Bosch Rexroth | 4WEH22D7X6EG24N9ETK4B10
4WEH22D7X/6EG24N9ETK4/B10
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The 4WEH22D7X/6EG24N9ETK4/B10 directional valve belongs to the WEH Directional Spool Valves series and is manufactured by Bosch Rexroth for hydraulic automation circuits. It is electro-hydraulically actuated, meaning a solenoid-controlled pilot stage shifts the main spool to redirect flow. The 4-way arrangement defined by spool symbol D provides four ports for pressure, tank, and dual actuator lines, enabling bidirectional cylinder control. A nominal size of NG25 permits medium to high flow rates while keeping pressure losses moderate. The mounting face follows ISO 4401-08-08-0-05 so the unit fits standardized subplates without additional drilling. Its 24 V DC solenoid voltage aligns with common machine control supplies for straightforward integration. Continuous service is supported up to 280 bar on ports P, A, and B, and the pilot stage withstands 210 bar, allowing the valve to operate in high-pressure systems.
Electrical hookup is made through a DIN EN 175301-803 K4 plug, and the mating connector is not included, allowing the installer to select a cable orientation that matches the panel layout. A concealed manual override lets maintenance staff shift the spool locally when electrical power is absent. Both pilot oil supply and pilot oil return are internal, so no external pilot or drain lines are needed. The Y internal return path endures 210 bar backpressure, maintaining reliable pilot relief under load. A 1.0 mm throttle insert in the B10 configuration meters pilot flow to control spool movement speed. The mean time to dangerous failure is 100 years, giving the valve a long functional safety life.
Technical Specifications
Actuation
Electro-Hydraulic
Electrical Connection
DIN EN 175301-803 (K4)
Manual Override
Concealed
Mating Connector
Not Included
Max Operating Pressure (p,a,b)
280 bar
Max Pilot Pressure
210 bar
Mttfd
100 Years
Pilot Oil Return
Internal
Pilot Oil Supply
Internal
Porting Pattern
ISO 4401-08-08-0-05
Size
NG25
Solenoid Voltage
24 V DC
Spool Symbol
D
Throttle Insert
Ø 1.0 mm (B10)
Way Version
4-Way
Y Internal Return Pressure (dc)
210 bar
1620 Old Apex Road
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