Bosch Rexroth | 4WEH16HD7XOF6EG24N9ETDAV
4WEH16HD7X/OF6EG24N9ETDA/V
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The 4WEH16HD7X/OF6EG24N9ETDA/V directional spool valve is produced by Bosch Rexroth for the WEH Directional Spool Valves series. It directs hydraulic flow in automation circuits and uses a nominal size NG16 to fit medium-flow manifolds. Actuation is provided by a 24 V DC solenoid that triggers the built-in 4WE6E high-power pilot valve for fast switching. Both pilot oil supply and return are internal, identified by the ET option, so no external lines are required. A concealed N9 manual override lets maintenance staff shift the spool without energizing the solenoid when commissioning or troubleshooting. The mounting interface conforms to ISO 4401-07-07-0-05, allowing drop-in replacement on standardized subplates. FKM seals are fitted to resist heat and aggressive fluids in industrial environments.
The hydraulic core of the valve handles a maximum flow of 300 l/min, permitting high throughput in NG16 circuits. Passage ports P, A, and B withstand operating pressures up to 350 bar. The pilot stage tolerates a maximum of 250 bar, providing margin for remote control loops. Port T is rated for 250 bar, enabling back-pressure operation without auxiliary drains. Port Y is limited to 210 bar, maintaining integrity of the internal drain passage. Reliable end-position switching is achieved once the pilot supply reaches at least 14 bar. These ratings support demanding load-holding and motion sequences in mobile or industrial hydraulic machines.
Technical Specifications
Manual Override
Concealed (N9)
Max Flow (ng16, Hd)
300 l/min
Max Operating Pressure (p, A, B)
350 bar
Max Pilot Pressure
250 bar
Max Pressure Port T
250 bar
Max Pressure Port Y (dc)
210 bar
Min Pilot Pressure (hydraulic End Pos)
14 bar
Mounting Interface
ISO 4401-07-07-0-05
Nominal Size
NG16
Pilot Oil Return
Internal (ET)
Pilot Oil Supply
Internal (ET)
Pilot Valve Type
4WE6E (High-Power)
Seal Material
FKM
Solenoid Voltage
24 V DC
1620 Old Apex Road
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