Rexroth Type DBW Solenoid Relief Valve | DBW10 | DBW20 | 31.5 MPa | AC 220V DC 24V | Pilot Operated Unloading Valve

DBW Series Pilot-Operated Solenoid Relief Valves

Product Overview: The DBW series is a high-performance pilot-operated pressure relief valve integrated with a solenoid directional valve. Its core functionality lies in switching the hydraulic system between “set pressure” and “low-pressure unloading” via electrical signals. In injection molding machines, presses, and large-scale hydraulic stations, DBW valves are essential for enabling no-load pump starts or reducing energy consumption and heat generation by unloading during idle cycles. Rated up to 31.5 MPa, this series features heavy-duty solenoid coils for maximum reliability during 100% duty cycle operation.

Featured models include: DBW-10-A-2-5X/31.5-6EW220-50NZ5L/R12 and DBW-20B-13X/80G24NZ5L.

Key Technical Advantages:

• Solenoid-Controlled Unloading: The top-mounted solenoid valve allows remote switching of the pilot oil circuit, achieving instantaneous system unloading for energy efficiency.

• Extensive Pressure Range: Supports operating pressures up to 31.5 MPa (315 bar), making it suitable for all heavy-duty industrial scenarios from medium to high pressure.

• Versatile Electrical Options: Compatible with various industrial voltages like W220 (AC 220V) and G24 (DC 24V). Includes Z5L (lighted connectors) for easy on-site status diagnostics.

• Shock Resistance & Durability: The pilot-operated design with hydraulic cushioning on the main spool effectively dampens system shocks, extending the service life of both the valve and piping seals.

Detailed Specifications & Parameters:

• Featured Model Matrix:

  • DBW-10-A-2-5X/31.5-6EW220…: Size 10, 5X design series, max pressure 31.5 MPa, AC 220V control.

  • DBW-20B-13X/80G24…: Size 20, 13X design series, set pressure 80 bar (8 MPa), DC 24V industrial control.

• Core Technical Specs:

  • Mounting Standard: ISO 6264 (NG10, NG20).

  • Max Flow Capacity: NG10 (up to 250 L/min); NG20 (up to 500 L/min).

  • Protection Class: Equipped with Z5L connectors, IP65 rated against dust and water.

  • Manual Override: Standard “N” type emergency manual override button.