Bosch Rexroth | 4WEH22E17-7X6EG24N9ETK4B10
4WEH22E17-7X/6EG24N9ETK4/B10
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The 4WEH22E17-7X/6EG24N9ETK4/B10 is manufactured by Bosch Rexroth for the WEH Directional Spool Valves series and controls hydraulic actuators by shifting flow paths with solenoid force. It mounts on circuits built around the ISO 4401-08-08-0-05 porting pattern so installation aligns with common NG25 subplates. The nominal size of NG25 allows the valve body to pass large volumes while keeping pressure loss low in mid-range power units. A 6E high-power pilot valve delivers the necessary shift force, and both pilot oil supply and return are internal, which removes the need for external pilot lines in compact manifolds. The two solenoids run on a 24 V DC coil, and the DIN EN 175301-803 K4 connector provides a standard plug interface for quick wiring. A concealed N9 manual override lets maintenance staff shift the spool during commissioning without exposing the mechanism to debris.
The hydraulic end section tolerates up to 280 bar on ports P, A, and B, enabling the valve to handle high-pressure mobile or industrial drives, while the T port is rated for 250 bar to protect return plumbing. A maximum flow of 450 l/min at symbol E and 280 bar supports fast cylinder movement in large machines. The pilot stage accepts up to 210 bar and still centers the spool with springs once pressure drops below the 10.5 bar minimum, ensuring reliable repositioning after each cycle. Operation is reliable in ambient temperatures from −20 °C to +50 °C so outdoor installations remain functional year-round. An Ø1.0 mm throttle insert identified as B10 moderates pilot flow to damp switching shocks, and the spring-centered assembly with two solenoids weighs 11.9 kg, which guides mounting bracket selection.
Technical Specifications
Ambient Temperature (nbr)
-20 to +50 °C
Coil Voltage
24 V DC
Electrical Connection
DIN EN 175301-803 K4
Manual Override
Concealed (N9)
Max Flow (symbol E, 280 Bar)
450 l/min
Max Operating Pressure (p, A, B)
280 bar
Max Pilot Pressure
210 bar
Max T Port Pressure
250 bar
Min Pilot Pressure (spring-centered)
10.5 bar
Nominal Size
NG25
Pilot Oil Return
Internal (ET)
Pilot Oil Supply
Internal (ET)
Pilot Valve Type
6E High-Power
Porting Pattern
ISO 4401-08-08-0-05
Throttle Insert
Ø1.0 mm (B10)
Weight (two Solenoids, Spring-centered)
11.9 kg
1620 Old Apex Road
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