Bosch Rexroth | 4WEH16Y7X6EG24N9K4V
4WEH16Y7X/6EG24N9K4/V
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The 4WEH16Y7X/6EG24N9K4/V directional spool valve is produced by Bosch Rexroth within the WEH Directional Spool Valves series and is intended to route pressurized fluid in hydraulic automation systems. As a 4-way unit it alternates pressure and return paths between two work ports, and its 2 spool positions enable simple extend-retract control. The spool identified by symbol Y defines the internal flow pattern selected by the solenoids, while the nominal size NG16 establishes port geometry for medium-capacity circuits. A maximum flow of 300 l/min can pass through the valve, and main ports withstand up to 280 bar. Each solenoid is wound for a 24 V DC coil voltage so it can be powered directly from common machine controls. Internal pilot supply through port X feeds the shifting chambers, and external pilot return at port Y prevents back-pressure buildup. A concealed manual override lets technicians move the spool locally during commissioning or electrical failure.
The valve attaches to subplates that follow ISO 4401-07-07-0-05, providing interchangeability with other manifold components. Four M10 x 60 screws per ISO 4762 are required for installation, and they must be tightened to 58 Nm to keep the body rigid and maintain sealing integrity. FKM seals resist high temperature and aggressive hydraulic fluids, ensuring durable operation in demanding environments. The pilot circuit tolerates pressures up to 250 bar, yet it needs at least 14 bar to shift the spool, a range engineers must observe when sizing the control line. These mounting, sealing, and pilot pressure limits complement the flow and main pressure data stated earlier and define the conditions under which the valve performs reliably in automated hydraulic machinery.
Technical Specifications
Coil Voltage
24 V DC
Manual Override
Concealed
Max Flow
300 l/min
Max Operating Pressure
280 bar
Max Pilot Pressure
250 bar
Min Pilot Pressure
14 bar
Mounting Interface
ISO 4401-07-07-0-05
Mounting Screw Torque
58 Nm
Mounting Screws
4x M10 x 60 (ISO 4762)
Nominal Size
NG16
Pilot Return
External (Y)
Pilot Supply
Internal (X)
Seal Material
FKM
Spool Positions
2
Spool Symbol
Y
Valve Function
4-Way
1620 Old Apex Road
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