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Which Foot Valve
Which Check Valve
Chemical Resistance


Use the following flow chart and technical specifications to determine the correct Foot Valve for your requirements. The valve in most cases can also be sized based on pipe diameter.

Foot Valve selection instructions

Step 1: Measure or calculate the capacity of your pump installation.

Step 2: Look at the chart for the valve(s) that cover the flow rate.

Step 3: For applications where the water contains sand or silt, choose the smallest valve that will be operating in the
area shown by the thicker line.

Example: If your pumping capacity is 400 l/min use a FV032 Foot Valve

Maximum Head Pressure:
VALVE FV025 FV032 FV040 FV50
psi 235 235 235 235
Bar 16 16 16 16
kPa 1600 1600 1600 1600
Vacuum required for initial flow:
VALVE FV025 FV032 FV040 FV050
psi -0.5 -0.5 -0.5 -0.5
kPa -3.5 -3.5 -3.5 -3.5
Vacuum required to fully open diaphragm:
VALVE FV025 FV032 FV040 FV050
psi -1.5 -1.5 -1.5 -1.5
kPa -10.0 -10.0 -10.0 -10.0
Minimum flow for self cleaning action:
VALVE FV025 FV032 FV040 FV050
l/min 110 210 300 460
Connection: female BSPT
VALVE FV025 FV032 FV040 FV050
Thread Size 1" 1 1/4" 1 1/2" 2"
Dimensions: (inches)
VALVE FV025 FV032 FV040 FV050
Diameter 2 23/12" 3 13/32" 3 7/8" 4 13/16"
length 2 27/32" 3 15/32" 3 29/32" 4 3/4"
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