💪 High-Performance RUSSELL 650603 Black Anodize Check Valve - 6an Male to 6an Male Review

Inexpensive, looks like -6 on the inside. Compare to Jeg's which appears to use a cheap rivet and costs more than double.

I put this after the fuel filter before the regulator to keep the fuel pressure from dropping when the car is off. Doesn't work, still losing pressure, seems worse now. I haven't uninstalled it yet to try something else.

Right out of the box I was able to blow both ends freely I took it apart to check everything was ok. So I installed it anyway. And it doesn't work, it slows the reflux but doesn't stop it. Who knows, maybe I have a bad part. But mine doesn't work.

They are more durable than other designs. I installed one on the tank return and one on the tank outlet. Tests on my fuel pump check valves showed that they were leaking fuel when the engine was off. So far those two check valves have worked better than I had hoped. XJ Cherokee starts immediately!

I bought this for my 2007 Toyota FJ Cruiser 4.0L. Two weeks and no problems so far. When comparing check valves and considering a cheaper type, please do your homework. I spent so much time buying the cheap version. The URGENEX 2 pack 8mm/5/16 inch chrome plated aluminum one way check valve will not function or hold in any vehicle with fuel pressure around 50psi.

I installed this check valve because there was a problem with the Nissan Sentra that would not hold fuel pressure after the ignition was turned off (all fuel pressure was gone immediately). It turned out that the problem was in both the fuel line to the engine and the fuel line to the gas tank with the fuel pump, but this check valve really helped with acceleration problems where immediately releasing the accelerator pedal could cause a noticeable decrease in speed. That check valve helped in…

Well, first impressions aren't great. You can blow in any direction from the box. With my air compressor I shot air both ways and then the valve stopped flowing in the opposite direction so maybe that fixed the problem or it's working. Mouth blowing is very, very limiting though. I bought this valve and another brand that costs twice as much, the more expensive one has almost no restriction in which direction the flow should go and perfectly and quickly blocks the flow in the opposite…