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Large Size Double Flanged Butterfly Valve

Size Range: DN50-DN2000

Body Style: Flange

Pressure: PN10, PN16, Class125, JIS10K

Body Material: CI/DI/WCB

Disc Material: DI/WCB/CF8/CF8M

Stem Material: SS410,SS304,SS316

Seat Material: Lined EPDM/NBR

Disc Type: One stem

Handle: Gearbox

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OVERVIEW

Large Size Double Flanged Butterfly Valve

Features

1.Center line disc   
2.Anti-Blow Out Stem
3.Low Friction Body Seat
4.Zero Leakage
5.Small in size  
6.Light in weight
7.Long service life   
8.Can be used in cutting off and regulation medium
9.Simple, compact structure, quick 90 degree on-off operation

Parameters
 

DN

A

B

b

f

D

K

d

F

N*d0

L

L1

D1

D2

N*d1

J

X

L2

Φ2

50

83

120

19

3

165

125

99

13

4*Φ19

108

111

65

50

4-Φ7

45

13.8

3

32

12.6

65

93

130

19

3

185

145

118

13

4*Φ19

112

115

65

50

4-Φ7

45

13.8

3

32

12.6

80

100

145

19

3

200

160

132

13

8*Φ19

114

117

65

50

4-Φ7

45

13.8

3

32

12.6

100

114

155

19

3

220

180

156

13

8*Φ19

127

130

90

70

4-Φ10

45

17.77

5

32

15.77

125

125

170

19

3

250

210

184

13

8*Φ19

140

143

90

70

4-Φ10

45

20.92

5

32

18.92

150

143

190

19

3

285

240

211

13

8*Φ23

140

143

90

70

4-Φ10

45

20.92

5

32

18.92

200

170

205

20

3

340

295

266

13

12*Φ23

152

155

125

102

4-Φ12

45

24.1

5

45

22.1

250

198

235

22

3

405

355

319

13

12*Φ28

165

168

125

102

4-Φ12

45

31.45

8

45

28.45

300

223

280

24.5

4

460

410

370

20

12*Φ28

178

182

125

102

4-Φ12

45

34.6

8

45

31.6

350

270

310

26.5

4

520

470

429

20

16*Φ28

190

194

150

125

4-Φ14

45

36.15

10

45

33.15

400

300

340

28

4

580

525

480

20

16*Φ31

216

221

175

140

4-Φ18

45

40.95

10

51

37.95

450

340

375

30

4

640

585

530

20

20*Φ31

222

227

175

140

4-Φ18

45

45.96

12

51

42.86

500

355

430

31.5

4

715

650

582

22

20*Φ34

229

234

210

165

4-Φ22

45

49.22

14

57

45.72

600

410

500

36

5

840

770

682

22

20*Φ37

267

272

300

254

8-Φ18

22.5

57.98

15

70

53.98

700

478

560

39.5

5

910

840

794

30

24*Φ37

292

299

300

254

8-Φ18

22.5

71.35

18

66

63.35

800

529

620

43

5

1025

950

901

30

24*Φ41

318

325

350

298

8-Φ22

22.5

79

20

66

70

900

584

665

46.5

5

1125

1050

1001

34

28*Φ41

330

337

350

298

8-Φ22

22.5

90

22

118

80

1000

657

735

50

5

1255

1170

1112

34

28*Φ44

410

417

350

298

8-Φ22

22.5

100

25

142

90

1200

799

917

57

5

1485

1380

1328

34

32*Φ50

470

478

415

356

8-Φ33

22.5

117

28

150

105

1400

919

1040

60

5

1685

1590

1530

40

36*Φ50

530

538

415

356

8-Φ33

22.5

134

32

200

120

1500

965

1050

62.5

5

1820

1710

1630

40

36*Φ57

570

580

415

356

8-Φ32

22.5

156

36

200

140

1600

1045

1150

65

5

1930

1820

1700

50

40*Φ57

600

610

415

365

8-Φ32

22.5

156

36

200

140

1800

1156

1260

70

5

2130

2020

1914

55

44*Φ57

670

682

475

406

8-Φ40

22.5

178

40

280

160

2000

1350

1323

75

5

2345

2230

2130

55

48*Φ62

760

772

475

406

8-Φ40

22.5

178

40

280

160

Technology Standard

Adoptive Standards
Valve Design: API 609, MSS SP-67
Face To Face: API 609, MSS SP-67, DIN3202, BS EN558-1,JIS B2002
Pressure Test: API 598
Flange Drilling: ANSI B16.1 class125, BS4504 PN10/PN16, DIN2501 PN10/PN16/JIS10K
Top Flange: ISO5211

 

Test Standards
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. It ensures the correct operation of the valve / actuator assembly with accessories such as solenoid valve, limit switches, air filter regulator etc.
Special Test: On request, any other test can be carried out according to special instruction by client

Application

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

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