Bosch Rexroth | 4WRZE10W8-85-7X6EG24N9ETK31F1D3V
4WRZE10W8-85-7X/6EG24N9ETK31/F1D3V
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The 4WRZE10W8-85-7X/6EG24N9ETK31/F1D3V proportional directional valve is produced by Bosch Rexroth within the WRZ Proportional Directional Valves series and regulates hydraulic actuators in automation systems by adjusting flow in response to an electrical command. Size 10 mounting conforms to NG10 cavities so that the valve can replace standard subplate units, while the W8 spool profile sets the metering edges and governs how fluid shifts between ports. A nominal flow of 85 l/min at a differential pressure of 10 bar allows medium-capacity circuits to move oil efficiently, and the main stage tolerates operating pressures up to 315 bar for use in high-pressure lines. A current-input command interface designated F1 converts amplifier output into spool position, integrated electronics run from a 24 V DC supply, and maximum hysteresis is limited to 6 %, maintaining repeatable positioning.
Internal pilot supply and drain, coded ET, eliminate external pilot hoses and simplify manifold layouts, and the return port T withstands an internal pressure of 30 bar so backpressure in tank lines does not disturb valve behavior. Electrical connection is made with a DIN EN 175201-804 K31 plug, providing standardized wiring for power and control signals, while a concealed manual override identified as N9 lets technicians shift the spool mechanically during commissioning or power loss. Mineral oil of the HL or HLP classes serves as the recommended hydraulic fluid, and FKM seals protect against fluid degradation at higher temperatures. Acceptable contamination limits are ISO 4406 classes 20/18/15 for the main stage and 18/16/13 for the pilot stage, which preserves spool clearances. The valve weighs 8.0 kg, enabling single-person installation without lifting aids.
Technical Specifications
Cleanliness Class Main
20/18/15 (ISO 4406)
Cleanliness Class Pilot
18/16/13 (ISO 4406)
Command Interface
F1 (Current Input)
Electrical Connection
DIN EN 175201-804 (K31)
Hydraulic Fluid
Mineral Oil (HL, HLP)
Hysteresis (max)
6%
Manual Override
Concealed (N9)
Max Operating Pressure (main)
315 bar
Nominal Flow
85 l/min (Δp 10 bar)
Pilot Supply/drain
Internal (ET)
Return Port T Pressure (internal)
30 bar
Seals
FKM (V)
Size
10 (NG10)
Spool Type
W8
Supply Voltage
24 V DC
Weight
8.0 kg
1620 Old Apex Road
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