2 Spool 11 GPM Hydraulic Directional Control Valve Tractor Loader w/ Joystick Solid Construction High Performance Spring Return Inner Check/Relief Valve Multiple Control Ways Wide Application P, T, N port: 1/2' BSPP,Relief valve: Adjustable,Dimension: 16.1''x5.1''x2.6'' (41x13x6.5 cm),Center system: Open,Max operating pressure: 3600psi,Nominal flow: 11gpm (40l/min)