4WRZ25EB325-7X/6EG24N9K4/M

The 4WRZ25EB325-7X/6EG24N9K4/M proportional directional valve belongs to the WRZ Proportional Directional Valves series and is produced by Bosch Rexroth for hydraulic automation tasks. It meters flow and controls actuator direction in pressure lines up to 350 bar, making it suited to heavy-duty circuits. A nominal flow rate of 325 l/min at a 10 bar differential pressure keeps cylinders and motors supplied at high speed. The valve body accepts 25 mm ports so internal passages align with large line sizes. A standard ISO 4401-08-07-0-94 mounting pattern lets it drop onto common manifolds without re-machining. Electrical actuation is provided by a 24 V DC coil whose 4.8 Ω resistance draws a maximum of 1.5 A; this matches typical machine control power supplies. Continuous energization is possible because the coil is rated for a 100 % duty cycle, allowing the spool to hold position for extended periods. The assembled unit weighs 18.2 kg, a factor to consider when selecting mounting hardware.

For cabinet wiring the solenoid end is fitted with a DIN EN 175301-803 connector, and the enclosure is sealed to IP65 so the valve resists dust ingress and low-pressure water jets; this level of sealing maintains functionality in wash-down areas of industrial machines. A concealed manual override lets maintenance staff shift the spool mechanically when electrical power is absent. Thermal endurance is provided by a maximum coil temperature limit of 150 °C, permitting operation in warm oil or tight spaces. Drain management is flexible; the T port can handle 250 bar when an external drain is used, or 30 bar with an internal drain, letting designers match back-pressure limits to tank layouts. Pilot stages need only 7 l/min through the X and Y ports, reducing auxiliary pump demand and minimizing heat generation in the control circuit. These characteristics complete the functional profile of the valve and define how it interfaces with electrical controls and hydraulic return lines.