EBG-03-H-5016 Yuken Proportional Relief Valve

Product Overview

The EBG-03-H-5016 supplied in the original product title corresponds to the YUKEN EBG-03-H proportional electro-hydraulic relief valve platform. YUKEN’s official documentation identifies EBG-03 as a proportional electro-hydraulic relief valve combining a compact proportional pilot relief stage with a specially developed low-noise main relief stage. System pressure is regulated in proportion to the input current.

For the verified EBG-03-H configuration, the official maximum operating pressure is 24.5 MPa, with a maximum flow capacity of 100 L/min. The H pressure range extends up to 24.5 MPa, making the valve suitable for high-pressure hydraulic circuits requiring electronically adjustable pressure rather than fixed mechanical pressure setting.

For replacement projects, the complete valve code should always be checked, including the pressure range, safety-valve configuration, pilot-valve configuration and design number. YUKEN’s documentation records a change from Design 50 to Design 51 for the EBG-03/06/10 series. The main specifications remain unchanged, while the input-current-to-pressure characteristics differ.

The EDG-01V-C-P19T17-51 is also a valid YUKEN EDG proportional pilot relief valve configuration. Available technical listings identify a 1.0–15.7 MPa adjustment range, with maximum operating pressure up to 24.5 MPa and maximum flow of 2 L/min.

Technical Specifications

EBG-03-H Verified Platform

• Manufacturer: YUKEN
• Series: E Series Proportional Electro-Hydraulic Relief Valve
• Verified standard model: EBG-03-H-51
• Original supplied model reference: EBG-03-H-5016
• Valve type: Proportional Electro-Hydraulic Relief Valve
• Mounting: Sub-plate mounting
• Valve size: 03
• Maximum operating pressure: 24.5 MPa
• Maximum flow: 100 L/min
• Minimum flow: 3 L/min
• Pressure adjustment range: H type, up to 24.5 MPa
• Rated current: 820 mA
• Coil resistance: 10 Ω
• Hysteresis: ≤3%
• Repeatability: ≤1%
• Approximate mass: 5.6 kg
• Mounting standard: ISO 6264-06-09-1-97
• Recommended power amplifiers: Applicable YUKEN amplifier models such as AME-D-10, AME-D2-1010-11 and AMN-D-10
• Mounting bolts: M12 × 40 L, 4 pieces
• Speed: Not applicable
• Displacement: Not applicable

YUKEN’s official catalogue provides the above core EBG-03-H ratings and specifications.

EDG-01V-C-P19T17-51

• Manufacturer: YUKEN
• Series: EDG-01V Proportional Electro-Hydraulic Pilot Relief Valve
• Model: EDG-01V-C-P19T17-51
• Control application: Vent control of relief valve
• Mounting: Sub-plate mounting
• Pressure adjustment range: 1.0–15.7 MPa
• Maximum operating pressure: 24.5 MPa
• Maximum flow: 2 L/min
• Valve type: Proportional pilot relief valve
• Design number: 51
• Speed: Not applicable
• Displacement: Not applicable

The exact EDG-01V-C-P19T17-51 model and its pressure range are supported by current product documentation, while its 24.5 MPa / 2 L/min class ratings are consistent with published EDG-01V specifications.

Key Technical Advantages

1. Two-Stage Proportional Pressure Control

The EBG-03 architecture combines a proportional pilot stage with a high-capacity main relief stage. This allows a relatively small electrical control signal to regulate hydraulic pressure across a main circuit capable of handling up to 100 L/min.

2. High-Pressure Electronic Adjustment

The H configuration provides pressure adjustment up to 24.5 MPa, making it suitable for hydraulic circuits where pressure must change according to machine cycle, process stage or electronic control commands.

3. Low-Noise Relief Architecture

YUKEN specifically describes the EBG series as combining the proportional pilot valve with a specially developed low-noise relief valve. This architecture is beneficial in industrial hydraulic systems where continuous operation and controlled pressure unloading are important.

4. Controlled Hysteresis and Repeatability

The published EBG-03 specifications indicate ≤3% hysteresis and ≤1% repeatability. Actual machine-level performance will still depend on the amplifier, hydraulic-fluid viscosity, back pressure, piping arrangement and control-loop design.

5. Standardized Sub-Plate Integration

The EBG-03 uses sub-plate mounting and an ISO 6264-06-09-1-97 mounting interface, supporting integration into industrial hydraulic manifolds and centralized valve assemblies.

6. Suitable for Replacement and Service Engineering

For retrofit applications, the most important identification factors are the complete model code, pressure range, Design Number, safety-valve configuration and pilot-valve type. This is particularly important because the EBG series transitioned from Design 50 to Design 51.

Application Areas

Typical applications include:

• Industrial hydraulic presses
• Injection molding machinery
• Metal forming and stamping equipment
• CNC hydraulic systems
• Hydraulic power units
• Automated production machinery
• Hydraulic test rigs
• High-pressure industrial process equipment
• Remote electronic pressure-control circuits

The EDG-01V-C-P19T17-51 is particularly relevant to pilot-stage pressure control, where a low-flow proportional pilot signal is used to control a larger hydraulic relief function.

Expert Maintenance Tips

Verify the Design Number Before Replacement

YUKEN documentation confirms the transition from Design 50 to Design 51. Do not approve a replacement solely because the valve is marked EBG-03-H; verify the complete code and electrical-pressure characteristics.

Maintain Hydraulic Cleanliness

Proportional pilot valves are sensitive to contamination. YUKEN’s proportional-control documentation recommends controlling fluid contamination and using filtration of 20 μm or finer to reduce the risk of unstable pressure regulation and internal sticking.

Keep Tank-Line Back Pressure Low

Tank and drain-line back pressure can directly affect minimum adjustment pressure. The hydraulic return and drain lines should therefore be routed directly to the reservoir whenever possible, with minimum unnecessary back pressure.

Observe Minimum Flow Requirements

YUKEN specifies a minimum EBG-03 flow of 3 L/min to avoid instability of the preset pressure. This should be considered during commissioning and when designing very-low-flow operating conditions.

Verify C/H Pilot Compatibility

The EDG-01V-C-P19T17-51 is associated with a 1.0–15.7 MPa pressure adjustment range, while the EBG-03-H is the high-pressure configuration up to 24.5 MPa. These configurations should not be substituted without checking the complete hydraulic and electrical specification.