Safety Back-Flow Valve

Safety back-flow valve applications

The valve is to be used in liquid reflux pipelines in the liquefied petroleum gas pump outlet with operation temperature of -40~+80℃. It is used for the safe reflux of over-pressure medium. When the pump front pressure exceeds regulated value, the valve will open automatically and reflux to the tank so as to ensure the safe operation of equipments and pipelines.

Safety back-flow valve brief figure of structure

Safety Back-Flow Valve

Safety back-flow valve dimensions (mm)


Nominal diameter
DN(mm)
Dimension (mm)
D D1 D2 b z-¢d L H
40 150 110 85 16 4-19 200 236
50 165 125 100 16 4-18 230 266
65 185 145 120 20 4-18 290 430
80 200 160 135 20 8-18 310 490
100 215 180 155 22 8-18 350 548
150 280 240 210 24 8-23 480 706
Nominal
Diameter
DN (mm)
AH42F-16C/P Dimensions (mm) Weight
(Kg)
L L1 D D1 D2 b f Z-¢d DN’ D’ D1’ D2’ b’ f’ Z-¢d’ H do
25 100 95 115 85 65 14 2 4-¢14 32 140 100 78 16 3 4-¢18 250 15 12
32 115 100 140 100 78 16 2 4-¢18 40 150 110 85 16 3 4-¢18 280 20 14
40 120 110 150 110 85 16 3 4-¢18 50 165 125 100 16 3 4-¢18 290 25 16
50 135 120 165 125 100 16 3 4-¢18 65 185 145 120 18 3 4--¢18 341 32 21
80 170 135 200 160 135 18 3 8-¢18 100 220 180 155 20 3 8-¢18 470 50 43
100 205 160 220 180 155 20 3 8-¢18 125 250 210 185 22 3 8-¢18 580 65 65
150 250 210 285 240 210 24 3 8-¢22 175 315 270 240 26 3 8-¢23 670 100 110

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