Bosch Rexroth | 4WEH22J7X6EW110N9EDK25LB10
4WEH22J7X/6EW110N9EDK25L/B10
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The 4WEH22J7X/6EW110N9EDK25L/B10 valve belongs to the WEH Directional Spool Valves series from Bosch Rexroth and directs hydraulic flow in automated machinery. It provides a 4-way, 3-position spring-centered function so actuators can extend, retract, or hold in neutral with the springs restoring the spool to center when de-energized. Its nominal size NG25 (W.H 22) matches medium-capacity manifolds, and the J spool profile supports quick reversals. A maximum flow of 450 l/min can pass through this spool, while ports p, a, and b withstand 280 bar to accommodate high-pressure systems. The integrated High-Power 6E pilot control valve shifts the spool rapidly; internal pilot oil supply simplifies plumbing, and an external return path limits back pressure. Pilot circuits may reach 210 bar, ensuring reliable operation even when main pressure varies.
Stable switching begins at a minimum pilot pressure of 10.5 bar in the spring-centered design. A concealed N9 manual override lets technicians reposition the spool locally during setup or fault recovery. The ISO 4401-08-08-0-05 mounting face enables direct installation on standardized subplates. Six M12 × 60 screws fasten the housing to the manifold, and each screw is tightened to 100 Nm to resist loosening under vibration. A throttle insert with a 1.0 mm orifice, marked B10, restricts pilot flow to soften shifting shocks. The assembly weighs 11.9 kg when equipped with two solenoids and the centering springs, allowing one-person handling during maintenance.
Technical Specifications
Manual Override
Concealed (N9)
Max Flow (symbol J)
450 l/min
Max Operating Pressure (p,a,b)
280 bar
Max Pilot Pressure
210 bar
Min Pilot Pressure (3-pos Spring-centered)
10.5 bar
Mounting Interface
ISO 4401-08-08-0-05
Mounting Screws
6x M12 x 60
Nominal Size
NG25 (W.H 22)
Pilot Control Valve
High-Power 6E
Pilot Oil Return
External (Y)
Pilot Oil Supply
Internal (E)
Screw Tightening Torque
100 Nm
Spool Symbol
J
Throttle Insert
Ø 1.0 mm (B10)
Valve Function
4-Way, 3-Position (Spring-Centered)
Weight (2 Solenoids, Spring-centered)
11.9 kg
1620 Old Apex Road
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