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Use the following flow chart and technical specifications to determine the correct Check Valve for your requirements. The valve in most cases can also be sized based on pipe diameter.
Maximum Recommended Working Pressure: @ 68°F
VALVE CV025 CV032 CV040 CV050
psi 145 145 145 145
Bar 10 10 10 10
kPa 1000 1000 1000 1000
Pressure required for initial flow:
VALVE CV025 CV032 CV040 CV050
psi 0.5 0.5 0.5 0.5
kPa 3.5 3.5 3.5 3.5
Flow required to fully open diaphragm:
VALVE CV025 CV032 CV040 CV050
l/min 110 142 158 225
Connection: female BSPT
VALVE CV025 CV032 CV040 CV050
Thread Size 1" 1 1/4" 1 1/2" 2"
Dimensions: (inches)
VALVE CV025 CV032 CV040 CV050
Width 2 23/32" 3 13/32" 3 7/8" 4 3/4"
length 4" 4 13/16" 5 1/4" 6 1/2"
Height 2 23/32" 3 11/16" 4 3/16" 5 3/16"
Installation: Valve will operate at any angle.
Head Loss: See chart above. 		Maximum operating temperature: 140°F (Degrees Farenheit)
Note: All references to gallons are in imperial gallons.
HANFLO™ have tested all its products for use with cold water up to a maximum temperature of 60°C (140°F). We do not recommend the use of these products with temperatures higher than 60°C (140°F) as plastic expands due to temperature increases. HANFLO™ can not guarantee the products will perform when used with temperatures over 60°C (140°F). HANFLO™ products that have failed in temperatures higher then 60°C (140°F) will not be covered by warranty.
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For more information or technical advice email our Tech Info department

The information given on this sheet is for guidance only. HANFLO™ accepts no responsibility for the misuse or misapplication of this information
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