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The 4WRZ10W6-25-7X6EG24N9ETK4M valve is produced by Bosch Rexroth as part of the WRZ Proportional Directional Valves series and meters hydraulic flow for automated actuation. The W6 spool geometry establishes the required flow paths between the work ports, while a nominal flow of 25 l/min at a 10 bar differential pressure supports moderate actuator speeds. A proportional, detachable coil solenoid transforms a control signal into precise spool displacement and allows coil replacement without opening the hydraulic section. A 24 V DC supply voltage permits direct connection to industrial controllers, and the DIN EN 175301-803 plug offers a sealed electrical interface for quick installation. The concealed manual override enables local spool movement during commissioning without exposed levers, and a maximum operating pressure of 315 bar makes the unit suitable for high-pressure circuits. Fluid must meet cleanliness class 20/18/15 per ISO 4406 to protect the metering edges from wear.
The T port can withstand up to 30 bar with the internal drain path, so return line components must be selected accordingly. Internal pilot oil supply removes the need for external feed hoses, and internal pilot oil drain returns the pilot flow to tank within the housing to minimize plumbing complexity. Pilot stage flow changes from 0 to 3.5 l/min across the full command span, stabilizing spool positioning. Each a, b, p, t, and t1 port is machined to an 11 mm bore diameter, matching standard subplates, and the mounting face follows the ISO 4401-05-05-0-94 pattern for interchangeability. A 1.8 mm throttle insert can be installed to tune dynamic response, and the assembly weighs 7.8 kg, which dictates the strength of the supporting manifold or bracket.
Cleanliness Class (main Valve)
20/18/15 (ISO 4406)
Electrical Connection
DIN EN 175301-803 Plug
Manual Override
Concealed
Max Operating Pressure
315 bar
Max T-port Pressure (internal Drain)
30 bar
Nominal Flow (10 Bar Δp)
25 l/min
Pilot Oil Drain
Internal
Pilot Oil Flow (0→100% Step)
3.5 l/min
Pilot Oil Supply
Internal
Port Bore Diameter (a/b/p/t/t1)
11 mm
Porting Pattern
ISO 4401-05-05-0-94
Solenoid Type
Proportional, Detachable Coil
Spool Type
W6
Supply Voltage
24 V DC
Throttle Insert Diameter
1.8 mm
Weight
7.8 kg
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