1/4インチ NPT オス-オス スレッド 304 ステンレススチール 逆止弁 一方向 ノンリターンバルブ 水 オイル ガス 逆止弁 1個

1/4 Inch NPT Male to Male Thread 304 Stainless Steel Check Valve One Way Non-Return Valve for Water Oil Gas Check Valve 1PCS, June 6+12 2024 $17.99 Sold by XiaChunUS Essential piece of my crazy project, making my own soda with a CO2 generator. I bought two of these so I could hot swap two different cap assemblies for testing and these check valves never leaked. In my project, they routinely see 300psi through them and hold 90psi of CO2. I have no doubt they can hold lots more. I have had other cheaper check valves of inferior materials that held liquids just fine but leaked with gases. These don't leak with gases - CO2. I did have some crud (flake of dried epoxy) get stuck in the valve that I had to disassemble and blow out, but that was my fault. What was really nice was how easy it was to disassemble/assemble with needle nose pliers.

Perfectly good check valve but I tried running it on a car with a mechanical fuel pump and it doesn't generate enough pressure to open the check valve. Probably only should be used on fuel injected vehicles.

Valve has all metal parts and one rubber o ring, will fall apart with vibrations, has nothing locking the internals in place, once the retainer plate comes out the plunger will get stuck on the close position so be ware of this issue

Exactly as described. Will do business again.