Vertical Check Valve

The oxygen specific shut-off valve is made of high-quality silicon brass or stainless steel casting, which has the advantages of high mechanical strength, wear resistance, and good safety. Used on oxygen pipelines, it has effective explosion-proof and flame-retardant properties, eliminating unsafe factors on oxygen pipelines.

Key words:

Classification:

Keyword: Vertical Check Valve

Details

Vertical Check Valve: Applications and Features;
  Zhejiang Kewo Valve Co., Ltd.'s vertical check valves are rigorously designed and manufactured according to the GB12235 standard. The valve disc moves vertically along a central guide, while the bushing is crafted from a special material that offers excellent wear resistance and a low coefficient of friction, ensuring smooth, reliable operation and superior sealing performance. These products are widely used in pipelines across various industrial applications, including petroleum, chemical, pharmaceutical, and power industries.

Main performance specifications for vertical check valves;

 

Model

Nominal
Pressure

Test pressure

Operating Temperature (°C)

Strength
(Water) MPa

Sealing
(Water) Air (MPa)

Low-pressure sealing
(Air) MPa

H42H-16

1.6

2.4

1.8

0.6

≤200

H42H-25

2.5

3.8

2.8

0.6

≤200

H42H-40

4.0

6.0

4.4

0.6

≤200

 

Vertical check valve execution standard;
Design and Manufacturing: GB/T12235
Structural length: GB/T12221
Flange Connection: JB/T79-1994 HG/T20592
Testing and Inspection: JB/T9092-1999 GB/T26480

Vertical check valves—main connection and overall dimensions

Model

Nominal Diameter DN

Dimensions (mm)

L

D

D1

D2

H

b

Z-Φd

 

 

 

 

 

H42H-16

15

130

95

65

45

77

14

4-14

20

150

105

75

55

77

14

4-14

25

160

115

85

65

80

16

4-14

32

180

135

100

78

85

16

4-18

40

200

145

110

85

95

16

4-18

50

230

160

125

100

105

16

4-18

65

290

180

145

120

120

18

4-18

80

310

195

160

135

130

20

8-18

100

350

215

180

155

140

20

8-18

125

400

245

210

185

155

22

8-18

150

480

280

240

210

180

24

8-23

200

600

335

295

265

215

26

12-23

 

 

 

 

 

 

H42H-25

15

130

95

65

45

77

16

4-14

20

150

105

75

55

80

16

4-14

25

160

115

85

65

85

16

4-14

32

180

135

100

78

95

18

8-18

40

200

145

110

85

105

18

8-18

50

230

160

125

100

120

20

8-18

65

290

180

145

120

130

212

8-18

80

310

195

160

135

140

22

8-18

100

350

230

190

160

155

24

8-23

125

400

270

220

188

180

28

8-25

150

480

300

250

218

215

30

8-25

200

600

360

310

278

973

34

12-25

The oxygen specific shut-off valve is made of high-quality silicon brass or stainless steel casting, which has the advantages of high mechanical strength, wear resistance, and good safety. Used on oxygen pipelines, it has effective explosion-proof and flame-retardant properties, eliminating unsafe factors on oxygen pipelines.

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