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Pigging valve

Products > Ball valve > Pigging valve

Pigging valve

Model: KTNQPB347F
Nominal diameter: DN50 ~ 400mm
Nominal pressure: PN2.5 ~ 10.0MPa The
main material: WCB, A216, ZG1Cr18Ni9Ti, CF8
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Product working principle and purpose:

The pigging valve is a new type of valve that is mainly used for cleaning pipes in long-distance pipelines such as water, petroleum, natural gas and the like for transmitting and receiving pigs. With the corresponding pig can easily complete the pipe cleaning, emptying and in-sequence delivery of media, testing pipeline systems and other work. Can completely replace the traditional use of the pig to send and receive tube as the core complex pig launching and receiving devices. The structural features of the pigging valve is a new type of valve that is innovatively designed after retrofitting and adding functions based on the principle of a fixed ball valve. Fully inherited the performance characteristics of two truncated ball valves, valve opening and closing through the 90 ° rotation of the core, easy to design double block and bleed to make the valve fully open or fully closed Can discharge the body cavity of the media, this function is necessary for the pig valve.

The side of the valve body is provided with a branch pipe whose center is perpendicular to the center of the pipeline. The quick-opening blind plate and the venting valve are arranged on the branch pipe so that the pig can be conveniently inserted into or removed from the pigging valve. The larger one of the through holes is provided with a blocking bar which can hinder the passage of the pig and allow the medium to flow through.

       100% pressure test to ensure no visible leakage at any sealing site; Fire-resistant safety design with metal-to-metal seal between ball valve seat and valve seat when the flexible seat is burned; Both valve body and bonnet and stem part Set high temperature graphite gaskets, to ensure high temperature sealing reliability, fire test in line with API 6FA and API 607 standards; anti-static design, guided electrostatic springs to ensure good communication between the ball, stem and valve body, safely export friction Static electricity.

 

Product Structure Features:

 1, top-mounted valve body design to achieve on-line valve maintenance 
 2, the stem from the ball thrust, stem torsion freely, flexible valve operation 
 3, quick open blind easy to operate 
 4, zero leakage 
 5, interlocking design to ensure that the operator Safety 
 6, fire safety design, fire test in line with AP, 6FA and AP, 607 standards 
 7, anti-static design 
 8, cleaning design
 

The main parts of the product material:

Body, bonnet

GB

WCB

ZG1Cr18Ni9Ti

ASTM

A216, WCB

CF8

Sphere

GB

2Cr13

1Cr18Ni9Ti / Surface special treatment

ASTM

420

304 + HF

Seat

GB

1Cr18Ni9Ti + PTFE

1Cr18Ni9Ti + PTFE

ASTM

304 + PTFE

304 + PTFE

Upper and lower shaft

GB

2Cr13

1Cr18Ni9Ti

ASTM

420

304

filler

GB

PTFE

PTFE

ASTM

PTFE

PTFE

bolt

GB

35

0Cr18Ni9

ASTM

A193 B7

A320-B8

Nut

GB

45

0Cr18Ni9

ASTM

A194

A194-8

 

Product main dimensions:

Nominal pressure PN

Nominal diameter DN

Size (mm)

L

D

D1

D2

D3

B

F

F1

ZD

2.5MPa

50

330

160

125

100

-

20

3

-

4-18

80

432

195

160

135

-

22

3

-

8-18

100

750

230

190

160

-

24

3

-

8-23

150

850

300

250

218

-

30

3

-

8-25

200

914

360

310

278

-

34

3

-

12-25

250

1092

425

370

332

-

36

3

-

12-30

300

1200

485

430

390

-

40

4

-

16-30

350

1700

550

490

448

-

44

4

-

16-34

400

2000

610

550

505

-

48

4

-

16-34

4.0MPa

50

330

160

125

100

88

20

3

4

4-18

80

432

195

160

135

121

22

3

4

8-18

100

750

230

190

160

150

24

3

4.5

8-23

150

850

300

250

218

204

30

3

4.5

8-25

200

914

375

320

282

260

38

3

4.5

12-30

250

1092

445

385

345

313

42

3

4.5

12-34

300

1200

510

450

408

364

46

4

4.5

16-34

350

1700

570

510

465

422

52

4

5

16-34

400

2000

655

585

535

474

58

4

5

16-41

6.4MPa

50

330

175

135

105

88

26

3

4

4-23

80

432

210

170

140

121

30

3

4.5

8-23

100

750

250

200

168

150

32

3

4.5

8-25

150

850

340

280

240

204

38

3

4.5

8-34

200

914

405

345

300

260

44

3

4.5

12-34

250

1092

470

400

352

313

48

3

4.5

12-41

300

1200

530

460

412

364

54

4

4.5

16-41

350

1700

595

525

475

422

60

4

5

16-41

400

2000

670

585

525

474

66

4

5

16-48

10.0MPa

50

330

195

145

112

88

28

3

4

4-25

80

432

230

180

148

121

34

3

4.5

8-25

100

750

265

210

172

150

38

3

4.5

8-30

150

850

350

290

250

204

46

3

4.5

12-34

200

914

430

360

312

260

54

3

4.5

12-41

250

1092

500

430

382

313

60

3

4.5

12-41

300

1200

585

500

442

364

70

4

4.5

16-48

350

1700

655

560

498

422

76

4

5

16-54

400

2000

715

620

558

474

80

4

5

16-54

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