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Name:

Electrical Flat Gate Valve

Category:

Gate valve

Remark:

The flat gate valve produced by Lianggong Valve Group Co., Ltd. is a sliding valve whose closing part is a parallel gate. The closing member can be a single gate or a double gate with a distraction mechanism in between. The pressing force of the gate to the valve seat is controlled by the medium pressure acting on the floating gate or the floating valve seat. If it is a double gate plate gate valve, the expansion mechanism between the two gates can supplement this pressing force.

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Product Usage

The flat gate valve produced by Lianggong Valve Group Co., Ltd. is a sliding valve whose closing part is a parallel gate. The closing member can be a single gate or a double gate with a distraction mechanism in between. The pressing force of the gate to the valve seat is controlled by the medium pressure acting on the floating gate or the floating valve seat. If it is a double gate plate gate valve, the expansion mechanism between the two gates can supplement this pressing force.


Product Categories

The flat gate valve can be divided into manual flat gate valve, pneumatic flat gate valve and electric flat gate valve according to the driving mode. According to the use and occasion, it can be divided into diversion hold flat gate valve, non-diversion hole flat gate valve, oil field flat gate valve, pipeline flat gate valve, gas flat gate valve, etc.

Structural Features
This series of products adopt the new floating seal structure, which is suitable for the opening, closing and adjusting devices of control media such as oil and natural gas with pressure less than 15.0MPa and temperature from -29 ℃ to 121 ℃. The product has a novel structural design and material selection. Appropriate, rigorous test, light operation, strong anti-corrosion, abrasion resistance and erosion resistance. It is an ideal new equipment in the petroleum industry.
1. Adopting floating valve seat, two-way opening and closing, reliable sealing and flexible opening and closing.
2. The gate is provided with guide strips for precise guidance, and the sealing surface is spray welded with carbide, which is resistant to erosion.
3. The valve body has a high load-bearing capacity and the channel is straight-through. When fully opened, it is similar to the gate diversion hole and the straight pipe, and the flow resistance is very small. The valve stem adopts composite filler, multiple seals, making the seal reliable and low friction.
4. When closing the valve, turn the handwheel clockwise to move the shutter down to the bottom. Due to the pressure of the medium, the inlet seal seat is pushed towards the direction of the shutter to form a larger seal specific pressure, thus forming the first seal. At the same time, the shutter is pressed against the sealing seat at the outlest end to become a double seal.
5. Due to the double seal, the consumable parts can be replaced without affecting the work of the pipeline. This is an important feature that our products take priority over similar products at home and abroad.
6. When the gate is open, turn the hand wheel counterclockwise, the gate moved up, and the diversion hole and channel hole intersect. With the rise of the gate, the through hole gradually increases, and when the limit position is reached, the diversion hole and the passage hole coincide, and they are fully opened at this time.



Design Standards
Design and manufacture of standards: JB / T 5298
Structure length standard: JB / T 5298
Connection flange standard: GB / T 9113
Pressure temperature grade: GB / T 12224-2005
Test test standards: GB / T 13927-2008, JB / T 5298

Performance parameters

Part Name

Parts and materials

JB/T77298

API 6D

Valve / bonnet

WCB

WCB

A352-LCB

A351-CF8N

gate

2Cr13+ENP

20CrMoV+STL

ANSI 410+ENP

ANSI 316+ENP

Valve stem

2Cr13

2Cr13

A182-F6a

A182-F316S

Seat

25+PTFE

20CrMoV+STL

A105+PTFE

A182-F316+PTFE

filler

NBR/FPM

Flexible graphite

Teflon

Gasket

18-8 / Flexible Graphite

bolt

35

35CrMo

A193-B7M

A193-B8

proper temperature

-29~250℃

-29~550℃

-46~250℃

-40~200℃

Suitable media

Water, oil

Steam, oil

Propane, ethylene

Nitric acids

The main shape and connection dimensions

Nominal diameter

The main dimensions and connection dimensions

L

D

D1

D2

Z-Φd

H

D0

Z43PF-16C

100

150

215

180

155

8-Φ18

700

300

125

150

245

210

185

8-Φ18

798

350

150

150

280

240

210

8-Φ23

895

350

200

180

335

295

265

12-Φ23

1130

350

250

180

405

355

320

12-Φ25

1290

400

300

200

460

410

375

12-Φ25

1480

450

350

200

520

470

435

16-Φ25

1660

450

400

218

580

525

485

16-Φ30

1850

500

450

218

640

585

545

20-30

2080

500

500

229

705

650

608

20-34

2300

600

600

248

840

770

718

20-41

2680

800

700

286

910

840

788

24-41

3080

800

800

286

1020

950

898

24-41

3491

1000

Z43PF-25

100

150

230

190

160

8-Φ23

700

300

125

150

270

220

188

8-Φ25

798

350

150

150

300

250

218

8-Φ25

895

350

200

180

360

310

278

12-Φ25

1130

350

250

180

425

370

332

12-Φ30

1290

400

300

200

485

430

390

16-Φ30

1480

450

350

200

550

490

448

16-Φ34

1660

450

400

218

610

550

505

16-Φ34

1850

500

450

218

660

600

555

20-Φ34

2080

500

500

229

730

660

610

20-Φ41

2300

600

600

248

840

770

718

20-Φ41

2680

800

700

286

955

875

815

24-Φ48

3080

800

800

286

1070

990

930

24-Φ48

3491

1000

Structure picture


All text, data and pictures in this article are for reference only. If you need to see more product performance, structure size, price and other details, please contact us.

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.