Bosch Rexroth | 4WEH16E7X6EW110N9ETK4B08
4WEH16E7X/6EW110N9ETK4/B08
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The 4WEH16E7X/6EW110N9ETK4/B08 valve belongs to the WEH Directional Spool Valves series from Bosch Rexroth and is intended to switch hydraulic flow paths in automated circuits. Its electro-hydraulic actuation converts an electrical pilot signal into hydraulic force, so the main spool moves without large solenoids. The unit performs a 4-way function, giving two controlled flow positions and a neutral state for typical cylinder or motor circuits. A nominal size of NG16 fixes the port geometry for installations that require this cavity. The spool shifts once pilot pressure reaches the 14 bar minimum, and the P, A, and B ports can be loaded continuously to 280 bar, enabling work on medium-to-high pressure machines.
A high-power pilot valve generates the hydraulic boost for fast switching and can tolerate pilot pressures up to 250 bar during transient peaks. Return flow through port T is internally routed and may reach 160 bar without damaging seals. A throttle insert with a 0.8 mm orifice is fitted to smooth pressure changes and reduce shock when the spool moves. Electrical termination is prepared for a DIN EN 175301-803 connector, while the mating plug must be supplied separately by the installer. A concealed manual override is provided so technicians can shift the spool during setup or in the event of power loss.
Technical Specifications
Actuation Type
Electro-Hydraulic
Electrical Connection
Without mating connector; connector DIN EN 175301-803
Manual Override
Concealed
Max Operating Pressure P/a/b
280 bar
Max Pilot Pressure
250 bar
Max Pressure Port T (internal Return, Ac)
160 bar
Min Pilot Pressure
14 bar
Nominal Size
NG16
Pilot Valve Type
High-Power
Throttle Insert
Ø0.8 mm
Valve Function
4-Way
1620 Old Apex Road
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