DBW Solenoid Relief Valve | DBW10 | DBW20 | 315 Bar | Pilot Operated Unloading Valve

DBW Series Pilot-Operated Solenoid Relief Valves

Product Overview: The DBW series is a high-performance pilot-operated relief valve integrated with a solenoid directional valve, designed for hydraulic circuits requiring multi-stage pressure switching or system unloading. Beyond functioning as a standard safety valve to limit peak pressure, it responds to electrical signals to allow the system to circulate oil at minimum pressure (unloading) during motor start-up or idle periods. This significantly reduces energy consumption and extends pump service life. The series complies with ISO 6264 mounting standards and offers exceptional regulation accuracy.

Featured models include: DBW10B-1-50B/315, DBW20A-1-50B/200, DBW20A-2-50B/200, and DBW20A-1-50B/315.

Key Technical Advantages:

• Solenoid Remote Unloading: The top-mounted Size 6 solenoid valve enables automated system unloading, effectively preventing excessive oil temperature rise.

• Two-Stage Spool Architecture: Features a pilot and main stage design to ensure minimal pressure override and high stability even at maximum flow and pressures up to 315 bar.

• Flexible Unloading Logic: Available in A-series (Single solenoid) and B-series (Double solenoid/specific logic) to accommodate Normally Open or Normally Closed unloading requirements.

• Optimized 50B Design: The reinforced 50B design series provides superior shock resistance and extended seal longevity.

Detailed Specifications & Parameters:

• Featured Model Matrix:

  • DBW10B-1-50B/315: Size 10, B-logic, 50B series, max rated pressure 315 bar.

  • DBW20A-1-50B/200: Size 20, A-logic, max pressure setting 200 bar, suitable for medium-high pressure systems.

  • DBW20A-2-50B/200: Size 20, “2” configuration sequence, 200 bar setting.

  • DBW20A-1-50B/315: Size 20, heavy-duty version, rated up to 315 bar.

• Core Technical Specs:

  • Nominal Size: NG10 (Size 10) / NG20 (Size 20).

  • Mounting Interface: ISO 6264 (Subplate mounting).

  • Flow Capacity: DBW10 (up to 250 L/min); DBW20 (up to 500 L/min).

  • Control Voltage: Typically 24V DC or 110V/220V AC (depending on the top solenoid coil).