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Special Ball Valve for Liquefied Gas
Name:

Special Ball Valve for Liquefied Gas

Category：

Ball valve

Remark:

1, Double blocking and discharging function: The fixed ball valve adopts the spring to preload the floating valve seat. When the valve is fully open or fully closed, the valve seat on the upstream and downstream sides block the fluid and the reed of the valve body cavity is drained through the discharge valve .

2, automatic pressure relief function: the valve body cavity to stay the medium temperature rise caused abnormal boost, without going through the safety valve, and the valve seat function can automatically pressure relief, which to ensure the safety of the valve in the delivery of liquid medium Sex is very important.

3, fire safety structure: the valve has a fire safety function, its design, manufacturing are to follow the API 607 and API 6FA specifications.

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product description

1, Double blocking and discharging function: The fixed ball valve adopts the spring to preload the floating valve seat. When the valve is fully open or fully closed, the valve seat on the upstream and downstream sides block the fluid and the reed of the valve body cavity is drained through the discharge valve .

2, automatic pressure relief function: the valve body cavity to stay the medium temperature rise caused abnormal boost, without going through the safety valve, and the valve seat function can automatically pressure relief, which to ensure the safety of the valve in the delivery of liquid medium Sex is very important.

3, fire safety structure: the valve has a fire safety function, its design, manufacturing are to follow the API 607 and API 6FA specifications.

  

Product Range

Fixed ball valve for Class150 ~ Class1500, PN16 ~ PN100, JIS 10K ~ JIS 20K of the various pipe, temperature: -196 ~ 350 ℃, used to cut off or connect the media in the pipeline, the choice of different materials, can be They are widely used in petroleum refining, long-distance pipeline, chemical industry, papermaking, pharmacy, water conservancy, electric power, municipal administration, steel and other fields for transporting water, steam, oil products, nitric acid, acetic acid, oxidizing media and urea. Fixed ball valve drive for worm gear drive, manual, pneumatic or electric. Fixed ball valves generally use flange connection, but also can be welded connection.

  

Liquefaction principle

      The closing piece of liquefied gas ball valve is a sphere, the sphere rotates around the valve body center line to reach the valve which is opened and closed. Ball valve is mainly used in the pipeline to cut off, distribute and change the flow direction of the medium.

      Floating ball valve with a special design double bevel elastic ring, effectively reducing the friction between the ball and the seal, reducing the operating torque. When the medium pressure is small, the contact area of the seal ring and the sphere is small, so a larger seal pressure ratio ensures a reliable seal. When the media pressure is large, the contact area of the seal ring and the ductile iron also increases accordingly. Therefore, the ring can withstand greater thrust without damage, to ensure reliable sealing.

 

Characteristics of natural gas


 

 


design feature

1, the operation is labor-saving: the ball is supported by the upper and lower bearings to reduce the friction and eliminate the excessive sealing torque caused by the pressure of the inlet and the seal seat.

2, the sealing performance is reliable: PTFE single-material sealing ring embedded in the stainless steel valve seat, the metal valve seat with a spring to ensure that the end of the seal enough pre-tightening force, the valve sealing surface wear during use, under the spring Valves continue to ensure good sealing performance.

3, the fire structure: In order to prevent the emergence of sudden heat or fire, teflon seal ring burned, a larger leak, and to promote the fire, the ball and valve seat set between the fire seal ring, the seal burned, In the spring force, the valve seat ring quickly push the ball, the formation of metal and metal seals, play a certain degree of sealing effect. Fire test in line with APl6FA and APl607 standards.

4, automatic pressure relief function: When the valve medium chamber stagnant abnormal increase in pressure exceeds the pre-spring force, the seat back from the ball, to achieve the effect of automatic relief pressure relief valve seat automatically complex

5, the drain pipe: the body is set up excretion holes up and down, can check the valve seat for leaks, at work, the valve is fully open or fully closed, the removal of the cavity pressure can be directly replaced filler; can discharge cavity Retention, reduce the media on the valve pollution.

 

Performance parameters

Working pressure（MPa）

1.6~25.0

Applicable temperature（℃）

≤180

Suitable media

  Natural gas, liquefied petroleum gas

Material

  Body, bonnet

  Carbon steel cast steel

Ball, stem

  / Chrome nickel molybdenum stainless steel

Sealing ring

Teflon

Filler

Teflon


 Main connection size

PN

DN

L

D

K

d

Y

b

Z-d0

Ws

Hs

Hw

Hd

1.6MPa

40

165

145

110

85

-

16

4-18

230

135

-

-

50

203

160

125

100

-

16

4-18

260

150

-

-

65

222

180

145

120

-

18

4-18

350

180

-

-

80

241

195

160

135

-

20

8-18

500

195

-

-

100

305

215

180

155

-

20

8-18

650

245

310

420

125

356

245

210

185

-

22

8-18

800

270

330

440

150

394

280

240

210

-

24

8-23

1000

295

390

470

200

457

335

295

265

-

26

12-23

-

-

440

510

250

533

405

355

320

-

30

12-25

-

-

490

560

300

610

460

410

375

-

30

12-25

-

-

530

600

350

686

520

470

435

-

34

16-25

-

-

620

670

400

762

580

525

485

-

36

16-30

-

-

675

720

450

864

640

585

545

-

40

20-30

-

-

740

790

500

914

705

650

608

-

44

20-34

-

-

825

870

600

1067

840

770

718

-

48

20-41

-

-

920

960

2.5MPa

40

190

145

110

85

-

18

4-18

230

135

-

-

50

216

160

125

100

-

20

4-18

260

150

-

-

65

241

180

145

120

-

22

8-18

350

180

-

-

80

283

195

160

135

-

22

8-18

500

195

-

-

100

305

230

190

160

-

24

8-23

650

245

310

420

125

381

270

220

188

-

28

8-25

800

270

330

440

150

403

300

250

218

-

30

8-25

1000

295

390

470

200

502

360

310

278

-

34

12-25

-

-

440

510

250

568

425

370

332

-

36

12-30

-

-

490

560

300

648

485

430

390

-

40

16-30

-

-

530

600

350

762

550

490

448

-

44

16-34

-

-

620

670

400

838

610

550

505

-

48

16-34

-

-

675

720

450

914

660

600

555

-

50

20-34

-

-

740

790

500

991

730

660

610

-

52

20-41

-

-

825

870

600

1143

840

770

718

-

56

20-41

-

-

920

960

4.0MPa

40

190

145

110

85

76

18

4-18

230

135

-

-

50

216

160

125

100

88

20

4-18

260

150

-

-

65

241

180

145

120

110

22

8-18

350

180

-

-

80

283

195

160

135

121

22

8-18

500

195

-

-

100

305

230

190

160

150

24

8-23

800

250

320

430

125

381

270

220

188

176

28

8-25

1000

280

340

450

150

403

300

250

218

204

30

8-25

1200

300

405

480

200

502

375

320

282

260

38

12-30

-

-

450

530

250

568

445

385

345

313

42

12-34

-

-

505

590

300

648

510

450

408

364

46

16-34

-

-

545

620

350

762

570

510

465

422

52

16-34

-

-

640

690

400

838

655

585

535

474

58

16-41

-

-

690

740

450

914

680

610

560

524

60

20-41

-

-

760

810

500

991

755

670

612

576

62

20-48

-

-

850

900

6.4MPa

40

241

165

125

95

76

24

4-23

260

140

-

-

50

292

175

135

105

88

26

4-23

260

160

-

-

65

330

200

160

130

110

28

8-23

350

180

-

-

80

356

210

170

140

121

30

8-23

500

220

-

-

100

406

250

200

168

150

32

8-25

800

250

320

430

125

450

295

240

202

176

36

8-30

1000

295

340

450

150

495

340

280

240

204

38

8-34

1200

340

405

480

200

597

405

345

300

260

44

12-34

-

-

450

530

250

673

470

400

352

313

48

12-41

-

-

505

590

300

762

530

460

412

364

54

16-41

-

-

545

620

350

826

595

525

475

422

60

16-41

-

-

640

690

400

902

670

585

525

474

66

16-48

-

-

690

740

500

1054

800

705

640

576

70

20-54

-

-

760

810

10.0MPa

40

241

165

125

95

76

26

4-23

260

160

-

-

50

292

195

145

112

88

28

4-25

350

180

-

-

65

330

220

170

138

110

32

8-25

500

200

-

-

80

356

230

180

148

121

34

8-25

800

240

310

410

100

432

265

210

172

150

38

8-30

1000

270

340

450

125

508

310

250

210

176

42

8-34

1200

320

360

505

150

559

350

290

250

204

46

12-34

-

-

425

555

200

660

430

360

312

260

54

12-41

-

-

470

625

250

787

500

430

382

313

60

12-41

-

-

525

645

300

838

585

500

442

364

70

16-48

-

-

565

715

350

889

665

560

498

422

76

16-54

-

-

670

770

400

991

715

620

558

474

80

16-54

-

-

720

840

 

Inquiry

If you have any enquiry about quotation or cooperation,please feel free to email us at info@cnlgvalve.com or use the following enquiry form. Our sales representative will contact you within 24 hours. Thank you for your interest in our products.