Most water authorities require a check valve to be installed at the tap before a tap timer. Attach this back-flow device to your tap to prevent back-flow. These check valves are suitable for use on drip systems because they also have a Vacuum Breaker Valve to ease the pressure on the drip tube system.
The 20mm check valve is designed to be used with a 15mm garden tap
The 25mm check valve is designed to be used with a 20mm garden tap.
The 20mm check valve is designed to be used with a 15mm garden tap and the 25mm check valve with a 20mm garden tap.
If you are unsure of the size of the valve you need, please see this link: How to measure BSP threads and PVC Pipe
Brass Vacuum Breaking Check Valve 20mm | Brass Vacuum Breaking Check Valve 25mm | |
---|---|---|
Type | Check Valve | |
Material | Brass | |
Colour | Brass | |
Inlet Thread Size | 20mm BSPF | |
Outlet Thread Size | 20mm BSPM | |
Max. Inlet Pressure (kPa) | 1400 |
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Sunshower gave excellent design advice on what is required to connect my valves to the water supply.
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