4WEH22J7X/6EG24N9ETK4/B08

The 4WEH22J7X/6EG24N9ETK4/B08 directional valve is part of the WEH Directional Spool Valves series from Bosch Rexroth and directs hydraulic flow in automated machinery. As a 4-way, 3-position unit, it can route pressure, tank, and two actuator lines to manage bidirectional cylinders. Electro-hydraulic actuation drives the spool with a 24 V DC solenoid so the pilot circuit can be triggered by standard control logic. Nominal size NG25 defines the port geometry and suits medium-frame manifold blocks. The internal (ET) pilot supply uses system pressure, removing the need for an external pilot line. Spool symbol J produces a flow path tailored to meter actuator movement, and the spring-centered return recenters the spool when the coil is de-energized. Maximum flow for this symbol reaches 450 l/min, supporting high-volume circuits, while the valve withstands operating pressures up to 280 bar on ports p, a, and b. A 0.8 mm throttle orifice in the pilot stage limits signal flow to improve stability during rapid shifts.

The interface follows porting pattern ISO 4401-08-08-0-05, allowing the body to bolt directly to standardized subplates. Electrical connection is made through the DIN EN 175301-803 K4 plug, giving quick replacement and consistent sealing with molded gaskets. A concealed manual override permits local actuation for setup or troubleshooting while preventing accidental shifts in regular duty. Pilot control requires at least 4.5 bar to move the spool and tolerates up to 210 bar, so the valve operates reliably across a wide supply window. This pressure range keeps response consistent even when the main pump is cold or during rapid load changes. System fluid must reach cleanliness class ISO 4406 20/18/15 to protect the metering lands from abrasion and to preserve tight internal clearances. Adhering to this purity level extends service life and keeps the spring elements and seals cycling smoothly through repeated directional changes.