Gas valve

1, uses and performance specifications

Lift check valves are suitable for medium and small caliber pipes of various pressure, temperature and medium under the control of media connect or disconnect the line opening and closing devices; rely on gravity and the fluid pressure valve flap in the pipeline to achieve the automatic stop fluid back.

Mpa, PN strength test pressure low pressure air seal test pressure Mpa seal test (Mpa) for medium
2.5 3.75 2.75 (-40 ~ +80)

1, H41N main dimensions and connection dimensions:
DN LD D1 D2 D6 bf zd H
25 1,601,158,565,581,624 -* 14150
3,219,013,510,075,661,824 -* 18160
4,020,014,511,085,761,834 -* 18175
5,023,016,012,510,088,203 4 -* 18185
65 2,901,801,451,201,102,238 -* 18 200
80 3,101,951,601,351,212,238 -* 18220
100 3,501,351,901,601,502,438 -* 23248
125 4,002,702,201,881,762,838 -* 25380
150 4,803,002,502,182,043,038 -* 25420
200 600 375 31027826034312 -* 25530
250 650 445 38534531342312 -* 34610
300 750 510 45040836446416 -* 34725

3, H42N main dimensions and connection dimensions:
DN LD D1 D2 bf zd
50 1,401,601,251,002,034 -* 18
65 1,601,801,451,202,238 -* 18
80 1,851,951,601,352,238 -* 18
1,002,101,351,901,602,438 -* 23
1,252,502,702,201,882,838 -* 25
1,503,003,002,502,183,038 -* 25
200 380 37531027834312 -* 25
Operating principle and structure description
1, when the flow direction of the arrow through the valve when the fluid pressure due to valve flap rise to flow smoothly through the valve
2, when the fluid back, due to valve weight valve and fluid pressure differential, the valve flap down and seal with the sealing surface. To prevent backflow of fluid
3, the valve is fully closed structure, no dynamic seal, and never leaked.

4, the main part materials:

Part Name Material
WCB carbon steel body valve cover
Flap valve sealing surface of nylon 25 # 1010
The flange bolts 35CrMoA
# 35 in the flange