Frequently Asked Questions

How do I know how much pilot pressure is required to open a pilot-to-open check valve?

Pilot pressure (port 3) for a pilot-to-open check valve is directly proportional to the load pressure (port 1) . . . the higher the load pressure the more pressure it takes to pilot it open. To calculate the pressure required to release a load, use the following equations

These equations are under ideal conditions and do not consider any backpressure in the circuit.

Pressure required to open pilot-to-open check valve.