Products > Pneumatic Butterfly Valve > Pneumatic Flange Eccentric Soft Sealing Butterfly Valve

Pneumatic Flange Eccentric Soft Sealing Butterfly Valve

Product Model: D643H/F
Nominal Diameter: DN50-DN2000
Nominal Pressure: 0.6~1.6MPa
Body Material: WCB, QT450-10, HT200, HT250
Applicable Temperature: NBR: -40℃~90℃ Fluoro Rubber: -20℃~200℃
Applicable Medium: Water, Air, Natural Gas, Oil and Weak Corrosive Fluid
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Flange type pneumatic soft sealing butterfly valve by eccentric rotary pneumatic piston actuator and valve body composition, the design principle of three-dimensional space trajectory eccentric, the sealing surface of the sealing surface to achieve the ideal, no friction, no interference between each other, and the sealing material selection properly, so that the valve sealing, corrosion resistance resistance, high temperature resistance and wear resistance has been a reliable guarantee.

First, Pneumatic Flange Soft Sealing Eccentric Butterfly Valve Product Characteristics

1, The operating torque, operation torque is a minimum of all valves, open and close rapidly, powered by compressed air through the piston rack, mechanical drive rod gear, a rotary output torque to rotate the valve plate of 0~90 degrees, will be able to complete the opening and closing fast, simple structure, small volume, light weight, small flow resistance, flow coefficient, good sealing performance. Large range of adjustment. It is the execution unit of the instrument in the automatic control system.

2, The electric - gas valve positioner, the electrical signal and compressed air as power control system, accept input 0-10mADC or 4-20mADC current signal by the regulator will be converted into the compressed air, the air pressure signal input and output, changing the angle of rotation of the valve plate (0-90 degrees, with arbitrary angle) control flow parameters such as well the.

3, Using electromagnetic reversing valve, valve position return device, with AC220V or DC24V power supply voltage and compressed air as power, to achieve rapid two bit cut-off control of fluid medium.

4, The actuator adopts piston type cylinder and crank arm transfer structure, the output torque is large, the volume is small, the use of full sealed waterproof design, high protection level. Cylinder body adopts mirror cylinder, no oil lubrication, small friction coefficient, corrosion resistance, super durability and reliability. All drive bearings adopt boundary self lubrication bearings without oil lubrication to ensure that the drive shaft does not lose friction.

Two, Main Technical Parameters

Nominal Diameter DN(mm)

50~2000

50~1600

Nominal Pressure PN(MPa)

0.6

1.0

1.6

Sealing Test (MPa)

0.66

1.1

1.76

Strength Test (MPa)

0.9

1.5

2.4

Applicable Temperature

Nitrile Butadiene Rubber:-40℃~90℃      Fluoro rubber:-20℃~200℃

Applicable Medium

Water, Air, Natural Gas, Oil Products and Weakly Corrosive Fluids

Leakage Rate

Conform to GB/T13927-92 Standard

Driving Mode

Worm Gear Drive, Electric, Pneumatic, Hydraulic


Three, Main Parts and Materials

Part NameMaterial Science
Valve Body

WCB、QT450-10、HT200、HT250

Disc

WCB、QT450-10、HT200、HT250

Valve Shaft

2Cr13

Seal Ring

NBR Oil Resistant Rubber

FillerFlexible Graphite


Four, Pneumatic Soft Sealing Butterfly Valve Actuator Parameters

Actuator TypeSingle and Double Acting Pneumatic Actuator
Gas Supply Pressure0.4~0.7MPa
Air ConnectionG1/4"、G1/8"、G3/8"、G1/2"
Ambient Temperature-30~+70℃
Action FormSingle acting actuator: gas shut off (B) - valve opening (FO) when gas is out of breath; gas open (K) - valve position off (FC) when air is out of breath
Double acting actuator: gas shut off (B) - valve position holding (FL) when gas lost; gas open (K) - valve position holding (FL) when lost air
Fitting AccessoriesPositioner, solenoid valve, air filter pressure reducer, retaining valve, stroke switch, valve position conveyor, hand wheel mechanism, etc.

A new series of pneumatic actuators, a double acting and single acting (spring), gear rack drive, safe and reliable; G series of large diameter valves using pneumatic actuator fork transmission, reasonable structure, large output torque, a double acting and single acting.

1, Gear type double piston, the output torque is big, small volume.
2, Cylinder selection of aluminum and gold material, light weight, beautiful appearance.
3, Manual operation mechanism can be installed on top and bottom.
4, Rack type connection can adjust opening angle and rated flow.
5, Actuators optional live signal feedback instructions and various accessories to achieve automatic operation.
6, IS05211 standard connection provides convenience for installation and replacement of products.
7, Adjustable ends of the screw can make the standard product at 0 degrees and 90 degrees with the adjustable range of 4 degrees. Ensure the synchronization accuracy with the valve.

Five, Implementation Standards

Manufacturing Standards

GB/T122387-89

Flange Standard

GB9113-2000、GB17241.6-1998

Structural Length Standard

GB12221-89

Inspection Standard

GB/T13927-92

 

Connecting Dimensions Of Main Shapes

Flange Size and Bolt Hole Size


L

H

H1

A

B

0.6MPa

1.0MPa

1.6MPa


D

D1

D2

n-d

D

D1

D2

n-d

D

D1

D2

n-d


50

108

82.5

306

80

80

140

110

88

4-14

185

125

99

4-18

165

125

99

4-18

65

112

92.5

321

80

80

160

130

108

4-14

185

145

118

4-18

185

145

118

4-18

80

114

100

346

80

80

190

150

124

4-18

200

160

132

8-18

200

160

132

8-18

100

127

110

387

95

95

210

170

144

4-18

220

180

156

8-18

220

180

156

8-18

125

140

125

411

95

95

240

20

174

8-18

250

210

184

8-18

250

210

184

8-18

150

140

142.5

447

95

95

265

225

199

8-18

285

240

211

8-22

285

240

211

8-22

200

152

170

607

190

308

320

280

254

8-18

340

295

266

8-22

340

295

266

12-22

250

165

192.5

688

190

308

375

335

309

12-18

395

350

319

12-22

405

355

319

12-26

300

178

222.5

742

190

308

440

395

363

12-22

445

400

370

12-22

460

410

370

12-26

350

190

252.5

797

190

308

490

445

413

12-22

505

460

429

16-22

520

470

429

16-26

400

216

282.5

930

270

466

540

495

463

16-22

565

515

480

16-26

580

525

480

16-30

450

222

307.5

975

270

466

595

550

518

16-22

615

565

530

20-26

640

585

548

20-30

500

229

335

1065

270

466

645

600

568

20-22

670

620

582

20-26

715

650

609

20-33

600

267

390

1225

457

625

755

705

667

20-26

780

725

682

20-30

840

770

720

20-36

700

292

447.5

1343

457

625

860

810

772

24-26

895

840

794

24-30

910

840

794

24-36

800

318

507.5

1436

457

625

975

920

878

24-30

1015

950

901

24-33

1025

950

901

24-39

900

330

557.5

1616

598

853

1075

1020

978

24-30

1115

1050

1001

28-33

1125

1050

1001

28-39

1000

410

615

1711

598

853

1175

1120

1078

28-30

1230

1160

1112

28-36

1255

1170

1112

28-42

1200

470

727.5

1971

598

853

1405

1340

1295

32-33

1455

1380

1328

32-39

1485

1390

1328

32-48

1400

530

837.5

2218

860

1345

1630

1560

1510

36-36

1675

1590

1530

36-42

1685

1590

1530

36-48

1600

600

957.5

2578

860

1345

1830

1760

1710

40-36

1915

1820

1750

40-48

1930

1820

1750

40-56

1800

670

1057.5

2689

860

1345

2045

1970

1918

44-39

2115

2020

1950

44-48

2130

2020

1950

44-56

2000

760

1162.5

3022

952

1592

2265

2180

2125

48-42

2325

2230

2150

48-48

2345

2230

2150

48-62