Check Valve Series

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Gas Check Valve

manufacturer: Shanghai Fengqi Industry Development Co., Ltd.
Eml: sales@fengqi.sh.cn

Tel: 86 (21) 3652 8716
Mob: (86) 138 1635 6498

product drawing

Gas check valves
Gas check valves

H44N type swing check valve disc achieves rotating moving by the using of flow pressure difference and its own weight, and the flow resistance coefficient is small. It is applied to the vertical pipes of most tank areas, prevents and globe backflow automatically, to ensure the upstream device

Main design parameter

design and manufacture:GB/T12236-89
flange connection:JB/T79-94、GB9113-2000
face to face dimension:GB12221-89
nominal diameter:DN25~DN200mm
nominal pressure:PN2.5、4.0MP

Dimensions & constructral diagram

Gas check valve constructral diagram
Gas check valve constructral diagram

Main performance and parameters

nominal pressure test pressure applicable medium suitable temperature
shell sealing
2.5 3.75 2.75 liquid petroleum gas -40~+80℃
4.0 6.0 4.4

The materials of main parts

part name body,bonnet sealing surface and disc
materials Carbon steel SS and nylon 1010

Main dimensions and weight

nominal diameter DN(mm) H41N-25 type main dimensiosn(mm) weight (kg)
L D D1 D2 b f Z-фd H D3
25 160 115 85 65 16 2 4-14 120 92 10
32 190 135 100 78 18 3 4-18 135 120 12
40 200 145 110 85 18 3 4-18 145 135 15
50 230 160 125 100 20 3 4-18 155 150 20
80 310 195 160 135 22 3 8-18 185 200 36
100 350 230 190 160 24 3 8-23 210 270 55
125 400 270 220 188 28 3 8-25 245 310 70
150 480 300 250 218 30 3 8-25 276 375 105
200 600 360 320 280 32 3 12-25 330 - 170
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