Pressure Relief Valve Pressure Range - Hydraulic Valves 800 to 10 000 psi Port Size - Hydraulic Valves 3/8 in NPT Max Flow - Hydraulic Valves 4 gpm Body Material - Hydraulic Valves Steel Check Valve Opening Pressure 1600 psi at Max Pressure Overall Height 7.62 in Overall Length 4.53 in Overall Width 3.12 in