Rexroth DRE DREM DRE10 Proportional Pressure Reducing Valve | DRE-10-52/100YG24K4M

The Rexroth DRE & DREM Series from LIC Hydraulic are high-performance Pilot-Operated Proportional Pressure Reducing Valves. Designed to reduce a high primary pressure to a lower, constant secondary pressure that is directly proportional to the electrical input signal. Models like the DRE-10-52/100YG24K4M provide the flexibility and precision required for modern automated hydraulic systems. We provide 100% drop-in replacements, ensuring total compatibility with original Bosch Rexroth mounting patterns (ISO 4401) and electrical control logic.

Technical Highlights

• Series: DRE (Standard), DREM (Integrated Electronics/OBE).

• Frame Sizes: 10 (Size 10) and 25 (Size 25).

• Max Operating Pressure: Up to $315\text{ bar}$ ($4565\text{ psi}$).

• Voltage: Standard 24V DC Proportional Solenoid.

Core Advantages

• Precision Pressure Regulation: The DRE10 series maintains an exceptionally stable secondary pressure even during significant primary pressure fluctuations or varying flow rates.

• Integrated Electronics (DREM/DREME): Models with Integrated Electronics (OBE) minimize wiring complexity and reduce electromagnetic interference (EMI), providing a “plug-and-play” solution for system integrators.

• Rapid Dynamic Response: Optimized pilot stages allow the valve to react quickly to signal changes, making it ideal for high-cycle-rate applications where timing is critical.

• Modular Flexibility: Available with various pilot oil supply and drain configurations (internal or external), allowing for seamless integration into diverse hydraulic circuit architectures.

Expert Maintenance Tips

• Amplifier Tuning: If using the standard DRE (without OBE), ensure your external amplifier’s dither frequency is set correctly. Proper dither reduces static friction and hysteresis, significantly improving control precision.

• Pilot Oil Cleanliness: Because this valve relies on a sensitive pilot stage, maintain system oil cleanliness at ISO 18/16/13. A clogged pilot orifice is the leading cause of “pressure drift” or failure to shift.

• External Drain (Y Port): For stable pressure control, ensure the external drain line (Port Y) is connected directly to the tank with zero back-pressure. Excessive back-pressure in the drain line will directly offset the regulated secondary pressure.