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  Location — Ball valve — Manual Eccentric Hemispherical Valve
Name:

Manual Eccentric Hemispherical Valve

Category:

Ball valve

Remark:

Manual eccentric hemispherical valve using eccentric valve body, eccentric ball and valve seat, valve stem for rotary movement in the common trajectory automatic centering, the process of closing the more off the more tight, fully achieve the purpose of a good seal. Valve ball and seat completely separated, eliminating the wear ring, to overcome the traditional ball valve seat and the ball sealing surface is always worn problem, non-metallic elastic material is embedded in the metal seat, the valve seat metal surface is well protected. This product is especially suitable for steel, aluminum, fiber, tiny solid particles, pulp, coal ash, LPG and other media.

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Product Usage

Manual eccentric hemispherical valve using eccentric valve body, eccentric ball and valve seat, valve stem for rotary movement in the common trajectory automatic centering, the process of closing the more off the more tight, fully achieve the purpose of a good seal. Valve ball and seat completely separated, eliminating the wear ring, to overcome the traditional ball valve seat and the ball sealing surface is always worn problem, non-metallic elastic material is embedded in the metal seat, the valve seat metal surface is well protected. This product is especially suitable for steel, aluminum, fiber, tiny solid particles, pulp, coal ash, LPG and other media.

  

Features

1. Its structure adopts the principle of eccentric tightness to achieve the purpose of tightening, adjusting and closing through the transmission mechanism. The sealing pair is a hard-surface contact seal of a metal surface ring belt. When the double eccentric structure is opened, the valve core is located in a Tibetan ballroom, , And the valve is not washed, the valve core is not washed off when closed, open when the valve core gradual progress along the valve seat, the effective removal of scaling obstacles to achieve a reliable seal. It is particularly effective for mixed flow delivery of two-phase flow-prone fouling solids

2. The valve hemisphere with bimetallic, base metal surfacing on different alloys, the valve seat is also the corresponding surfacing by special treatment, the sealing surface into anti-corrosion, wear-resistant, high strength and other types to meet the needs of different occasions

3. Sealed tightly, delivering zero harmful gas leakage

4. The seal of the spool left compensation, when the valve to do wear, turn off a little while, can be reliably sealed, extending the service life. In addition, the user will squeeze the nut twist off, adjust or replace the valve seat is still available, to avoid the failure of the valve seal, the entire scrap defects.

 

Performance Parameters

Material properties

Material code

WCB

304

316

304L

316L

321

ZG230

0Cr18Ni9(CF8)

1Cr18Ni12Mo2Ti

00Cr18Ni10

00Cr17Ni14Mo2

ZG7Cr18Ni9T

(CF8M)

(CF3)

(CF3M)

(F347)

Suitable media

  Water, oil, steam

 Nitric acids

  Acetic acid

Strong oxidizing medium

  Urea and other corrosive media

  Nitric acids

Test range Mpa

Project

 Nominal pressure

 Shell pressure test

  Sealed test

 On the seal test

 Low pressure seal test

 Flaw test

Test medium

Water Mpa

Water Mpa

Water Mpa

  Gas Mpa

GB/T6440-1992

Time

(S)

120

60

60

0.5~0.6

  Pressure test

1.0Mpa

1.5

1.1

1.1

1.6Mpa

2.4

1.76

1.76

2.5Mpa

3.75

2.75

2.75

 

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

 

Structure picture


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.