Prince RD512EB5A4B1E Directional Control Valve, Monoblock, Cast Iron, 1 Spool, 4 Ways, 3 Positions, Open Center, Motor Spool, 3 Position Detent, Lever Handle, 3000 psi, 30 gpm, In/Out: 3/4" NPT Female, Work 1/2" NPT Female