DBEME20-7X/315YG24K31A1M Rexroth Proportional Valve

Product Overview

The DBEME 20-7X/315YG24K31A1M is a Bosch Rexroth pilot-operated proportional pressure relief valve with integrated on-board electronics (OBE). It is designed for continuously adjustable hydraulic pressure limitation according to an electrical command value.

The valve belongs to the Size 25 / DBEME 20, 7X series, with a 315 bar pressure rating, 350 bar maximum operating pressure and 550 L/min maximum flow. The Y configuration provides external pilot oil return, G24 specifies a 24 V DC supply, K31 defines the 7-pin electrical connection, and A1 provides a 0–10 V command input with a 0–10 V actual-value output.

Technically, DBEME should be classified as a proportional pressure relief/pressure limiting valve, not as a conventional proportional pressure-reducing valve. The proportional pilot stage controls the main spool so that system pressure at port P can be adjusted continuously according to the electrical command value. An additional maximum-pressure limitation is incorporated as hydraulic protection against excessive pressure in the event of pilot-valve malfunction.

The corresponding Bosch Rexroth material number for DBEME 20-7X/315YG24K31A1M is R901353070. The smaller DBEME 10-7X/315YG24K31A1M is identified by material number R901344448.

For replacement applications, the complete type code should be verified rather than selecting a valve based only on the DBEME series designation. Our replacement process can be matched to the original mounting interface, pressure class, pilot-return configuration and electrical control requirements, followed by 100% simulated operating-condition testing.

Technical Specifications

DBEME 20-7X/315YG24K31A1M

• Manufacturer: Bosch Rexroth
• Series: DBEME
• Complete model: DBEME 20-7X/315YG24K31A1M
• Material Number: R901353070
• Valve type: Pilot-operated proportional pressure relief valve
• Electronics: Integrated On-Board Electronics (OBE)
• Valve size: Size 25
• Component series: 7X
• Pressure rating: 315 bar
• Maximum operating pressure, P/X: 350 bar
• Maximum pressure at T: 315 bar
• Pilot return: External, port Y
• Maximum flow: 550 L/min
• Maximum set pressure: 315 bar
• Maximum pressure limitation setting: 350 bar
• Pilot flow: Approximately 0.4–1.5 L/min
• Supply voltage: 24 V DC
• Electrical connection: K31, 7-pin connector (6 + PE)
• Command value: 0–10 V
• Actual-value output: 0–10 V
• Recommended viscosity: 30–46 mm²/s
• Maximum permissible viscosity: 15–380 mm²/s
• Hydraulic-fluid temperature: −20 to +80 °C
• Maximum contamination level: ISO 4406 Class 20/18/15
• Mounting: Subplate mounting
• Porting: ISO 6264
• Approximate weight: 5.5 kg
• Displacement: Not applicable
• Rotational speed: Not applicable

DBEME 10-7X/315YG24K31A1M

• Manufacturer: Bosch Rexroth
• Series: DBEME
• Complete model: DBEME 10-7X/315YG24K31A1M
• Material Number: R901344448
• Valve type: Pilot-operated proportional pressure relief valve
• Valve size: Size 10
• Component series: 7X
• Pressure rating: 315 bar
• Maximum operating pressure: 350 bar
• Maximum flow: 275 L/min
• Pilot return: External, port Y
• Supply voltage: 24 V DC
• Electrical connection: K31
• Command interface: A1, 0–10 V command / 0–10 V actual value
• Integrated electronics: OBE
• Approximate weight: 4.7 kg
• Displacement: Not applicable
• Rotational speed: Not applicable

Key Technical Advantages

1. Continuous Electronic Pressure Adjustment

The integrated proportional electronics and solenoid enable continuous pressure adjustment according to the electrical command value. This is well suited to automated hydraulic systems where different process stages require different pressure settings. Bosch Rexroth specifies factory adjustment of the command-value pressure characteristic to reduce manufacturing tolerance.

2. High Flow Capability

The DBEME 20 / Size 25 configuration supports a maximum flow of 550 L/min. Its pilot-operated architecture separates the low-flow proportional control function from the high-flow main-stage function, making the design suitable for large industrial hydraulic circuits.

3. 315-Bar Pressure Class

For the DBEME 20-7X/315 configuration:

• 315 bar: maximum set-pressure class
• 350 bar: maximum operating pressure at P/X
• 350 bar: maximum pressure limitation setting for the 315-bar pressure rating

These values must be distinguished during system design and commissioning.

4. Integrated OBE Electronics

With the A1 configuration, the valve accepts a 0–10 V command signal and provides a 0–10 V actual-value output. This simplifies integration with PLC-based analog control systems and supports monitoring of the commanded pressure-control process.

5. External Pilot Oil Return

The Y suffix specifies external pilot oil return. Keeping the pilot return path separately connected to the tank with low back pressure helps maintain predictable proportional pressure behavior.

6. Integrated Maximum Pressure Limitation

A separate spring-loaded relief function protects the hydraulic system against inadmissible pressure in the event of proportional pilot malfunction, contamination or excessive control current. For the 315-bar pressure class, the maximum pressure limitation can be set to 350 bar.

7. Defined Dynamic Response

The 7X technical documentation specifies an approximate step response of 100 ms for both 10–90% and 90–10% transitions under the documented test conditions. Actual machine-level response depends on hydraulic volume, piping and circuit dynamics.

8. Standardized Mounting

DBEME valves use ISO 6264-based mounting interfaces and are available in multiple valve sizes. This standardized architecture makes them suitable for industrial manifold systems, hydraulic power units and engineered replacement applications.

Application Areas

The DBEME 20-7X/315YG24K31A1M is suitable for:

• Large hydraulic presses
• Metal-forming machinery
• Forging equipment
• Steel and metallurgical hydraulic systems
• Large injection and molding machinery
• Industrial hydraulic power units
• High-flow hydraulic pump stations
• Hydraulic test systems
• Automated pressure-control systems
• Large clamping and holding circuits

The DBEME 10-7X/315YG24K31A1M is better suited to medium/high-flow applications such as:

• Medium-sized hydraulic power units
• Machine-tool hydraulics
• Industrial forming equipment
• Automated hydraulic machinery
• Medium hydraulic presses
• High-pressure pump stations
• Precision proportional pressure-control circuits

Expert Maintenance Tips

1. Keep the Y-Port at Low Back Pressure

The Y suffix specifies external pilot oil return. The Y line should be routed separately to the tank wherever possible and should not be connected to a high-back-pressure return circuit, as pilot-return pressure can affect proportional pressure control.

2. Verify the 0–10 V Signal

A1 versions depend on a stable 0–10 V command signal. When pressure does not correspond to the controller command, check the 24 VDC supply, input voltage, grounding, K31 connector, actual-value output and PLC analog module before modifying any hydraulic adjustment.

3. Maintain Hydraulic Cleanliness

The documented maximum contamination level is ISO 4406 Class 20/18/15. Contamination in pilot passages and throttling points can cause pressure drift, unstable regulation and slow dynamic response.

4. Control Fluid Viscosity

Bosch Rexroth specifies 30–46 mm²/s as the recommended viscosity range and 15–380 mm²/s as the maximum permissible range. Large viscosity changes during cold starts or high-temperature operation can affect pressure response.

5. Do Not Confuse 315 bar with 350 bar

For the /315 configuration, 315 bar is the maximum pressure-setting class, while 350 bar is the maximum operating pressure at P/X and the documented maximum pressure-limitation setting.

6. Verify A1 Versus F1

The electronic interface must match the original machine:

• A1: 0–10 V command / 0–10 V actual value
• F1: 4–20 mA command / 4–20 mA actual value

These versions should not be treated as electrically interchangeable without control-system verification.

7. Verify the Complete Ordering Code

For a replacement, confirm:

DBEME 20 + 7X + 315 + Y + G24 + K31 + A1 + M

Every suffix contributes to the hydraulic, electrical or sealing configuration. The DBEME 20-7X/315YG24K31A1M should therefore be replaced based on the complete type code and, where applicable, Material Number R901353070, rather than only the “DBEME 20” designation.

Engineering Replacement Assurance

For aftermarket replacement, the objective should be in-place interchangeability, not merely dimensional similarity. The replacement unit can be matched to the original mounting interface, pressure class, pilot-return arrangement and electronic control interface, then subjected to 100% simulated operating-condition testing covering pressure characteristic, command response, leakage, OBE function and stability before shipment.