FAQ: Rexroth Z3DREE10VP2-1X/315XLG24K31F1M

What is this valve?​

It is a pilot-operated proportional pressure reducing valve​ with integrated electronics (OBE). It reduces a higher inlet pressure (P2) to a precisely controlled lower outlet pressure (P1) based on an electrical command signal.

What are its key features?​

• Integrated Electronics (OBE):​ The amplifier is built into the solenoid, simplifying wiring and setup.

• High Pressure:​ Handles up to 350 bar inlet pressure and reduces it proportionally up to 315 bar.

• Sandwich Mounting:​ Designed for compact installation between a directional valve and subplate.

• High-Temp Seals:​ Equipped with FKM (Viton®) seals for use with phosphate ester fluids or in high-temperature environments.

How does it work?​

An electrical signal (0–10 V) controls the pilot solenoid. The higher the voltage, the higher the reduced outlet pressure (P1). If the signal is lost, the valve typically closes or returns to a minimal pressure.

Where is it typically used?​

Used in hydraulic systems requiring precise, variable pressure control, such as clamping circuits, press controls, or secondary circuit pressure regulation in industrial machinery.

How do I wire it?​

• Power:​ 24V DC to the coil connector.

• Signal:​ Connect the 0–10 V command signal to the designated pins on the integrated electronics connector.

• Drain:​ The external drain port (Y) must be connected directly to the tank with minimal backpressure.

What if the pressure is unstable or incorrect?​

• Check for contamination in the pilot orifice.

• Verify the 0–10 V signal is stable and not dropping.

• Ensure the inlet pressure (P2) is sufficiently higher than the desired reduced pressure (P1).

• Confirm the external drain line (Y) is not blocked and has low backpressure.