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H71 Wafer Check Valve

29 Oct 2019 16:59:00 source：aen-valve.com browse：4110
  • Details
  • Technical Parameters

The H41 flange-connected lift check valve for domestic use has the advantages of bulky volume, large fluid resistance, high water hammer pressure when the valve is closed, difficult installation and maintenance, and short service life. The valve supply network has developed and produced a series of clip-type check valves for the problems of the traditional flange structure check valve. The H71 clip-on lift check valve has a short structural length, small size, light weight and fast closing of the valve flap. The water hammer pressure is small, the installation is convenient, the fluid resistance is small, the action is sensitive, the sealing performance is good, the valve stroke is short, the valve impact force is small, the overall structure is simple and compact, the service life is long, and the reliability is high.

Inside Nominal
Diameter 		Fluid
resistance
coefficient
when the
valve totally
open 		Water flow coefficient when the valve
totally open under normal pressure 		Fluid flow direction
DN NPS Kv(m3=／h) CV(U.S) CV(U.K) ↑ ↓ →
Pressure Approximation of Opening
(Kpa)
15 1/2 6.4 2.6 3.0 2.5 3 2 2.5
20 3/4 5.1 6.4 7.5 6.3 3 2 2.5
25 4 4.1 12.6 14.8 12.3 3 2 2.5
32 11/4 4.1 19.7 23.1 19.3 3 2 2.5
40 11/2 3.8 29.5 63.9 28.9 3 2 2.5
50 2 3.5 54.6 99.9 63.5 3 2 2.5
65 21/2 3.5 85.4 150 83.7 3 2 2.5
80 3 3.2 128 286 125 3 2 2.5
100 4 2.8 244 286 249 3 2 2.5
125 5 2.9 375 439 368 3 1 2.2
150 6 3.1 522 611 512 3 1 2.2
200 8 3.2 915 1070 897 3 1 2.2
Main Size and Weight
Nominal Pressure
PN MPa 		Inside
Nominal Diameter
DN mm
 Size(mm) Weight
(Kg) 		Piping Flange (for reference)
L D D2 D3 D4 D5 Diameter of center circle of bolt hole Bolt quantity Bolt Diameter Bolt Length
PN1.0MPa
PN1.6MPa 		15 16 52 15 24 31 40 0.12 65 4 M12 75
20 19 62 19 30 40 50 0.24 75 4 M12 90
25 22 70 24 36 47 58 0.34 85 4 M12 90
32 28 83 31 46 56 68 0.53 100 4 M16 100
40 31.5 93 39 55 66 78 0.80 110 4 M16 105
50 40 108 48 65 78 90 1.2 125 4 M16 125
65 46 128 62 80 95 110 1.8 145 4 M16 130
80 50 142 76 96 110 125 2.2 160 8 M16 135
100 65 162 95 115 135 150 3.4 180 8 M16 150
125 90 192 110 125 132 - 9.0 210 8 M16 180
150 106 218 127 150 158 - 14 240 8 M20 210
PN1.0MPa 200 140 273 165 200 208 - 24 295 8 M20 240
PN1.6MPa 200 140 273 165 200 208 - 24 295 12 M20 240
PN2.5MPa 15 16 52 15 24 31 40 0.12 65 4 M12 80
20 19 62 19 30 40 50 0.24 75 4 M12 90
25 22 72 24 36 47 58 0.34 85 4 M12 90
32 28 83 31 46 56 68 0.53 100 4 M16 110
40 31.5 93 39 55 66 78 0.80 110 4 M16 115
50 40 108 48 65 78 90 1.2 125 4 M16 125
65 46 128 62 80 95 110 1.8 145 4 M16 135
80 50 142 76 96 110 128 2.2 160 8 M16 145
100 60 168 95 115 135 150 3.8 190 8 M20 160
125 90 194 110 125 132 - 9.2 220 8 M24 205
150 106 224 127 150 158 - 15 250 8 M24 225
200 140 284 165 200 208 - 26 310 12 M24 260
PN4.0MPa 15 16 52 15 24 31 40 0.12 65 4 M12 80
20 19 62 19 30 40 50 0.24 75 4 M12 90
25 22 72 24 36 47 58 0.34 85 4 M12 90
32 28 83 31 46 56 68 0.53 100 4 M16 110
40 31.5 93 39 55 66 78 0.80 110 4 M16 115
50 40 108 48 65 78 90 1.2 125 4 M16 125
65 46 128 62 80 95 110 1.8 145 8 M16 135
80 50 142 76 96 110 128 2.2 160 8 M16 145
100 60 168 95 115 135 150 3.8 190 8 M20 160
125 90 194 110 125 132 - 9.2 220 8 M24 205
150 106 224 127 150 158 - 15 250 8 M24 225
200 140 291 165 200 208 - 28 320 12 M27
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