Threaded Cartridge Valve Pilot-Operated Relief Valve Cavity Size C10-2 Max Pressure - Hydraulic Valves 5 000 psi Max Flow - Hydraulic Valves 30 gpm Pilot operated relief valves are designed for continuous duty applications. Due to their stability and low pressure rise the pilot operated relief is the best option for setting the system pressure of a hydraulic system. Voltage - - Termination Fits Valve Number -