Bosch Rexroth | 4WEH16R7X6EG24N9ETDALB10
4WEH16R7X/6EG24N9ETDAL/B10
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The 4WEH16R7X/6EG24N9ETDAL/B10 directional spool valve belongs to the WEH Directional Spool Valves series manufactured by Bosch Rexroth. It employs electro-hydraulic actuation so a small pilot flow can shift the main spool for automated pressure control in hydraulic machinery. Built to nominal size NG16 with a 4-way configuration, it links pressure, tank, and two work ports for bidirectional actuator control. The R-coded spool provides designated flow paths, and three spool positions allow the assembly to spring back to center when de-energized. A 24 V DC solenoid drives the 6E pilot stage for electrical command input, while a concealed N9 manual override lets maintenance staff move the pilot internally when needed. Pilot supply and return are routed internally (ET), removing external hoses and cutting installation time.
The valve supports flows up to 300 l/min, enabling high-volume circuits to operate without excessive pressure loss. Ports P, A, and B handle operating pressures to 280 bar, while the pilot circuit tolerates 250 bar and needs at least 14 bar to re-center the spring assembly. A Ø 1.0 mm throttle insert labeled B10 can be fitted to damp supply surges and smooth switching. Mounting follows the ISO 4401 porting pattern so the unit drops onto standard subplates. With two solenoids and spring centering hardware installed, the assembly weighs 8.9 kg, which should be considered when sizing manifold supports.
Technical Specifications
Actuation Type
Electro-Hydraulic
Coil Voltage
24 V DC
Manual Override
Concealed (N9)
Max Flow (ng16, R)
300 l/min
Max Operating Pressure (p, A, B)
280 bar
Max Pilot Pressure
250 bar
Min Pilot Pressure (spring-centered)
14 bar
Nominal Size
NG16
Pilot Supply/return
Internal (ET)
Pilot Valve Type
6E
Porting Pattern
ISO 4401
Spool Positions
3
Spool Symbol
R
Throttle Insert
Ø 1.0 mm (B10)
Way Configuration
4-Way
Weight (two Solenoids, Spring-centered)
8.9 kg
1620 Old Apex Road
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