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GAONENG VALVE GROUP CO.,LTD GAONENG VALVE GROUP CO.,LTD
Services We Offer:Ball Valve,Butterfly Valve,Check Valve,Y-Strainer,Dismantling Joint,Forged Valve,Gate Valve,Globe Valve,Knife Gate Valve
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Butterfly valve

Butterfly valve
Wafer type NBR/EPDM rubber lined butterfly valve. Used for sea water or corrosive medium, cast iron, ductile iron, WCB,stainless steel material, with lever/worm gear/pneumatic/electric actuator.
1) Features
8.Light and minitype, easily dismantling and repair and can be installed in any position.
9.Simple structure?90° return to open or close the valve.
10.Small operating torque, long life even millions on-off also can work normally.11.
11.Direct proportion fluid characteristic, adjust performance is very good.
12.Good sealing performance, seal test can reach zero leakage.
13.Change the material can suitable for many kinds medium.
14.Double offset?never limited by the medium flow direction.
2) Main performance specification

Nominal size

DN(mm)

Nominal Pressure

PN(MPa)

Test pressure

MPa

Work temperature ()

Suitable medium

shell

seal

50~1200

0.6

0.9

0.66

-29~80

Clean water,sewage,brine,steam,coal gas,foodstuff,
medicine,oil etc.

1.0

1.5

1.1

-29~80

1.6

2.4

1.76

-29~80

2) Main performance specification

Material list

Part name

body

disc

seat

stem

material

Cast iron

Ductile iron

Stainless steel

Carbon steel

Cast iron,

Ductile iron,

Stainless steel,

Carbon steel,

Al-bronze etc.

crude rubber

NBR (Nitrile Buna)

EPDM

Durable rubber

Sanitary rubber

PTFE

Stainless steel

Carbon steel

Nominal size

?DN?

Main dimension

Flange dimension

0.6MPa

1.0MPa

1.6MPa

L

H1

H2

D1

4-φ-M

D1

4-φ-M

D1

4-φ-M

50

43

80

160

110

4-14

120

4-23

120

4-23

65

46

88

175

130

4-14

136

4-26.5

136

4-26.5

80

46

96

180

150

4-18

160

4-18

160

4-18

100

52

115

200

170

4-18

185

4-24.5

185

4-24.5

125

56

128

213

200

4-18

215

4-23

210

4-23

150

56

140

225

225

4-18

238

4-25

238

4-25

200

60

175

260

280

4-18

295

4-25

295

4-25

250

68

202

290

335

4-18

350

4-29

355

4-29

300

78

242

330

395

4-18

400

4-29

410

4-29

350

78

266

360

445

4-23

460

4-30

470

4-30

400

102

298

390

495

4-23

515

4-26

525

4-26

450

114

315

410

550

4-23

565

4-26

585

4-26

500

127

348

430

600

4-23

620

4-M26

650

4-M26

600

154

400

490

705

4-25

725

4-M30

770

4-M30

700

165

520

550

810

4-25

840

4-M30

840

4-M30

800

190

591

610

920

4-30

950

4-M34

950

4-M34

900

203

660

680

1020

4-M27

1050

4-M30

1050

4-M30

1000

216

670

730

1120

4-M30

1160

4-M30

1170

4-M30

1200

254

780

835

1340

4-M45

1380

4-M45

1390

4-M45

1400

279

890

954

1560

4-M45

1590

4-M45

1590

4-M45

1600

318

1020

1090

1760

4-M52

1820

4-M52

1820

4-M52


Butterfly valve Ball valve Globe valve Check valve
Gate valve Y-strainer Dismantling joint Forged valve
Knife gate valve
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