Hydraulic Directional Valve, 2 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: 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