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Check valve

Product Overview

National standard lifting check valve is suitable for the pipeline with nominal pressure PN1.6-16.0MPa and operating temperature -46~55℃ in petroleum, chemical industry, pharmaceutical industry, chemical fertilizer, electric power industry and other working conditions to prevent the backflow of media.

Structural characteristics

1. Reasonable product structure, reliable sealing, excellent performance and beautiful appearance;
2, the surface welding Co base hard alloy, wear resistance, corrosion resistance, abrasion resistance, long service life;
3. The built-in pin shaft structure reduces the leakage point and ensures reliable use;
4. When the pressure is ≥ 16.0mpa, the valve cavity adopts self-tightening sealing structure. The higher the medium pressure is, the better the sealing performance will be.
5. The material, flange and butt welding end size of the parts can be reasonably selected according to the actual working conditions or user requirements to meet various engineering needs.

Execution standard

Pressure and temperature class: GB/T 12224
Structure length: GB/T 12221, GB/T 15188
Flange type dimensions: GB/T 9113, JB/T 79
Butt end connection: GB/T 12224
Inspection and test: JB/T 9092 GB/T13927

Performance parameter

Nominal diameter: DN15~300mm
Nominal pressure: PN1.6-16.0MPa
Applicable temperature: -46~55℃
Main material: forged steel
Suitable medium: water, oil, steam, nitric acid, acetic acid, etc
Application: applicable to petroleum, chemical, pharmaceutical, chemical fertilizer, power industry, low temperature and other conditions of the pipeline.

Product Dimensions

DN(mm)
L
D
D1
D2
b
Z-Φd
H
WT(kg)

H41H-16C H41W-16P/PL H41W-16R/RL H41Y-16I

15

130

95

65

45

14

4-Φ14

77

3

20

150

105

75

55

14

4-Φ14

77

4

25

160

115

85

65

14

4-Φ14

80

5

32

180

135

100

78

16

4-Φ18

85

7

40

200

145

110

85

16

4-Φ18

95

9

50

230

160

125

100

16

4-Φ18

105

10

65

290

180

145

120

18

4-Φ18

120

20

80

310

195

160

135

20

8-Φ18

130

30

100

350

215

180

155

20

8-Φ18

140

39

125

400

245

210

185

22

8-Φ18

155

50

150

480

280

240

210

24

8-Φ23

180

70

200

600

335

295

265

26

12-Φ23

215

161

250

650

405

355

320

30

12-Φ25

260

251

300

750

460

410

375

34

12-Φ25

315

395

H41H-25C H41W-25P/PL H41W-25R/RL H41Y-25I

15

130

95

65

45

16

4-Φ14

100

3.4

20

150

105

75

55

16

4-Φ14

105

5

25

160

115

85

65

16

4-Φ14

120

5.7

32

180

135

100

78

18

4-Φ18

130

9.1

40

200

145

110

85

18

4-Φ18

135

11.8

50

230

160

125

100

20

4-Φ18

149

14.4

65

290

180

145

120

22

4-Φ18

160

23

80

310

195

160

135

22

8-Φ18

169

30

100

350

230

190

160

24

8-Φ23

194

44

125

400

270

220

188

28

8-Φ25

222

65

150

480

300

250

218

30

8-Φ25

255

99

200

600

360

310

278

34

12-Φ25

305

190

250

650

425

370

332

36

12-Φ30

355

315

300

750

485

430

390

40

12-Φ30

410

450


DN(mm)

L

D

D1

D2

D6

b

Z-Φd

H

WT(kg)

H41H-40C H41W-40P/R/PL/RL H41Y-40I

15

130

95

65

45

40

16

4-Φ14

100

4

20

150

105

75

55

51

16

4-Φ14

105

5.5

25

160

115

85

65

58

16

4-Φ14

120

6

32

180

135

100

78

66

18

4-Φ18

130

12

40

200

145

110

85

76

18

4-Φ18

135

14

50

230

160

125

100

88

20

4-Φ18

149

18

65

290

180

145

120

110

22

8-Φ18

160

27

80

310

195

160

135

121

22

8-Φ18

169

36

100

350

230

190

160

150

24

8-Φ23

194

50

125

400

270

220

188

176

28

8-Φ25

225

75

150

480

300

250

218

204

30

8-Φ25

255

119

200

600

375

320

282

260

38

12-Φ30

305

217

250

650

445

385

345

313

42

12-Φ34

360

310

300

750

510

450

408

364

46

12-Φ34

415

365


DN(mm)

L

D

D1

D2

D6

b

Z-Φd

H

WT(kg)

H41H-64C H41W-64P/R/PL/RI H41Y-64I

15

170

105

75

55

40

20

4-Φ14

100

7

20

190

125

90

68

51

22

4-Φ18

110

11

25

210

135

100

78

58

24

4-Φ18

125

13

32

230

150

110

82

66

24

4-Φ23

140

14

40

260

165

125

95

76

24

4-Φ23

168

20

50

300

175

135

105

88

26

4-Φ23

170

23

65

340

200

160

130

110

28

8-Φ23

188

37

80

380

210

170

140

121

30

8-Φ23

205

46

100

430

250

200

168

150

32

8-Φ25

230

68

125

500

295

240

202

176

36

8-Φ30

203

89

150

550

340

280

240

204

38

8-Φ34

265

131

200

650

405

345

300

260

44

12-Φ34

310

235

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