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Design and production

Length of structure

Flange size

Pressure-Temperature

Experiment-test

GB12235

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

Seal test

1.8

2.8

4.4

7.04

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 (ring)

packing

Operating temperature ℃

Medium

WCB

1Cr13

13Cr
STL
body material 
PTFE
Nylon

Reinforced Flexible Graphite 
1Cr13/ Flexible Graphite 
08 soft steel 
0Cr18Ni9Ti
0Cr18Ni12Mo2Ti
XS550F(T)
PTFE

Flexible Graphite 
Reinforced Flexible Graphite 
SFB/260
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

1.6MPa

DN

L

D

D1

D2

b

N-φd

H

D0

J41H
J41Y
J41W
J41F
J41N

16C
16P
16R
161

10

130

90

60

40

14

4-φ14

198

120

15

130

95

65

45

14

4-φ14

218

120

20

150

105

75

55

14

4-φ14

258

140

25

160

115

85

65

14

4-φ14

275

140

32

180

135

100

78

16

4-φ18

280

160

40

200

145

110

85

16

4-φ18

330

180

50

230

160

125

100

16

4-φ18

350

200

65

290

180

145

120

18

4-φ18

370

280

80

310

195

160

135

20

8-φ18

400

280

100

350

215

180

155

20

8-φ18

415

320

125

400

245

210

185

22

8-φ18

460

360

150

480

280

240

210

24

8-φ23

510

450

200

600

335

295

265

26

12-φ23

710

500

250

650

405

355

320

30

12-φ25

786

550

300

750

460

410

375

30

12-φ25

925

600

2.5MPa

DN

L

D

D1

D2

b

N-φd

H

D0

J41H
J41Y
J41W
J41F
J41N

25
25P
25R
251

10

130

90

60

40

16

4-φ14

198

120

15

130

95

65

45

16

4-φ14

218

120

20

150

105

75

55

16

4-φ14

258

140

25

160

115

85

65

16

4-φ14

275

140

32

180

135

100

78

18

4-φ18

280

160

40

200

145

110

85

18

4-φ18

330

180

50

230

160

125

100

20

4-φ18

350

200

65

290

180

145

120

22

8-φ18

400

280

80

310

195

160

135

22

8-φ18

355

280

100

350

230

190

160

24

8-φ23

415

320

125

400

270

220

188

28

8-φ25

460

360

150

480

300

250

218

30

8-φ25

510

450

200

600

360

310

278

34

12-φ25

710

500

250

650

425

370

332

36

12-φ30

786

550

300

750

485

430

390

40

16-φ30

925

600