Bosch Rexroth | 4WEH16E7X6EG24N9ETK4B08D3
4WEH16E7X/6EG24N9ETK4/B08D3
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The 4WEH16E7X/6EG24N9ETK4/B08D3 valve belongs to the WEH Directional Spool Valves series produced by Bosch Rexroth, and it directs hydraulic flow to actuators in automated machinery. It is built to the NG16 nominal size, allowing mounting on size-16 subplates, and its 4-way layout provides pressure, tank, and two service ports for bidirectional cylinder control. Spool type E establishes specific flow paths in neutral and shifted positions, while the ISO 4401-07-07-0-05 porting pattern ensures manifold interchangeability. Internal pilot supply and return simplify plumbing by removing external pilot lines. The solenoid coil is rated for 24 V DC, and wiring is completed through a DIN EN 175301-803 K4 connector. A concealed N9 manual override lets technicians move the spool without electrical power during setup. The hydraulic medium must meet ISO 4406 20/18/15 cleanliness to avoid wear, and an optional 0.8 mm throttle insert labeled B08 can be installed to meter inlet flow.
The valve accommodates up to 300 L/min when used in NG16 circuits with spool E, supporting rapid actuator motion in high-flow systems. Continuous operating pressure at ports P, A, and B can reach 280 bar, matching common industrial supply lines, while pilot pressure may rise to 250 bar without damaging internal components. Spring-centered versions need at least 14 bar pilot pressure to overcome the centering force and shift the spool reliably. An integrated D3 pressure-reducing stage limits pilot feed to 45 bar secondary pressure so the solenoid assembly remains within its design load. These pressure capabilities allow the 4WEH16E7X/6EG24N9ETK4/B08D3 to serve demanding motion sequences while maintaining controlled pilot conditions.
Technical Specifications
Cleanliness Class
ISO 4406 20/18/15
Coil Voltage
24 V DC
Electrical Connector
DIN EN 175301-803 (K4)
Manual Override
Concealed (N9)
Max Flow (ng16, Symbol E)
300 l/min
Max Operating Pressure (p,a,b)
280 bar
Max Pilot Pressure
250 bar
Min Pilot Pressure (ng16, Spring-centered)
14 bar
Nominal Size
16 (NG16)
Pilot Supply/return
Internal/Internal (ET)
Porting Pattern
ISO 4401-07-07-0-05
Pressure Reducing Valve
D3
Secondary Pressure (d3)
45 bar
Spool Symbol
E
Throttle Insert
Ø 0.8 mm (B08)
Way Configuration
4-Way
1620 Old Apex Road
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