Large Diameter Pige Valve

Large Diameter Pige Valve

Large Diameter Pige Valve
  • Size Range:
  • Pressure:
  • End Connections:
Product Description

The pigging valve (also known as PIG) pigging valve solves the problem of deposits or fouling on the inner wall of the pipe during long-term use. These deposited dirt deposits on the pipe wall and increases the resistance of the fluid during transport. Laying new pipelines to clean all kinds of residues in the pipeline before operation, and coating the inner wall of the pipeline with rust and anti-corrosion coating to make the pipeline unimpeded. In the running natural gas and heating pipelines, there will be waxing and scaling water inside the pipeline, which will affect the pipeline transportation capacity. Cleaning operations can reduce the corrosion of various materials on the inner wall of the pipe to reduce operational resistance. Chemical materials and oil pipelines, there will be deposition of polymeric materials in the pipeline, and the pigs will be used for non-stop pipeline cleaning operations to avoid re-laying pipelines and reduce production costs.

The function of the quick-release valve for quick-release valve:

The fast-opening door has completely independent intellectual property rights. The quick-opening door has internal pressure protection function. It is impossible to open the quick-opening door before the pressure is released. The large-diameter quick-opening door is equipped with a rocker hinge device to prevent accidental opening. Staggered to reduce the probability of casualties and property damage. It is convenient and quick to operate and has applied for patent ZL2018 2 0226964.1.

Featured and detachable pig guard grille features:

The detachable barrier has complete independent intellectual property rights. This PIG valve is multi-purpose. This PIG is suitable for the middle section of the long-distance pipeline. When the pipeline needs cleaning, the detachable retaining valve can be replaced in the middle section. A heavily worn pipe cleaner to more effectively clean the inner wall of the pipe and the dirt and increase the pipe circulation capacity. Or when the pipe cleaner does not need to be replaced in the middle, the damper inside the detachable fence pigging valve is taken out. Allow the pig to pass through the PIG valve smoothly. It can also reduce the running resistance and pressure loss of the grille inside the pigging valve, greatly improve the economic value, and apply for the patent ZL2019 1 0409834.0.

Characteristics of the remanufacturing and quick-discharging system of the pipe-removing pipe assembly:

The system has completely independent intellectual property rights. When the pipeline cleaning operation is nearing the end, when the pig enters the clearing system of the pipe collection assembly pipe residue, it can effectively store and quickly discharge the pipe. The residue inside reduces the leakage of the pigging valve when the residue in the pipe passes through the pigging valve and the sealing surface of the valve seat and the ball cause the pigging valve to leak. It is necessary to remove the ball to discharge the problem, and to collect the ball to build the ball receiving station, the site is larger, the structure is complicated and the cost is high. And applied for the patent ZL2019 2 0706143.2.

Pipe valve type

Type B: The pigging valve type B is a bypass type pigging valve with a flow area of about 25% of the cross-sectional area of the pipe. This structure does not break even when the pipe is fired or received. flow. Therefore, type B cannot be used as a cut-off valve.

 

     

 

                                          Type B             

Type C: The pigging valve type C is a standard type pigging valve. Its ball passage area is slightly larger than the tube through diameter inner flow surface. The C type PIG valve will cut off the medium in the pipe when receiving or launching. delivery. Therefore, the C type can be used as a DBB ball valve.

                  

Type C

Note:

Each PIG valve can be used as a pigging ball valve or as a pigging ball valve, but the installation direction of the pigging valve must be distinguished during installation. When used as a pigging service valve, the end of the valve seat with the barrier must be installed at the upstream end of the pipe. As a pigging ball valve, the end of the valve seat with the barrier must be installed at the downstream end of the pipe. When the ball is closed, the dirt container can be installed in front of the PIG valve and equipped with a receiver/transmitter. The ball-collecting system is a patented product of the pig-cleaning valve, and will be instructed when the pig is finished.

     

SIZE

CLASS 150

CLASS 300

CLASS 600

CLASS 900

NPS

L

H

H1

H2

L

H

H1

H3

L

H

H1

H2

L

H

H1

H2

2

310

145

194

180

310

145

194

180

325

145

194

180

348

145

194

180

3

362

162

213

190

362

162

213

190

375

162

213

190

387

162

162

302

4

445

186

255

212

445

186

255

212

460

186

255

212

483

186

186

320

6

520

241

308

277

520

241

308

277

562

241

308

277

590

568

568

583

8

724

590

831

785

724

594

831

785

818

594

831

785

889

626

847

788

10

898

663

879

813

898

663

879

813

943

663

879

813

980

663

906

847

12

1035

745

990

886

1035

745

990

886

1068

745

990

886

1194

914

990

886

16

1372

1233

1060

973

1372

1232

1060

973

1372

1232

985

973

 

 

 

 

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