Foot Valve
Foot valve for keeping water in the pump suction pipe and stopping it draining when the pump stops; ductile iron body, flanged or threaded, 2 to 12 inch.
- Keeps water in the pump suction pipe
- Inlet strainer keeps out stones and leaves
- Ductile iron body
- Flanged or threaded connection
- 2 to 12 inch
Key Specifications
- Product code
- P113
- Material & grade
- Ductile iron
- Nominal size
- 2 to 12 inch
- Unit of sale
- Piece
- Applications
- Wells & pumping, Irrigation & agriculture
- Dimensional options
- 9 rows in the specification table
What a foot valve does
A foot valve is fitted at the end of the pump suction pipe, under the water of a well or pond. When the pump runs, the valve opens and water enters the pipe; when the pump stops, the valve closes and the water stays in the suction pipe. So the pump starts next time without priming again.
A foot valve also has a strainer at the inlet that keeps stones, leaves and coarse particles out of the pipe and pump. It is essential for surface pumps and pumps drawing from ponds, rivers or shallow wells.
Sizes and connection
Our rows cover foot valves in 2, 2-1/2, 3, 4, 5, 6, 8, 10 and 12 inch. The foot valve size must match the pump suction pipe; a smaller size makes suction harder.
Our catalogue names flanged and threaded connections. If the suction pipe is polyethylene, a flanged foot valve connects through a stub end and backing ring, and a threaded one through a compression male or female adaptor. In your enquiry give the size, connection type and quantity.
Foot valve installation tips
Fit the foot valve at least a few tens of centimetres above the bottom of the well or pond so mud is not drawn in, and deep enough below the water surface that the inlet does not come out of the water as the level drops. The suction pipe must be airtight, because the smallest air leak disrupts the pump.
Inspect and clean the foot valve strainer regularly; a clogged strainer reduces suction and strains the pump.
Foot Valve — Technical Specifications
Wall thickness and weight are calculated from the standard series and are approximate; final values are confirmed in the quotation.
| Nominal Size (inch) |
|---|
| 2 |
| 2-1/2 |
| 3 |
| 4 |
| 5 |
| 6 |
| 8 |
| 10 |
| 12 |
Foot Valve — FAQ
Which pumps need a foot valve?
Surface pumps that draw water from ponds, rivers or shallow wells.
Which sizes are supplied?
2 to 12 inch, flanged or threaded.
Why does a pump lose prime without one?
Because the suction pipe drains back when the pump stops.
How does it connect to PE pipe?
With a stub end and backing ring for flanged, or a threaded compression adaptor for threaded.
