Bosch Rexroth | H-4WEH25D6X6EG24N9ES2K4B10D3
H-4WEH25D6X/6EG24N9ES2K4/B10D3
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The H-4WEH25D6X/6EG24N9ES2K4/B10D3 valve belongs to the WEH Directional Spool Valves series and is produced by Bosch Rexroth. It is a 4-way electro-hydraulic unit used to shift flow paths in automated hydraulic circuits. The nominal size is 25, allowing high flow within compact manifolds. Installation follows the ISO 4401-08-08-0-05 interface so the body can be bolted to standard subplates. A high-power pilot stage denoted as 6E generates the force required to move the main spool rapidly. The solenoid pilot runs on 24 V DC and receives power through a DIN EN 175301-803 K4 connector. Working ports p, A, and B withstand continuous pressures up to 350 bar, enabling operation on heavy-duty machines.
A concealed N9 manual override lets maintenance staff shift the spool when electrical control is unavailable. Pilot oil is taken internally while the return flow is routed externally, ensuring reliable actuation even when back-pressure builds in the main circuit. The separate return line supports pressures up to 210 bar DC, whereas the tank port t is limited to 250 bar. Switching dynamics can be tuned through an S2 discharge control device, and flow dampening is aided by a Ø 1.0 mm throttle insert identified as B10. Downstream pressure stability is improved by the integrated D3 pressure-reducing valve. Together these features complete the functional profile without exceeding the space or mounting constraints introduced earlier.
Technical Specifications
Electrical Connection
DIN EN 175301-803 (K4)
Manual Override
Concealed (N9)
Max Operating Pressure (p, A, B)
350 bar
Mounting Interface
ISO 4401-08-08-0-05
Pilot Control Valve
High-Power (6E)
Pilot Oil Return
External (E)
Pilot Oil Supply
Internal (E)
Pilot Return (y) Max Pressure
210 bar (DC)
Pressure Reducing Valve
D3
Size (ng)
25
Supply Voltage
24 V DC
Switching Time Adjustment
Discharge Control (S2)
Tank Port (t) Max Pressure
250 bar
Throttle Insert
Ø 1.0 mm (B10)
Type Of Actuation
Electro-Hydraulic
Valve Function
4-Way
1620 Old Apex Road
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