• Double stem wafer butterfly valve
  • Double Stem Wafer Butterfly Valve
  • Double Stem Wafer Butterfly Valve

Double Stem Wafer Butterfly Valve

Features: DN: 2~20"(DN50~DN500)
Nominal pressure: PN10, PN16, Class125
Body Materials: Cast Iron, Ductile Iron, WCB , Stainless Steel, Bronze
Seat Materials: NBR, EPDM, VITON, PTFE
Disc Materials: Ductile Iron, WCB, CF8,CF8M, Al-bronze C958
tem Materials: S SS416, SS304, SS316
End Connection: Wafer

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  • Product parameter
  • Adoptive standards
  • Features
  • Application
  • Inquiry

Product parameter:

 

  

DN

øD1

øD2

øD3

øD4

øD5

øD6

□T

ød

N-M

A

B

C

D

4- ød1

mm

mm

mm

mm

mm

mm

mm

mm

mm

mm

mm

mm

mm

mm

mm

40

42.3

110

86

50

65

12.6

9

18

4-M16

212

110

32

32

7

50

52.6

125

100

50

65

12.6

9

18

4-M16

273

161

32

43

7

65

64.3

145

120

50

65

12.6

9

18

4-M16

296

175

32

46

7

80

78.8

160

127

50

65

12.6

9

18

8-M16

308

181

32

46

7

100

104

180

156

70

90

15.77

11

18

8-M16

346

200

32

52

10

125

123.3

210

190

70

90

18.92

14

18

8-M16

372

213

32

56

10

150

155.7

240

212

70

90

18.92

14

22

8-M20

397

226

32

56

10

200

202.4

295

268

102

125

22.1

17

22

8-M20

480

260

45

60

12

250

250.4

350

325

102

125

28.45

19

22

12-M20

540

292

45

68

12

300

301.5

400

376

102

125

31.6

22

22

12-M20

624

337

45

78

12

350

333.3

460

436

102

125

31.6

22

22

16-M20

680

368

45

78

12

400

389.6

515

488

140

175

33.15

24

26

16-M24

763

400

51

102

18

450

440.5

565

539

140

175

37.95

27

26

20-M24

800

422

51

114

18

500

491.6

620

593

140

175

41.12

36

26

20-M24

897

480

57

127

18

 

Adoptive standards:

 

Name  Material
Body CI/DI
Bushing polymer
Seat EPDM/NBR/PTFE
Disc DI/CF8/CF8M/Al-bronze
Stem SS416/SS304/SS316
Pin  SS316/SS416
Disc type Double stem 
O-ring NBR

Features:

1.Single Eccentric Disc-Shaft
2.Anti-Blow Out Stem
3.Bi-Directional
4.Fire safe Design
5.Low Friction Body Seat
6.Zero Leakage

Why Choose Us:
1.We promise no leakage and breakage for valves. Every butterfly valve will test for 2 times test pressure before leave factory. We will replace the valve if there is quality problem within 24 months guarantee period.
2.We obtained ISO9001 quality system certification.We inspect the parts of valve carefully, 48 produce steps, try to supply you ideal valve.
3.We can supply different kinds of materials according to customers' requests,such as DI,cast steel,SS304,SS316 body and disc. EPDM,NBR,PTFE,Viton etc. Enough stock ensure fast delivery.
4.We have more than 150 types body moulds, which include ISO,DIN,ANSI,BS standard.
5.We own full-automatic machine paint line, match high-temperature baking house,which makes smooth paint and good appearance of valve.

Standard Test :
Body Test: 1.5 times the working pressure with water. This test is performed after valve assembly and with disc in half position open, it is called as a body hydro test.
Seat Test: 1.1 times the working pressure with water.
Function / Operation Test: At the time of final inspection, each valve and its actuator (Flow-Control Lever / Gear / Pneumatic Actuator), under goes a complete operating test (Open/Close). This test carried out without pressure and at ambient temperature.
Special Test: On request, any other test can be carried out according to special instruction by client.

 

Application:

1.Water Treatment Plant ;
2.Drilling Rigs;
3.Paper Industry;
4.Gas Plant;
5.Sugar Industry;
6.Cooling Water Circulation;
7.Breweries;
8.Heating & Air Conditioning;
9.Chemical Industry;
10.Pneumatic Conveyors;
11.Waste Effluent Treatment Plant;
12.Compressed Air.

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