5/8 13 5/8 13 5/8

31/32

487.2 487.2 487.2

35 9/32 35 9/32 35 9/32

507.0 507.0 507.0

31/32 31/32

Dimensions [mm]

Weight [kg]


Inlet

Outlet

a

b

s

H

A

B

C

D

E

m

H

m

150 300 600

150 150 150

240 240 240

241 241 241

68 68 68

817 817 817

370 370 370

210 210 210

Ø 18 Ø 18 Ø 18

346 346 346

25 25 25

221.0 221.0 221.0

897 897 897

230.0 230.0 230.0

37

Type 526

38

Flanged Safety Relief Valves · API Series Selection Chart – Orifice R

R

LWN 470.36

Flanged Safety Relief Valves · API Series Specifications – Orifice R

R

Orifice R – Specification Valve Size 6R8 6R8 6 R 10 6 R 10

Valve Size 6R8 6R8 6 R 10 6 R 10 Notes:

1 2

Flange Rating Inlet

Outlet

150 300L 300 600

150 150 150 150

CF8M CF8M 5264.671 ■ 5264.672 ■ 5264.673 ■ 5264.674 ■

Flange Rating Inlet

Outlet

150 300L 300 600

150 150 150 150


Article No. WCB WC6 -76° F 1 5262.665 ■ – 55 5262.666 ■ 5267.669 ■ 55 5262.667 ■ – 150 5262.668 ■ 5267.670 ■ 200

100° F

450° F

800° F

800° F

1000° F

Conv.

Bellows

100 100 230 300

100 100 230 300

100 100 230 300

80 100 230 300

– 100 – 300

– 100 – 300

60 60 100 100

60 60 100 100


CF8M WCB WC6 5262.665 ■ – 5262.666 ■ 5267.669 ■ 5262.667 ■ – 5262.668 ■ 5267.670 ■


-21° F

Article No. CF8M 5264.671 ■ 5264.672 ■ 5264.673 ■ 5264.674 ■

WC6

2

WC6

2


-60°C 1

-29°C

38°C

232°C

427°C

427°C

538°C

Conv.

Bellows

3.8 3.8 10.3 13.8

6.9 6.9 15.9 20.7

6.9 6.9 15.9 20.7

6.9 6.9 15.9 20.7

5.5 6.9 15.9 20.7

– 6.9 – 20.7

– 6.9 – 20.7

4.1 4.1 6.9 6.9

4.1 4.1 6.9 6.9



Code

CF8M

WCB

WC6


2

✓

✓

✓


3

–

✓

✓


4

✓

✓

✓


5

–

✓

✓

Conventional design


Orifice R – Dimensions and Weights Valve Size 6R8 6R8 6 R 10 6 R 10

Valve Size 6R8 6R8 6 R 10 6 R 10

LWN 470.37

Flange Rating

Dimensions [inch]

Weight [lbs]

Inlet

Outlet

a

b

s

H

A

B

150 300L 300 600

150 150 150 150

9 7/16 9 7/16 9 7/16 9 7/16

9 1/2 9 1/2 10 1/2 10 1/2

2 11/16 2 11/16 2 3 /4 2 3 /4

32 5/32 32 5/32 44 7/32 44 7/32

14 9/16 14 9/16 18 1/2 18 1/2

8 9/32 8 9/32 5 29/32 5 29/32

Flange Rating

C Ø Ø Ø Ø

23 /32 23 /32 23 /32 23 /32

D

E

m

H

m

13 5/8 13 5/8 18 1/8 18 1/8

31/32

487.2 487.2 611.0 611.0

35 9/32 35 9/32 44 7/32 44 7/32

507.0 507.0 635.2 635.2

31/32 31/32 31/32

Dimensions [mm]

Weight [kg]

Inlet

Outlet

a

b

s

H

A

B

150 300L 300 600

150 150 150 150

240 240 240 240

241 241 267 267

68 68 70 70

817 817 1123 1123

370 370 470 470

210 210 150 150

C Ø Ø Ø Ø

18 18 18 18



D

E

m

H

m

346 346 460 460

25 25 25 25

221.0 221.0 277.0 277.0

897.0 897.0 1123 1123

230.0 230.0 288.0 288.0

39

Type 526

40

Flanged Safety Relief Valves · API Series Selection Chart – Orifice T

T

LWN 470.38

Flanged Safety Relief Valves · API Series Specifications – Orifice T

T

Orifice T – Specification Valve Size 8 T 10 8 T 10

Valve Size 8 T 10 8 T 10 Notes:

1 2

Flange Rating Inlet

Outlet

150 300

150 150

CF8M CF8M WCB WC6 -76° F 1 5264.678 ■ 5262.675 ■ – 50 5264.679 ■ 5262.676 ■ 5267.677 ■ 65

Flange Rating Inlet

Outlet

150 300

150 150


Article No.


-21° F

100° F

450° F

800° F

800° F

1000° F

Conv.

Bellows

65 120

65 300

65 300

65 300

– 300

– 225

30 100

30 100


Article No. CF8M CF8M WCB WC6 -60°C 1 5264.678 ■ 5262.675 ■ – 3.4 5264.679 ■ 5262.676 ■ 5 2 6 7 . 6 77■ 4.5

WC6

2

WC6

2


-29°C

38°C

232°C

427°C

427°C

538°C

Conv.

Bellows

4.5 8.3

4.5 20.7

4.5 20.7

4.5 20.7

– 20.7

– 15.5

2.1 6.9

2.1 6.9



Code

CF8M

WCB

WC6


2

✓

✓

✓


3

–

✓

✓


4

✓

✓

✓


5

–

✓

✓

Conventional design


Orifice T – Dimensions and Weights Valve Size 8 T 10 8 T 10

Valve Size 8 T 10 8 T 10

LWN 470.39

Flange Rating

Dimensions [inch]

Weight [lbs]

Inlet

Outlet

a

b

s

H

A

B

150 300

150 150

10 7/8 10 7/8

11 11

27/16 27/16

44 7/32 44 7/32

18 1/2 18 1/2

5 29/32 5 29/32

Flange Rating

C Ø Ø

23 /32 23 /32


D

E

m

H

m

19 9/16 19 9/16

31/32

633.0 633.0

44 7/32 44 7/32

657.2 657.2

31/32

Dimensions [mm]

Weight [kg]


Inlet

Outlet

a

b

s

H

A

B

C

D

E

m

H

m

150 300

150 150

276 276

279 279

62 62

1123 1123

470 470

150 150

Ø 18 Ø 18

497 497

25 25

287.0 287.0

1123 1123

298.0 298.0

41

Type 526

Flanged Safety Relief Valves · API Series Accessories and Options · Caps and Levers

Accessories and Options Caps and Levers Available Lever Designs Designation

Materials subassembly Item 40

Short Designation

Type 5262 / Type 5267 Item

Cap screwed Standard Plain lever Packed lever

Special

Test Gag

Cap H2 42

Cap bolted Bolted lifting device

H2 H3 H4

H1 H6

Cap H2: Option Code J69 Packed l. H4: Option Code J70

1 2 3a 3b 3c 4 / 1.4 1.5 6 / 1.6 1.7 1.8 1.9 1.9 10 / 1.10 1.10 1.11 12 13 14 20 21 22 23 24 26 27 93 93.5

Component

Cap H2 + H1

Plain Lever H3

Packed Lever H4 + H6

Lever Cover Cap Spacer Hex Screw O-ring Shaft / Bolt Lifting Fork Lever Washer Nut O-ring Bushing Retaining Clip Nut Support Ring Spindle Cap Pin Retaining Clip Flange Flange Plug Seal Seal Wire Stud Nut Test Gag Washer

– Carbon Steel – – – – – – – – – – – – – – – – Carbon Steel Carbon Steel – Plastic 316SS B7 2H 316SS Fiber

Gr. 60-40-18 – – B7 – Steel – Carbon Steel – – – – Carbon Steel – – Carbon Steel 316SS 316SS – – Plastic Plastic 316SS – – – –

Gr. 60-40-18 – 316L – Viton® Steel Carbon Steel Carbon Steel Carbon Steel 2H Viton® – Carbon Steel – Carbon Steel Carbon Steel 316SS 316SS Carbon Steel Carbon Steel – Plastic 316SS B7 2H 316SS Fiber

Type 5264 Cap Packed Lever H2 + H1 H4 + H6 – 316L – – – – – – – – – – – – – – – – 316L 316L – Plastic 316SS B8M 8M 316SS Fiber

CF8M – 316L – Viton® 316L 316L 316SS 316SS 8M – Graphite – 316L 316SS 316L 316SS 316SS 316L 316L – Plastic 316SS B8M 8M 316SS Fiber

Plain lever H3 LWN 470.40

Flanged Safety Relief Valves · API Series Accessories and Options · Caps and Levers

BLOCKED. Remove after testing!

Packed lever H4

Test gag

Bolted Cap H1

Bolted lifting device H6

LWN 470.41

43

Type 526

Flanged Safety Relief Valves · API Series Accessories and Options · Balanced Bellows

Balanced Bellows

Application Bellows protect the guides, moving part s and the spring from dirt, corrosion, impurities or temperature to guarantee the proper function of the valve. Additionally they provide for back pressure compensation. Design Type 526 with balanced bellows is provided with a bonnet spacer to house the bellows. The spacer serves for cooling and shields the bellows against turbulences during discharge to avoid vibration and to guarantee longer lifetime.

Minimum Set Pressures

Materials and Limits of Application

Type 526 Balanced Bellows Design Bellows material Bellows joint material Temperature limits

Minimum set pressure Orifice D E F G H J K L M N P Q R T

Steam / Air [psig] [bar] 51 3.5 51 3.5 29 2.0 46 3.2 41 2.8 51 3.5 32 2.2 51 3.5 38 2.6 26 1.8 32 2.2 19 1.3 15 1.0 17 1.2

Water [psig] [bar] 51 3.5 51 3.5 29 2.0 41 2.8 41 2.8 73 5.0 36 2.5 51 3.5 32 2.2 26 1.8 32 2.2 33 2.3 20 1.4 36 2.5

Built up back pressure limit 1

Standard

Hastelloy®

Inconel®

316L 316L

Hastelloy® C Hastelloy® C up to 1000 °F

Inconel® Inconel®

max. 35 % of set pressure, not to exceed max. bellows back pressure limit Option Codes

Closed bonnet

J78

J78 + S15 (Hastelloy® )

J78 + S15 (Inconel® )

Open bonnet

J68



High temperature equipment (Type 5267 only)

J88



Note :

The so called built up back pressure limit defines the limit for which the proper function of the pressure relief valve is ensured. The back pressure limits in the API 526 refer only to the static stability of the bellows design and do not consider the influence of the backpressure on the opening and closing of a pressure relief valve.

1

Conversion kits are available for an easy change from a conventional design to a balanced bellows design. Conversion kits contain all necessary

44

parts which must be replaced (bellows, spacer, spindle and gaskets). Please refer to page 54 “Spare Parts”.

LWN 470.42

Flanged Safety Relief Valves · API Series Accessories and Options · Metal Seat

Metal Seat

The LESER metal seats (disc and nozzle) are lapped to optical flatness to ensure a tight shut off. LESER safety relief valves are supplied with a standard leak tightness according to API 527. Type 5262 / Type 5267 Standard material for the disc is a hardened stainless steel. The combination of the hardened disc material with the stainless steel seat material (316L or 316L stellited) provides for improved wear resistance and longer product life. Disc in 316L material is available on request. Type 5264 Disc and seat are provided in 316L material for highest corrosion re s i stance. In addition to that the disc is stellited as a standard. Any other material which is available from bar stock can be supplied as well (e.g. Hastelloy®, Monel®, Alloy20,…).

Metal seat

Stellited sealing surfaces

Disc Materials subassembly Item 7 Item

Part Name

Type 5262 / 5267 Body Material: WCB/ WC6

Type 5264 Body Material: CF8M

1

Disc

Hardened stainless steel hardness 40 - 50 HRC

316L stellited hardness 40 - 45 HRC

2 3 57 66

Lifting aid Retaining clip Balls Plug screw

316L 316L Stainless steel Stainless steel

316L 316L Stainless steel Stainless steel

Nozzle Materials (Item 5)

Stellited sealing surfaces For high temperature service above 842 °F, or applications with abrasive fluids wear resistant sealing surfaces are recommended. The sealing surfaces of stainless steel discs or nozzles can be stellited by build-up welding. The minimum thickness of the stellite is 0,06 inch. In addition to the corrosion resistance, the stellited surface also offers a high resistance to impact and sudden changes in temperature.

Flange Class

Type 5262 Body Material: WCB

Type 5267 Body Material: WC6

Type 5264 Body Material: CF8M

All 316L stainless steel discs and many nozzles are stellited as a standard!

150 – 300 600 900 – 2500

316L 316L stellited 316L stellited

316L stellited 316L stellited 316L stellited

316L 316L 316L stellited

Please refer to pages 52/53 “Spare Parts”.

LWN 470.43

45

Type 526

Flanged Safety Relief Valves · API Series Accessories and Options · Soft Seal

Soft Seal O-Ring Disc Disc with Sealing Ring Application Type 526 is provided with an optional soft seal disc for ● superior tightness ● maintained tightness close to the set pressure

Features and Benefits two designs with o-ring or sealing ring for extended application range ● minimized leakage and product loss ● large selection of soft seal materials ● simple replacement of soft seal ● standard ARP o-ring sizes ● one standard durometer per o-ring material ● reduced maintenance costs ●

Design and Availability1 Orifice D through T

For temperature limits and medium resistance refer to the soft seal selection table.

Disc Materials subassembly Item 7 Item

Part Name

Material

1

Disc

316L

2

Retainer

316L

3

Soft seal

See soft seal selection table

4

Nut

8M

57

Balls

Stainless steel

66

Plug screw

Stainless steel

Code letter 1

O-ring disc Note:

46

Code letter: Please refer to soft seal selection table

Code letter 1

Disc with Sealing Ring

1

Disc with Sealing Ring For applications, where the increased tightness of a soft seat seal is required but the temperature is too low or too high for an o-ring disc, a disc with an inserted sealing ring is the solution.

LWN 470.44

Flanged Safety Relief Valves · API Series Accessories and Options · Soft Seal Selection

Soft Seal Selection Abbrevation ASTM 1418

Designation Trade name

CR

Neoprene® (Chloroprene)

K

NBR

Buna - N® (Nitrile-Butadiene)

EPDM

Buna - EP® (Ethylene-Propylene Diene)

FPM (FKM)

Viton® (Fluorocarbon)

L

J23

-4

-20

FFKM

Kalrez ® (Perfluoro)

C

J20

32

SP

VESPEL SP-1® 3 (Polyimide)

T

J49

PCTFE

Kel-F® (Polychlorotrifluoroethylene)

G

PTFE

Teflon® (Polytetrafluoroethylene)

A

Tmin Code- Option letter1 Code

Application 2 [ °F]

[ °C]

[ °F]

[ °C]

J21

-40

-40

212

100

Paraffin oil, silicone oil and grease, water and waterbased solvents, refrigerants, ozone

N

J30

-13

-25

230

110

Hydraulic oil, vegetable and animal grease and oil

D

J22

-49

-45

302

150

Hot water and superheated steam up to 302°F, several organic and inorganic acids, silicone oil and grease, FDA compliant

356

180

For high temperature service (no superheated steam), mineral oil and grease, silicone oil and grease, vegetable and animal grease and oil, ozone, FDA compliant compound available on request

0

482

250

Nearly all chemicals, standard compound is Kalrez® 6375 with steam resistance, FDA compliant compound available on request

-454

-270

572

300

High temperature and high pressure applications (no steam), for chemical resistance refer to manufacturers guide

J48

-454

-270

400

204

Cryogenic and refrigeration application, flammable media, gaseous oxygene application up to 725 psig at 140 ºF

J44

-300

-184

302

150

Nearly all chemicals

Other Notes:

Tmax

Please contact factory

The code letters will be stamped on the retainer (Item 2). For soft seal materials other than listed the code letter X will be used. 2 Pressure and temperature service must be considered in any case. Chemical resistance depends on O-ring manufacturer information. LESER can not take any warranty. 3 Up to orifice G only. 1

Set Pressure Limits O-ring disc

Set Pressure and Size Limits Sealing ring disc

Set Pressure min. max.

Orifice

Pressure Range

[psig] [bar] [psig] [bar] D

4

0.3

1480

102

E

4

0.3

1480

102

min.

Material

Size

[bar]

[psig]

[bar]

VESPEL SP-1®

150

10

5800

400

D–G

Kel-F®

15

1

4350

300

D–T

Teflon®

15

1

145

10

D–T

F

4

0.3

1480

102

G

4

0.3

1480

102

H

4

0.3

1480

102

J

4

0.3

1480

102

K

4

0.3

1480

102

L

4

0.3

1100

75.8

M

4

0.3

1100

75.8

N

4

0.3

1000

68.9 68.9

Buna-N®, Teflon®, Viton®, VESPEL SP-1®, Neoprene®, Kalrez®

Registered Trademarks

P

4

0.3

1000

Q

4

0.3

600

41.3

Buna EP®

R

4

0.3

300

20.6

Kel-F®

T

4

0.3

300

20.6

LWN 470.45

max.

[psig]

Company DuPont Bayer

Conversion It is possible to change a standard disc into a soft seal design easily without changing any other part of the valve (single trim and same spring table). Please refer to page 52/53 Spare Parts.

3M

47

Type 526

Flanged Safety Relief Valves · API Series Accessories and Options · Heating Jacket

Heating Jacket

Application Safety valves in systems to be protected from media which are viscous, sticky, or have a tendency to crystallize out of solution can be fitted with a fabricated heating jacket. The position of the heating connections is shown in figure 1 and 2. Balanced Bellows Design For safety valves with balanced bellows, the bonnet spacer required to house the bellows is fitted with an additional heating jacket. Both heating jackets are joined by a tubing. The position of the heating connections is shown in the figure 3.

Specifications of the Heating Jacket The operating data for the heating jacket are shown on a separate name plate. Operating Pressure

Valve Size

Operating Temperatures

pmax

Tmax

[psig]

[bar]

[°F]

[°C]

1” to 2”

260

18

572°

300°

2 1/2” to 4”

160

11

572°

300°

Available heating connections Connection

Option Code

Lap joint flanges

S01 + H32

Couplings FNPT

S01 + H30

1. Heating Jacket with couplings

48

Lap joint flanges Flanged heating connections are supplied as lap joint flanges for better alignment of the flange connection.

2. Heating Jacket with flanges

3. Heating Jacket for balanced bellows design

LWN 470.46

Flanged Safety Relief Valves · API Series Accessories and Options · Lift Indicator

Lift Indicator (proximity switch)

Lift indicators are an important component for automation. They are used to monitor operating status. As an option, pressure relief valves can be provided with an inductive proximity switch. The lift indicator will indicate an opening of the pressure relief valve when the vessel pressure has increased so that the valve opens with a “pop”. LESER provides DC proximity switches type “N” using two-wire technology. These intrinsically safe proximity switches can be used in explosion hazard area zone 0. Other types of switches can be used as well. The lift indicator option is available only in combination with the packed lever H4 either with or without pro x i m i t y switch. The connection size is M18 x 1.

LWN 470.47

Option

Option Code

Lifting device H4 with connection for lift indicator M18 x 1

J39

Lifting device H4 with connection for lift indicator M18 x 1 including proximity switch type PEPPERL + FUCHS NJ5-18GK-N (5 V to 25 V d.c.)

J93

49

Type 526

Flanged Safety Relief Valves · API Series Accessories and Options · DIN Flanges

DIN Flanges

Type 526 flanges can be drilled according to DIN EN 1092-1 / DIN 2501. The following table shows the availability for the different orificies including the option codes (H10 – H52) for inlet and outlet flanges.

Explanations: White boxes with option code: connection is available ● Gray boxes without option code: connection is not available ● DIN EN 1092-1: for flange classes up to PN 100 ● DIN 2501: for flange classes PN 160 and higher ●

Flanges according to DIN EN 1092-1 / DIN 2501 Standard Valve Size and Class Orifice

D

E

F

G

H

J

K

50

Inlet NPS

Outlet

Valve Code

Flange Drillings according to DIN EN 1092-1 / DIN 2501 Inlet

Dimensions

Outlet

Standard NPS Material PN PN PN PN PN PN PN PN PN PN PN PN PN PN flange [inch] class [inch] WCB WC6 CF8M 10 16 25 40 63 100 160 250 320 400 10 16 25 40 1 300 2 002 006 011 H47 1 600 2 003 007 012 H11 H15 1 1/2 1500 2 004 008 013 H11 H12 1 1/2 2500 3 005 009 014 H13 1 300 2 016 020 025 H47 1 600 2 017 021 026 H11 H15 1 1/2 1500 2 018 022 027 H11 H12 1 1/2 2500 3 019 023 028 H13 1 1/2 300L 2 030 – 040 H47 1 1/2 300 2 031 035 041 H47 H15 1 1/2 1500 3 033 037 043 H11 H12 1 1/2 2500 3 034 038 044 H13 1 1/2 300L 3 046 – 111 H47 1 1/2 300 3 047 052 112 H47 1 1/2 600 3 048 053 113 H11 H15 1 1/2 900 3 049 054 114 2 1500 3 050 055 115 H12 H13 2 2500 3 051 056 116 H14 1 1/2 300L 3 143 – 153 2 300 3 144 148 154 H47 2 600 3 – 149 – H10 H15 2 600 3 145 – 155 2 900 3 146 150 156 H11 2 1500 3 147 151 157 H12 2 300L 3 163 – 197 H47 H10 3 600 4 165 169 199 H15 3 900 4 166 170 200 H51 H11 3 1500 4 167 171 201 H12 3 300 4 203 207 212 H47 H15 3 600 4 204 – 213 3 900 6 – 209 – H10 H51 3 900 6 205 – 214 H11 H12 H15 3 1500 6 206 210 215

Inlet

Outlet

Center Center PN to face to face 63 [mm] [mm]

H16

H16

H16

H16

H16

H16

105 105 105 140 105 105 105 140 124 124 124 140 124 124 124 124 156 156 130 130 130 154 154 154 137 184 184 184 156 184 184 198 197

114 114 114 178 114 114 114 178 121 152 165 178 121 152 152 165 172 172 124 124 124 162 162 162 124 181 181 181 162 181 181 216 216

LWN 470.48

Flanged Safety Relief Valves · API Series Accessories and Options · DIN Flanges

Standard Valve Size and Class Orifice

L

M

N

P

Q

R T

Inlet

Outlet

Valve Code

Flange Drillings according to DIN EN 1092-1 / DIN 2501 Inlet

Outlet

Dimensions Inlet

Outlet

NPS

Standard NPS Center Center Material PN PN PN PN PN PN PN PN PN PN PN PN PN PN PN flange to face to face 10 16 25 40 63 100 160 250 320 400 10 16 25 40 63 [inch] class [inch] WCB WC6 CF8M [mm] [mm] 3 300L 4 233 – 243 H15 156 165 H47 4 300 6 234 238 244 H45 179 181 H10 4 600 6 235 – 245 179 203 H51 4 600 6 – 239 – H11 181 203 4 900 6 236 240 246 197 222 4 1500 6 237 241 – H12 197 222 4 300 6 581 584 588 H45 H47 178 184 H10 4 600 6 582 585 589 H51 178 203 H11 4 900 6 583 586 – H12 197 222 4 300 6 591 594 598 H45 H47 H10 197 210 4 600 6 592 595 599 H11 H51 197 222 4 900 6 593 596 – H12 197 222 4 300L 6 646 – 654 H45 181 229 H47 4 300 6 647 650 655 225 254 H51 4 600 6 648 651 656 H10 H11 225 254 4 900 6 649 652 – H11 H12 225 254 6 300 8 658 660 663 H45 H47 240 241 H50 H51 H52 6 600 8 659 661 664 H10 H11 240 241 6 300L 8 666 669 672 H45 H52 240 241 6 300 10 667 – 673 H47 H10 H50 H51 240 267 6 600 10 668 670 674 240 267 8 300 10 676 677 679 H46 H47 H50 H51 276 279

Note: The pressure-temperature ratings according to ASME ANSI B16.34 do not apply for DIN Flanges.

LWN 470.49

51

Type 526

Flanged Safety Relief Valves · API Series Spare Parts · Discs

Spare Parts Discs – Metal to metal seat (Item 7) Orifice D E F G Orifice H J K Orifice L M N P Q R T

Body Material WCB / WC6 CF8M WCB / WC6 CF8M WCB / WC6 CF8M WCB / WC6 CF8M Body Material WCB / WC6 CF8M WCB / WC6 CF8M WCB WC6 CF8M Body Material WCB / WC6 CF8M WCB / WC6 CF8M WCB / WC6 CF8M WCB / WC6 CF8M WCB / WC6 CF8M WCB / WC6 CF8M WCB / WC6 CF8M

Flange Class 300Lx150 300x150 600x150 900x300 1500x300 2500x300 225.0439.9000 225.0539.9000 225.0639.9000 225.0469.9000 225.0569.9000 225.0669.9000 225.0439.9000 225.0539.9000 225.0639.9000 225.0469.9000 225.0569.9000 225.0669.9000 225.0739.9000 225.0839.9000 225.0769.9000 225.0869.9000 225.1139.9000 225.1439.9000 225.1169.9000 225.1469.9000 Flange Class 150x150 300Lx150 300x150 600x150 900x150 1500x300 225.1539.9000 225.1639.9000 225.1569.9000 225.1669.9000 225.1839.9000 225.1939.9000 225.1869.9000 225.1969.9000 225.2139.9000 225.2439.9000 225.2139.9000 225.2439.9000 225.2169.9000 225.2469.9000 Flange Class 150x150 300Lx150 300x150 600x150 900x150 1500x150 225.2539.9000 225.2639.9000 225.2839.9000 225.2569.9000 225.2669.9000 225.2869.9000 225.2939.9000 225.3139.9000 225.2969.9000 – 225.3239.9000 225.3269.9000 225.3439.9000 225.3539.9000 225.3469.9000 225.3569.9000 225.3639.9000 225.3669.9000 225.3739.9000 225.3839.9000 Disc Material Type 225.3769.9000 225.3869.9000 Hardened stainless steel 5262 / 5267 225.3969.9000 316L stellited 5264 225.3969.9000 150x150

Discs – Soft seal, disc material: 316L (Item 7) Flange Class 600x150

Orifice

Body Material

D

all

205.0149.90X1

205.0249.90X1

on request

E

all

205.0149.90X1

205.0249.90X1

on request

F

all

150x150

300Lx150

300x150

900x300

1500x300

205.0349.90X1

205.0549.90X1

G

all

Orifice

Body Material

H

all

205.0849.90X1

205.0949.90X1

205.1049.90X1

all

205.1149.90X1

205.1249.90X1

on request

J

Orifice

WCB WC6 CF8M Body Material

L

all

M

all

N

all

P

all

Q

all

R

all

T

all

K

52

205.0649.90X1 150x150

300Lx150

on request


900x150

205.1349.90X1

150x150

300Lx150

900x150

205.1749.90X1

1500x150

on request

205.1949.90X1

on request

205.2149.90X1 205.2349.90X1

1500x300

205.1549.90X1


205.1649.90X1

2500x300

on request 205.2449.90X1

205.2549.90X1 205.2649.90X1 205.2849.90X1

on request

O-ring material code: D (EPDM) K (CR) L (FPM) C (FFKM) Durometer: 70-75 IRHD

X: X: X: X:

4 5 7 9

LWN 470.50

Flanged Safety Relief Valves · API Series Spare Parts · O-Rings · Nozzles

O-Rings – Soft seal seat (Item 7.3) Orifice

Body Material

D

all

502.0171.26X1 ARP 115 0.674 x 0.103

E

all

502.0171.26X1 ARP 115 0.674 x 0.103

F

all

502.0202.26X1 ARP 117 0.799 x 0.103

G

all

502.0249.35X1 ARP 214 0.984 x 0.139

Orifice

Body Material

H

all

502.0313.35X1 ARP 218 1.234 x 0.139

J

all

502.0408.35X1 ARP 223 1.609 x 0.139

K

all

502.0472.35X1 ARP 225 1.859 x 0.139

Orifice

Body Material

L

all

M

all

502.0628.53X1 ARP 333 2.475 x 0.210

N

all

502.0692.53X1 ARP 335 2.725 x 0.210

P

all

502.0850.53X1 ARP 340 3.350 x 0.210

Q

all

502.1104.53X1 ARP 348 4.350 x 0.210

R

all

502.1327.53X1 ARP 355 5.225 x 0.210

T

all

150x150

150x150

150x150

300Lx150

300Lx150

300Lx150

300x150




900x300

1500x300

900x150

1500x300

900x150

1500x150

2500x300

502.0567.35X1 ARP 228 2.234 x 0.139

O-ring material code: D (EPDM) K (CR) L (FPM) C (FFKM) Durometer: 70-75 IRHD

502.1664.53X1 ARP 363 6.475 x 0.210

X: X: X: X:

4 5 7 9

Nozzles – material: 316L (Item 5) Body Material WCB WC6 CF8M WCB WC6 CF8M WCB WC6 CF8M WCB WC6 CF 8M Body Material

Orifice D E F G Orifice H J K

WCB / CF8M

WC6 WCB / WC6/ CF8M WCB / CF8M

WC6 Body Material

Orifice L M N P Q R T

WCB / CF8M

WC6 WCB / WC6/ CF8M WCB / WC6/ CF8M WCB / WC6/ CF8M WCB / WC6/ CF8M WCB / CF8M

WC6 WCB / CF8M

LWN 470.51

WC6

150x150

300Lx150

300x150


900x300

1500x300

2500x300

207.2049.9000

207.2069.9000

207.2269.9000

207.2769.9000

207.2049.9000

207.2069.9000

207.2269.9000

207.2769.9000

207.2349.9000

207.2369.9000

207.2449.9000

150x150

207.2469.9000

300Lx150

207.2549.9000

Flange Class 300x150 600x150 207.2949.9000 207.2969.9000

207.3049.9000

207.3269.9000

900x150

1500x300

207.3169.9000

207.3569.9000

207.3349.9000 150x150

207.2869.9000

300Lx150

207.3449.9000

207.4169.9000 207.3369.9000 207.3669.9000 Flange Class 300x150 600x150 900x150 207.3769.9000

207.3969.9000

207.3869.9000

1500x150

207.4369.9000 207.4469.9000

207.4069.9000 207.4569.9000

207.4669.9000 207.4769.9000

207.4869.9000

207.4269.9000

All highlighted nozzles are stellited additionally as a standard. 207.2069.9000

= stellited

207.5769.9000

207.5969.9000 53

Type 526

Flanged Safety Relief Valves · API Series Spare Parts · Bellows and Bellows Conversion Kits · Gaskets

Bellows and Bellows Conversion Kits – material 316L (Item 15) Orifice

Part

D

bellows conversion kit bellows conversion kit bellows conversion kit bellows conversion kit

E F G Orifice

Part

H

bellows conversion kit bellows conversion kit bellows conversion kit

J K Orifice

Part

L

bellows conversion kit bellows conversion kit bellows conversion kit bellows conversion kit bellows conversion kit bellows conversion kit bellows conversion kit

M N P Q R T

150x150

300Lx150 400.8349.0021 on request 400.8349.0021 on request 400.8449.0021 on request 400.8549.0021 on request

300x150


900x300 1500x300 400.8349.0000 on request 400.8349.0000 on request 400.8449.0000 on request 400.8549.0000 on request

Flange Class 300x150 600x150 900x150 400.8749.0000 on request 400.8849.0000 on request 400.8949.0021 400.8949.0000 on request on request Flange Class 150x150 300Lx150 300x150 600x150 900x150 400.9049.0000 400.9149.0000 on request on request 400.9249.0021 400.9249.0000 on request on request 400.9349.0021 400.9349.0000 on request on request 400.9449.0000 400.9549.0000 on request on request 400.9649.0000 on request 400.9749.0021 400.9749.0000 on request on request 400.9849.0000 on request 150x150 300Lx150 400.8549.0021 on request

2500x300

1500x300

1500x150

Gaskets – body / bonnet, material graphite / 316L (Item 60) Flange Class 600x150

Orifice

Body Material

D

all

500.0807.0000

500.1207.0000

E

all

500.0807.0000

500.1207.0000

F

all

150x150

300Lx150

300x150

900x300

all

Orifice

Body Material

H

all

500.1207.0000

500.1607.0000

J

all

500.1607.0000

500.1907.0000

K

all

Orifice

Body Material

L

all

M

all

500.2107.0000

N

all

500.2107.0000

P

all

Q

all

R

all

Note: 54

500.1207.0000 150x150

300Lx150

500.1607.0000


900x150

150x150

300Lx150

1500x300

500.2107.0000 1

500.1907.0000 Flange Class 300x150 600x150

500.1907.0000

900x150

1500x150

500.2107.0000

500.2107.0000

500.2207.0000 500.2207.0000

500.2207.0000

all 1

2500x300

500.1207.0000

G

T

1500x300

500.2807.0000

500.2807.0000

900x150 in WC6: 500.1907.0000 LWN 470.52

Flanged Safety Relief Valves · API Series Spare Parts · Balls

Balls – material 316 SS (Item 57) Orifice

Body Material

D

all

E

all

F

all

G

all

Orifice

Body Material

H

all

J

all

K

all

Orifice

Body Material

L

all

M

all

N

all

P

all

Q

all

R

all

T

all

150x150

300Lx150

300x150


900x300

1500x300

900x150

1500x300

900x150

1500x150

2500x300

Ø 3 mm 510.0604.0000 12 pieces

150x150 300Lx150 Ø 3 mm · 510.0604.0000 12 pieces


Ø 3 mm 510.0604.0000 15 pieces

150x150

300Lx150


Ø 3 mm 510.0604.0000 15 pieces

Plug screw (Item 66) 451.0114.0000 (size: M 5 x 6)

Balls – material 316 (Item 61) Orifice

Body Material

D

all

E

all

F

all

G

all

Orifice

Body Material

H

all

J

all

K

all

Orifice

Body Material

L

all

M

all

N

all

P

all

Q

all

R

all

T

all

LWN 470.53

150x150

300Lx150

300x150


900x300

1500x300

900x150

1500x300

900x150

1500x150

2500x300

Ø 9 mm 510.0204.0000

150x150

300Lx150

Flange Class 300x150 600x150 Ø 9 mm · 510.0204.0000 Ø 15 mm 510.0404.0000

150x150

300Lx150


Ø 15 mm 510.0404.0000

55

Type 526

Flanged Safety Relief Valves · API Series Spare Parts · Split Rings · Needle Bearings

Split Rings – material 316L (Item 14) Orifice

Body Material

D

all

E

all

F

all

150x150

300Lx150

300x150


900x300

1500x300

2500x300

251.0249.0000

G

all

Orifice

Body Material

251.0349.0000 150x150

300Lx150

H

all

251.0249.0000

J

all

251.0349.0000

K

all

Orifice

Body Material

L

all

M

all

N

all

P

all

Q

all

R

all

T

all


900x150

1500x300

251.0349.0000

251.0449.0000

150x150

300Lx150


900x150

1500x150

900x300

1500x300

251.0449.0000

251.0549.0000

251.1949.0000

Needle Bearings – material 316 SS (Item 69) Orifice

Body Material

D

all

E

all

F

all

150x150

300Lx150

300x150


2500x300

250.0749.0000

G

all

Orifice

Body Material

H

all

250.0749.0000

J

all

250.0849.0000

K

all

Orifice

Body Material

L

all

M

all

N

all

P

all

Q

all

R

all

T

all

250.0849.0000 150x150

300Lx150


900x150

1500x300

250.0849.0000

250.0949.0000

150x150

300Lx150


900x150

1500x150

250.0949.0000

250.1049.0000

56

LWN 470.54

Flanged Safety Relief Valves · API Series Spare Parts Recommendations

Spare Parts Recommendations

The following recommendations for spare parts should be taken as a guideline. The actual needs for the replacement of parts depend on various conditions like ● operating temperature ● set pressure and operating pressure ● fluid ● environment ● material selection

Recommended spare parts for 1 year operation

These operating conditions have a significant influence on the product life of safety relief valves.

Recommended spare parts for more than 1 year operation

Item

Part

7

Disc

60

Gasket

Item

Part

5

Nozzle

7

Disc

15

Bellows (if applicable)

60

Gasket

Further to that we recommend to stock items 14 (Split rings), 57 (Balls), 61 (Ball) for assembly purposes.

LWN 470.55

57

Type 526

Flanged Safety Relief Valves · API Series Spare Parts · Rework of seat and disc

Rework of seat and disc

Minor damages on the seating surf a c e s of nozzle and disc can be repaired by lapping or by machining and successive lapping. For this purpose LESER offers lapping stamps as well as lapping paste.

Lapping Stamps Orifice

Designation and size

Part-no.

D+E

Lapping stamp orifice D + E

445.1359.0000

F+G

Lapping stamp orifice F + G

445.1459.0000

H

Lapping stamp orifice H

445.1559.0000

J

Lapping stamp orifice J

445.1659.0000

K

Lapping stamp orifice K

445.1759.0000

Lapping stamp orifice L + M

445.1859.0000

N

Lapping stamp orifice N

445.1959.0000

P

Lapping stamp orifice P

445.2059.0000

Lapping stamp orifice Q + R

445.2259.0000

Lapping stamp orifice T

445.2359.0000

L+M

Q+R T

Lapping Paste

58

Lapping paste

Supplying-lot

Designation

Application

Tetraboron paste “WL” F 800

Tubes to 100 g net

F grinding-paste 800

Primary lapping

Tetraboron paste “WL” F 1200

Tubes to 100 g net

F grinding-paste 1200

Finishing

LWN 470.56

Flanged Safety Relief Valves · API Series Approvals · Orifice Areas and Orifice Diameters

Approvals Approvals and Coefficients of discharge Coefficient of Discharge

Country

Code

Fluid

Approval No.

Orifice

ASME certified K

ASME measured KD

API Kd

S/G L

M37224 M37235 M37246 M37257

E–T E–T D D

0.801 0.579 0.455 0.343

0.890 0.643 0.506 0.381

0.975 0.650 0.975 0.650

United States

ASME VIII

Canada

CRN

S/G/L

OG0873.9C

Country

Code

Fluid

Approval No.

Orifice

Coefficient of Discharge αD

Europe

PED 97/23 / EC (CE-marking)

S/G L S/G L

072020111 Z0008/0/26

E–T E–T D D

0.8 0.58 0.45 0.32

Germany

AD-2000 Merkblatt A2

S/G/L

TUEV SV 1082

China: CIC (Russia): Poland: Hungary: Prequalifications:

SQL BPV GOST, GOSGORTECHNADZOR UDT TMB Shell Global Solutions, Total Fina Elf and others

Classification authorities:

LROS, GL, DNV, BV

Others

S/G L

Refer to ASME-code

Refer to PED 97 / 23 / EC

Orifice Areas and Orifice Diameters Sizing according to ASME VIII with ASME K Orifice Letter D E F G H J K L M N P Q R T

Actual Orifice Area A0 [inch2 ] 0.239 0.239 0.394 0.616 0.975 1.58 2.25 3.48 4.43 5.30 7.79 13.55 19.48 31.75

[mm2 ] 154 154 254 398 629 1018 1452 2248 2856 3421 5027 8742 12568 20485

Sizing according to API 520 with API Kd

Actual Orifice Diameter d0 [inch] 0.551 0.551 0.709 0.886 1.11 1.42 1.69 2.11 2.37 2.60 3.15 4.15 4.98 6.36

[mm] 14.0 14.0 18.0 22.5 28.3 36.0 43.0 53.5 60.3 66.0 80.0 105.5 126.5 161.5

Effective Orifice Area A0 [inch2 ] 0.110 0.196 0.307 0.503 0.785 1.287 1.838 2.853 3.600 4.340 6.380 11.050 16.000 26.000

[mm2 ] 71 126 198 325 506 830 1186 1841 2323 2800 4116 7129 10323 16774

Effective Orifice Diameter d0 [inch] 0.374 0.500 0.625 0.800 1.000 1.280 1.530 1.906 2.141 2.351 2.850 3.751 4.514 5.754

[mm] 9.5 12.7 15.9 20.3 25.4 32.5 38.9 48.4 54.5 59.7 72.4 95.3 114.6 146.1

Remark Sizing according to API 520: use effective orifice areas according to API 526 and API Kd. Sizing according to ASME VIII: use actual orifice areas and ASME certified K. Sizing according to AD-2000 Merkblatt A2: use actual orifice areas and coefficient of discharge αD. LWN 470.57

59

Type 526

Flanged Safety Relief Valves · API Series Capacities US Units · STEAM

STEAM ASME Section VIII [lb/ h]

Capacities US Units Orifice [Inch2 ] Set Pressure [psig] 15 20 30 40 50 60 70 80 90 100 120 140 160 180 200 220 240 260 280 300 320 340 360 380 400 420 440 460 480 500 600 700 800 900 1000 1100 1200 1300 1400 1500 2000 2500

D 0.239 182 210 266 327 389 450 512 573 635 696 819 942 1065 1188 1311 1434 1557 1680 1803 1926 2049 2172 2295 2418 2541 2664 2787 2910 3033 3156 3771 4386 5001 5616 6231 6846 7461 8076 8679 9351 12929 17110

E 0.239 320 369 468 576 684 792 901 1009 1117 1226 1442 1659 1875 2092 2308 2525 2741 2958 3174 3391 3607 3824 4041 4257 4474 4690 4907 5123 5340 5556 6639 7722 8804 9887 10970 12053 13135 14218 15279 16462 22761 30121

F 0.394 529 610 773 952 1131 1310 1489 1668 1847 2026 2384 2742 3100 3458 3816 4174 4532 4890 5248 5605 5963 6321 6679 7037 7395 7753 8111 8469 8827 9185 10975 12765 14554 16344 18134 19924 21713 23503 25257 27212 37626 49792

Capacities for saturated steam according to ASME Section VIII (UV) based on set pressure plus 10 % overpressure.

60

G 0.616 827 954 1208 1488 1767 2047 2327 2606 2886 3165 3725 4284 4843 5403 5962 6521 7081 7640 8199 8759 9318 9877 10436 10996 11555 12114 12674 13233 13792 14352 17148 19945 22741 25538 28334 31131 33927 36724 39465 42519 58790 77799

H 0.975 1308 1509 1911 2353 2796 3238 3681 4123 4565 5008 5893 6777 7662 8547 9432 10317 11202 12086 12971 13856 14741 15626 16511 17395 18280 19165 20050 20935 21819 22704 27128 31553 35977 40401 44825 49249 53673 58097 62433 67266 93006 123079

J 1.578 1972 2374 3188 3992 4778 5511 6241 6970 7677 8401 9848 11291 12734 14137 15576 17014 18454 19895 21338 22783 24162 25607 27055 28506 29959 31415 32875 34338 35804 37170 44556 52048 59488 67205 75065 82844 91007 99358 107914 116363 164691 227959

K 2.251 3019 3483 4412 5433 6454 7476 8497 9519 10540 11561 13604 15647 17690 19732 21775 23818 25861 27904 29946 31989 34032 36075 38117 40160 42203 44246 46289 48331 50374 52417 62631 72845 83059 93273 103486 113700 123914 134128 144138 155295 214721

L 3.484 4673 5392 6829 8410 9991 11572 13154 14735 16316 17897 21059 24221 27384 30546 33708 36870 40032 43195 46357 49519 52681 55844 59006 62168 65330 68492 71655 74817 77979 81141 96953 112764 128575 144386 160197 176008 191819 207630 223126 240397

M 4.426 5937 6850 8675 10684 12693 14701 16710 18718 20727 22736 26753 30770 34787 38804 42821 46839 50856 54873 58890 62907 66924 70942 74959 78976 82993 87010 91027 95045 99062 103079 123165 143250 163336 183422 203508 223594

N 5.303 7112 8206 10393 12799 15206 17612 20018 22424 24831 27237 32050 36862 41675 46487 51300 56112 60925 65737 70550 75362 80175 84987 89800 94612 99425 104237 109050 113862 118675 123487 147550 171613 195675 219738 243800

P 7.791 10449 12056 15270 18805 22341 25876 29412 32947 36482 40018 47088 54159 61230 68301 75371 82442 89513 96584 103654 110725 117796 124866 131937 139008 146079 153149 160220 167291 174362 181432 216786 252140 287493 322847 358201

Q 13.550 18172 20967 26556 32704 38853 45001 51150 57298 63446 69595 81891 94188 106485 118782 131078 143375 155672 167969 180265 192562 204859 217155 229452 241749 254046 266342 278639 290936 303233 315529 377013

R 19.481 25920 29907 37879 46649 55419 64189 72959 81729 90499 99269 116809 134348 151888 169428 186968 204508 222048 239587 257127 274667

T 31.752 42584 49133 62231 76639 91046 105454 119862 134270 148678 163086 191902 220717 249533 278349 307165 335980 364796 393612 422428 451243

Capacities at 30 psig and bellow are based on 3 psig overpressure.

LWN 470.58

Flanged Safety Relief Valves · API Series Capacities Metric Units · STEAM

STEAM ASME Section VIII [kg / h]

Capacities Metric Units Orifice [mm2] Set Pressure [bar] 1 2 3 4 5 6 7 8 9 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200

D 154 81.2 118 158 199 239 280 320 361 401 442 523 604 685 765 846 927 1008 1089 1170 1251 1332 1413 1494 1575 1656 2061 2466 2871 3275 3680 4092 4540 5002 5479 5974 6493 7040 7622 8250 8936 9700

E 154 143 208 279 350 421 492 564 635 706 777 920 1063 1205 1348 1490 1633 1775 1918 2060 2203 2345 2488 2630 2773 2915 3628 4341 5054 5766 6479 7204 7993 8805 9645 10518 11431 12394 13419 14523 15731 17077

F 254 236 343 461 578 696 814 932 1050 1167 1285 1521 1756 1992 2228 2463 2699 2935 3170 3406 3641 3877 4113 4348 4584 4819 5998 7176 8354 9532 10710 11908 13212 14555 15943 17386 18896 20488 22182 24008 26004 28229

Capacities for saturated steam according to ASME Section VIII (UV) based on set pressure plus 10 % overpressure.

LWN 470.59

G 398 369 537 720 904 1088 1272 1456 1640 1824 2008 2376 2744 3113 3481 3849 4217 4585 4953 5322 5690 6058 6426 6794 7162 7530 9371 11212 13053 14894 16734 18607 20644 22742 24911 27166 29525 32012 34660 37512 40631 44107

H 629 584 849 1138 1430 1721 2012 2303 2594 2886 3177 3759 4342 4924 5507 6089 6671 7254 7836 8419 9001 9584 10166 10748 11331 11913 14825 17737 20650 23562 26474 29436 32660 35978 39410 42977 46708 50643 54832 59344 64279

J 1018 945 1374 1842 2313 2785 3256 3727 4198 4670 5141 6083 7026 7968 8911 9853 10796 11738 12681 13623 14566 15508 16451 17393 18335 19278 23990 28703 33415 38127 42840 47633 52850 58220 63773 69545 75584 81951 88729 96031

K 1452 1349 1960 2628 3300 3973 4645 5317 5990 6662 7334 8679 10024 11368 12713 14057 15402 16747 18091 19436 20781 22125 23470 24815 26159 27504 34227 40950 47673 54396 61120 67958 75401 83063 90985 99220 107835

L 2248 2088 3034 4068 5109 6150 7191 8231 9272 10313 11354 13435 15517 17598 19680 21761 23842 25924 28005 30087 32168 34250 36331 38413 40494 42576 52983 63391 73798 84206 94613 105199

M 2856 2652 3854 5168 6490 7813 9135 10457 11779 13101 14423 17067 19712 22356 25000 27644 30289 32933 35577 38221 40865 43510 46154 48798 51442 54087 67308 80529 93750

N 3421 3177 4617 6192 7775 9359 10943 12527 14111 15695 17279 20447 23614 26782 29950 33118 36285 39453 42621 45789 48956 52124 55292 58460 61628 64795 80634 96473

P 5027 4668 6784 9097 11424 13751 16078 18405 20732 23059 25387 30041 34695 39349 44003 48658 53312 57966 62620 67274 71929 76583 81237 85891 90545 95200 118471 141742

Q 8742 8119 11798 15820 19867 23915 27962 32009 36056 40103 44150 52244 60338 68432 76526 84621 92715 100809 108903 116997 125091 133185 141280 149374 157468 165562

R 12568 11581 16829 22566 28339 34111 39884 45657 51429 57202 62975 74520 86065 97611 109156 120701

T 20485 19026 27647 37073 46557 56040 65524 75008 84492 93976 103459 122427 141394 160362 179329 198297

Capacities at 2,07 bar (30 psig) and below are based on 0,207 bar (3 psig) overpressure.

61

Type 526

Flanged Safety Relief Valves · API Series Capacities US Units · AIR

AIR ASME Section VIII [S.C.F.M.]

Capacities US Units Orifice [Inch2 ] Set Pressure [psig] 15 20 30 40 50 60 70 80 90 100 120 140 160 180 200 220 240 260 280 300 320 340 360 380 400 420 440 460 480 500 600 700 800 900 1000 1100 1200 1300 1400 1500 2000 2500 3000 3500 4000 4500 5000 5500 6000

D 0.239 64.7 74.6 94.5 116 138 160 182 204 226 248 291 335 379 423 466 510 554 598 642 685 729 773 817 860 904 948 992 1035 1079 1123 1342 1561 1779 1998 2217 2436 2655 2873 3092 3311 4405 5499 6593 7687 8781 9876 10970 12064 13158

E 0.239 114 131 166 205 243 282 320 359 398 436 513 590 667 744 821 898 975 1052 1129 1206 1283 1361 1438 1515 1592 1669 1746 1823 1900 1977 2362 2747 3133 3518 3903 4288 4673 5059 5444 5829 7755 9681 11607 13533 15459 17385 19311 21237 23163

F 0.394 188 217 274 338 401 465 528 592 655 719 846 973 1100 1227 1354 1481 1608 1735 1862 1989 2116 2243 2370 2497 2624 2751 2878 3005 3132 3259 3894 4529 5164 5799 6434 7069 7704 8339 8974 9609 12784 15960 19135 22310 25485 28660 31835

Capacities for air according to ASME Section VIII (UV), based on set pressure plus 10 % overpressure at 60 °F.

62

G 0.616 293 339 429 528 627 727 826 925 1025 1124 1322 1521 1720 1918 2117 2315 2514 2712 2911 3110 3308 3507 3705 3904 4102 4301 4499 4698 4897 5095 6088 7081 8074 9067 10059 11052 12045 13038 14031 15024 19988 24952 29916 34881

H 0.975 464 536 679 836 993 1150 1307 1464 1622 1779 2093 2407 2722 3036 3350 3665 3979 4293 4607 4922 5236 5550 5865 6179 6493 6807 7122 7436 7750 8065 9636 11208 12779 14351 15922 17493 19065 20636 22208 23779 31637 39494

J 1.578 606 733 993 1254 1509 1748 1987 2225 2464 2703 3180 3658 4136 4613 5091 5568 6046 6523 7001 7479 7956 8434 8911 9389 9866 10344 10822 11299 11777 12254 14642 17030 19418 21806 24194 26581 28969 31357 33745 36133 48072 60011

K 2.251 1072 1237 1567 1930 2293 2655 3018 3381 3744 4107 4832 5558 6284 7009 7735 8460 9186 9912 10637 11363 12088 12814 13540 14265 14991 15717 16442 17168 17893 18619 22247 25875 29503 33131 36759 40387 44016 47644 51272 54900 73040

L 3.484 1660 1915 2425 2987 3548 4110 4672 5233 5795 6356 7479 8602 9725 10848 11972 13095 14218 15341 16464 17587 18710 19833 20956 22079 23202 24325 25448 26572 27695 28818 34433 40048 45664 51279 56895 62510 68125 73741 79356 84971

M 4.426 2108 2433 3081 3795 4508 5221 5935 6648 7361 8075 9501 10928 12355 13782 15208 16635 18062 19489 20915 22342 23769 25196 26622 28049 29476 30902 32329 33756 35183 36609 43743 50877 58010 65144 72278 79411

N 5.303 2526 2915 3692 4546 5401 6256 7111 7965 8820 9675 11384 13094 14803 16512 18222 19931 21641 23350 25060 26769 28479 30188 31897 33607 35316 37026 38735 40445 42154 43863 52411 60958 69505 78052 86599

P 7.791 3711 4282 5424 6679 7935 9191 10447 11702 12958 14214 16725 19237 21748 24260 26771 29282 31794 34305 36817 39328 41840 44351 46863 49374 51886 54397 56908 59420 61931 64443 77000 89557 102114 114672 127229

Q 13.550 6455 7447 9433 11617 13801 15985 18169 20353 22537 24720 29088 33456 37824 42192 46560 50928 55296 59663 64031 68399 72767 77135 81503 85871 90239 94606 98974 103342 107710 112078 133917

R 19.481 9207 10623 13455 16570 19685 22800 25915 29030 32145 35260 41490 47720 53950 60180 66410 72641 78871 85101 91331 97561

T 31.752 15126 17452 22104 27222 32340 37457 42575 47693 52810 57928 68163 78399 88634 98869 109105 119340 129575 139811 150046 160281

Capacities at 30 psig and below are based on 3 psig overpressure.

LWN 470.60

Flanged Safety Relief Valves · API Series Capacities Metric Units · AIR

AIR ASME Section VIII [mn3/ h]

Capacities Metric Units Orifice [mm2] Set Pressure [bar] 1 2 3 4 5 6 7 8 9 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200 250 300 350 400

D 154 109 158 211 266 320 374 428 482 536 590 698 806 915 1023 1131 1239 1347 1456 1564 1672 1780 1888 1997 2105 2213 2754 3295 3836 4377 4918 5458 5999 6540 7081 7622 8163 8704 9245 9786 10327 10868 13572 16277 18982 21686

E 154 191 278 372 467 563 658 753 848 944 1039 1229 1420 1610 1801 1991 2182 2372 2562 2753 2943 3134 3324 3515 3705 3896 4848 5800 6753 7705 8657 9609 10562 11514 12466 13418 14371 15323 16275 17228 18180 19132 23894 28655 33416 38178

F 254 315 458 614 771 928 1085 1242 1399 1556 1713 2027 2341 2655 2968 3282 3596 3910 4224 4538 4852 5166 5480 5794 6108 6422 7992 9562 11132 12702 14272 15841 17411 18981 20551 22121 23691 25261 26830 28400 29970 31540 39389 47239

Capacities for air according to ASME Section VIII (UV), based on set pressure plus 10 % overpressure at 16 °C.

LWN 470.61

G 398 492 716 959 1205 1450 1696 1941 2187 2432 2678 3168 3659 4150 4641 5132 5623 6114 6605 7095 7586 8077 8568 9059 9550 10041 12495 14950 17404 19858 22313 24767 27222 29676 32130 34585 37039 39494 41948 44403 46857 49311 61583

H 629 779 1133 1519 1907 2296 2684 3073 3461 3850 4238 5015 5792 6569 7346 8123 8900 9677 10454 11231 12008 12785 13562 14339 15115 15892 19777 23662 27547 31432 35317 39201 43086 46971 50856 54741 58625 62510 66395 70280 74165

J 1018 1261 1833 2458 3087 3715 4344 4973 5602 6230 6859 8117 9374 10631 11889 13146 14404 15661 16919 18176 19434 20691 21949 23206 24464 25721 32009 38296 44584 50871 57158 63446 69733 76021 82308 88596 94883 101171 107458 113745

K 1452 1799 2615 3506 4403 5300 6197 7094 7991 8887 9784 11578 13372 15166 16959 18753 20547 22341 24135 25928 27722 29516 31310 33104 34897 36691 45660 54629 63598 72567 81536 90505 99474 108443 117412 126381 135350

L 2248 2785 4047 5427 6815 8203 9591 10979 12367 13756 15144 17920 20696 23473 26249 29025 31802 34578 37355 40131 42907 45684 48460 51236 54013 56789 70671 84553 98434 112316 126198 140080

M 2856 3538 5141 6894 8657 10421 12184 13948 15711 17475 19238 22765 26292 29819 33346 36873 40400 43927 47454 50981 54508 58036 61563 65090 68617 72144 89779 107414 125049

N 3421 4239 6160 8260 10373 12486 14599 16711 18824 20937 23050 27276 31502 35728 39954 44180 48406 52632 56857 61083 65309 69535 73761 77987 82213 86439 107568 128698

P 5027 6228 9050 12135 15239 18343 21448 24552 27656 30761 33865 40073 46282 52490 58699 64907 71116 77325 83533 89742 95950 102159 108367 114576 120784 126993 158036 189078

Q 8742 10831 15739 21105 26504 31903 37302 42700 48099 53498 58897 69695 80493 91291 102088 112886 123684 134482 145280 156077 166875 177673 188471 199269 210066 220864

R 12568 15449 22449 30103 37803 45504 53205 60906 68606 76307 84008 99409 114811 130212 145613 161015

T 20485 25380 36881 49455 62107 74758 87409 100061 112712 125364 138015 163318 188620 213923 239226 264529


63

Type 526

Flanged Safety Relief Valves · API Series Capacities US Units · WATER

WATER ASME Section VIII [US - G.P.M.]

Capacities US Units Orifice [Inch2 ] Set Pressure [psig] 15 20 30 40 50 60 70 80 90 100 120 140 160 180 200 220 240 260 280 300 320 340 360 380 400 420 440 460 480 500 600 700 800 900 1000 1100 1200 1300 1400 1500 2000 2500 3000 3500 4000 4500 5000 5500 6000

D 0.239 13.2 14.9 17.9 20.6 23.1 25.3 27.3 29.2 30.9 32.6 35.7 38.6 41.2 43.7 46.1 48.4 50.5 52.6 54.6 56.5 58.3 60.1 61.9 63.6 65.2 66.8 68.4 69.9 71.4 72.9 79.9 86.3 92.2 97.8 103 108 113 118 122 126 146 163 179 193 206 219 231 242 253

E 0.239 22.3 25.2 30.1 34.8 38.9 42.6 46.0 49.2 52.2 55.0 60.3 65.1 69.6 73.8 77.8 81.6 85.3 88.7 92.1 95.3 98.4 101 104 107 110 113 115 118 121 123 135 146 156 165 174 183 191 198 206 213 246 275 301 326 348 369 389 408 426

F 0.394 36.7 41.5 49.7 57.4 64.2 70.3 75.9 81.1 86.1 90.7 99.4 107 115 122 128 135 141 146 152 157 162 167 172 177 181 186 190 195 199 203 222 240 257 272 287 301 314 327 339 351 406 454 497 537 574 609 642

Capacities for water according to ASME Section VIII (UV), based on set pressure plus 10 % overpressure at 68 °F.

64

G 0.616 57.4 64.9 77.7 89.7 100 110 119 127 135 142 155 168 179 190 201 210 220 229 237 246 254 262 269 277 284 291 298 304 311 317 347 375 401 426 449 470 491 511 531 549 634 709 777 839

H 0.975 90.8 103 123 142 159 174 188 201 213 225 246 266 284 301 318 333 348 362 376 389 402 414 426 438 449 460 471 482 492 502 550 594 635 674 710 745 778 809 840 870 1004 1123

J 1.578 147 166 199 230 257 281 304 325 345 363 398 430 460 488 514 539 563 586 608 629 650 670 689 708 727 745 762 779 796 813 890 961 1028 1090 1149 1205 1259 1310 1360 1407 1625 1817

K 2.251 210 237 284 328 367 402 434 464 492 518 568 613 656 695 733 769 803 836 867 898 927 956 983 1010 1037 1062 1087 1112 1136 1159 1270 1371 1466 1555 1639 1719 1796 1869 1939 2008 2318

L 3.484 325 367 439 507 567 621 671 718 761 802 879 949 1015 1076 1135 1190 1243 1294 1342 1390 1435 1479 1522 1564 1605 1644 1683 1721 1758 1794 1965 2123 2269 2407 2537 2661 2779 2893 3002 3107

M 4.426 412 466 558 645 721 789 853 912 967 1019 1116 1206 1289 1367 1441 1512 1579 1643 1705 1765 1823 1879 1934 1987 2038 2089 2138 2186 2233 2279 2496 2696 2883 3058 3223 3380

N 5.303 494 558 669 772 863 946 1022 1092 1158 1221 1338 1445 1545 1638 1727 1811 1892 1969 2043 2115 2184 2252 2317 2380 2442 2503 2561 2619 2675 2731 2991 3231 3454 3663 3862

P 7.791 726 820 983 1135 1269 1390 1501 1605 1702 1794 1965 2123 2269 2407 2537 2661 2779 2893 3002 3107 3209 3308 3404 3497 3588 3677 3763 3848 3931 4012 4394 4747 5074 5382 5673

Q 13.550 1262 1427 1709 1973 2206 2417 2611 2791 2960 3120 3418 3692 3947 4186 4413 4628 4834 5031 5221 5404 5582 5753 5920 6082 6240 6394 6545 6692 6836 6977 7643

R 19.481 1800 2035 2438 2815 3147 3447 3724 3981 4222 4450 4875 5266 5629 5971 6294 6601 6895 7176 7447 7708

T 31.752 2958 3343 4005 4624 5170 5664 6117 6540 6936 7312 8009 8651 9248 9809 10340 10845 11327 11790 12235 12664

Capacities at 30 psig and below are based on 3 psig overpressure.

LWN 470.62

Flanged Safety Relief Valves · API Series Capacities Metric Units · WATER

WATER ASME Section VIII [103 kg/ h]

Capacities Metric Units Orifice [mm2] Set Pressure [bar] 1 2 3 4 5 6 7 8 9 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200 250 300 350 400

D 154 2.95 4.00 4.89 5.64 6.31 6.91 7.46 7.98 8.46 8.92 9.77 10.6 11.3 12.0 12.6 13.2 13.8 14.4 14.9 15.5 16.0 16.4 16.9 17.4 17.8 19.9 21.9 23.6 25.2 26.8 28.2 29.6 30.9 32.2 33.4 34.6 35.7 36.8 37.8 38.9 39.9 44.6 48.9 52.8 56.4

E 154 4.99 6.75 8.25 9.52 10.6 11.7 12.6 13.5 14.3 15.1 16.5 17.8 19.0 20.2 21.3 22.3 23.3 24.3 25.2 26.1 26.9 27.8 28.6 29.4 30.1 33.7 36.9 39.8 42.6 45.2 47.6 49.9 52.2 54.3 56.3 58.3 60.2 62.1 63.9 65.6 67.3 75.3 82.5 89.1 95.2

F 254 8.22 11.1 13.6 15.7 17.6 19.2 20.8 22.2 23.6 24.8 27.2 29.4 31.4 33.3 35.1 36.8 38.5 40.0 41.5 43.0 44.4 45.8 47.1 48.4 49.7 55.5 60.8 65.7 70.2 74.5 78.5 82.3 86.0 89.5 92.9 96.1 99.3 102 105 108 111 124 136

Capacities for water according to ASME Section VIII (UV), based on set pressure plus 10 % overpressure at 20 °C.

LWN 470.63

G 398 12.9 17.4 21.3 24.5 27.4 30.1 32.5 34.7 36.8 38.8 42.5 45.9 49.1 52.1 54.9 57.6 60.1 62.6 64.9 67.2 69.4 71.6 73.6 75.7 77.6 86.8 95.1 103 110 116 123 129 134 140 145 150 155 160 165 169 174 194

H 629 20.3 27.5 33.6 38.9 43.4 47.6 51.4 54.9 58.3 61.4 67.3 72.7 77.7 82.4 86.9 91.1 95.2 99.1 103 106 110 113 117 120 123 137 150 163 174 184 194 204 213 222 230 238 246 253 261 268

J 1018 32.9 44.5 54.5 62.9 70.3 77.0 83.2 88.9 94.3 99.4 109 118 126 133 141 147 154 160 166 172 178 183 189 194 199 222 244 263 281 298 314 330 344 358 372 385 398 410 422

K 1452 47.0 63.5 77.7 89.7 100 110 119 127 135 142 155 168 179 190 201 210 220 229 237 246 254 262 269 276 284 317 347 375 401 426 449 470 491 511 531 549

L 2248 72.7 98.3 120 139 155 170 184 196 208 220 240 260 278 295 310 326 340 354 367 380 393 405 417 428 439 491 538 581 621 659 694

M 2856 92.4 125 153 176 197 216 233 249 265 279 305 330 353 374 394 414 432 450 467 483 499 514 529 544 558 624 683 738

N 3421 111 150 183 211 236 259 280 299 317 334 366 395 423 448 473 496 518 539 559 579 598 616 634 651 668 747 818

P 5027 163 220 269 310 347 380 411 439 466 491 538 581 621 659 694 728 761 792 821 850 878 905 931 957 982 1098 1202

Q 8742 283 382 468 540 604 661 714 764 810 854 935 1010 1080 1145 1207 1266 1323 1377 1429 1479 1527 1574 1620 1664 1708

R 12568 403 545 667 770 861 943 1019 1089 1155 1218 1334 1441 1540 1634 1722

T 20485 663 896 1096 1265 1415 1550 1674 1789 1898 2001 2192 2367 2531 2684 2829


65

Type 526

Flanged Safety Relief Valves · API Series Specification Sheet

Please fax to: 636 326 9185 or your local representative

Specification Sheet

Company:

Phone:

Location:

Fax:

Name:

e-mail:

Reference:

Date:

GENERAL 1 ■ Item No.: 2 ■ Tag No.: 3 ■ Customer: 4 ● Equipment: 5 ● Enquiry / Order No.: 6 ● Delivery time: 7 ● Number of valves: 8 ● Number of spare valves:

9 ■ Basis of Selection: Code: ■ PED 97/ 23 / EC (CE-marking) ■ Two phase flow ■ other: 10 ■ Documentation: Material test report ■ body ■ bonnet ■ other:

SERVICE CONDITIONS 11 ■ Fluid and state: ■ Steam (S) 12 ■ Molecular weight: 13 ● Coefficient C: 14 ● Ratio of specific heats k: 15 ● Compressibility factor Z: 16 ■ Spec. gravity / units: 17 ● Viscosity / units: 18 ■ Relieving temperature / units: VALVE CONSTRUCTION 26 ● Orifice Designation: 27 ● Flange inlet 28 ● Size: 29 ● Flange class: 30 ● Facing type: ■ RF

Page:

■ RJ

19 20 21 22 23 24 25

■ other:

■ ● ● ■ ■ ● ●

■ Gas (G) ■ Liquid (L) Required capacity / units: Operating pressure: Cold diff. set pressure / units: Const. back pressure / units: Var. back pressure / units: Overpressure: ■ 10 % Blowdown: ■ 7% ■ 20%

Flange outlet Size: Flange class: Facing type:

■ RF

■ RJ

MATERIALS 31 ● LESER Material Code ■ 2: WCB ■ 4: CF8M ■ 7: WC6 32 ■ Body: 37 ● Bellows: ■ 316L 33 ● Bonnet: ■ Inconel® 34 ● Nozzle: ■ 316L ■ other: 38 ● Spring: ■ high temp. alloy steel 35 ● Disc (metal): ■ SS hardened ■ 316L ■ other: ■ other: 39 ● Comply with NACE MR 0175 36 ● Soft seat seal: ■ CR ■ NBR ■ EPDM ■ Teflon® ■ FPM ■ FFKM ■ other: ■ Kel-F® ACCESSORIES AND OPTIONS 40 ■ Lifting lever: ■ cap H2 ■ plain H3 ■ packed H4 42 ● Bellows: ■ yes 41 ● Test gag: ■ yes ■ no 43 ● Others (specify): SIZING AND SELECTION 44 ▲ Required orifice area / units: 45 ▲ Selected orifice area / units: 46 ▲ Coeff. of discharge: 47 ▲ Calculated capacity / units: Order Code

5

2

6

■ ASME VIII ■ Fire

■ nozzle

■ Two phase

■ …… % ■ 10 % ■ …… %

■ other:

■ Hastelloy® ■ other: ■ stainless steel ■ Yes ■ No ■ Vespel SP-1®

■ no

■ Please fill in these fields in any case. ● Please fill in these fields if possible. ▲ These fields will be completed by the supplier.

. Article No.

66

of

Set Pressure

Connections

Options

Documentation

Code and Medium LWN 470.64

First in safety … … a not so brief history of LESER History

Safe solutions from the specialist

Where to find LESER

The company started in 1818 as a brass foundry and over the decades developed a product portfolio of components for mechanical equipment and machines during the “industrial revolution”. At first LESER specialized on tough applications and its level gauges for steam boilers were famous. Soon, the company delivered their first safety valve and as a consequence of quick growing industrialization and improving demand for safety, LESER rapidly became the specialist for safety valves.

Today, LESER´s product range includes 23 different designs with a variety of materials and sizes from 1/2” to 16”, p roviding safe solutions for almost every application with ● Full lift safety valves ● High-pressure safety valves ● Safety valves according to API 526 ● Relief and safety relief valves ● Clean service safety relief valves ● Safety valves for critical service conditions ● Safety valves according to special standards and regulation ● Safety valves with supplementary pneumatic load ● Special versions

Headquart e red in Germany, with a state-of-the-art factory and more than 250 employees, LESER is present through subsidiaries and qualified partners in over 40 countries, providing products and services worldwide.

Type 441

For the nearest source please contact us at:

LESER LLC 1664 Headland Drive Fenton, MO 63026 Phone: 636 - 343 - 8766 Fax: 636 - 326 - 9185 e-mail: [email protected] www.leserusa.com

Type 459

Type 437

Type 526

LESER’s factory today

Type 488

LESER Headquarter 1818 – 1914

API Series Catalog Edition June 2004 LWN 470.01-470.64 / 06.2004 / 2000

The Safety Valve LESER LLC

1664 Headland Drive Fenton, MO 63026

Phone: 636 - 343 - 8766 Fax: 636 - 326 - 9185

e-mail: [email protected] www.leserusa.com

04 4:37 PM Page 1 API Seri e s

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