That would seem to defeat the point of putting it inline, no?

My system is set up to draw off of 4 10lpm oxycons and is pretty much at optimum efficiency right at 80psi. For over 80psi, I have a a...

Has anyone actually used an adjustable check valve with their system? I got a 50-100psi one and used a craftsman shop compressor to measure/set the cracking pressure to 80psi, but when I attempted to...