Bosch Rexroth | 4WEH10E4X6EW110N9DAL
4WEH10E4X/6EW110N9DAL
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The 4WEH10E4X/6EW110N9DAL directional valve belongs to the WEH Directional Spool Valves series manufactured by Bosch Rexroth for hydraulic automation circuits. It employs a 4-way flow path and provides three spool positions defined by symbol E to route fluid between service ports. The valve is built in size NG10 and mounts on a subplate that follows the ISO 4401-05-05-0-05 porting pattern, simplifying exchange with other standardized hardware. An external pilot supply at port X feeds the integrated 6E high-power pilot stage, while an external pilot return through port Y keeps back pressure away from the control spool. These construction features enable remote actuation and consistent switching performance in manifold systems.
For capacity planning, the valve handles up to 160 l/min with the symbol E spool and endures 280 bar on the pressure, A, and B ports during continuous duty. The pilot circuit tolerates a maximum of 250 bar and needs at least 12 bar to shift the spring-centered spool. A concealed N9 manual override lets technicians move the spool mechanically when electrical power is unavailable. The mean time to dangerous failure for the WEH design is rated at 100 years, supporting long-term reliability in safety-related machinery. Together, these pressure limits, flow capacity, and service features establish clear performance boundaries for hydraulic systems that require dependable directional control.
Technical Specifications
Manual Override
Concealed (N9)
Max Flow (ng10, Symbol E)
160 l/min
Max Operating Pressure (p,a,b)
280 bar
Max Pilot Pressure
250 bar
Min Pilot Pressure (3-pos Spring)
12 bar
Mounting
Subplate
Mttfd (type Weh)
100 years
Pilot Return
External (Y)
Pilot Supply
External (X)
Pilot Valve Version
6E (High-Power)
Porting Pattern
ISO 4401-05-05-0-05
Size
NG10
Spool Positions
3
Spool Symbol
E
Way Configuration
4-Way
1620 Old Apex Road
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