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Gas gate valve

Product Overview

Gas gate valve, suitable for medium: blast furnace gas, coke oven gas, producer gas, water gas, oil gas and other sewage gas, and liquefied gas, natural gas, mine gas and other clean gas. It is mainly used in coal to gas, metallurgy, coking and other industries and city gas pipeline network.

Structural characteristics

The valve body is of cast structure. The valve seat adopts O-ring seal and floating seat structure with preload to make the inlet and outlet of the valve seal in both directions; and the opening and closing torque of this structure is only 1 / 2 of the ordinary valve, which can easily open and close the valve. The valve seat is inlaid with PTFE on the sealing surface, which has the double sealing of PTFE to metal and metal to metal, and the PTFE sealing surface can remove the sludge of the gate at the same time. The valve gate, whether fully opened or fully closed, is always consistent with the sealing surface, which is protected from direct erosion by medium, thus prolonging its service life. When the valve is fully open, the channel is smooth and straight, the flow resistance coefficient is very small, and there is no pressure loss. The pipeline can be cleaned by using the hairball. When the valve is closed, it can automatically remove the high pressure in the inner chamber (see the original working drawing for details) to ensure the safety of use. Using closed gear to turn the opening and closing indicating mechanism can clearly reflect the opening and closing situation of the valve for a long time. The outer surface of directly buried valve is treated with epoxy coal tar pitch, which can have the same service life as the pipeline.

Execution standard

Structure length: GB/T 15188.2-94
Flange connection size: GB/T 9113-2000
Inspection and testing: GB/T 13927-92

Performance parameter

Nominal diameter: DN300 ~ 1600mm
Pressure range: PN1 ~ 2MPa
Working temperature: Rubber ≤100℃ Teflon seal ≤100℃ Hard seal ≤100℃
Main material: gray cast iron
Suitable medium: gas

Product Dimensions

DN/mm

L

D

D1

D2

b

Z-Φd

≈H

L1

D0

300

330

435

395

362

24

12-23

1236

325

250

350

330

485

445

412

26

12-23

-

325

250

400

330

535

495

462

28

16-23

1493

325

250

450

330

590

550

518

28

16-23

1975

394

320

500

350

640

600

568

30

16-23

2063

394

320

600

390

780

725

685

36

20-30

2513

389

451

700

430

895

840

800

40

24-30

2878

389

451

800

470

1010

950

905

44

24-34

3528

439

520

900

510

1110

1050

1005

46

28-34

3688

439

520

1000

550

1220

1160

1115

50

28-34

3938

439

520

1200

700

1450

1380

1325

56

32-41

4872

586

804

1400

900

1675

1590

1525

62

36-48

5540

586

804

1600

1000

1915

1820

1750

68

40-54

6300

586

804

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