Bosch Rexroth | 4WEH16J7X6EG24N9ETK72LB10-AN
4WEH16J7X/6EG24N9ETK72L/B10 AN
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The 4WEH16J7X/6EG24N9ETK72L/B10 AN valve is produced by Bosch Rexroth within the WEH Directional Spool Valves series. It directs hydraulic flow in automation circuits by shifting a J-configured spool inside an NG16 body. The 24 V DC coil energizes the pilot stage, providing a low-voltage interface for common machine control systems. A 6E pilot valve is integrated so the main spool can move quickly with minimal pilot flow demand. The internal pilot supply and return path coded ET removes the need for external lines, reducing plumbing complexity on the manifold. A maximum flow rating of 300 l/min supports medium to high throughput actuators, while the P, A, and B ports tolerate pressures up to 280 bar for heavy-duty cycles. The porting pattern follows ISO 4401-07-07-0-05, enabling direct mounting on standardized subplates. Cleanliness class ISO 4406 20/18/15 defines the fluid contamination limits required to protect the precision spool and reduce wear.
The concealed N9 manual override permits local actuation during commissioning or power loss without exposing moving parts to contaminants. Pilot circuits may operate up to 250 bar, and the internal pilot return can withstand 210 bar, allowing reliable shifting even in high back-pressure conditions. A minimum pilot pressure of 14 bar is needed in three-position use so the spool centers correctly when de-energized. The B10 throttle insert located in the pilot valve P port meters supply flow to smooth spool transitions and damp pressure surges. To secure the valve, mounting screws must be tightened to 58 Nm, which maintains seal integrity under full system load. An MTTFd of 100 years reflects the statistical lifespan of critical components and supports safety assessments for machinery. These characteristics combine to deliver consistent directional control across demanding hydraulic automation tasks.
Technical Specifications
Cleanliness Class
ISO 4406 (c) 20/18/15
Coil Voltage
24 V DC
Manual Override
Concealed (N9)
Max Flow
300 l/min
Max Pilot Pressure
250 bar
Max Pilot Return (y Internal, Dc)
210 bar
Max Pressure (p,a,b)
280 bar
Min Pilot Pressure (3-pos)
14 bar
Mounting Screw Torque
58 Nm
Mttfd (type Weh)
100 years
Nominal Size
NG16
Pilot Supply/return
Internal (ET)
Pilot Valve Type
6E
Porting Pattern
ISO 4401-07-07-0-05
Spool Symbol
J
Throttle Insert
B10 (Pilot Valve P)
1620 Old Apex Road
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