Rexroth Type DB Pilot Relief Valve | DB10 | DB20 | DB30 | 315 Bar Hydraulic Pressure Control | DB10-1-50B

DB Series Pilot-Operated Hydraulic Pressure Relief Valves

Product Overview: The DB series consists of high-performance pilot-operated pressure relief valves specifically engineered for heavy-duty industrial environments. As the primary pressure control hub for hydraulic power units and large actuators, the DB series utilizes a pilot stage to actuate the main spool with extreme precision. It maintains a stable set pressure even under massive flow conditions. Whether serving as a system safety valve or a main stage for remote pressure regulation, the DB series is renowned for its superior repeatability and minimal pressure override, making it a staple in metal forming, injection molding, and large-scale power unit systems.

Featured models include: DB10-1-50B/315, DB20, DB30, DB10-1-10B/100, and the subplate-mounted DB30G.

Key Technical Advantages:

• Comprehensive Size Range: Available from Size 10 (NG10) to Size 30 (NG30), accommodating flow requirements from small power packs to ultra-large hydraulic systems.

• High-Pressure Stability: Rated up to 31.5 MPa (315 bar), the pilot-operated design effectively dampens high-frequency vibrations, ensuring smooth pressure modulation.

• Flexible Mounting Configurations: The DB…G series supports standard subplate mounting for manifold integration, while basic models are designed for inline piping.

• Precision Adjustment: Features adjustment knobs or bolts with protective caps, allowing for fine-tuned pressure compensation during active system operation.

Detailed Specifications & Parameters:

• Featured Model Matrix:

  • DB10-1-50B/315: Size 10, 50 design series, max adjustable pressure 315 bar.

  • DB10-1-10B/100: Size 10, 10 design series, pressure range up to 100 bar for low-to-mid pressure monitoring.

  • DB20 / DB30: Standard NG20 and NG30 high-flow versions, supporting bypass capacities up to 600 L/min.

  • DB30G: Size 30 subplate-mounted type, optimized for low pressure-drop across the valve.

• Core Technical Specs:

  • Mounting Standard: ISO 6264.

  • Pressure Ranges: Options for 50, 100, 200, 315, and 350 bar.

  • Fluid Compatibility: Mineral oils (HL, HLP).

  • Operating Temperature: -30°C to +80°C.