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Design and production

Length of structure

Flange size

Pressure-Temperature

Experiment-test

GB12234

GB12221

GB9113 Jb79

GB9131

JB/T9092

Nominal pressure

1.6

2.5

4.0

6.4

10.0

16.0

Strength test

2.4

3.8

6.0

9.6

15.0

24.0

Water Seal Test

1.8

2.8

4.4

7.0

11.0

18.0

Upper Seal Test

1.8

2.8

4.4

7.04

11.0

18.0

Gas seal test

0.4-0.7

Body

valve handle

sealing surface

spacer

packing

Operating temperature ℃

Medium

WCB

1Cr13

13Cr
STL
body material 
PTFE
Nylon

Reinforced Flexible Graphite 
1Cr13/ Flexible Graphite 
08 soft steel 
PTFE

Flexible Graphite 
Reinforced Flexible Graphite 
SFP/260
PTFE

≤425

water Steam oil

WC1

≤450

WC6

38CrMoAl

≤540

WC9

25Cr2MoV

≤570

ZGCr5Mo

≤540

ZG1Cr18Ni9Ti

1Cr18Ni9Ti

≤200

nitric acid

ZG1Cr18Ni12Mo2Ti

1C18Ni12Mo2Ti

≤200

acetic acid

2.5MPa

DN

L

D

D1

D2

B

N-φd

H

D0

Z40H
Z40Y
Z40W
Z40F
Z40N

Z41H
Z41Y
Z41F
Z41N

15

130

95

65

45

16

4-φ14

172

120

20

150

105

75

55

16

4-φ14

191

140

25

160

115

85

65

16

4-φ14

205

160

32

180

135

100

78

18

4-φ18

270

180

40

200

145

110

85

18

4-φ18

300

200

50

250

160

125

100

20

4-φ18

357

240

65

265

180

145

120

22

8-φ18

376

240

80

280

195

160

135

22

8-φ18

434

280

100

300

230

190

160

24

8-φ23

502

300

125

325

270

220

188

28

8-φ25

613

320

150

350

300

250

218

30

8-φ25

675

320

200

400

360

310

278

34

12-φ25

819

400

250

450

425

370

332

36

12-φ30

968

450

300

500

485

430

390

40

16-φ30

1144

500

350

550

550

490

448

44

16-φ34

1280

500

400

600

610

550

505

48

16-φ34

1451

560

450

650

660

600

555

50

20-φ34

1542

600

500

700

730

660

610

52

20-φ41

1678

640

600

800

840

770

718

56

20-φ41

1875

720

700

900

955

875

815

60

24-φ28

2082

800

800

1000

1070

990

930

64

24-φ28

2403

950

900

1100

1180

1090

1025

66

28-φ54

2952

1000

1000

1200

1305

1210

1140

68

28-φ58

3244

1000