4WEH16W7X/6EW110N9ETK4/B10

The 4WEH16W7X/6EW110N9ETK4/B10 valve is produced by Bosch Rexroth within the WEH Directional Spool Valves series. As a four-way unit, it directs hydraulic flow to actuators in automated systems that require rapid and repeatable position changes. The NG16 nominal size matches medium-flow circuits while keeping manifold interfaces standardized. Ports P, A, and B can be pressurized up to 280 bar, so the valve handles high system loads without external reinforcement. A pilot stage begins to shift the spool once the internal supply reaches at least 14 bar, allowing low-pressure standby pumps to operate the control line. Internal pilot oil supply reduces external plumbing, and a concealed manual override lets maintenance staff reposition the spool without exposing the mechanism. Electrical actuation is provided through a DIN EN 175301-803 connector, but a mating plug is not included with the valve.

Pilot control may rise to 250 bar, giving reserve force to move the main spool against contamination or viscosity changes, and the T port is allowed the same 250 bar back-pressure to suit long return lines. Internal pilot oil return further minimizes external hoses and keeps leakage inside the housing. A throttle insert with a 1.0 mm orifice is installed to damp pressure surges during shifting and stabilize the pilot circuit. The valve weighs 8.9 kg, which aids rigid mounting on subplates or manifolds without additional supports. Together these characteristics establish dependable switching behavior for hydraulic automation where compact, internally piloted control elements are preferred.