Non Return Valves
Shop non-return valves and inline check valves for compatible air compressors, receivers and compressed-air systems.
Non-Return Valves for Compressed Air Systems
Non-return valves allow compressed air to flow in the intended direction while helping prevent reverse flow when the compressor stops or system pressure changes.
The current range includes receiver/compressor NRVs and inline check valves with several main and auxiliary connection arrangements.
Match the complete valve reference, thread arrangement, pressure requirement and intended application before ordering.
Shop Non Return Valves
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Sale!
Non Return ValvesTanair S-4101335 | Non Return Valve (NRV) 3/4″ M X 3/4″” M X 1/8″” F 16 BAR (NB10/AB100)”
Original price was: £62.28.£52.94Current price is: £52.94. exc vat. Add to basketTanair S-4101335 replacement non-return valve for compatible compressed-air compressor and receiver installations. Main connections: 3/4″ male x 3/4″ male; auxiliary connection: 1/8″ female. Rated to 16 Bar. Designed to permit airflow in the intended direction and help prevent reverse flow when correctly selected and installed.
In StockOriginal price was: £62.28.£52.94Current price is: £52.94. exc vat. -
Sale!
Non Return ValvesTanair S-8222507 | Non Return Valve (NRV) 1″M X 3/4″M X 1/8″ 16 Bar with Cone
Original price was: £94.88.£73.33Current price is: £73.33. exc vat. Add to basketTanair S-8222507 replacement non-return valve for compatible compressed-air compressor and receiver installations. Main connections: 1″ male x 3/4″ male; auxiliary connection: 1/8″ connection. Rated to 16 Bar. Designed to permit airflow in the intended direction and help prevent reverse flow when correctly selected and installed.
In StockOriginal price was: £94.88.£73.33Current price is: £73.33. exc vat. -
Sale!
Non Return ValvesTanair S-9048003 | Non Return Valve (NRV) 3/4″ M x 1/2″ M x 1/8″
Original price was: £18.42.£13.33Current price is: £13.33. exc vat. Add to basketTanair S-9048003 replacement non-return valve for compatible compressed-air compressor and receiver installations. Main connections: 3/4″ male x 1/2″ male; auxiliary connection: 1/8″ connection. Designed to permit airflow in the intended direction and help prevent reverse flow when correctly selected and installed.
In StockOriginal price was: £18.42.£13.33Current price is: £13.33. exc vat. -
Sale!
Non Return ValvesTanair S-9048007 | Non Return Valve (NRV) 1/2″ M x 1/2″ M x 1/8″ F
Original price was: £19.96.£15.00Current price is: £15.00. exc vat. Add to basketTanair S-9048007 replacement non-return valve for compatible compressed-air compressor and receiver installations. Main connections: 1/2″ male x 1/2″ male; auxiliary connection: 1/8″ female. Designed to permit airflow in the intended direction and help prevent reverse flow when correctly selected and installed.
In StockOriginal price was: £19.96.£15.00Current price is: £15.00. exc vat. -
Sale!
Non Return ValvesTanair S-9048073 | Non Return Valve (NRV) 1/2″ M x 3/8″ M x 1/8″ F – 16 Bar
Original price was: £25.30.£19.17Current price is: £19.17. exc vat. Add to basketTanair S-9048073 replacement non-return valve for compatible compressed-air compressor and receiver installations. Main connections: 1/2″ male x 3/8″ male; auxiliary connection: 1/8″ female. Rated to 16 Bar. Designed to permit airflow in the intended direction and help prevent reverse flow when correctly selected and installed.
In StockOriginal price was: £25.30.£19.17Current price is: £19.17. exc vat. -
Sale!
Non Return ValvesTanair S-9048020 | Non Return Valve (NRV) 1″F X 1″M X 1/4″
Original price was: £54.25.£41.67Current price is: £41.67. exc vat. Add to basketA Tanair valve for compatible compressed air installation, maintenance or replacement work.
In StockOriginal price was: £54.25.£41.67Current price is: £41.67. exc vat. -
Non Return ValvesTanair 12F2FNRV | Non Return Valve (NRV) INLINE (Check Valve) 1/2 f x 1/2 f
£39.63 exc vat. Add to basketTanair inline non-return valve with 1/2" female x 1/2" female connections, designed to allow compressed air to flow in one direction while helping prevent reverse flow in a correctly specified pneumatic system.
In Stock£39.63 exc vat. -
Non Return ValvesTanair 38F38FNRV | Non Return Valve (NRV) INLINE (Check Valve) 3/8 f x 3/8 f
£39.63 exc vat. Add to basketTanair inline non-return valve with 3/8" female x 3/8" female connections, designed to allow compressed air to flow in one direction while helping prevent reverse flow in a correctly specified pneumatic system.
In Stock£39.63 exc vat. -
Non Return ValvesTanair 1118 | Non Return Valve (NRV) 1″M X 1″M X 1/8″F
£55.00 exc vat. Add to basketA Tanair valve for compatible compressed air installation, maintenance or replacement work.
In Stock£55.00 exc vat.
Choosing the Correct Non-Return Valve
NRVs can look very similar while using different connections, pressure ratings or internal arrangements.
Connection Arrangement
Confirm all male/female main and auxiliary threads.
Pressure Rating
Check the valve rating against the compressor, receiver and system.
Flow Direction
Install the valve in the intended direction of airflow.
Application
Match receiver-mounted, compressor-discharge or inline use correctly.
Why Non-Return Valves Matter
A correctly selected NRV helps prevent receiver or downstream pressure flowing back towards the compressor and can support correct unloading and pressure retention.
- Helps prevent reverse airflow
- Supports system pressure retention
- Can support correct compressor unloading
- Helps protect connected components from unwanted backflow
Replacement & Installation
NRV replacement should be completed with the system safely isolated and fully depressurised.
- Confirm thread form and sealing method
- Check the arrow or marked flow direction
- Inspect connected pipework and fittings
- Leak-test after recommissioning
Frequently Asked Questions
What does a non-return valve do?
It allows compressed air to flow in one direction and helps prevent reverse flow.
Can I replace an NRV just because the threads look the same?
No. Check all connections, pressure suitability, flow direction and the intended application.
Do you stock inline check valves?
Yes. The current range includes inline 3/8" and 1/2" female connection options.
Can you help identify a replacement?
Yes. Send the existing valve reference, compressor model and clear photographs of the connections.
Need Help Choosing a Non-Return Valve?
Send us the existing valve reference, compressor details and connection sizes and our team can help identify the correct option.
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