Product Overview
The DRE 10-5X/315YMG24K4M (Material No. R900916196) is a pilot-operated proportional pressure reducing valve from Bosch Rexroth’s DRE series. DRE-type valves are pilot-operated proportional pressure reducing valves used to reduce system pressure (port P) to an electronically settable secondary pressure (port A), while also providing pressure limitation from port A to port T. The valve is actuated by a proportional solenoid, with outlet pressure proportional to the electrical input signal.
The DRE 10-5X/315YMG24K4M is rated at NG10 with subplate mounting, conforming to DIN 24340-A and ISO 4401 mounting interfaces. It belongs to the 5X component series (50–59 series, installation and connection dimensions unchanged). Maximum operating pressure is 315 bar with a maximum flow of 300 L/min.
DRE series valves basically consist of a pilot control valve (with proportional solenoid), a main valve (with main spool insert), and an optional integrated check valve. The valve requires an external proportional amplifier for control (e.g., VT-MSPA1, VT-VSPA1, or VT-VSPD series).
As a direct OEM-replacement solution, this valve maintains 100% mechanical and functional interchangeability with the original Rexroth unit. Every valve undergoes rigorous simulation testing—including pressure cycling, thermal variation, and full-stroke endurance validation—to guarantee factory-grade performance. Ideal for industrial hydraulic systems requiring electronic remote pressure setting and dynamic pressure regulation.
Technical Specifications
Model: DRE 10-5X/315YMG24K4M
Material Number: R900916196
Brand: Bosch Rexroth
Valve Type: Pilot-operated proportional pressure reducing valve
Nominal Size: NG10
Mounting Type: Subplate mounting
Mounting Interface: DIN 24340-A and ISO 4401
Component Series: 5X (50–59 series)
Max. Operating Pressure: 315 bar
Max. Flow: 300 L/min
Pressure Adjustment Range: 315 bar (“315Y” code indicates max 315 bar set pressure)
Control Type: Proportional solenoid
Supply Voltage: 24 V DC
Electrical Connection: Requires external amplifier
Seal Material: NBR (M code)
Body Material: Cast steel
Compatible Fluids: Mineral oil (HL, HLP) per DIN 51524
Weight: Approx. 4.7 kg
Solenoid Feature: Central thread and detachable coil
Key Technical Advantages
1. Pilot-Operated Proportional Control – Dynamic Remote Pressure Regulation
The DRE series integrates proportional solenoid control into a pilot-operated reducing valve, enabling electronic pressure setting via analog command signals. The command signal and outlet pressure feature a linear relationship. This design allows real-time pressure setpoint variation during machine cycles, making it ideal for dynamic pressure profiling applications such as injection pressure curve control and variable clamping force adjustment.
2. 3-Way Reducing Valve Design – Dual Pressure Reduction and Limiting Function
DRE valves are 3-way variants that not only reduce pressure from port P to port A but also provide pressure relief from port A to port T when pressure exceeds the setpoint. This design integrates both pressure reduction and pressure limitation functions within a single valve body, simplifying hydraulic circuit layout.
3. Central Thread Solenoid with Detachable Coil – Easy Maintenance
The proportional solenoid features a central thread and detachable coil. Coils can be replaced or rotated without opening the pressure-tight hydraulic chamber, greatly simplifying on-site maintenance and minimizing downtime.
4. Low Minimum Controllable Pressure – Wide Pressure Range
The DRE series offers a minimum adjustable pressure of approximately 2 bar at zero command signal. This characteristic provides significant advantages for applications requiring very low pressure settings. Pressure ratings cover 50/100/200/315 bar options.
5. Flexible External Amplifier Configuration – Compatible with Multiple Control Systems
DRE series valves require external proportional amplifiers, with options including analog amplifiers (VT-MSPA1, VT-VSPA1) or digital amplifiers (VT-VSPD). Users can flexibly select amplifier types based on system requirements, with independently adjustable ramp-up and ramp-down times.
6. Drop-In Interchangeability – Minimized Downtime and Retrofit Costs
The valve strictly adheres to Bosch Rexroth’s original mounting dimensions and functional specifications, with DIN 24340-A and ISO 4401 interface compliance. Whether for new system design or legacy system upgrades, this valve offers 100% mechanical and electrical interchangeability with the original Rexroth unit—eliminating the need for manifold modifications or piping changes, significantly reducing downtime and retrofit expenses.
Application Areas
Injection Molding Machinery – Programmable injection and hold pressure profile control
Clamping Circuits – Variable clamping force control for different workpiece materials
Hydraulic Presses – Variable die-cushion pressure during forming cycles
Test Equipment – Precise, remotely adjustable pressure setpoints
Pilot Pressure Control – Adjustable pilot supply for proportional valve systems
Force Control Systems – Closed-loop force control via pressure regulation
Metallurgical Equipment – Precision pressure control in rolling mill hydraulic systems
Expert Maintenance Tips
1. Fluid Cleanliness Management
DRE series pilot-operated proportional reducing valves feature extremely tight spool-to-sleeve clearances. Maintain system fluid cleanliness to ISO 4406 18/16/13 or better. Install filters with a minimum rating of 10μm upstream of the valve.
2. External Amplifier Matching
DRE series valves require external proportional amplifiers and cannot accept control signals directly. Verify that the selected amplifier (VT-MSPA1, VT-VSPA1, or VT-VSPD series) matches the valve’s electrical specifications prior to installation.
3. Electrical Connections and Supply Voltage
The valve operates on 24 V DC supply voltage. Verify that the supply voltage matches the system specifications prior to installation. Use shielded cables for signal transmission with reliable single-point grounding to effectively suppress electromagnetic interference.
4. Return Line Backpressure Control
Pilot-operated reducing valves are sensitive to return line backpressure. Ensure return line backpressure remains within allowable limits to prevent pressure setpoint drift or abnormal spool performance.
5. Installation and Sealing
Carefully review the Bosch Rexroth product documentation prior to installation. Ensure the mounting surface is flat and smooth, with DIN 24340-A and ISO 4401 interface compliance. Tighten mounting bolts evenly to specified torque. Take care not to damage or omit seals (NBR) during assembly. The solenoid coil is rotatable to accommodate different wiring orientations.
6. Commissioning and Parameter Configuration
During initial commissioning, test valve operation with low command signals first, then gradually increase to the required setpoint after confirming normal pressure response. Independently adjustable ramp-up and ramp-down times are available through the external amplifier. Minimum adjustable pressure at zero command signal is approximately 2 bar.
7. Periodic Inspection and Maintenance
Regularly verify the valve’s pressure-command signal characteristic curve. If increased hysteresis or reduced repeatability is detected, inspect the proportional solenoid condition and check for pilot spool sticking. For systems that have been idle for extended periods, perform thorough system circulation filtration before restart.
