Bosch Rexroth | 4WEH22R7X6EW110N9ETDALB10P4-5
4WEH22R7X/6EW110N9ETDAL/B10P4 5
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The 4WEH22R7X/6EW110N9ETDAL/B10P4 5 valve belongs to the WEH Directional Spool Valves series from Bosch Rexroth. It directs pressurized fluid in automated hydraulic circuits and is built in NG25 size for systems that require high flow capacity. The 4-way design provides separate pressure, tank, and dual actuator lines, while three discrete spool positions permit extend, retract, or neutral states. Spool code R defines the flow paths selected in each position, and the spool is centered by a spring so the valve returns to neutral when pilot pressure is removed. The body installs on a subplate, and port locations follow the ISO 4401-08-08-0-05 pattern to match standardized manifolds. Both pilot oil supply and return are internal, eliminating external lines for X and Y connections and simplifying manifold layouts.
The pilot stage is energized with a 110 V AC solenoid, and flow entering the pilot gallery passes through a 1.0 mm throttle orifice to moderate shifting speed. The valve responds once pilot pressure exceeds 10.5 bar and can handle pilot lines up to 210 bar without damage. On the main stage, ports P, A, and B tolerate service pressures to 280 bar for heavy-duty cylinders. The damping section includes a preload valve adjusted to 4.5 bar so the spool begins to move predictably at low differential pressure. An N9 concealed manual override lets maintenance staff shift the spool locally without exposing moving parts. These features keep actuation precise and reliable in industrial motion sequences.
Technical Specifications
Control Spool Return
Spring-Centered
Manual Override
Concealed (N9)
Max Operating Pressure (p,a,b)
280 bar
Maximum Pilot Pressure
210 bar
Minimum Pilot Pressure
10.5 bar
Mounting Type
Subplate
Pilot Oil Return
Internal (Y)
Pilot Oil Supply
Internal (X)
Pilot Throttle Orifice
1.0 mm
Pilot Voltage
110 V AC
Porting Pattern
ISO 4401-08-08-0-05
Preload Valve Setting
4.5 bar
Size
NG25
Spool Positions
3
Spool Symbol
R
Way Configuration
4-Way
1620 Old Apex Road
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