Nominal pressure （ MPa）

Testing Pressure （ MPa）

Casing

seal（ Liquid ）

seal（air）

up seal

1.0

1.5

1.1

0.6

1.1

1.6

2.4

1.8

0.6

1.8

2.5

3.8

2.8

0.6

2.8

Casing material

Suitable medium

Suitable temperature ℃

carbon steel （ C type）

water、steam、oil

≤ 425

gray cast iron （ T type）

Chlorine、 sulfate

≤ 200

Ductile Cast Iron （ Q type）

liquefied natural gas 、 gas

≤ 300

stainless steel （ H type）

water、steam、oil

≤ 316

item name

Using standard

May elect standard

item name

Using standard

May electstandard

Design manufacture approval

DIN 3352

——

Design manufacture approval

GB/T 13927-1992

JB/T 9092-1999

Valve structural length

GB/T 12221-1989

ISO5752：88

Valve goods supply request

GB/T 12252

——

Valve flange connection

GB/T 17241.6-1998

——

valve Symbol

GB/T 12220-1989

IS0 5209：87

Serial number

parts name

material

1

body

spheroidal graphite cast iron / gray cast iron

2

seat

albronze alloy steel / stainless steel / hard metal

3

Wedge disc

Built-up welding bronze metal / stainless steel / hard metal

4

stem

stainless steel

5

In hexagon bolt

carbon steel

6

0 type seal

EPDM/NBR

7

disc

cast iron / Ductile Cast Iron

8

packing

PTFE/ graphite

9

gland nut

stainless steel / carbon steel

10

gland

cast iron / spheroidal graphite cast iron / carbon steel / stainless steel

11

Yoke

cast iron / spheroidal graphite cast iron / carbon steel / stainless steel

12

Bearing

alloy steel

13

stem nut

albronze alloy steel

14

key

carbon steel

15

nut

stainless steel / carbon steel

16

hand wheel

carbon steel / spheroidal graphite cast iron

MPa

DN

L

D 1

D 2

D 3

B

Z-? d

H

H1

D O

1.0

1.6

1.0

1.6

1.0

1.6

1.0/1.6

15

108

46

65

95

14

4-14

220

240

120

20

117

56

75

105

16

4-14

255

284

140

25

127

65

85

115

16

4-14

275

303

160

32

140

76

100

140

18

4-18

280

321

180

40

165

84

110

150

18

4-18

300

352

200

50

178

99

125

165

20

4-18

358

438

240

65

190

118

145

185

20

4-18

375

450

240

80

203

132

160

200

20

8-18

433

528

280

100

229

156

180

220

22

8-18

502

620

300

125

254

184

210

250

22

8-18

612

753

320

150

267

211

240

285

24

8-23

676

847

360

200

292

266

295

340

24

8-22

12-22

820

1039

400

250

330

320

350

355

395

405

26

12-22

12-26

969

1245

450

300

356

370

400

410

445

460

28

12-23

12-26

1142

1472

560

2.5

15

108

45

65

95

14

4-14

220

240

120

20

117

55

75

105

16

4-14

255

284

140

25

127

65

85

115

16

4-14

275

303

160

32

140

78

100

135

18

4-18

280

321

180

40

165

85

110

145

18

4-18

300

352

200

50

178

100

125

160

20

4-18

358

438

240

65

190

120

145

180

22

8-18

375

450

240

80

203

135

160

195

24

8-18

433

528

280

100

229

160

190

230

24

8-23

502

620

300

125

254

188

220

270

26

8-25

612

753

320

150

267

218

250

300

28

8-25

676

847

360

200

292

278

310

360

30

12-25

820

1039

400

250

330

332

370

425

32

12-30

969

1245

450

300

356

390

430

485

34

16-30

1142

1472

560