4WEH10D4X/6EW110N9S2DA/V

The 4WEH10D4X/6EW110N9S2DA/V valve belongs to the WEH Directional Spool Valves series and is built by Bosch Rexroth for hydraulic automation that requires precise directional control of pressurized oil. The valve is electro-hydraulically actuated, so an electrical pilot converts control signals into hydraulic force that shifts the main spool. Its 4-way flow path directs pressure from the pump to either work port and returns oil to tank, enabling bidirectional cylinder or motor motion. The NG10 nominal size matches systems that use size 10 subplates, while the ISO 4401-05-05-0-05 mounting interface lets the unit bolt directly to standard CETOP 5 manifolds. A maximum flow capacity of 160 l/min supports medium-capacity circuits, and the main ports P, A, and B withstand operating pressures up to 280 bar. External pilot oil supply keeps the pilot stage free from pressure fluctuations in the main line, and external pilot oil return channels the pilot flow back to tank without adding back pressure.

The pilot section is rated for pressures up to 250 bar, providing headroom for reliable shifting even in high-pressure control lines, while a minimum of 10 bar is required on the two-spool spring design to ensure full movement of the spool. A concealed manual override is included, allowing maintenance personnel to shift the valve locally without exposing the operator to moving components or causing unintended activation. Switching time can be adjusted through a discharge control so the user can match spool transition speed to system dynamics and prevent pressure shocks. FKM seal material is used throughout the valve to tolerate elevated fluid temperatures and aggressive synthetic hydraulic oils encountered in industrial machinery, and the high chemical resistance provided by this elastomer contributes to longer service intervals in abrasive environments.