Bosch Rexroth | 4WEH16D7X6EG96N9EK4B10V
4WEH16D7X/6EG96N9EK4/B10V
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The 4WEH16D7X/6EG96N9EK4/B10V directional valve is produced by Bosch Rexroth for the WEH Directional Spool Valves series. It shifts pressure and tank lines in hydraulic automation systems where remote pilot operation is required. The valve is built in nominal size NG16, matching cavity dimensions common to medium-flow manifolds. Its 4-way flow pattern establishes four separate ports for pressure, tank, and two actuator lines. Two discrete spool positions permit switching between alternate flow states, and a spring returns the spool to its default position when pilot pressure is removed. Pilot oil is sourced internally, so no external feed line is necessary, while the pilot drain is routed externally to prevent back-pressure on the pilot stage. Manifold interface conformity is maintained with the ISO 4401-07-07-0-05 porting pattern.
The hydraulic section passes up to 300 l/min, and the main pressure ports tolerate 280 bar during continuous service. The pilot stage accepts pressures up to 250 bar yet needs at least 14 bar to shift the spool, while the drain line may see a maximum of 210 bar in direct current operation. Electrical connection is made through a DIN EN 175301-803 type K4 plug, and a concealed manual override labeled N9 permits local actuation without energizing the solenoid. A throttle insert with a 1.0 mm orifice, coded B10, restricts pilot flow for controlled response. Fluid sealing relies on FKM elastomers, giving compatibility with mineral oils and many synthetic fluids.
Technical Specifications
Control Spool Return
Spring
Electrical Connection
DIN EN 175301-803 (K4)
Manual Override
Concealed (N9)
Max Flow
300 l/min
Max Operating Pressure (p/a/b)
280 bar
Max Pilot Pressure
250 bar
Max Pilot Return Pressure (y)
210 bar (DC)
Min Pilot Pressure
14 bar
Nominal Size
NG16
Pilot Oil Return
External (Y)
Pilot Oil Supply
Internal (E)
Porting Pattern
ISO 4401-07-07-0-05
Seal Material
FKM (V)
Spool Positions
2
Throttle Insert
Ø1.0 mm (B10)
Way Configuration
4-Way
1620 Old Apex Road
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