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Dual Plate Wafer Type Check Valve

The dual plate wafer type check valve is made up of valve body, discs, stem and springs, and is connected by wafer type. Due to the short closing stroke of the valve discs and the springs' attached, the water hammer phenomenon can be significantly reduced. It is mainly used for water supply and drainage pipe networks of municipal, industrial and high-rise buildings. Because its structural length is shorter than that of general check valves, it is convenient to install.


ANSI 125 Dual Plate Wafer Type Check Valve  Dimensions

Size

A

B

C

D

E

L

Weight

Kg

inch

mm

inch

mm

inch

mm

inch

mm

inch

mm

inch

mm

inch

Mm

2

50

41/8

105

29/16

65

17/32

20

17/8

48

25/16

59

21/8

54

1.5

65

47/8

124

35/32

80

115/16

49

23/8

60

31/16

78

21/8

54

2.9

3

80

53/8

137

311/16

94

215/16

76

23/4

70

337/64

91

21/4

57

2.1

4

100

67/8

175

45/8

117

33/4

97

315/32

88

45/16

110

21/2

64

4

5

125

73/4

197

511/16

145

411/16

121

417/32

115

519/32

142

23/4

70

5

6

150

83/4

222

611/16

170

55/8

145

59/32

134

611/16

170

3

76

7

8

200

11

279

813/16

224

711/16

193

75/32

182

83/4

222

33/4

95

12.5

10

250

133/8

340

107/16

265

95/8

239

83/4

223

1025/64

264

41/4

108

24

12

300

161/8

410

123/16

310

101/4

259

101/4

260

123/16

310

55/8

143

40

14

350

173/4

451

143/16

360

109/16

274

1113/16

300

143/16

360

71/4

184

48

16

400

201/4

514

161/4

410

131/2

331

14

355

165/16

414

71/2

191

63

18

450

215/8

549

173/4

450

141/2

369

15

382

1723/32

450

8

203

82

20

500

237/8

606

197/8

505

163/8

423

171/8

435

197/8

505

83/8

213

100

24

600

281/4

718

249/16

624

215/8

545

213/32

536

2313/16

605

83/4

222

230

30

750

343/8

873

301/2

775

261/4

667

263/4

680

301/8

765

12

305

381

36

900

407/8

1038

367/16

925

309/16

776

321/4

820

36

915

141/2

368

586

42

1050

475/8

1210

427/16

1078

3613/16

935

373/4

960

4115/16

1065

17

432

939

48

1200

541/8

1375

4811/32

1228

403/16

1021

435/16

1100

48

1220

205/8

524

1304


Dual Plate Wafer Type Check Valve VS Swing Check Valve

1. Material(similarity):

Both can be made from cast iron, ductile iron, cast steel as well as stainless steel


2. Water hammer pressure:

Wafer type check valve has less water hammer pressure than that of swing check valve.


3. Dimensions & Weight:

The dual plate check valve enjoys short face to face dimension, less weight. While, the swing check valves has longer face to face dimension and  is heavier.


4. Installation (similarity and difference):

The dual plate wafer check valve is designed to be clamped between two flanges. And the Swing type check valve can installed to the piping by threaded bolts and flanges. Both valves can be installed vertically or horizontally.


5. Open pressure:

the dual plate wafer check valve can open fully at lower pressure. While the swing check valve need higher pressure to open completely.


6. Liability:

The dual plate wafer check valve is more liable compared with swing check valve due to its simple structure and less wallop during when being closed.


Dual Plate Wafer Type Check Valve FAQs

Q 1. How does a dual plate wafer type check valve work?
A.

The discs of a wafer type check valve opens under the action of fluid pressure, and the fluid flows from the inlet side to the outlet side. When the inlet side pressure is lower than the outlet side, the valve discs automatically closes under the action of the fluid pressure difference and the power of springs to prevent the fluid from flowing backwards.


Q 2.How many types of check valves are there?
A.

There' re swing check valve, lift check valve, dual plate wafer type check valve etc.


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