DBE6-1X/50YG24K4V DBE10-30/3 15Y DBE6-11/200G24K4M Rexroth Proportional Relief Valve 350 bar

Product Overview

The DBE/DBET/DBETE/DREME series proportional pressure relief valves are electro-hydraulic proportional pressure control valves engineered by Bosch Rexroth for industrial hydraulic systems, widely used for stepless system pressure regulation, system unloading, and safety protection. These valves utilize proportional solenoids to convert electrical command signals into continuous, proportional system pressure changes, delivering high-precision, infinitely adjustable pressure control.

This product range covers the following series and models:

• DBE Series: Pilot-operated proportional pressure relief valves, including DBE10-30/3 15Y, DBE6-11/200G24K4M (R900774263), and DBE6-1X/50YG24K4V

• DBET/DBETE Series: Direct-operated proportional pressure relief valves, NG6, with or without integrated electronics (OBE/OBED)

• DREME Series: Pilot-operated proportional pressure reducing valves

The DBE series features a pilot-operated poppet design, using a proportional solenoid to drive the pilot stage, which in turn controls the main spool for high-flow, high-pressure proportional control. The DBET/DBETE series features a direct-operated seat valve design, suitable for low-flow, high-precision remote pressure control applications.

Our complete range of Rexroth proportional relief valves strictly adheres to OEM technical standards, achieving 100% direct interchangeability with original components. Every unit undergoes 100% simulated operating condition bench testing prior to shipment, ensuring performance parameters are fully consistent with genuine Rexroth products. Direct replacement significantly reduces equipment downtime and maintenance costs.

⚠️ Brand and Model Attribution Note:

• DBE10-30/3 15Y, DBE6-11/200G24K4M (R900774263), and DBE6-1X/50YG24K4V belong to the Bosch Rexroth DBE series pilot-operated proportional relief valves

• DBET and DBETE belong to the Bosch Rexroth DBET/DBETE series direct-operated proportional relief valves (NG6)

• DREME belongs to the Bosch Rexroth DREME series pilot-operated proportional pressure reducing valves

⚠️ Model Code Decoding (using DBE6-1X/50YG24K4V as example) :

• DBE = Pilot-operated proportional pressure relief valve

• 6 = Nominal size NG6

• 1X = Component series (10–19 series share identical mounting dimensions)

• 50 = Pressure rating (50 bar)

• Y = Pilot oil drain (Y = external drain)

• G24 = Supply voltage (DC24V)

• K4 = Electrical connection (DIN 43650 connector)

• V = Seal material (V = FPM)

Model Code Decoding (using DBE10-30/3 15Y as example) :

• DBE = Pilot-operated proportional pressure relief valve

• 10 = Nominal size NG10

• 30 = Design series/pressure rating code

• /3 = Component series

• 15Y = Set pressure (15 bar) + Y-type external drain

Technical Specifications 

DBE6 Series (Pilot-Operated Proportional Relief Valve)

• Product Series: Bosch Rexroth DBE series pilot-operated proportional pressure relief valve

• Model Examples: DBE6-1X/50YG24K4V (R900774263), DBE6-11/200G24K4M

• Brand: Rexroth

• Product Type: Pilot-operated proportional pressure relief valve

• Nominal Size: NG6 (Size 6)

• Component Series: 1X / 2X

• Mounting Interface Standard: ISO 4401 / DIN 24340 Form A

• Maximum Operating Pressure: 315 – 350 bar

• Maximum Flow Rate: 30 – 40 L/min

• Pressure Stage Options: 50, 100, 200, 315, 350 bar

• Proportional Solenoid: DC24V

• Electrical Connection: DIN 43650 connector (K4 type)

• Pilot Oil Drain: Y-type external / internal

• Seal Material: NBR (standard) / FPM/Viton (V-type)

• Mounting Type: Subplate mounting

• Response Time: Approx. 80 ms

• Control Accuracy: ≤1.5%

• Compatible Hydraulic Fluids: Mineral-based hydraulic oils per DIN 51524

DBE10 Series (Pilot-Operated Proportional Relief Valve)

• Product Series: Bosch Rexroth DBE series pilot-operated proportional pressure relief valve

• Model Example: DBE10-30/3 15Y

• Brand: Rexroth

• Product Type: Pilot-operated proportional pressure relief valve

• Nominal Size: NG10 (Size 10)

• Component Series: 3X

• Mounting Interface Standard: ISO 5781-AG-06-2-A

• Maximum Operating Pressure: 350 bar

• Maximum Flow Rate: 400 L/min (configuration dependent)

• Pilot Oil Flow: 0.5 – 1.8 L/min

• Pilot Oil Drain: Y-type external

• Control Type: Proportional solenoid, 0–10V / 4–20mA command signal

DBET/DBETE Series (Direct-Operated Proportional Relief Valve)

• Product Series: Bosch Rexroth DBET/DBETE series direct-operated proportional pressure relief valve

• Brand: Rexroth

• Product Type: Direct-operated proportional pressure relief valve

• Nominal Size: NG6

• Component Series: 6X / 7X

• Mounting Interface Standard: ISO 4401-03-02-0-05

• Maximum Operating Pressure: 420 – 500 bar

• Maximum Flow Rate: 2 – 5 L/min

• Proportional Solenoid: DC24V

• Electrical Connection: DIN EN 175301-803 / M12

• Control Type: External controller or integrated digital electronics (OBED)

• Interface Options: IO-Link / Bluetooth / Analog

• Seal Material: NBR / FPM (V-type)

DREME Series (Pilot-Operated Proportional Pressure Reducing Valve)

• Product Series: Bosch Rexroth DREME series pilot-operated proportional pressure reducing valve

• Brand: Rexroth

• Product Type: Pilot-operated proportional pressure reducing valve

• Nominal Size: NG6 to NG32

• Component Series: 1X

• Maximum Operating Pressure: 350 bar

Key Technical Advantages

1. Proportional Solenoid Actuation for Stepless Pressure Regulation

The DBE/DBET/DREME series all utilize proportional solenoids as electro-mechanical transducers. By applying current or voltage command signals (0–10V / 4–20mA), the proportional solenoid generates an electromagnetic force proportional to the command signal, driving the spool/pilot stage to produce system pressure proportional to the command. Compared to conventional on/off solenoid valves, proportional control delivers stepless continuous pressure regulation, significantly enhancing system control flexibility and precision.

2. Dual Technology Paths – Pilot-Operated and Direct-Operated – Covering Full Flow Range

Rexroth proportional relief valves offer two technology paths: pilot-operated (DBE series) and direct-operated (DBET/DBETE series) :

• DBE Pilot-Operated: Suitable for high-flow (NG10 up to 400 L/min) and high-pressure (350 bar) applications, using a pilot stage to control the main spool for precise proportional pressure regulation at high flow rates

• DBET Direct-Operated: Suitable for low-flow (2–5 L/min) and ultra-high-pressure (420–500 bar) remote pilot control applications, with faster response and simpler construction

3. Ultra-High Pressure Ratings for the Most Demanding Applications

The DBET/DBETE direct-operated series supports maximum operating pressures up to 500 bar. The DBE series supports maximum operating pressures up to 350 bar. These pressure ratings position Rexroth proportional relief valves among the highest-rated proportional valves available, particularly suitable for ultra-high-pressure hydraulic systems, heavy machinery, and extreme-duty applications.

4. Modular Design with Integrated Electronics (OBE/OBED)

DBETE/DBETA series are optionally available with integrated digital electronics (OBED) for plug-and-play installation. Integrated electronics support IO-Link communication and Bluetooth wireless configuration, enabling parameter setting and fault diagnosis via smartphone App. Pressure sensors are available for internal or external mounting, with pressure settings flexibly adjustable for various applications.

5. Linear Pressure/Command Characteristic Curve with High Control Accuracy

Rexroth proportional relief valves feature excellent linear pressure/command characteristic curves. Control accuracy ≤1.5% ensures precise, repeatable pressure control across the entire command signal range. Low hysteresis design guarantees stable and consistent pressure control performance.

6. 100% Direct Interchangeability with Standardized Mounting Interfaces

DBE6 series conform to ISO 4401 / DIN 24340 Form A standard mounting interfaces; DBE10 series conform to ISO 5781-AG-06-2-A; DBET series conform to ISO 4401-03-02-0-05. All models strictly adhere to Rexroth original mounting dimensions and interface standards, enabling 100% direct interchangeability without manifold modification or system adjustment. Every unit undergoes 100% simulated operating condition bench testing prior to shipment, ensuring consistent, stable performance at rated pressure and flow.

Application Areas

• Hydraulic System Proportional Pressure Control: Stepless pressure regulation for hydraulic power units and stations

• Injection Molding Machinery: Proportional pressure control and multi-stage pressure switching for injection molding and die-casting machines

• Construction Machinery: Proportional pressure regulation for excavators and wheel loaders

• Presses and Compactors: Multi-stage pressure control and precision pressure limiting

• DBET Series: Remote pilot control valves for piloting main relief valves in remote proportional pressure control applications

• Test Equipment: Precision pressure control and simulation for hydraulic test benches

• Wind Power: Proportional pressure control for wind turbine hydraulic systems

Expert Maintenance Tips

1. Verify Model and System Compatibility Prior to Installation

The DBE/DBET/DREME series offer multiple sizes (NG6/NG10/NG32), pressure ratings (50–500 bar), and mounting types. Confirm prior to installation:

• Size meets system flow requirements (DBE6=30–40 L/min, DBE10=400 L/min, DBET=2–5 L/min)

• Pressure rating covers system operating pressure

• Mounting interface standard matches the manifold (ISO 4401 / DIN 24340 / ISO 5781)

2. Electrical Connection and Command Signals

• DBE/DBET series proportional solenoids require DC24V power supply

• Command signals are typically 0–10V or 4–20mA

• Verify controller output signal type matches valve specifications prior to wiring

• Models with integrated electronics (OBED) – DBETE/DBETA – support IO-Link and Bluetooth communication

3. Pilot Oil Drain Configuration

DBE series offers internal drain and external drain (Y-type) pilot oil drain options. Y-type external drain prevents pilot drain back pressure from affecting set pressure accuracy—recommended for systems with significant tank back pressure.

4. System Cleanliness Management

Proportional valves feature precision internal clearances and demand high oil cleanliness. Recommended system cleanliness: ISO 4406 Code 18/16/13 or higher. Install high-precision filters (filtration rating ≤10μm) in the system return line and inspect filter elements regularly.

5. Pressure Setting and Commissioning

• For external controller models, pressure set point is determined by the controller output command signal

• During commissioning, start from low command signal and gradually increase, monitoring system pressure response for smooth operation

• Models with integrated electronics (OBED) can be configured and debugged via Bluetooth App

• For optimal repeatability, select a spring range where the target set point falls in the mid-to-high range of the spring’s capabilities

6. Periodic Functional Checks and Calibration

Perform functional checks every 2,000 operating hours or annually: verify linearity between command signal and output pressure, response time testing, and leakage inspection. If reduced control accuracy, sluggish response, or abnormal leakage is observed, arrange for servicing or replacement.