Bosch Rexroth | 4WEH22R7X6EG24N9ETK4B10
4WEH22R7X/6EG24N9ETK4/B10
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The 4WEH22R7X/6EG24N9ETK4/B10 valve is manufactured by Bosch Rexroth as part of the WEH Directional Spool Valves series and is intended to direct hydraulic flow in automated systems. Its 4-way configuration routes pressure and return lines to two actuator ports for bidirectional motion, and three spool positions provide distinct start, stop, and neutral states. The R spool geometry defines overlap characteristics that balance leakage with response speed. A 24 V DC solenoid energizes the pilot stage so the valve can tie into common machine control voltages. Nominal size NG25 accommodates the flow rates found in medium-power units, while subplate mounting enables removal without disturbing pipework. The ISO 4401-08-08-0-05 port pattern aligns with standardized manifolds, and a DIN EN 175301-803 electrical plug allows sealed, quick-change coil wiring.
A concealed manual override lets technicians shift the valve during commissioning or power loss without exposing internal parts to contamination. Pilot oil is routed internally for both supply and drain, designated as the ET option, which eliminates external pilot lines and simplifies plumbing. The pilot stage operates between a minimum pressure of 10.5 bar and a maximum of 210 bar, giving a broad control range. Main ports P, A, and B withstand up to 280 bar, while the T port is limited to 250 bar, protecting the return circuit. A built-in 1.0 mm throttle insert restricts pilot flow to damp switching shocks and improve stability. These pressure capabilities, auxiliary controls, and flow conditioning features support consistent performance in automated hydraulic machinery.
Technical Specifications
Electrical Connection
DIN EN 175301-803
Manual Override
Concealed
Max Pilot Pressure
210 bar
Max Port T Pressure
250 bar
Max Pressure (p, A, B)
280 bar
Min Pilot Pressure
10.5 bar
Mounting Type
Subplate
Nominal Size
NG25
Pilot Oil Flow
Internal/Internal (ET)
Port Pattern
ISO 4401-08-08-0-05
Solenoid Voltage
24 V DC
Spool Positions
3
Spool Type
R
Throttle Insert
1.0 mm
Way Configuration
4-Way
1620 Old Apex Road
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