1.6MPa

shell

2.4MPa

seat

1.76MPa

suitable medium

water,oil,steam

temperature

≤200°C

Model

L

D

D1

D2

B

f

n-d

15

130

95

65

46

14

2

4-14

20

150

105

75

56

16

2

4-14

25

160

115

85

65

16

3

4-14

32

180

140

100

76

18

3

4-19

40

200

150

110

84

18

3

4-19

50

230

165

125

99

20

3

4-19

65

290

185

145

118

20

3

4-19

80

310

200

160

132

22

3

8-19

100

350

220

180

156

24

3

8-19

125

400

250

210

184

26

3

8-19

150

480

285

240

211

26

3

8-23

200

600

340

295

266

30

3

12-23

250

730

405

355

319

32

3

12-28

300

850

460

410

370

32

4

12-28

10

bolt

steel

DIN17100 RSt37-2

GB700-88 Q235

9

bonnet

cast iron

DIN1691 GG25

GB9439-88 HT250

8

gasket

graphite

GB3518-83 LC35-999

7

nut

steel

DIN17100 RSt37-2

GB700-88 Q235

6

bushing

brass

DIN17656 Cu-Zn39Pb2

YB146-71 HPb59-1

5

spring

stainless steel

DIN17440 X5CrNi189

GB1220-92 0Cr19Ni9

4

disc

cast iron

DIN1691 GG25

GB9439-88 HT250

3

disc seat ring

stainless steel

DIN17440 X20Cr13

GB1220 2Cr13

2

body seat ring

stainless steel

DIN17440 X20Cr13

GB1220 2Cr13

1

body

cast iron

DIN1691 GG25

GB9439-88 HT250

NO.

Name of part

Material

Germany standard

Chinese standard