Does this check valve alow free flow in one direction and holds up to 65 psi in the other? I only ask because i just bought one and it only seems to flow in one direction freely and not in the other regardless of how much pressure i put to it. Maybe i should have bought the 5 psi cracking model.
A: The 65 psi cracking refers to the amount of pressure it takes to lift the check from the seat in the noted flow direction. Flow in the other direction will seat the check and stop flow. The 5 psi model will take less pressure than this one to unseat the check, but will function identically.