Product Overview

The DREME 10-5X/50YMG24K31V is a Bosch Rexroth pilot-operated proportional pressure reducing valve with integrated electronics (OBE).

The verified Rexroth material number is:

R901007766

and the corresponding model is:

DREME 10-5X/50YMG24K31V.

This is an important correction to the original product title: the DREME is a proportional pressure reducing valve, not a hydraulic directional control valve.

The valve uses electrical proportional control to regulate pressure in the hydraulic circuit. Its Y configuration specifies an externally routed, separate and depressurized pilot-oil return to tank. The G24 code identifies a 24 VDC supply, K31 specifies the electrical connection, and V identifies FKM seals.

For OEM replacement applications, accurate matching requires more than dimensional compatibility. The pressure range, pilot return configuration, electronics, electrical interface, seal material and mounting interface should all be verified.

Our replacement solutions emphasize in-situ interchangeability and 100% simulated operating-condition testing.

Technical Specifications (Bulleted List)

• Manufacturer: Bosch Rexroth
• Product Series: DREME
• Full Model: DREME 10-5X/50YMG24K31V
• Material Number: R901007766
• Product Type: Pilot-operated proportional pressure reducing valve
• Electronics: Integrated electronics (OBE)
• Size: 10
• Component Series: 5X
• Pressure Rating: 50 bar
• Electrical Supply: 24 VDC
• Electrical Connection: K31
• Pilot Oil Return: External, separate and depressurized to tank
• A/B Check Valve: Not included in the M configuration
• Seal Material: FKM
• Mounting: Subplate mounting
• Displacement: Not applicable
• Maximum Rotational Speed: Not applicable
• Control Principle: Electrical proportional pressure control with integrated electronics
• Hydraulic Fluid Compatibility: HL, HLP, HLPD, HVLP, HVLPD and HFC are listed for the DREME family; final compatibility depends on application conditions.

Flow Specification

Rexroth DREME/DREM Size 10 platform data indicate a maximum flow capability of up to 300 L/min for the relevant product family. However, the actual allowable flow for the complete DREME 10-5X/50YMG24K31V configuration must be verified from the manufacturer’s pressure-flow characteristic.

Therefore, a single universal flow figure should not be published for this exact ordering code without the corresponding characteristic curve.

Key Technical Advantages

1. Pilot-Operated Proportional Pressure Control

The DREME uses a pilot-operated proportional architecture rather than a basic direct-acting pressure valve.

This structure is designed for controlled and continuous pressure adjustment and is suitable for industrial hydraulic systems requiring electrical pressure commands.

2. Integrated OBE Electronics

The E designation identifies the integrated-electronics configuration.

Rexroth distinguishes DREME from DRE versions with external control electronics, providing a more integrated hydraulic/electronic package.

3. 50 bar Pressure Class

The /50 designation identifies the 50 bar pressure-rating version.

This makes the configuration appropriate for hydraulic circuits where a relatively low regulated pressure range is required.

4. External and Separate Pilot Return

The Y version uses an external, separate and depressurized pilot-oil return to tank.

Correct routing of this return circuit is essential for maintaining stable pilot control.

5. FKM Sealing Configuration

The final V identifies FKM seals.

This provides a different temperature and fluid-compatibility profile from NBR and can be advantageous in demanding industrial environments, subject to actual fluid and temperature compatibility.

6. Optional Mechanical Overpressure Protection

Rexroth specifies that a spring-loaded maximum pressure limitation can be used to protect the hydraulic system from excessive pressure caused by an abnormal pilot-valve condition, such as contamination or excessive electrical control current.

Application Areas

Typical applications include:

• Industrial hydraulic power units
• Hydraulic clamping systems
• Pressure-control circuits
• Machine tools
• Automated production machinery
• Forming and processing equipment
• Hydraulic testing systems
• PLC-controlled pressure circuits
• Industrial pressure-management systems
• Hydraulic systems requiring proportional pressure adjustment

The primary application function is pressure control and pressure reduction, rather than directional flow switching.

Expert Maintenance Tips

1. Keep the Y Return Circuit Free of Back Pressure

The Y configuration requires an external, separate and depressurized return to tank. Restricted return piping can disturb pilot operation and affect pressure regulation.

2. Verify the 24 VDC Supply

The G24 configuration requires a 24 VDC supply. During troubleshooting, check supply voltage, voltage drop, connector condition and control wiring before opening the hydraulic valve.

3. Match DREME With the Correct Electronic Configuration

DRE, DREM and DREME are not simply interchangeable names within the Rexroth DRE family.

DREME specifically identifies the integrated-electronics configuration.

4. Match the Pressure Rating

Do not substitute a 100, 200 or 315 bar pressure-rating version simply because the valve is also Size 10.

The pressure-rating code is a functional selection parameter and should match the required regulated-pressure range.

5. Check Hydraulic Cleanliness Before Valve Replacement

Pressure instability, slow adjustment or poor pressure holding may be caused by contaminated hydraulic fluid, restricted pilot circuits or filtration problems.

These conditions should be checked before replacing precision valve components.

6. Perform Functional Testing After Replacement

A replacement valve should be tested through the complete control chain:

24 VDC supply → electrical command → regulated pressure → actual pressure → steady-state holding → dynamic response

Our replacement process uses 100% simulated operating-condition testing to verify pressure regulation, electrical operation, leakage performance and functional interchangeability.