API Check Valve
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Name:

API Check Valve

Category:

Check valve

Remark:

The API standard check valve produced by our company is designed and manufactured in full accordance with the United States standards, beautiful structure and advanced. American standard check valve is to rely on the flow of the medium itself and automatically open and close the valve flap, used to prevent media back to the valve, also known as check valve, check valve, counter-flow valve, its main role is to prevent media backflow, to prevent the pump And drive motor reverse, as well as the release of container media.

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Product Usage
The API standard check valve produced by our company is designed and manufactured in full accordance with the United States standards, beautiful structure and advanced. American standard check valve is to rely on the flow of the medium itself and automatically open and close the valve flap, used to prevent media back to the valve, also known as check valve, check valve, counter-flow valve, its main role is to prevent media backflow, to prevent the pump And drive motor reverse, as well as the release of container media.


Performance parameters

Serial number

project name

parameter

1

Nominal pressurePN(MPa)

150LB

300LB

600LB

900LB

1500LB

2500LB

2.0

5.0

10.0

15.0

25.0

42.0

2

Shell strength test pressure

Nominal pressure at room temperature 1.5 times

3

High pressure seal test pressure

Nominal pressure at room temperature 1.1 times

4

Working pressure at room temperature

Press the ASME B16.34 pressure and temperature rating

 

Product specifications

design standards

Structure length

Flange connection size

Test and inspection

Pressure and temperature reference

API6D/ASME B16.34

ASME B16.10

ASME B16.5

API598/API6D

ASME B16.34

 

The main part material

Part Name

Material name

Body

A216 WCB

A217 WC6

A351 CF8

A351 CF8M

A351 CF3

A351 CF3M

cap

A216 WCB

A217 WC6

A351 CF8

A351 CF8M

A351 CF3

A351 CF3M

Valve plate

A216 WCB

A217 WC6

A351 CF8

A351 CF8M

A351 CF3

A351 CF3M

Sealing surface

13Cr/STL

STL

Body / STL

Body / STL

Body / STL

Body / STL

Valve shaft

A182 F6a

A182 F11

A182 F304

A182 F316

A182 F304L

A182 F316L

Gasket

Flexible graphite

Flexible graphite

Flexible graphite

Flexible graphite

Flexible graphite

Flexible graphite

bolt

A193 B7

A193 B16

A193 B8

A193 B8M

A193 B8

A193 B8M

Nut

A194 2H

A194 4

A194 8

A194 8M

A194 8

A194 8M

Operating temperature

-29~425℃

-29~540℃

-46~425℃

-46~425℃

-46~425℃

-46~425℃

Suitable media

steam

steam

Weak corrosive

Weak corrosive

Weak corrosive

Weak corrosive

 

The main shape and connection dimensions

Nominal diameter

size

m

in

L

D

D1

D2

b

f

n-Φd

H

H44H-150Lb

50

2

203

152

120.5

92

16

1.6

4-19

180

80

3

241

192

152.5

127

19

1.6

4-19

190

100

4

297

229

190.5

157

24

1.6

8-19

203

125

5

330

254

216

186

24

1.6

8-22

229

150

6

356

279

241.5

216

26

1.6

8-22

257

200

8

495

342

298.5

270

29

1.6

8-22

292

250

10

622

406

362

324

31

1.6

12-25

355

300

12

698

483

432

381

32

1.6

12-25

396

H44H-300Lb

50

2

267

165

127

92

23

1.6

8-19

178

80

3

318

210

168.5

127

29

1.6

8-22

216

100

4

356

254

200

157

32

1.6

8-22

241

125

5

400

279

235

186

35

1.6

8-22

267

150

6

444

318

270

216

37

1.6

12-22

305

200

8

533

381

330

270

42

1.6

12-25

368

250

10

622

445

387

324

48

1.6

16-29

394

300

12

711

521

451

381

51

1.6

16-32

445

H44H-600Lb

50

2

295

165

127

92

33

6.4

8-19

203

80

3

359

210

168

127

36

6.4

8-22

235

100

4

435

273

216

157

45

6.4

8-25

286

125

5

511

330

266.5

186

52

6.4

8-29

292

150

6

562

356

292

216

55

6.4

12-29

330

200

8

664

419

349

270

63

6.4

12-32

381

250

10

791

510

432

324

71

6.4

16-35

457

300

12

842

559

489

381

74

6.4

20-35

584

 

Structure picture


 

Inquiry

If you have any enquiry about quotation or cooperation,please feel free to email us at info@cnlg-valve.com or use the following enquiry form. Our sales representative will contact you within 24 hours. Thank you for your interest in our products.