Amazon.com: Chief Directional Control Valves 1 Spool 4 Way 4 Position - Hydraulic Directional Control Valve with Spring Center - 25 GPM, 1/2" NPT Work Port, 3/4" NPT Outlet Port, 3000 PSI, 16 lb, 220572 : Industrial & Scientific
Amazon.com: ALL-CARB Hydraulic Valve 1 Spool Hydraulic Directional Control Valve 4 Way 3 Place Spring Center 21 GPM 3600 PSI SAE Ports for Tractors Loaders Tanks : Industrial & Scientific