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The 4WRZ25W6-325-7X/6EG24N9ETK4/D3V proportional directional valve belongs to the WRZ Proportional Directional Valves series and is built by Bosch Rexroth for precise control of actuator speed and direction in hydraulic automation. It employs spool type W6 to establish the flow metering curve required for servo-quality positioning. The solenoid operates on a supply of 24 V DC, and the coil has a resistance of 4.8 Ω at 20 °C, allowing predictable current rise. A maximum current of 1.5 A produces the rated magnetic force while the 100 % duty cycle permits continuous service without cool-down intervals. Thermal endurance reaches 150 °C at the coil so winding insulation remains secure under elevated oil temperatures. Electrical power is fed through a DIN EN 175301-803 plug that seals against contaminants, and the enclosure meets IP65 to withstand dust and water jets. A concealed manual override labeled N9 lets maintenance staff shift the spool directly, and a pilot valve size 6 keeps the envelope compatible with compact pilot blocks.
At system pressure the valve passes a nominal flow of 325 l/min with a 10 bar differential, making it suitable for large cylinder circuits. It tolerates a maximum operating pressure of 350 bar on the service ports, while the return line can accept up to 30 bar at port T to simplify back-pressure designs. The porting pattern follows ISO 4401-08-07-0-94 so it drops onto common subplates without modification. Both pilot supply and pilot drain are internal, eliminating external hoses and reducing leak points. A built-in D3 pressure reducing valve maintains a stable pilot pressure, preserving proportional accuracy even when mains pressure fluctuates. These hydraulic characteristics allow the valve to integrate into presses, plastic machines, and motion platforms where repeatable flow control and compact installation are required.
Coil Resistance (20 °c)
4.8 Ω
Duty Cycle
100%
Electrical Connection
DIN EN 175301-803 (plug)
Manual Override
Concealed (N9)
Max Coil Temperature
150 °C
Max Current
1.5 A
Max Return Pressure (port T)
30 bar
Maximum Operating Pressure
350 bar
Nominal Flow (at 10 Bar)
325 l/min
Pilot Supply/drain
Internal/Internal
Pilot Valve Size
6
Porting Pattern
ISO 4401-08-07-0-94
Pressure Reducing Valve
D3
Protection Type
IP65
Spool Type
W6
Supply Voltage
24 V DC
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