Part name

Material Science

valve body

Cast iron, cast steel, stainless steel, alloy steel, chromium molybdenum steel

Disc

Cast steel, alloy steel (chrome plated), stainless steel, chrome molybdenum steel

Seal ring

Stainless steel, poly grease, anti-wear material

The stem

2Cr13、1Cr13Stainless steel, chrome molybdenum steel

filler

Flexible graphite

Nominal diameter

Structure length

Dimensions (reference values)

Connection dimensions (standard values)

(standard value)

H

Dt373H

Dt673H

D973H

PN4.0MPa

millimeter

inch

L

H1

A1

B1

H2

A2

B2

H3

A3

B3

D1

Z-d

50

2

43

112

350

180

200

625

250

170

530

250

255

125

4-18

65

2 1/2

46

115

370

270

280

625

250

170

530

250

255

145

8-18

80

3

49

120

380

270

280

645

250

170

565

250

255

160

8-18

100

4

56

138

420

270

280

675

250

170

600

250

255

190

8-22

125

5

64

164

460

380

420

715

450

220

640

250

255

220

8-26

150

6

70

175

555

380

420

800

450

220

705

300

315

250

8-26

200

8

71

208

605

450

470

850

450

220

775

300

315

320

12-30

250

10

76

243

680

450

470

925

450

280

945

300

315

385

12-33

300

12

83

283

825

450

470

1035

650

280

1070

300

315

450

16-33

350

14

92

310

900

480

490

1070

650

280

1140

300

315

510

16-36

400

6

102

340

980

480

490

1190

650

280

1210

300

315

585

16-39

450

8

114

380

1030

640

660

1335

575

714

610

20-39

500

20

127

410

1105

640

660

1415

575

714

670

20-42

Nominal diameter

DN(mm)

50~1200

Nominal pressure

PN(MPa)

0.6

1.0

1.6

2.5

4.0

Test pressure
Ps(MPa)

強(qiáng)度試驗(yàn)

0.9

1.5

2.4

3.75

6.0

密封試驗(yàn)

0.66

1.1

1.76

2.75

4.4

氣密封試驗(yàn)

0.6

0.6

0.6

0.6

0.6

Applicable medium

Water, steam, oil, acid corrosion, etc.。

Applicable temperature

carbon steel：-29℃~425℃ Stainless steel：-40℃~600℃