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Hansen Foot Valve

Used at the end of suction lines for pumps

Used on the end of a suction line to stop the fluids in the line emptying when the pump is turned off. This eliminates the need to prime your pump each time you start it.


BSP thread





1 1/4"


1 1/2"




2 1/2"


 *Approx BSP Equivalent

Which size valve
Click here to help you choose

  • Unrestricted flow
  • Efficiency in excess of 95%. Many other types 35% - 60%.
  • Valve opening and closing very responsive.
  • Unique Product Design incorporates built in strainer.
  • Operates via pressure differential.
  • Operates at any angle or position.
  • No poppet valve to wear.
  • Easily serviced - if required.
  • Blockage reduced due to low fluid velocity through slots.
  • Strong Non-Corrosive Materials - Body; High Quality Glass Fibre Reinforced Nylon, Diaphragm; Nitrile Rubber, Spring; Stainless Steel. All components of this valve manufactured from materials approved for use with potable (drinkable) water.
  • Maximum Recommended Working Pressure - 16 Bar (1600 kPa. 235 PSI) @ 20°C.
  • When screwing metal products into valve, do not over tighten. All pipe work must be adequately supported.

Valve Operation

Cross section shows valve in fully open position

Cross section shows valve in fully closed position

When fluid is required in the direction of flow, the diaphragm opens allowing full flow. As the flow through the valve stops, the diaphragm closes preventing any return flow. The greater the back or head pressure, the better the diaphragm seals against the valve seat.

From $35

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Choosing the correct foot valve

Choosing the correct foot valve


Use the following flow chart and technical specifications to determine the correct Foot Valve for your requirements.

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 dirty water applications choose the largest valve that will be operating in the area shown by the thicker line. 

Example: If your pumping capacity is 400 l/min use a FV32 Foot Valve

Maximum Head Pressure: @ 20°C

VALVE FV25 FV32 FV40 FV50 FV63
psi 235 235 235 235 235
Bar 16 16 16 16 16
kPa 1600 1600 1600 1600 1600


Vacuum required for initial flow:

VALVE FV25 FV32 FV40 FV50 FV63




-0.5 -0.5







Vacuum required to fully open diaphragm:

VALVE FV25 FV32 FV40 FV50 FV63
psi -1.5 -1.5 -1.5 -1.5 -1.5
kPa -10.0 -10.0 -10.0 -10.0 -10.0


Minimum flow for self cleaning action:

VALVE FV25 FV32 FV40 FV50 FV63


110 210 300 460 600


Connection: female BSPT

VALVE FV25 FV32 FV40 FV50 FV63
Thread Size 1" 1 1/4" 1 1/2" 2" 2 1/2"


Dimensions: (mm)

VALVE FV25 FV32 FV40 FV50 FV63
Diameter 69 87 99 123 152
Length 72 88 99 120 157


Installation: Valve will operate at any angle.
Head Loss: See chart above. 
Maximum operating temperature: 60°C ( Degrees Celsius).
Note: All references to gallons are in imperial gallons.

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