DRE30-30B hydraulic control valve
2 month ago
Product details
Detailed Analysis of DRE30-30B Hydraulic Control Valve
Model Definition and Classification
• Base Model: The DRE30-30B is classified as apilot-operated proportional pressure reducing valve, serving as a core component in hydraulic systems for precise pressure regulation.
• Series Expansion: The series includes models such as DRE10, DRE20, DRE30, etc., with bore diameters covering 10mm, 20mm, and 30mm. Pressure ratings range from 50 bar to 315 bar, and maximum flow capacity reaches 300 L/min.
Technical Parameters and Characteristics
• Operating Pressure Range: 50 bar (DRE30-50YM) to 315 bar (DRE30-315YM), depending on suffixes (e.g., 100YM, 200YM, 315YM).
• Flow Characteristics: Maximum flow of 300 L/min, linear pressure-flow curve, short response time (100–300ms), suitable for dynamic pressure control.
• Structural Features:
• Pilot-Operated Design: Proportional solenoids drive the pilot valve to control main spool displacement for stepless pressure adjustment.
• Integrated Amplifier: Optional VT-2000 or VT-VSPA1 amplifiers support analog/digital input signals (e.g., 0–10V, 4–20mA).
• Installation Standards: Baseplate mounting compliant with DIN24340 Type D or ISO 5781; port configurations include P (pressure), A (work), B (return), Y (pilot oil drain).
• Additional Functions: Optional check valves, pressure gauge ports, and overpressure protection devices (e.g., spring-loaded relief valves) to adapt to diverse operating conditions.
Application Scenarios
• Industrial Applications: Widely used in construction machinery (e.g., excavators, cranes), industrial automation equipment (e.g., hydraulic presses, injection molding machines), and aerospace hydraulic systems.
• Functional Realization:
• Pressure Regulation: Reduces pressure in branch circuits to protect actuators (e.g., hydraulic cylinders, motors).
• Remote Control: Integrates with solenoid valves and PLCs for remote pressure setting and dynamic adjustment.
• Safety Protection: Prevents system overpressure damage via overpressure protection devices, ensuring equipment safety.
Model Analysis Example
• DRE30-30B/100YM:
• DRE30: Indicates the 30mm bore diameter pressure reducing valve series.
• 30B: May denote a specific pressure rating or structural version (e.g., with a check valve).
• 100YM: Specifies a maximum operating pressure of 100 bar; "Y" represents external pilot oil drain, and "M" indicates pressure protection functionality.
Selection and Maintenance Recommendations
• Selection Criteria: Choose models based on system pressure, flow requirements, installation space, and control precision needs. For high-pressure applications, select the 315YM variant; for precise control, opt for integrated amplifiers.
• Maintenance Tips: Regularly inspect oil cleanliness to prevent pilot valve blockage; calibrate the relationship between electrical signals and pressure; use nitrile or fluororubber seals when replacing components to accommodate different oil properties.
Summary: The DRE30-30B hydraulic control valve, as a representative of pilot-operated proportional pressure reducing valves, excels in high-precision pressure regulation, versatile configuration options, and broad industrial applicability. It is an indispensable component in hydraulic systems, catering to complex pressure control demands across conventional industrial equipment and advanced aerospace applications.
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