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YD343HA Gas butterfly valve

Product Overview

YD343HAGas butterfly valve has the characteristics of simple structure, small volume, light weight, low material consumption, small installation size, quick switch, 90 ° reciprocating rotation, small driving torque, etc. it is used to cut off, connect and adjust the medium in the pipeline, and has good fluid control characteristics and sealing performance. It can transport mud and store the least liquid at the pipe mouth. Under low pressure, it can achieve good sealing and good regulation performance. The streamline design of the butterfly plate of the explosion-proof electric butterfly valve greatly reduces the fluid resistance, which can be described as an energy-saving product. The valve rod of the electric butterfly valve is of through-bar structure. After quenching and tempering, it has good mechanical properties, corrosion resistance and scratch resistance. When the explosion-proof electric gas butterfly valve is opened and closed, the valve rod only rotates and does not move up and down. The packing of the valve rod is not easy to be damaged and the sealing is reliable. The butterfly plate taper pin is fixed, and the extended end is designed to prevent the valve rod from collapsing when the connection between the valve rod and the butterfly plate breaks accidentally.

Structural characteristics

1, because the sealing pair and packing of the butterfly valve are mostly made of polytetrafluoroethylene, counterpoint polystyrene, nylon, rubber and other high polymer, it is easy to generate static electricity in the process of frequent opening and closing, used in part of the flammable and explosive medium occasions will hit sparks, causing hidden dangers.
Special gas valve with anti - static structure is required.
The butterfly valve manufactured by our factory is equipped with missile spring between butterfly plate, valve stem and valve body, which will pass the static electricity into the pipeline in time and lead it into the ground to ensure the safety of the system.
2, butterfly valve is an indispensable key component in pipeline transportation, in order to prevent the fire, due to the damage of the sealing surface caused by the loss of a large number of media, butterfly valve is designed to be fire-resistant structure, that is, after the soft material melted to form a metal hard seal, during the fire to prevent the outflow of some media cause greater losses.According to the needs of users, butterfly valve seat and stem of the sealing part, can be equipped with grease valve, when the sealing part due to wear or other reasons leakage, through the grease valve injection sealing grease, temporary sealing role, in order to take effective rescue measures in time.
3, butterfly valve can be designed as an extension of the operating mechanism according to the needs, suitable for the pipeline buried auxiliary installation site.Butterfly valves are designed for low temperature conditions with a long neck to keep packing away from the medium and avoid packing failure.There are essential differences between this structure and the lengthening of the operating mechanism.
4, high temperature resistance, wear resistance, long service life.Butterfly valve is the biggest difference: the use of three eccentric design structure.The butterfly plate installation center and rotation center are designed with rigorous eccentricity: when the valve opens 10° or even fully open, the butterfly valve seat sealing surface and butterfly plate are in a non-contact state, butterfly plate with the stem rotation and deflect into the valve seat sealing surface to make it sealed.Therefore, due to the opening and closing process of less, no wear and tear to extend the service life of the valve.
5, when the butterfly valve pipeline fluid pressure into the seat sealing slot, due to Posson's force acting principle, the sealing element in the pipeline pressure and O-ring expansion force generated by the resultant force, seat sealing surface squeezed to butterfly plate and valve sealing.This unique sealing structure can produce more sealing force with the increase of pipeline pressure.
6. The seat of this butterfly valve can be fine-tuned.In the valve after a certain number of years, when the sealing ring wear leakage, in the case of not opening the valve, by adjusting screw to the direction of the sealing ring butterfly plate fine adjustment to the required size, can be compensated and have the same sealing performance of the new valve.
7. The multi-layer hard sealed dazzle valve series can be equipped with manual devices, pneumatic devices or electric devices to form manual butterfly valve, pneumatic butterfly valve (with feedback signals and electric-gas valve positor) and electric butterfly valve and other three categories of six series products.
8. Our butterfly valve is not only simple in structure, small in size, light in weight, less in material consumption, small in installation size, small in driving torque, simple and fast in operation, but also can have a good flow control joint function and close sealing characteristics at the same time. It is one of the fastest valve varieties developed in recent decades.Our metal sealed butterfly valves are high temperature, high pressure, high sealing, long life, excellent regulation characteristics and one valve multi-purpose function, its reliability and other performance indicators are up to a higher level.The original butterfly valve is a simple baffle valve with lax closing.It is usually used in water pipeline system as flow control valve and mud resistance valve.The performance of butterfly valves is improved by the use of chemically resistant synthetic rubber.Because the synthetic rubber has corrosion resistance, erosion resistance, size stability, good resilience, easy to shape, low cost and other characteristics, and can be used according to different requirements to choose different properties of synthetic rubber, to meet the working conditions of butterfly valve, so it is widely used in the manufacturing of butterfly valve lining and elastic seat.In order to meet the requirements of high and low temperature, corrosion resistance, long service life and other industrial applications, in the last decade, our metal seal butterfly valve has been developed greatly.With high temperature resistant, good low temperature resistance, strong corrosion resistance, strong erosion resistance, high strength alloy materials in the application of screw valve, make the metal sealing waltz valve in high and low temperature, strong erosion, long life and other industrial fields has been widely used, makes the valve sealing surface in the process of opening and closing without any extrusion, abrasion, wear and tear, so that the service life of the butterfly valve sealing and increase as the number of levels.Butterfly valves in full open, with a small flow resistance, when the opening between about 15° to 70°, and sensitive flow control, so in the field of large diameter regulation, butterfly valve is very common, and will gradually become the dominant valve type.Most butterfly valves can be used in media with suspended solids due to the wipeability of the disc movement, depending on the strength of the seal can also be used in powder and granular media.The rotary center of butterfly plate (that is, the center of valve shaft) and the sealing surface of butterfly plate form A dimension A offset, and A B offset with the center line of valve body;The center line of the body sealing surface is at an Angle to the center line of the seat (i.e. the center line of the body).

Execution standard

Quality assurance: ISO9000
Design: CJ/T167
Structure length: GB/T12221
Flange standard: GB/T17241.6\API 598 GB/T 9113
Test standard: GB/T13927

Performance parameter

Nominal diameter: DN50-DN3500 NPS2 "-160"
Nominal pressure: PN0.6Mpa-PN10mpa Class125-600lb
Applicable temperature: ≤80℃
Applicable medium: gas, natural gas, gas, liquefied gas, etc
Main material: A48, A536, WCB, LCB, CF8, CF8M, CF3, CF3M, etc.
Type of construction: sandwich, welded, flange

Product Dimensions

DN

Length of structure (standard value)

External dimensions (reference value)

Connection size (standard value)

WSD(4)7F -Q WT(Kg)

H

WSD(4)7F -Q

WSD(6)7F -Q

WSD(9)7F -Q

PN0.6MPa

PN1.0MPa

inches

mm

Short

Long

H1

A1

B1

H2

A2

B2

H3

A3

B3

D1

z-d

D1

z-d

40

1 1/2

43

43

107

330

180

200

625

245

72

530

250

255

100

4-14

110

4-18

10

50

2

43

43

112

350

180

200

625

245

72

530

250

255

110

4-14

125

4-18

12

65

2 1/2

46

46

115

370

180

200

625

245

72

530

250

255

130

4-14

145

4-18

13

80

3

49

64

125

380

180

200

645

245

72

565

250

255

150

4-18

160

8-18

15

100

4

56

64

138

420

180

200

675

355

92

600

250

255

170

4-18

180

8-18

17

125

5

64

70

164

460

180

200

715

355

92

640

250

255

200

8-18

210

8-18

27

150

6

70

76

175

555

270

280

800

355

92

704

300

315

225

8-18

240

8-22

29

200

8

71

89

215

780

400

425

850

250

170

775

300

315

280

8-18

295

8-22

45

250

10

76

114

243

840

400

425

925

250

170

945

300

315

335

12-18

350

12-22

69

300

12

83

114

285

995

450

560

1035

450

220

1070

300

315

395

12-22

400

12-22

86

350

14

92

127

320

1050

450

560

1070

450

220

1140

300

315

445

12-22

460

16-22

122

400

16

102

140

350

1220

535

580

1190

450

220

1210

300

315

495

16-22

515

16-26

141

450

18

114

152

350

1280

535

580

1250

650

280

1335

575

714

550

16-22

565

20-26

191

500

20

127

152

380

1365

535

580

1290

650

280

1415

575

714

600

20-22

620

20-26

260

600

24

154

178

435

1460

570

660

1455

850

380

1605

656

810

705

20-26

725

20-30

380

700

28

165

229

480

1520

750

550

1585

850

380

1844

656

810

810

24-26

840

24-30

450

800

32

190

241

530

1710

750

550

1700

1250

380

2040

656

810

920

24-30

950

24-33

650

900

36

203

241

595

1810

750

550

1965

1250

380

2255

785

863

1020

24-30

1050

28-33

830

1000

40

216

300

650

1900

900

750

2015

1250

380

2380

785

863

1120

28-30

1160

28-36

1050

1200

48

254

360

775

1180

1000

925

2250

1250

380

2640

785

863

1340

32-33

1380

32-39

1400

1400

56

279

390

870

1450

1000

925




2886



1560

36-36

1590

36-42

1900

1600

64

318

440

1000

1730

1000

925




3156



1760

40-36

1820

40-48

2900

1800

72

356

490

1110

3020

1100

980




3421



1970

44-39

2020

44-48

4000

2000

80

406

540

1250

3270

1100

980




3685



2180

48-42

2230

48-48

5300



DN

Length of structure (standard value)

External dimensions (reference value) Connection size (standard value)

H

WSD(4)4F -Q

WSD(6)4F -Q

WSD(9)4F -Q

PN0.25MPa

PN0.6MPa

PN1.0MPa

inches

mm

Short

Long

H1

A1

B1

H2

A2

B2

H3

A3

B3

D

D1

z-d D D1

z-d

D

D1

z-d

40

1 1/2

106 140 107 330 180 200 605 245 72 530 250 255 130

100

4-14

130

100

4-14

150

110

4-18

50

2

108

150

112

350

180

200

625

245

72

530

250

255

140

110

4-14

140

110

4-14

165

125

4-18

65

2 1/2

112

170

115

370

180

200

645

245

72

530

250

255

160

130

4-14

160

130

4-14

185

145

4-18

80

3

114

180

120

380

180

200

675

355

92

565

250

255

190

150

4-18

190

150

4-18

200

160

8-18

100

4

127

190

138

420

180

200

715

355

92

600

250

255

210

170

4-18

210

170

4-18

220

180

8-18

125

5

140

200

164

460

180

200

800

355

92

640

250

255

240

200

8-18

240

200

8-18

250

210

8-18

150

6

140

210

175

555

270

280

850

250

170

705

300

315

265

225

8-18

265

225

8-18

285

240

8-22

200

8

152

230

200

760

400

425

925

250

170

775

300

315

320

280

8-18

320

280

8-18

340

295

8-22

250

10

165

250

243

830

400

425

1035

450

220

945

300

315

375

335

12-18

375

335

12-18

395

350

12-22

300

12

178

270

250

895

450

560

1070

450

220

1070

300

315

440

395

12-22

440

395

12-22

445

400

12-22

350

14

190

290

280

950

450

560

1190

450

280

1140

300

315

490

445

12-22

490

445

12-22

505

460

16-22

400

16

216

310

305

1190

535

580

1250

650

280

1210

300

315

540

495

16-22

540

495

16-22

565

515

16-26

450

18

222

330

350

1255

535

580

1295

650

280

1335

575

714

595

550

16-22

595

550

16-22

615

565

20-26

500

20

229

350

380

1305

535

580

1455

850

380

1415

575

714

645

600

20-22

645

600

20-22

670

620

20-26

600

24

267

390

445

1340

570

660

1585

850

380

1605

656

810

755

705

20-26

755

705

20-26

780

725

20-30

700

28

292

430

480

1520

750

550

1700

1250

380

1844

656

810

860

810

24-26

860

810

24-26

895

840

24-30

800

32

318

470

530

1710

750

550

1865

1250

380

2040

656

810

975

920

24-30

975

920

24-30

1015

950

24-33

900

36

330

510

580

1810

750

550

2015

1500

580

2255

785

863

1075

1020

24-30

1075

1020

24-30

1115

1050

28-33

1000

40

410

550

650

1960

900

750

2226

1500

580

2380

785

863

1175

1120

28-30

1175

1120

28-30

1230

1160

28-36

1200

48

470

630

760

2250

1000

925




2640

785

863

1375

1320

32-30

1405

1340

32-33

1455

1380

32-39

1400

56

530

710

850

2435

1000

925




2886



1575

1520

36-30

1630

1560

36-36

1675

1590

36-42

1600

64

600

790

1030

2780

1000

925




3156



1790

1730

40-30

1830

1760

40-36

1915

1820

40-48

1800

72

670

870

1230

3020

1100

980




3421



1990

1930

44-30

2045

1970

44-39

2115

2020

44-48

2000

80

760

950

1350

3270

1100

980




3685



2190

2130

48-30

2265

2180

48-42

2325

2230

48-48



DN

L

External dimensions (reference value)

Flange dnwnsions (standard)

mm

Inches

Short

Long

H

WSD(4)4F -Q

WSD(6)4F -Q

WSD(9)4F -Q

PN1.6MPa

PN2.5MPa

H1

A1

B1

H2

A2

B2

H3

A3

B3

D

D1

Z-d

D

D1

Z-d

50

2

108

150

112

350

180

200

625

245

72

530

250

255

165

125

4-18

165

125

4-18

65

2 1/2

112

170

115

370

180

200

625

245

72

530

250

255

185

145

4-18

185

145

8-18

80

3

114

180

120

380

180

200

645

245

72

565

250

255

200

160

8-18

200

160

8-18

100

4

127

190

138

420

180

200

675

355

92

600

250

255

220

180

8-18

235

190

8-22

125

5

140

200

164

460

180

200

715

355

92

640

250

255

250

210

8-18

270

220

8-26

150

6

140

210

175

555

270

280

800

355

92

705

300

315

285

240

8-22

300

250

8-26

200

8

152

230

200

760

400

425

850

250

170

775

300

315

340

295

12-22

360

310

12-26

250

10

165

250

243

830

400

425

925

250

170

945

300

315

405

355

12-26

425

370

12-30

300

12

178

270

250

895

450

560

1035

450

220

1070

300

315

460

410

12-26

485

430

16-30

350

14

190

290

280

950

450

560

1070

450

220

1140

300

315

520

470

16-26

555

490

16-33

400

16

216

310

305

1190

535

580

1190

450

220

1210

300

315

580

525

16-30

620

550

16-36

450

18

222

330

350

1255

535

580

1250

650

280

1335

575

714

640

585

20-30

670

600

20-36

500

20

229

350

380

1305

535

580

1290

650

280

1415

575

714

715

650

20-33

730

660

20-36

600

24

267

390

445

1340

570

660

1455

850

380

1605

656

810

840

770

20-36

845

770

20-39

700

28

292

430

480

1520

750

550

1585

850

380

1844

656

810

910

840

24-36

960

875

24-42

800

32

318

470

530

1710

750

550

1700

1250

380

2040

656

810

1025

950

24-39

1085

990

24-48

900

36

330

510

580

1810

750

550

1865

1250

380

2255

785

863

1125

1050

28-39

1185

1090

28-48

1000

40

410

550

650

1960

900

750

2015

1250

380

2380

785

863

1255

1170

28-42

1320

1210

28-56

1200

48

470

630

760

2250

1000

925

2250

1250

380

2640

785

863

1485

1390

32-48

1530

1420

32-56

1400

56

530

710

850

2435

1000

925




2886



1685

1590

36-48

1755

1640

36-62

1600

64

600

790

1030

2780

1000

925




3156



1930

1820

40-56

1975

1860

40-62

1800

72

670

870

1230

3020

1100

980




3421



2130

2020

44-56

2195

2070

44-70

2000

80

760

950

1350

3270

1100

980




3685



2345

2230

48-62

2425

2300

48-70



DN Structure length L External dimensions (reference value) Flange dnwnsions (standard)
mm Inches L H WSD(4)4F -Q WSD(6)4F -Q WSD(9)4F -Q PN4.0MPa
Short Long H1 A1 B1 H2 A2 B2 H3 A3 B3 D D1 Z-d
50 2 108 150 112 350 180 200 625 250 170 530 250 255 165 125 4-18
65 2 1/2 112 170 115 370 270 280 625 250 170 530 250 255 185 145 8-18
80 3 114 180 120 380 270 280 645 250 170 565 250 255 200 160 8-18
100 4 127 190 138 420 270 280 675 250 170 600 250 255 235 190 8-22
125 5 140 200 164 460 380 420 715 450 220 640 250 255 270 220 8-26
150 6 140 210 175 555 380 420 800 450 220 704 300 315 300 250 8-26
200 8 152 230 208 780 400 425 850 450 220 775 300 315 375 320 12-30
250 10 165 250 243 830 400 425 925 450 280 945 300 315 450 385 12-33
300 12 178 270 285 895 450 560 1035 650 280 1070 300 315 515 450 16-33
350 14 190 290 320 950 450 560 1070 650 280 1140 300 315 580 510 16-36
400 16 216 310 350 1190 535 580 1190 650 280 1210 300 315 660 585 16-39
450 18 222 330 350 1255 535 580 - - - 1335 575 714 685 610 20-39
500 20 229 350 380 1305 535 580 - - - 1415 575 714 755 670 20-42

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