Bosch Rexroth | 4WEH22J7X6EW110N9ETK4B08
4WEH22J7X/6EW110N9ETK4/B08
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The 4WEH22J7X/6EW110N9ETK4/B08 valve belongs to the WEH Directional Spool Valves series from Bosch Rexroth and switches hydraulic flow paths in automated machinery. It mounts to manifolds that follow the ISO 4401-08-08-0-05 porting pattern and carries the nominal size NG25 (code W.H 22). Three spool positions are provided with a spring-centered return so the element defaults to center when the solenoid is de-energized. The installed spool follows symbol J and is backed by a minimum pilot pressure of 10.5 bar to guarantee firm centering. A concealed manual override identified by N9 allows local shifting without power, and coil wiring is completed through a DIN EN 175301-803 K4 connector.
Pilot oil supply and return are both internal, indicated by the ET code, removing external pilot tubing. The main flow path tolerates up to 280 bar while the pilot stage is limited to 210 bar. Under rated conditions the valve handles 450 l/min through the J spool layout. A throttle insert with a 0.8 mm orifice (B08) can be fitted to control surge flow at the inlet. The construction omits a preload valve and omits a pressure reducing valve, which simplifies the hydraulic circuit and lowers pressure losses.
Technical Specifications
Electrical Connection
DIN EN 175301-803 (K4)
Manual Override
Concealed (N9)
Max Flow (symbol J)
450 l/min
Max Operating Pressure
280 bar
Max Pilot Pressure
210 bar
Min Pilot Pressure (spring-centered)
10.5 bar
Nominal Size
NG25 (W.H 22)
Pilot Oil Return
Internal (ET)
Pilot Oil Supply
Internal (ET)
Porting Pattern
ISO 4401-08-08-0-05
Preload Valve
None
Pressure Reducing Valve
None
Spool Positions
3
Spool Return
Spring-Centered
Spool Symbol
J
Throttle Insert
Ø 0.8 mm (B08)
1620 Old Apex Road
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