Double Eccentric Lug Butterfly Valve

Brand:aiwo/oem
Place Of Origin:Tianjin, China
Body material:ss316
Connection: lug
MOQ:1set/piece
Payment Method:L/C, D/A, D/P, T/T, Paypal
Supply Capacity:according to size 100-15000sets /pieces per month
Standard Packaging:Wooden box or customized

Product Specification

Double eccentric butterfly valves, also known as high-performance butterfly valves, have the shaft mounted slightly offset from the pipe centerline, and the shaft is mounted behind the sealing band of the seat. The seat is a narrow resilient band, clamped in the body and must be resilient. The double eccentric butterfly valve is resilient enough to seal, and the disc only wipes the seat for a few degrees at seating. This results in a lot less friction, meaning the seats can last longer. Metal seats are available for HP Butterfly valves allowing operation to around 1200F. Since the disc is offset from the shaft, there is a lot of metal in the flow stream in the wide-open position, and double-offset valves have somewhat less maximum capacity than flat-disc, non-offset valves. These valves are also position-seated. Unlike the lined valves, these valves can actually damage the seats if they are overstroked so they almost all have a travel-stop pin in the body.

Connection Dimension

DN(mm)

Face to Face Dimension(mm)

Outside Dimension(mm)

Approx.Wt.(kg)

DN

L(150LB)

L(300LB)

L(600LB)

H0

H

A

B

D0

Wafer(150LB)

Lug(150LB)

DN50

43

43

65

180

180

50

150

8

20

DN65

46

46

70

195

180

50

150

11

25

DN80

48

48

54

85

205

180

50

150

14

30

DN100

54

54

64

95

235

180

50

150

17

38

DN125

57

59

78

110

260

180

50

305

20

45

DN150

57

59

78

125

275

185

63

305

26

48

DN200

64

73

102

145

305

185

63

305

35

90

DN250

71

83

117

200

350

215

80

305

42

114

DN300

81

92

140

215

400

215

80

406

68

148

DN350

92

117

155

255

460

215

80

406

121

183

DN400

102

133

178

315

475

245

125

300

136

215

DN450

114

149

200

381

550

245

125

300

198

266

DN500

127

159

216

420

600

245

125

300

216

337

DN600

154

181

232

489

680

390

242

400

467

511

DN700

165

502

815

390

242

500

650

905

DN800

190

975

920

420

262

400

950

1221

DN900

203

1075

1020

420

262

400

1239

1576

DN1000

216

1175

1120

550

325

500

1785

2090

DN1200

254

1405

1340

550

325

500

1956

2227