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Non-Return Valves Female X Female

Spring loaded universal non-return valve with Female x Female threaded connections. 

These non return valves have a resilient disc facing and spring assistance, for rapid closure. This enables the valve to be installed in horizontal or vertical pipework with the flow in the upwards direction. Ideal for potable water applications and for use in heating systems. 

The valve can also be close coupled with our screw in foot filters to make a foot valve and strainer for use in tanks and reservoirs. 

►Maximum working pressure:
3/4" - 1": 16 bar
1-1/4" - 2": 10 bar
2-1/2" - 4": 8 bar
►Maximum liquid temperature: 110°C

►Valve body: Brass
►Valve stem: Nylon
►Valve seat: NBR
►Spring: Stainless steel

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Delivery Costs

Delivery Map


Zone 1 England, Wales & Southern Scotland Under £100 Over £100
Standard 2/3 working days


Express Next working day


Premium Next working day (before 13.00)


Zone 2 Scottish Highlands & Islands, Northern Ireland, Isle of Man, Scilly & Channel Isles Under £100 Over £100
Standard 2/3 working days


Zone 3 Republic of Ireland Under £100 Over £100
Standard 3/5 working days




Orders must be placed before 14.00 for next day and premium next day delivery. 


Exporting Internationally

We offer a first class worldwide export service. Please contact us here for a price.
Model SKU Price ex-VAT Qty
3/4" Non Return Valve 1779-021 £5.84
1" Non Return Valve 1779-022 £7.73
1-1/4" Non Return Valve 1779-023 £12.06
1-1/2" Non Return Valve 1779-024 £15.18
2" Non Return Valve 1779-025 £24.42
3" Non Return Valve 1779-027 £66.84
4" Non Return Valve 1779-028 £114.35
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Whisper Pumps Ltd, Leen Court, Boughton, Newark, Nottinghamshire, NG22 9ZD