HJ社区海角

Pneumatic flange center line butterfly valve


Product model: D641X

Nominal diameter: DN50 ~ 1200mm

Pressure range: PN0.6 ~ 1.6Mpa

Service temperature: 80 ℃ ~ 120 ℃

Applicable media: clean water, sewage and gas

Valve material: cast steel, stainless steel

Structure length: GB / T12221-1989

Connection standard: GB / T12238-1989

Pressure test: GB / T13927-1992


PRODUCT OVERVIEW

Pneumatic flange center line butterfly valve is mainly composed of medium line soft seal butterfly valve and pneumatic actuator. The butterfly valve flow channels are fully lined with elastic rubber, and the disc plate is made of stainless steel. The contact surface between the disc plate and the seal is finely ground to ensure smoothness. When the butterfly valve is closed or opened, the disc plate is close to the elastic rubber without gap, with reliable sealing. It is especially suitable for pipelines with clear water, sewage, gas, gas and other media. The valve is powered by compressed air and receives (4 ~ 20mA) industrial signals. The valve rod is pushed by the actuator to drive the disc plate to rotate (0-90 °) for any opening adjustment to complete the switching and adjustment of the valve. It is widely used for water supply and drainage in water plants, power plants, steel mills, papermaking, chemical industry, catering and other systems as regulation and cut-off.


STRUCTURAL FEATURES

1. Small and light, easy disassembly and maintenance, and can be installed at any position.

2. The structure is simple and compact, the operating torque is small, and the 90 ° rotary opening is fast.

3. The flow characteristic is linear and has good regulation performance.

4. The connection between the butterfly plate and the valve rod adopts a pin free structure, which overcomes the possible internal leakage point.

5. The outer circle of the butterfly plate adopts spherical shape, which improves the sealing performance and prolongs the service life of the valve. There is still zero leakage after opening and closing under pressure for more than 50000 times.


MATERIAL OF MAIN PARTS

Part nameMain materials
valve bodyNodular cast steel, cast steel, alloy steel, stainless steel
DiscGray cast iron, nodular cast steel, cast steel, stainless steel and special materials
seal ringAll kinds of rubber, PTFE
Valve stem2Cr13、stainless steel
FillerO-ring, flexible graphite


MAIN PERFORMANCE PARAMETERS

Nominal diameterDN(mm)50~1200
Nominal pressurePN(MPa)0.61.01.6
Test pressureStrength test0.91.52.4
Sealing test0.661.11.76
Airtight seal test0.60.60.6
Applicable mediaAir, water, sewage, steam, gas, oil, etc
Driving formPneumatic transmission


MAIN OVERALL CONNECTION DIMENSIONS

Nominal diameter

Length

Overall dimension

(reference value)


Connection size (standard value)

weight
kg

0.6MPa

1.0MPa

1.6MPa

毫米

英寸

L

C

B

A

D

D1

D2

D3

n-d

D1

D2

D3

n-d

D1

D2

D3

n-d

50

2

108

82.5

338

180

65

140

110

88

4-14

165

125

99

4-18

165

125

99

4-18

14

65

2-1/2

112

92.5

358

180

65

160

130

108

4-14

185

145

118

4-18

185

145

118

4-18

16

80

3

114

100

413

245

72

190

150

124

4-18

200

160

132

8-18

200

160

132

8-18

17

100

4

127

110

428

240

72

210

170

144

4-18

220

180

156

8-18

220

180

156

8-18

21

125

5

140

125

444

240

72

240

200

174

8-18

250

210

184

8-18

250

210

184

8-18

27

150

6

140

142.5

553

350

93

265

225

199

8-18

285

240

211

8-22

285

240

211

8-22

29

200

8

152

170

678

350

93

320

280

254

8-18

340

295

266

8-22

340

295

266

12-22

50

250

10

250

197.5

742

550

350

375

335

309

12-18

395

350

319

12-22

405

355

319

12-26

69

300

12

270

222.5

803

600

350

440

395

363

12-22

445

400

370

12-22

460

410

370

12-26

91

350

14

290

252.5

866

600

350

490

445

413

12-22

505

460

429

16-22

520

470

429

16-26

110

400

16

310

282.5

940

600

350

540

495

463

16-22

565

515

480

16-26

580

525

480

16-30

138

450

18

330

307.5

995

750

380

595

550

518

16-22

615

565

530

20-26

640

585

548

20-30

175

500

20

350

335

1058

750

380

645

600

568

20-22

670

620

582

20-26

715

650

609

20-33

210

600

24

390

390

1163

750

380

755

705

667

20-26

780

725

682

20-30

840

770

720

20-36

275

700

28

430

447.5

1283

750

380

860

810

772

24-26

895

840

794

24-30

910

840

794

24-36

530

800

32

470

507.5

1398

750

380

975

920

878

24-30

1015

950

901

24-33

1025

950

901

24-39

590

900

36

510

557.5

1498

1250

380

1075

1020

978

24-30

1115

1050

1001

28-33

1125

1050

1001

28-39

1400

1000

40

550

615

1608

1500

580

1175

1120

1078

28-30

1230

1160

1112

28-36

1255

1170

1112

28-42

1650

1200

48

630

727.5

1876

1500

580

1405

1340

1295

32-33

1455

1380

1328

32-39

1485

1390

1328

32-48

2140

Product recommendations

+86-577-67383555
qrCode
HJ社区海角


HJ社区海角