Bosch Rexroth | 4WEH16E7X6EG96N9K4
4WEH16E7X/6EG96N9K4
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The 4WEH16E7X/6EG96N9K4 valve belongs to the WEH Directional Spool Valves series from Bosch Rexroth and is used to switch flow paths in hydraulic automation systems. It is electro-hydraulic actuated, so an electrical signal drives a pilot stage that shifts the main spool represented by symbol E. The unit features a 4/3-way configuration in size NG16, giving three center positions and four ports for medium-size circuits. Pilot oil is supplied externally through port X, and the pilot coil operates at 96 V DC to trigger spool movement. When the e-spool is fully shifted the valve can pass up to 300 l/min, while ports p, a, and b may be pressurized to 280 bar during service. These operating limits allow the model to handle high-demand cylinders and motors without excess pressure loss.
Pilot control limits include a maximum of 250 bar and a minimum of 14 bar for the spring-centered mechanism, ensuring reliable return to the neutral position. Port Y, which drains externally, tolerates 210 bar. Electrical hookup is through a DIN EN 175301-803 K4 connector, and a concealed manual override identified as N9 is available for local actuation during commissioning. The mounting face follows ISO 4401-07-07-0-05, and screws securing the body should be tightened to 58 Nm with a ±10 % allowance. The valve weighs 8.9 kg, so it can be installed by one technician using standard tools.
Technical Specifications
Actuation
Electro-Hydraulic
Coil Voltage (pilot Valve)
96 V DC
Electrical Connection
DIN EN 175301-803 (K4)
Manual Override
Concealed (N9)
Max Flow (e Spool)
300 l/min
Max Operating Pressure (p/a/b)
280 bar
Max Pilot Pressure
250 bar
Max Pressure Port Y (external)
210 bar
Min Pilot Pressure (spring-centered)
14 bar
Pilot Oil Supply
External (X)
Porting Pattern
ISO 4401-07-07-0-05
Screw Tightening Torque
58 Nm ±10%
Size
NG16
Spool Symbol
E
Way Configuration
4/3-Way
Weight
8.9 kg
1620 Old Apex Road
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