American standard flanged check valve

The American standard check valve produced by our company is designed and manufactured in full accordance with American standards, with a beautiful and advanced structure. 

 American standard check valve refers to the valve that automatically opens and closes the valve disc by relying on the flow of the medium itself to prevent the backflow of the medium, also known as reverse check valve, one-way valve and reverse flow valve. Its main function is to prevent the backflow of the medium, prevent the reversal of the pump and driving motor, and the discharge of the container medium.


Products and services that meet fluid control requirements

Each process, each facility, and each environmental constraint has its own special requirements. Therefore, Dongyan offers a comprehensive range of products covering different performance levels, pressures, different functions and different materials.

Detail

Usage and Performance Specifications

[Performance Parameters]

NO.

Project Name

Parameter

1

Nominal pressure PN(MPa)

150LB

300LB

600LB

900LB

1500LB

2500LB

2.0

5.0

10.0

15.0

25.0

42.0

2

Shell strength test pressure

1.5 Times the nominal pressure at normal temperature

3

High-pressure sealing test pressure

1.1 Times the nominal pressure at normal temperature

4

Working pressure at normal temperature

In accordance with ASME B16.34 pressure and temperature ratings


Product Specifications

Design standard

Structural length

Flange connection dimensions

Testing and Inspection

Pressure and temperature reference

API6D/ASME B16.34

ASME B16.10

ASME B16.5

API598/API6D

ASME B16.34


【 Main Component Materials 】

Part name

Material name

Valve body

A216 WCB

A217 WC6

A351 CF8

A351 CF8M

A351 CF3

A351 CF3M

Valve cover

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

本体/STL

本体/STL

本体/STL

本体/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℃

Applicable medium

Water, steam

Water, steam

Weak corrosiveness

Weak corrosiveness

Weak corrosiveness

Weak corrosiveness


Main external dimensions 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


Structural Image

美标不锈钢止回阀.jpg

Product Application Scope

These devices are suitable for accurately controlling media such as gases, liquids, steam, etc., and maintaining process parameters such as pressure, flow rate, temperature, and liquid level at given values. Especially suitable for work environments where the allowable pressure difference is small and the allowable leakage is also small, and the pressure difference is not significant.

Related Products
Home
Products
Contact