Bosch Rexroth | 4WEH16E7X6EG24N9TK4
4WEH16E7X/6EG24N9TK4
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The 4WEH16E7X/6EG24N9TK4 valve belongs to the WEH Directional Spool Valves series from Bosch Rexroth and routes hydraulic oil to actuators in automated machinery. It uses the NG16 nominal size to match medium-duty circuits, and its ISO 4401-07-07-0-05 porting pattern lets it mount on standard subplates. A spring-centered spool passes up to 300 l/min, providing high flow capability. Service lines P, A, and B tolerate 280 bar, while port T is limited to 250 bar to protect the return path. Pilot oil is supplied externally through port X and returned internally through port T, reducing external hoses. The pilot stage accepts pressures to 250 bar and needs at least 14 bar to shift, giving a wide operating window for mobile or industrial pumps.
The two solenoid coils operate on 24 V DC, and each coil connects with a DIN EN 175301-803 K4 plug for straightforward wiring. A concealed N9 manual override allows manual actuation during commissioning or power loss. System fluid must meet ISO 4406 20/18/15 cleanliness so spool lands and seals remain reliable. The internal pilot return channel withstands 210 bar, preventing control loss when backpressure rises. Functional safety is supported by an MTTFd of 100 years, minimizing replacement intervals in long-life equipment. With both solenoids and spring centering installed, the valve weighs 8.9 kg, which installers must support in manifold or panel layouts.
Technical Specifications
Cleanliness Class
ISO 4406 (c) 20/18/15
Coil Voltage
24 V DC
Electrical Connection
DIN EN 175301-803 (K4)
Manual Override
Concealed (N9)
Max Flow (spring-centered)
300 l/min
Max Operating Pressure (p, A, B)
280 bar
Max Operating Pressure (port T)
250 bar
Max Pilot Pressure
250 bar
Max Pilot Return Pressure (internal)
210 bar
Min Pilot Pressure
14 bar
Mttfd
100 years
Nominal Size
NG16
Pilot Oil Return
Internal (T)
Pilot Oil Supply
External (X)
Porting Pattern
ISO 4401-07-07-0-05
Weight (two Solenoids, Spring-centered)
8.9 kg
1620 Old Apex Road
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