Bosch Rexroth | 4WEH16D7X6EG24N9EK4B10
4WEH16D7X/6EG24N9EK4/B10
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The 4WEH16D7X/6EG24N9EK4/B10 valve is part of the WEH Directional Spool Valves series from Bosch Rexroth. It controls flow direction in hydraulic automation systems and relies on several defined characteristics. The valve is built to nominal size NG16, setting interface dimensions for compatible subplates. A subplate mounting style permits quick replacement without disturbing pipework. Its porting pattern follows ISO 4401-07-07-0-05 so manifold faces align without additional machining. Electrical connection is made through a DIN EN 175301-803 plug, providing a standardized 24 V DC supply to the solenoid coil. Internal pilot oil supply eliminates a separate feed line, while an external pilot oil return channels pilot flow directly to tank. A concealed manual override allows local shifting when power is unavailable yet protects against unintended actuation. Cleanliness class ISO 4406 20/18/15 is required to minimize particle wear on the spool and seals.
The valve passes up to 300 l/min, giving capacity for high-volume actuators. Rated operating pressure of 280 bar in ports P, A, and B maintains load holding while switching. The pilot stage tolerates a maximum of 250 bar and needs at least 14 bar to shift the main spool, defining the usable control range. Tank port t withstands 250 bar so back pressure does not hinder return flow, and pilot return port y is limited to 210 bar DC to protect the pilot seals. A 1.0 mm throttle orifice is integrated to meter pilot oil and smooth spool movement. Together, these pressure and flow values define safe operating limits and ensure reliable directional control in automated hydraulic machinery.
Technical Specifications
Cleanliness Class
ISO 4406 20/18/15
Electrical Connector
DIN EN 175301-803
Manual Override
Concealed
Max Pilot Return Pressure (y)
210 bar (DC)
Max Tank Port Pressure (t)
250 bar
Maximum Flow
300 l/min
Maximum Pilot Pressure
250 bar
Minimum Pilot Pressure
14 bar
Mounting Type
Subplate
Nominal Size
NG16
Pilot Oil Return
External
Pilot Oil Supply
Internal
Porting Pattern
ISO 4401-07-07-0-05
Rated Operating Pressure (p, A, B)
280 bar
Rated Voltage
24 V DC
Throttle Orifice
1.0 mm
1620 Old Apex Road
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