Hydraulic Directional Valve 1 Number of Spools - Hydraulic Valves Valve Ways and Positions 4-Way/3-Position Spool Action Detented Max Flow - Hydraulic Valves 20 gpm Inlet Port Size - Hydraulic Valves 3/4 in NPT Outlet Port Size - Hydraulic Valves 3/4 in NPT Max Pressure - Hydraulic Valves 3 000 psi Tandem Center Work Port Size - Hydraulic Valves 1/2 in NPT Relief Valve Range (PSI) 1000 to 2750 Factory Preset Relief Valve Setting (PSI) 1500 psi @ 12 GPM