Rexroth DREBE6X Proportional Pressure Reducing Valve | 0811402080 | DREBE6X-1X/175

The Rexroth DREBE6X Series offered by LIC Hydraulic is a pilot-operated, 3-way proportional pressure reducing valve designed for high-precision hydraulic control. The specific model DREBE6X-1X/175MG24K31A1M (Part No. 0811402080) features Integrated Electronics (OBE), allowing the valve to process command signals directly. This eliminates the need for external rack-mounted amplifiers, reducing cabinet space and installation costs. With a pressure control range up to $175\text{ bar}$, it is the industry standard for applications requiring repeatable, dynamic pressure modulation.

Technical Specifications (Quick Reference)

• Nominal Size: Size 6 (NG6).

• Max Control Pressure: $175\text{ bar}$ ($2538\text{ PSI}$).

• Input Signal: $0\text{–}10\text{V}$ standard (A1 version).

• Supply Voltage: $24\text{V}$ DC (MG24).

• Part Number: 0811402080.

• Construction: 3-way design with pressure relief function for Port A.

Key Technical Advantages

• Plug-and-Play OBE: The on-board electronics are pre-calibrated at the factory, ensuring linear pressure curves and minimal hysteresis without manual tuning during commissioning.

• Pressure Stability: The 3-way function ensures that even if Port A is subjected to external force or load spikes, the valve can discharge excess pressure to Port T, maintaining a rock-steady target pressure.

• Low Hysteresis: Precision-manufactured spools and high-performance solenoids result in extremely low friction, providing smooth transitions between pressure levels.

• Rugged Design: Built to withstand industrial vibrations and temperature fluctuations, ensuring long-term reliability in harsh manufacturing environments.

Application Areas

• Plastic Machinery: Precision control for clamping and holding pressure.

• Machine Tools: Adjustable hydraulic clamping and counterbalance systems.

• Secondary Pressure Circuits: Ideal for systems where a branch circuit requires variable pressure lower than the main system pump.

• Material Handling: Smooth tension control in winding or braking systems.

Expert Maintenance Tips

• Filter Integrity: Always use a pressure line filter. Since the pilot stage has small orifices, even microscopic debris can cause the valve to “stick” at maximum or minimum pressure.

• Grounding: Proper grounding of the 7-pin connector shell is critical to avoid “signal drift” caused by electromagnetic interference (EMI) from nearby motors.

• Seal Inspection: Periodically check the static seals between the valve and the subplate. Hardened seals due to aged oil can lead to external leaks that affect the pilot pressure stability.