Bosch Rexroth | 4WRZ25W6-325-7X6EG24N9ETK4M
4WRZ25W6-325-7X/6EG24N9ETK4/M
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The 4WRZ25W6-325-7X/6EG24N9ETK4/M valve is produced by Bosch Rexroth within the WRZ Proportional Directional Valves series. It regulates hydraulic flow and direction in automated circuits where proportional control is required. The solenoid operates on a 24 V DC supply that enters through a DIN EN 175301-803 plug, while its coil shows a resistance of 4.8 Ω at 20 °C and can draw up to 1.5 A. With an internal pilot oil supply and an internal drain path, the unit simplifies manifold plumbing. The metering section passes 325 l/min at a 10 bar differential pressure and withstands system pressures up to 350 bar. A porting pattern of ISO 4401-08-07-0-94 supports direct mounting to standard subplates, and the assembly weighs 18.2 kg when installed that way.
Continuous duty is supported because the energizing circuit is rated for a 100 % duty cycle, and spool positioning repeatability is aided by hysteresis that does not exceed 6 %. Coil insulation tolerates temperatures up to 150 °C, permitting operation in warm power-unit enclosures. An IP65 enclosure rating protects the electrical interface against dust and low-pressure water jets. The return line can accommodate 30 bar when the drain remains internal, so back pressure in tank circuits is acceptable. Dynamic seals are manufactured from NBR to match common mineral oils and ensure reliable leakage control under the stated pressures.
Technical Specifications
Coil Resistance (20 °c)
4.8 Ω
Duty Cycle
100%
Electrical Connection
DIN EN 175301-803 Plug
Hysteresis
<= 6%
Max Coil Temperature
150 °C
Max Current
1.5 A
Max Operating Pressure
350 bar
Nominal Flow (10 Bar Dp)
325 l/min
Pilot Oil Drain
Internal
Pilot Oil Supply
Internal
Porting Pattern
ISO 4401-08-07-0-94
Protection Rating
IP65
Return Port T Pressure (int Drain)
30 bar
Seal Material
NBR
Supply Voltage
24 V DC
Weight (subplate Mounting)
18.2 kg
1620 Old Apex Road
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