Feelers 1/4" One Way Inline Check Valve Non-Return One-Way Air Water Gas Check Valve Ozone Resistance PVDF, Pack of 4 4PCS

Used to replace my defunct back flow on windshield wash. Working better than when new. Plus I have 3 backups!

Salieron buenas las válvulas pero caras

Not able to use in my hot-tub ozone intake. The suction needed to overcome the spring force of this directional valve was more than my system could provide. This valve wouldn’t allow ozonated air to pass.My spa uses a small 1/5 hp circulation pump that has very little suction. This one-way valve would not flow. It took all my breath to operate this valve.Valve appears to be good quality. Just not good for my application. I kept the valves but if I had know there suction requirements, I would not have purchased them.

I used these with a chunk of hose to perform a solo brake bleed. Worked perfectly.

Fonctionne è merveille.