WHD Directional Spool Valves

The Bosch Rexroth WHD Directional Spool Valves are hydraulic components designed to control the start, stop, and direction of a fluid flow in demanding hydraulic systems. The "WHD" designation specifically refers to valves whose control piston is moved to the desired switching position using hydraulic actuation. This switching works by requiring external control pressure, which typically ranges from 10 to 100 bar, to shift the spool. Their key function is to direct the flow of hydraulic fluid from the pump (P) port to the consumers (A or B ports) or return it to the tank (T). These robust valves are rated for a high maximum operating pressure of 315 bar and feature a nominal size of 10.