Bosch Rexroth | 4WEH16Y7X6EW110N9ETS2K4B10D3
4WEH16Y7X/6EW110N9ETS2K4/B10D3
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The 4WEH16Y7X/6EW110N9ETS2K4/B10D3 valve belongs to the WEH Directional Spool Valves series produced by Bosch Rexroth for hydraulic automation systems that require precise flow direction. It is built in nominal size 16, giving a flow area suitable for mid-range circuits. A maximum operating pressure of 280 bar lets the spool manage high-pressure lines without external relief devices. The valve can pass up to 250 l/min through symbol Y at 280 bar, allowing rapid actuator movement. Internal pilot oil supply (ET) eliminates the need for a separate feed line, and the internal pilot return further simplifies plumbing. To protect close tolerances, the unit demands oil cleanliness of ISO 4406 20/18/15. A DIN EN 175301-803 K4 electrical connector mates directly with standard solenoid cables, while a concealed manual override (N9) permits local shifting when power is unavailable.
The control stage tolerates pilot pressure up to 250 bar, and the spool shifts once at least 14 bar is present on a spring-centered version, ensuring reliable actuation across the full supply range. An integrated D3 pressure reducing valve limits secondary pressure to 45 bar, safeguarding downstream components. A 1.0 mm throttle insert (B10) restricts pilot flow to smooth spool movement and prevent pressure shocks. The ISO 4401-07-07-0-05 porting pattern enables bolt-on installation to common subplates. Four M10 × 60 mounting screws hold the body in place, and each must be tightened to 58 Nm to maintain sealing under load. These mechanical and hydraulic details work together to provide accurate, repeatable directional control for automated machinery.
Technical Specifications
Cleanliness Class
ISO 4406 (c) 20/18/15
D3 Secondary Pressure
45 bar
Electrical Connection
DIN EN 175301-803 (K4)
Manual Override
Concealed (N9)
Max Flow (symbol Y, 280 Bar)
250 l/min
Max Operating Pressure (p, A, B)
280 bar
Max Pilot Pressure
250 bar
Min Pilot Pressure (2-spool Spring End)
14 bar
Mounting Screws
M10 x 60 (4 pcs)
Nominal Size (ng)
16
Pilot Oil Return
Internal (ET)
Pilot Oil Supply
Internal (ET)
Porting Pattern
ISO 4401-07-07-0-05
Pressure Reducing Valve
D3
Screw Tightening Torque
58 Nm
Throttle Insert
Ø 1.0 mm (B10)
1620 Old Apex Road
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