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Rotary ball valve

Product Overview

The main function of Rotary ball valve is that it can not only seal well under forward pressure, but also seal well when reverse pressure or reverse pressure is greater than positive pressure. When the positive pressure is applied, the medium pressure pushes the valve plate forward, and the sealing surface of the valve plate is close to the sealing surface of the valve seat to transmit pressure, and push the valve seat to the valve body step to make it well sealed. When the reverse pressure acts, the medium pressure pushes the valve plate to move backward, and the medium pressure pushes the valve seat to move backward at the same time. The sealing surface of the valve seat is close to the sealing surface of the valve plate to transmit pressure to make it well sealed.

Structural characteristics

1. The inclined elliptical butterfly plate radial dynamic balance sealing system is adopted, the force on both sides of the valve inlet and outlet is approximately balanced, the opening torque of the valve is small, the positive and reverse sealing performance is reliable, and the bidirectional pressure bearing capacity is 100%;
2. The sealing surface of the valve is made of integral metal sealing ring, which is machined with high precision. The sealing cross-section is elliptical, which forms a sealing pair with the metal sealing surface of the valve seat. When the valve is opened and closed, the sealing surface of butterfly plate contacts or disengages instantaneously along the 360 ° circle, which can quickly and accurately realize the opening or closing action;
3. Three eccentric structure is adopted, that is, an angle eccentricity is added on the basis of double eccentric butterfly valve.

Execution standard

Design specification: GB/T 12238, JB/T8527
Flange connection: GB/T 9113, JB/T79, HG20592
Structure length: GB/T12221
Tests and inspection: GB/T13927

Performance parameter

Product specification: DN50~2230mm
Pressure class: PN1.0~ 2.5mpa
Applicable medium: air, water, steam, gas, oil, acid, alkali, salt with weakly corrosive medium, etc
Applicable temperature: Carbon steel: -29℃~425℃ Stainless steel: -40℃~600℃
Driving mode: worm drive, pneumatic drive, electric drive, hydraulic drive
Main material: cast steel, stainless steel, chromium-molybdenum steel, alloy steel, duplex steel

Product Dimensions

PN1.0MPa
DN L D D1 D2 H1 N-φd E H
Manual Pneumatic Electric Manual Pneumatic Electric
50 108 165 125 99 112 4-18 200 245 255 350 625 530
65 112 185 145 118 115 4-18 200 245 255 370 625 530
80 114 200 160 132 120 8-18 200 245 255 380 645 565
100 127 220 180 156 138 8-18 200 355 255 420 675 600
125 140 250 210 184 164 8-18 200 355 255 460 715 640
150 140 285 240 211 175 8-22 280 355 315 555 800 705
200 152 340 295 266 200 8-22 425 250 315 760 850 775
250 165 395 350 319 230 12-22 425 250 315 830 925 945
300 178 445 400 370 260 12-22 560 450 315 895 1035 1070
350 190 505 460 429 300 16-22 560 450 315 950 1070 1140
400 216 565 515 480 340 16-26 580 450 315 1190 1190 1210
450 222 615 565 530 350 20-26 580 650 714 1255 1250 1335
500 229 670 620 582 380 20-26 580 650 714 1305 1290 1415
600 267 780 725 682 450 20-30 660 850 810 1340 1455 1605
700 292 895 840 794 480 24-30 550 850 810 1520 1585 1844
800 318 1015 950 901 530 24-33 550 1250 810 1710 1700 2040
900 330 1115 1050 1001 580 28-33 550 1250 863 1810 1965 2255
1000 410 1230 1160 1112 650 28-36 750 1250 863 1960 2015 2380
1200 470 1455 1380 1328 760 32-39 925 1250 863 2250 2250 2640
1400 530 1675 1590 1530 850 36-42 925 1250 1055 2434 2250 2866
1600 600 1915 1820 1750 1030 40-48 925 1250 1055 2780 2750 3156
1800 670 2115 2020 1950 1230 44-48 980 1250 1183 3020 2950 3421
2000 760 2325 2230 2150 1350 48-48 980 1500 1286 3270 3350 3685

PN1.6MPa
DN L D D1 D2 H1 n-φd E H
Manual Pneumatic Electric Manual Pneumatic Electric
50 108 165 125 99 112 4-18 200 245 255 350 625 530
65 112 185 145 118 115 4-18 200 245 255 370 625 530
80 114 200 160 132 120 8-18 200 245 255 380 645 565
100 127 220 180 156 138 8-18 200 355 255 420 675 600
125 140 250 210 184 164 8-18 200 355 255 460 715 640
150 140 285 240 211 175 8-22 280 355 315 555 800 705
200 152 340 295 266 200 12-22 425 250 315 760 850 775
250 165 405 355 319 230 12-26 425 250 315 830 925 945
300 178 460 410 370 260 12-26 560 450 315 895 1035 1070
350 190 520 470 429 300 16-26 560 450 315 950 1070 1140
400 216 580 525 480 340 16-30 580 450 315 1190 1190 1210
450 222 640 585 548 350 20-30 580 650 714 1255 1250 1335
500 229 715 650 609 380 20-33 580 650 714 1305 1290 1415
600 267 840 770 720 450 20-36 660 850 810 1340 1455 1605
700 292 910 840 794 480 24-36 550 850 810 1520 1585 1844
800 318 1025 950 901 530 24-39 550 1250 810 1710 1700 2040
900 330 1125 1050 1001 580 28-39 550 1250 863 1810 1965 2255
1000 410 1255 1170 1112 650 28-42 750 1250 863 1960 2015 2380
1200 470 1485 1390 1328 760 32-48 925 1250 863 2250 2250 2640
1400 53 1685 1590 1530 850 36-48 925 1250 1055 2434 2250 2866
1600 600 1930 1820 1750 1030 40-55 925 1250 1055 2780 2750 3156
1800 670 2130 2020 1950 1230 44-55 980 1250 1183 3020 2950 3421
2000 760 2345 2230 2150 1350 48-60 980 1500 1286 3270 3350 3685

PN2.5MPa

DN

L

D

D1

D2

H1

N-φD

E

H

Manual

Pneumatic

Electric

Manual

Pneumatic

Electric

50

108

165

125

99

112

4-18

200

245

255

350

625

530

65

112

185

145

118

115

8-18

200

245

255

370

625

530

80

114

200

160

132

120

8-18

200

245

255

380

645

565

100

127

235

190

156

138

8-22

200

355

255

420

675

600

125

140

270

220

184

164

8-26

200

355

255

460

715

640

150

140

300

250

211

175

8-26

280

355

315

555

800

705

200

152

360

310

274

200

12-26

425

250

315

760

850

775

250

165

425

370

330

230

12-26

425

250

315

830

925

945

300

178

485

430

389

260

16-30

560

450

315

895

1035

1070

350

190

555

490

448

300

16-33

560

450

315

950

1070

1140

400

216

620

550

503

340

16-36

580

450

315

1190

1190

1210

450

222

670

600

548

350

20-36

580

650

714

1255

1250

1335

500

229

730

660

609

380

20-36

580

650

714

1305

1290

1415

600

267

845

770

720

450

20-39

660

850

810

1340

1455

1605

700

292

960

875

820

480

24-42

550

850

810

1520

1585

1844

800

318

1085

990

928

530

24-48

550

1250

810

1710

1700

2040

900

330

1185

1090

1028

580

28-48

550

1250

863

1810

1965

2255

1000

410

1320

1210

1140

650

28-55

750

1250

863

1960

2015

2380

1200

470

1530

1420

1350

760

32-55

925

1250

863

2250

2250

2640

1400

530

1755

1640

1560

850

36-60

925

1250

1055

2434

2550

2866

1600

600

1975

1860

1780

1030

40-60

925

1250

1055

2780

2750

3156

1800

670

2195

2070

1985

1230

44-68

980

1250

1183

3020

2950

3421

2000

760

2425

2300

2210

1350

48-68

980

1500

1286

3270

3350

3685

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