Hydraulic Directional Valve 3 Number of Spools - Hydraulic Valves Valve Ways and Positions 4-Way/3-Position Spool Action No 1 Spring Center To Neutral and 4th Position Detent. No 2 and No 3 Spring Center To Neutral Max Flow - Hydraulic Valves 25 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) 1500 to 3000