Bosch Rexroth | 4WEH16E7X6EW110N9ES2K4B10
4WEH16E7X/6EW110N9ES2K4/B10
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The 4WEH16E7X/6EW110N9ES2K4/B10 directional valve is produced by Bosch Rexroth and belongs to the WEH Directional Spool Valves series. It directs flow between pressure and actuator lines in hydraulic automation systems. The valve uses a 4-way arrangement with an E spool profile to connect and block ports in predefined patterns, and it fits the nominal size NG16 envelope. A spring-centered mechanism returns the spool to its mid position once the solenoids are de-energized, ensuring predictable neutral status. The pilot oil supply is internal, so no external pilot line is required. The E spool passes up to 300 l/min, allowing high throughput for medium frame machinery. System pressure at ports P, A, and B can reach 280 bar during operation. Pilot control needs at least 14 bar to shift the spool and can accept up to 250 bar without damage.
Mounting follows the ISO 4401-07-07-0-05 porting pattern so the valve mates with standard CETOP 07 subplates. Electrical actuation is connected through a DIN EN 175301-803 form K4 plug, simplifying wiring in manifold blocks. A concealed manual override designated N9 permits local actuation when power is unavailable. Switching speed can be tuned with the discharge control identified as S2, enabling adaptation to cycle-time requirements. A 1.0 mm throttle insert marked B10 may be installed to restrict flow for smoother motion starts. The pilot return Y channel tolerates 160 bar, preventing back-pressure failures in closed systems, and the external T port is rated for 250 bar to suit high back-pressure tank lines. Together, these features align the valve with applications that demand reliable directional control under variable pressure and flow conditions.
Technical Specifications
Centering Method
Spring-Centered
Electrical Connection
DIN EN 175301-803 (K4)
Manual Override
Concealed (N9)
Max Flow (ng16, E Spool)
300 l/min
Max Operating Pressure (p, A, B)
280 bar
Max Pressure Pilot Return Y (ac)
160 bar
Max Pressure Port T (y External)
250 bar
Maximum Pilot Pressure
250 bar
Minimum Pilot Pressure
14 bar
Nominal Size
NG16
Pilot Oil Supply
Internal
Porting Pattern
ISO 4401-07-07-0-05
Spool Symbol
E
Switching Time Adjustment
Discharge Control (S2)
Throttle Insert
Ø 1.0 mm (B10)
Way Configuration
4-Way
1620 Old Apex Road
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