Bosch Rexroth | 4WEH10U4X6EW110N9ETDAB10
4WEH10U4X/6EW110N9ETDA/B10
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The 4WEH10U4X/6EW110N9ETDA/B10 valve is produced by Bosch Rexroth for the WEH Directional Spool Valves series. Designed for hydraulic automation, it directs flow in medium-pressure manifolds through electro-hydraulic actuation, so a small solenoid pilot can move the main spool without large electrical power. Its 4/3-way arrangement provides three selectable positions for four service ports, while the U spool symbol defines the specific open and closed paths used in circuit diagrams. A nominal size of NG10 matches ISO 4401-05-05-0-05 mounting surfaces, allowing the valve to fit standard subplates. The concealed manual override marked N9 lets technicians shift the element locally during commissioning or power loss. Working ports withstand 280 bar, supporting presses and mobile equipment, and a peak flow of 160 l/min keeps pressure losses moderate. Internal pilot oil supply from P and internal return to T, both coded ET, eliminate external pilot lines and simplify installation.
The integrated pilot valve is the 6E type, giving fast response and direct compatibility with Rexroth coil assemblies. A minimum pilot pressure of 12 bar must be present for reliable shifting, and permitted pilot pressure rises to 250 bar so the control stage tolerates higher supply levels in boosted circuits. The optional B10 throttle insert sits in the pilot passage to damp oscillations and fine-tune actuation speed. Mounting screws threaded into m6 ports require 12.5 Nm of tightening torque to hold the housing against the manifold without distortion. Predicted mean time to dangerous failure reaches 100 years, indicating a long functional safety interval in duty-cycle applications. Together these parameters define a directional valve that offers stable control performance in compact hydraulic systems.
Technical Specifications
Actuation
Electro-Hydraulic
Manual Override
Concealed (N9)
Max Flow Rate
160 l/min
Max Operating Pressure (p,a,b)
280 bar
Minimum Pilot Pressure
12 bar
Mttfd
100 years
Nominal Size
NG10
Pilot Oil Return
Internal To T (ET)
Pilot Oil Supply
Internal From P (ET)
Pilot Pressure Max
250 bar
Pilot Valve Type
6E
Porting Pattern
ISO 4401-05-05-0-05
Spool Symbol
U
Throttle Insert
B10
Tightening Torque (m6)
12.5 Nm
Way Configuration
4/3-Way
1620 Old Apex Road
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