4WRZE32W8-520-7X/6EG24N9K31/F1D3M

The 4WRZE32W8-520-7X/6EG24N9K31/F1D3M valve is produced by Bosch Rexroth in the 4WRE Proportional Directional Valves series. It modulates hydraulic flow and pressure to automate cylinder and motor circuits in large machinery. The unit is size 32, so its port envelope matches high-capacity manifolds in presses and plastics machines. A nominal flow rating of 520 l/min defines the baseline volume it can meter with 10 bar differential, while the 1600 l/min maximum flow covers peak demand without inducing excessive pressure loss. The spool symbol W8 identifies the metering notches used to shape flow gain for symmetrical motion control. Four ports allow connection to pressure, tank, and two actuator lines, and the three discrete spool positions provide extend, retract, and neutral states. Pilot-operated hydraulic actuation moves the main spool with a smaller control stage, enabling smooth shifts at up to 350 bar system pressure. Both pilot supply and pilot return are external, which lets designers select clean, conditioned lines for consistent pilot stability.

Subplate mounting is the chosen connection type, so the valve bolts onto a manifold rather than using line fittings, reducing installation time in modular power units. The port pattern follows ISO 4401-10-09-0-05, ensuring interchangeability with standard size-32 bases. Electrical actuation with on-board electronics converts a 24 VDC command into proportional pilot force, eliminating the need for separate amplifiers. A 7-pole connector with six signal contacts plus protective earth provides power, spool feedback, and command wiring, and the plug conforms to EN 175201-804 for compatibility with common mating cables. The integrated electronics maintain precise spool positioning, which stabilizes flow even when load pressures fluctuate. Because the valve control section is fed through the specified connector, technicians can preassemble harnesses to speed service work. Together, the electrical interface and standardized mounting features support rapid integration into press, marine, or test-rig manifolds while retaining the high-flow hydraulic performance outlined earlier.