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The 4WEH10C4X/6EG24N9K4 valve is produced by Bosch Rexroth within the WEH Directional Spool Valves series. It directs hydraulic flow in automation circuits by shifting a spool with an electrically actuated pilot stage. With a nominal size of NG 10, the valve matches manifolds designed for medium-flow systems. It passes up to 160 l/min under symbol C, allowing rapid cylinder or motor movement in machines that need moderate throughput. Working ports P, A, and B tolerate 280 bar, so the device can be installed in high-pressure lines without additional pressure reducers. Pilot supply is taken externally through port X, while pilot oil returns externally through port Y, which simplifies troubleshooting by isolating the control oil from tank lines. Electrical actuation is provided through a DIN EN 175301-803 K4 connector, ensuring compatibility with standard industrial wiring looms. The valve bolts onto subplates that follow ISO 4401-05-05-0-05, and four M6 × 45 screws secure it against vibration.
The pilot stage withstands 250 bar, preventing control signal collapse when the main circuit pressure rises. Port T, connected externally, is rated for 280 bar, allowing the return gallery to share the full system pressure during dynamic transients. The housing operates in ambient temperatures from ‑20 °C to +50 °C, so the valve can be mounted near engines or in unheated facilities. Fluid within the work ports is permitted between ‑20 °C and +80 °C, matching common mineral oils used in mobile and industrial equipment. Hydraulic cleanliness must not exceed class 20/18/15 per ISO 4406 (c); this limit reduces spool wear and keeps shifting forces consistent. NBR seals resist mineral oil and remain flexible across the temperature range. These environmental limits support reliable spool positioning over prolonged duty cycles.
Electrical Connector
DIN EN 175301-803 (K4)
Fluid Cleanliness Class
20/18/15 (ISO 4406(c))
Max Ambient Temperature
+50 C
Max Flow (symbol C, Ng10)
160 l/min
Max Fluid Temperature (ports)
+80 C
Max Operating Pressure (p, A, B)
280 bar
Max Pilot Pressure
250 bar
Max Pressure Port T (y External)
280 bar
Min Ambient Temperature
-20 C (NBR)
Min Fluid Temperature (ports)
-20 C (NBR)
Mounting Interface
ISO 4401-05-05-0-05
Mounting Screws
4x M6 x 45
Nominal Size
NG 10
Pilot Return
External (Y)
Pilot Supply
External (X)
Seal Material
NBR
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