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Oxygen special check valve
Product model: h44h
Nominal diameter: DN15 ~ dn200mm
Nominal pressure: pn0.6 ~ 10.0MPa
Applicable medium: oxygen
Working temperature: normal temperature
Connection type: flange
Main materials: stainless steel, alloy steel, etc
Product details

Oxygen special check valve service characteristics

Oxygen is special check valve is a kind of oxygen pipe network special valve. It not only have the functions of ordinary check valve has good flame retardancy, conductive performance is good, compact structure, prevent oil, safe and reliable, etc. With the development of metallurgical industry. Stainless steel swing check valve with oxygen is special ball valve is widely used in steel, metallurgy, medicine, chemical industry, etc

(1) chemical, petrochemical production of weak corrosive materials, such as: water, ammonia, oil, hydrocarbons, etc. 

(2) Corrosive materials in chemical production, such as: caustic soda, soda, concentrated dilute sulfuric acid, carbonic acid, acetic acid, ester acid, etc. 

(3) cryogenic materials in refrigeration, such as: liquid methane, liquid ammonia, liquid oxygen and various refrigerants. 

(4) light industrial food, pharmaceutical production of health requirements of materials, such as: beer, beverages, dairy products, food pulp medical supplies. 

(5) High efficiency and precision filters of various special processes.


I. main technical parameters of oxygen special check valve

Nominal pressure

1.6

2.5

4.0

6.4

10.0

16.0

strength test

2.4

3.8

6.0

9.6

15.0

24.0

Water seal test

1.8

2.8

4.4

6.4

10.0

16.0

Airtight seal test

0.4-0.7


II.Materials for main parts of oxygen special check valve

Body, cover and plate

Guide sleeve

Pin shaft

Gaskets

Sealing surface

Medium temperature℃

Applicable medium

WCB

WCB

1Cr13

Flexible graphite
1Cr13/Flexible graphite
Stainless steel/Acid asbestos
PTFE
The tooth type Gaskets

13Cr
STL
Body material
nylon

≤425

Steam oil products

WC6

WC6

≤540

WC9

WC9

≤570

ZGCr5Mo

2GCr5Mo

≤550

ZG1Cr18Ni9Ti

ZG1Cr18Ni9Ti

1Cr18Ni9Ti

≤200

Acetic acid class

ZG1Cr18Ni12
Mo2Ti

ZG1Cr18Ni12
Mo2Ti

1Cr18Ni12
Mo2Ti

≤200

Acetic acid class


III.Main dimensions of oxygen special check valve

DN

L

D

D1

D2

D6

b

n-φd

H

Weight

H44H H44W H44Y 16 16P 16R

50

230

160

125

100

-

16

4-18

136

16

65

290

180

145

120

-

18

4-18

142

20

80

310

195

160

135

-

20

8-18

165

29

100

350

215

180

155

-

20

8-18

180

32

125

400

245

210

185

-

22

8-18

210

65

150

480

280

240

210

-

240

8-23

233

98

200

495

335

295

265

-

26

12-23

304

160

250

622

405

355

320

-

30

12-25

348

255

300

698

460

410

375

-

30

12-25

390

295

350

850

520

470

435

-

34

16-25

430

-

400

914

580

525

485

-

36

16-30

468

388

500

1150

705

650

608

-

44

20-34

525

-


Oxygen special check valve H44H H44W H44Y 25 25P 25R

50

230

160

125

100

-

20

4-18

160

21

65

290

180

145

120

-

22

8-18

175

28

80

310

195

160

135

-

22

8-18

185

37

100

350

230

190

160

-

24

8-23

220

56

125

400

270

220

188

-

28

8-25

248

92

150

480

300

250

218

-

30

8-25

276

129

200

533

360

310

278

-

340

12-25

350

210

250

622

425

370

332

-

36

12-30

410

295

300

711

485

430

390

-

40

16-30

430

368

350

850

550

490

448

-

44

16-34

518

-

400

864

610

550

505

-

48

18-34

560

460

500

1150

730

660

610

-

52

20-41

618

-


Oxygen special check valve H44H H44W H44Y 40 40P 40R 40I

50

230

160

125

100

88

20

4-18

160

25

65

290

180

145

120

110

22

8-18

175

30

80

310

195

160

135

121

22

8-18

185

38

100

350

230

190

160

150

24

8-23

220

57

125

400

270

220

188

176

28

8-25

248

90

150

480

300

250

218

204

30

8-25

270

150

200

533

375

320

282

260

38

12-30

350

220

250

622

445

385

345

313

42

12-34

410

360

300

711

510

450

408

364

46

16-34

430

440

350

838

570

510

465

422

52

16-34

518

500

400

864

655

585

535

474

58

16-41

560

580


Oxygen special check valve H44H H44W H44Y 64 64P 64R 64I

50

300

175

135

105

88

26

4-23

177

30

65

340

200

160

130

110

28

8-23

197

40

80

380

210

170

140

121

30

8-23

212

50

100

430

250

200

168

150

32

8-25

248

80

125

500

295

240

202

176

36

8-30

296

120

150

550

340

280

240

204

38

8-34

330

180

200

650

405

345

300

260

44

12-34

385

250

250

775

470

400

352

313

48

12-41

445

380

300

900

530

460

412

364

54

16-41

474

510

350

1205

595

525

475

422

60

16-41

514

690

400

1150

670

585

525

474

66

16-48

616

1010


Oxygen special check valve H44H H44W H44Y 100 100P 100R 100I

50

300

195

145

112

88

28

4-25

210

31

65

340

220

170

138

110

32

8-25

227

41

80

380

230

180

148

121

34

8-25

235

52

100

430

265

210

172

150

38

8-30

274

83

125

500

310

250

210

176

42

8-34

307

125

150

550

350

290

250

204

46

12-34

347

195

200

650

430

360

312

260

54

12-41

402

230

250

775

500

430

382

313

60

12-41

432

450

300

900

585

500

442

364

70

16-48

484

740

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