The Patay Non-Return Valve.
Pump International
£10
The Patay Range of Non-Return Valves A simple solution to prevent back flow of fluid. The Patay Non-Return Valve is made from Polypropylene with Nitrile Valves. It is available in three sizes to suit our most common hose sizes. Our Non-Return Valves are simple and effective, a weighted Nitrile flap (valve) is held open by the flow of fluid through the intake hose. Should the flow reverse, the flap closes, preventing backflow. Made in Cornwall. Note: These Non-Return Valves are not suitable for plumbing applications.
Pump International's own words, read from their page.
Buy from PUMP INTERNATIONAL LIMITEDPrice seen 2026-09-19. Not an affiliate link, we earn nothing from it.






