Bosch Rexroth | 4WEH22G7X6EG24N9K4
4WEH22G7X/6EG24N9K4
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The 4WEH22G7X/6EG24N9K4 directional spool valve is produced by Bosch Rexroth for the WEH Directional Spool Valves series and is intended to route pressurized oil for hydraulic automation. It is supplied in size NG25, and subplate mounting allows the body to bolt directly onto standardized bases while the ISO 4401 porting pattern aligns the flow paths. Electrical power is applied through a DIN EN 175301-803 K4 connector that feeds the 24 V DC solenoids. A concealed manual override identified by code N9 lets technicians shift the spool during setup or emergency conditions. The valve withstands 280 bar on ports P, A, and B, and returns fluid through port T at pressures up to 250 bar. For spring-centered operation the pilot supply must provide at least 10.5 bar to move the spool.
Pilot control circuits may reach 210 bar, and the same 210 bar limit applies to port Y when direct-current actuation is used. To reduce wear in the metering edges the hydraulic fluid must meet cleanliness class ISO 4406 20/18/15. Installation is secured by six M12 × 60 screws, each tightened to 100 Nm, to resist dynamic loading. The assembled unit with two solenoids weighs 11.9 kg, so a single technician can position it on the manifold. A mean time to dangerous failure of 100 years supports long-term reliability in safety-related hydraulic systems.
Technical Specifications
Cleanliness Class
ISO 4406 (c) 20/18/15
Electrical Connection
DIN EN 175301-803 (K4)
Manual Override
Concealed (N9)
Max Operating Pressure P/a/b
280 bar
Max Pressure Port T
250 bar
Max Pressure Port Y
210 bar (DC)
Maximum Pilot Pressure
210 bar
Minimum Pilot Pressure (spring-centered)
10.5 bar
Mounting Screws
6x M12 x 60
Mounting Type
Subplate
Mttfd
100 years
Porting Pattern
ISO 4401
Screw Torque
100 Nm
Size
NG25
Solenoid Voltage
24 V DC
Weight (two Solenoids)
11.9 kg
1620 Old Apex Road
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