Return pump priming needed?

[Eb0la11]

Yeah Ive got water basically from the returns to the check valve which is about 4-6 inches above the return pump. So there could be a bubble of air between the pump and the check valve.

I am starting to wonder though if my pump is powerful enough to blow open the check valve.

Ive taken it off and hooked it up to a hose and water blows through it when on a hose.

My pump is a 1584 GPH submersible Eco Plus pump.

Are these check valves rated at a certain gph in order to be opened?