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The 4WEH16J72/6SG24N9ETK4/B10 directional spool valve belongs to the WEH Directional Spool Valves series from Bosch Rexroth and routes pressurized fluid in automated hydraulic equipment. It is built in size NG16 with a 4-way layout to reverse actuator flow. Mounting follows the ISO 4401-07-07-0-05 porting pattern for block compatibility. A J-type spool allows a maximum flow of 300 l/min and withstands 280 bar at ports P, A, and B. Electrical actuation is provided by a 24 V DC coil that connects through a DIN EN 175301-803 plug coded K4, giving quick integration into standard wiring systems.
Pilot stages share the main body; oil supply and return are internal under the ET arrangement, so no external pilot hoses are necessary. The pilot circuit tolerates up to 250 bar but needs at least 14 bar in three-position, spring-centered operation for reliable shifting. T-port back pressure can reach 210 bar when the return is internal. An S-type supply-side adjustment lets technicians set switching time to match system dynamics. A concealed manual override marked N9 enables emergency movement without exposing components. A 1.0 mm throttle insert identified as B10 moderates flow during transitions to reduce shock.
Coil Voltage
24 V DC (G24)
Electrical Connection
DIN EN 175301-803 (K4)
Manual Override
Concealed (N9)
Max Flow (ng16, J Spool)
300 l/min
Max Operating Pressure (p,a,b)
280 bar
Max Pilot Pressure
250 bar
Max T-port Pressure (internal Return)
210 bar (DC)
Min Pilot Pressure (3-pos Spring-centered)
14 bar
Pilot Oil Return
Internal (ET)
Pilot Oil Supply
Internal (ET)
Porting Pattern
ISO 4401-07-07-0-05
Spool Symbol
J
Switching Time Adjustment
Supply Control (S)
Throttle Insert
1.0 mm (B10)
Valve Size
NG16
Way Configuration
4-Way
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