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check valve H41F/B-25/40

Features

The lift check valve utilizes the pressure difference of the medium and the weight of the valve disc to automatically close and open.
Control the one-way flow of media, prevent media backflow, and protect system equipment.
Good sealing performance and low

Technical Parameters


Technical Parameter


nominal pressure MPa 2.5 4.0
Shell experimental pressure MPa 3.75 6.0
Seal test pressure MPa 2.75 4.4
Temperature -40℃~+150℃
Applicable Medium Ammonia, liquid ammonia, vinyl chloride, refrigerants, etc
Flange standard GB/T9113-2000
Inspection standards JB/T9092-1999

Main component materials

valve body Valve flap bonnet Sealing surface
WCB\LCB 20Cr13 WCB Babbitt alloy、PTFE

Horizontal (vertical) check valve H41/2F/B nominal pressure PN2.5MPa、4.0MPaExternal dimensions and connection dimensions

DN L horizontal type D D1 D2 D3 bulge D4 concave b f Z-Φd H1 horizontal type H2 vertical
25 160 115 85 65 57 58 16 4 4-Φ14 83 100
32 180 140 100 76 65 66 18 4 4-Φ18 88 120
40 200 150 110 84 75 76 18 4 4-Φ18 94 130
50 230 165 125 99 87 88 20 4 4-Φ18 114 140
65 290 185 145 118 109 110 22 4 8-Φ18 118 150
80 310 200 160 132 120 121 24 4 8-Φ18 137 185
100 350 235 190 156 149 150 24 4.5 8-Φ22 164 210
125 400 270 220 184 175 176 26 4.5 8-Φ26 195 245
150 480 300 250 211 203 204 28 4.5 8-Φ26 235 300
200 600 360 310 274 259 260 30 4.5 12-Φ26 279 300
200 600 375 320 284 259 260 34 4.5 12-Φ30 279 300