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Fakai Valve Factory Site: Yongxing Industrial Zone, Longwan District, Wenzhou City
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H72H / W Wafer Lift Check Valve

H72H / W Wafer Lift Check Valve Structure
H72H / W Wafer Lift Check Valve Structure

Scope of application

H72H / W Wafer Lifting Check Valve consists of valve body, disc, spring, etc. It can be installed horizontally or vertically in a variety of piping systems to prevent the medium from flowing backward. It has a short structure, small size, light weight, and valve disc. Fast closing, small water hammer pressure, smooth flow channel, small fluid resistance, sensitive action, good sealing performance, etc.

Structural features

The wafer lift check valve has a small water hammer pressure, a short valve disc stroke, a lightweight valve disc, a spring-assisted closing, and a fast valve closing speed. The structure length is very short, the volume is small, and the weight is very light, which brings great convenience to the valve installation, handling, storage and piping arrangement, and can save a lot of materials and reduce the cost.

Performance parameter

model Nominal pressure
PN (MPa)
Test pressure PS (MPa) Operating temperature
(℃)
Applicable medium
case seal
H72W-16T 1.6 2.4 1.76 ≤200 Water, steam, oil, etc.
H72H-25Q 2.5 3.75 2.75 ≤235
H72W-25H ≤300
H72W-25P ≤200 Corrosive media such as nitric acid
H72W-40H 4 6 4.4 ≤300 Water, steam, oil, etc.
H72W-40P ≤200 Corrosive media such as nitric acid

Part material

Specifications Valve body Disc spring
H72H-16Q QT400-15 25 50CrCA
H72W-25H 2Cr13 1Cr13 1Cr18Ni9Ti
H72W-16P ZG1Cr18Ni9Ti 1Cr18Ni9Ti 1Cr18Ni9Ti

Hydromechanical properties (fluid resistance coefficient, flow coefficient and opening pressure)

Nominal diameter Coefficient of fluid resistance when valve is fully open Water E coefficient when the valve is fully open at room temperature Fluid flow
DN NPS Kvm3 = / h CVU.S CVU.K
Approximate opening pressure 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 4.1 19.7 23.1 19.3 3 2 2.5
40 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 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

Dimension table

Nominal diameter DN 15 20 25 32 40 50 65 80 100 125 150 200
Structure length Long series 25 31.5 35.5 40 45 56 63 71 80 110 125 160
Short series 16 19 twenty two 28 31.5 40 46 50 60 90 105 140