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CN | EN

Double eccentric butterfly valve

Technical Parameters

Fluid medium： Water, oil, gas and various corrosive media
Temperature Range： -10℃～120℃
Pressure Ratings： PN0.6～2.5MPa
Size Range： DN100～DN4000
Connection Type： Flanged
Connection standard： GB·ANSI·DIN·API·ISO·BS
Body Materials： Cast iron；Ductile iron；Anti-corrosion valve body components, blue epoxy resin coating
Valve seat material： 316 stainless steel
Valve plate material： Stainless steel；Ductile iron
Note： All parts can be made of different materials according to actual working conditions.

Product Details

Product Features

1.Double eccentric structure design, to avoid the wear of the sealing surface, maintaining the integrity of the seal and high service life.
2.Wide angle seat design to avoid pressing and damaging the valve seat and valve tight contact. Provide longer service life.
3.Two - stage high - strength stem structure to ensure easy maintenance, double eccentric structure makes online maintenance valve seat and valve disc becomes easy and fast.
4.Streamlined spherical disc with high flow coefficient.
5.Flexible retaining ring provides a complementary seating pressure on the disc, not only has the advantages of simple structure and light weight, the driving torque is small, simple, rapid, good flow regulating function and close sealing characteristics.


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Main overall connection dimensions

DN

Main overall dimensions

Flange size and bolt hole size

L

H

H1

A

B

1.0MPa

1.6MPa

D

D1

D2

n-d

D

D1

D2

n-d

50

108

82.5

306

80

80

165

125

99

4-18

165

125

99

4-18

65

112

92.5

321

80

80

185

145

118

4-18

185

145

118

4-18

80

114

100

346

80

80

200

160

132

8-18

200

160

132

8-18

100

127

110

387

95

95

220

180

156

8-18

220

180

156

8-18

125

140

125

411

95

95

250

210

184

8-18

250

210

184

8-18

150

140

142.5

447

95

95

285

240

211

8-22

285

240

211

8-22

200

152

170

607

190

308

340

295

266

8-22

340

295

266

12-22

250

165

192.5

688

190

308

395

350

319

12-22

405

355

319

12-26

300

178

222.5

742

190

308

445

400

370

12-22

460

410

370

12-26

350

190

252.5

797

190

308

505

460

429

16-22

520

470

429

16-26

400

216

282.5

930

270

466

565

515

480

16-26

580

525

480

16-30

450

222

307.5

975

270

466

615

565

530

20-26

640

585

548

20-30

500

229

335

1065

270

466

670

620

582

20-26

715

650

609

20-33

600

267

390

1225

457

625

780

725

682

20-30

840

770

720

20-36

700

292

447.5

1343

457

625

895

840

794

24-30

910

840

794

24-36

800

318

507.5

1436

457

625

1015

950

901

24-33

1025

950

901

24-39

900

330

557.5

1616

598

853

1115

1050

1001

28-33

1125

1050

1001

28-39

1000

410

615

1711

598

853

1230

1160

1112

28-36

1255

1170

1112

28-42

1200

470

727.5

1971

598

853

1455

1380

1328

32-39

1485

1390

1328

32-48

1400

530

837.5

2218

860

1345

1675

1590

1530

36-42

1685

1590

1530

36-48

1600

600

957.5

2578

860

1345

1915

1820

1750

40-48

1930

1820

1750

40-56

1800

670

1057.5

2689

860

1345

2115

2020

1950

44-48

2130

2020

1950

44-56

2000

760

1162.5

3022

952

1592

2325

2230

2150

48-48

2345

2230

2150

48-62


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