THM – DB/DBW – Pressure Relief valve
Ensure absolute system safety and consistent pressure control in your highest-capacity hydraulic circuits with the THM DB/DBW Series Pilot Operated Pressure Relief Valve from Thm Hydraulics. Engineered to act as the primary fail-safe and pressure regulator for massive fluid power systems, this valve effortlessly processes flow rates up to 650 L/min while sustaining extreme maximum pressures up to 350 bar. Available in standard pilot-operated configurations (DB) or with advanced solenoid-actuated unloading (DBW), this series provides the uncompromising over-pressure protection required by heavy civil, road, and industrial machinery. With standardized subplate and threaded mounting options, the DB/DBW Series drops seamlessly into your custom manifolds to safeguard your expensive pumps and actuators.
Core Technical Specifications:-
- Valve Architecture: Pilot Operated Pressure Relief Valve
- Model Series: THM DB (Standard) / THM DBW (Solenoid Vented)
- Standard Sizes: 10 to 30
- Maximum Operating Pressure: Up to 350 bar (Across 5 distinct pressure ranges)
- Maximum Flow Rate: Up to 650 L/min
- Mounting Options: Threaded In-Line or Subplate Mounting
Key Features & Engineering Advantages:-
- Advanced Solenoid Venting (DBW Series): The DBW model features an integrated 3 WE 6 directional control valve, allowing for remote, electrical pump unloading. An optional time delay is also available for the unloading process, ensuring smooth depressurization and entirely preventing destructive hydraulic shock across the system.
- Massive Flow Processing: The internal pilot and main spool geometries are hydro-dynamically optimized to smoothly process up to 650 liters of fluid per minute, ensuring immediate, bottleneck-free relief during sudden pressure spikes.
- Universal Standard Integration: The subplate mounting options strictly conform to standard ISO 6264-06, 08, or 10 interfaces, as well as DIN 24 340 form E and CETOP–RP 121 H porting patterns, guaranteeing effortless drop-in compatibility worldwide.
- Scalable Pressure Ranges: Available in five distinct pressure ranges, allowing engineers to precisely match the relief valve's sensitivity to the exact safe-operating limits of the specific hydraulic circuit.
Ideal Industry Applications:-
The massive 650 L/min capacity, universal mounting, and fail-safe pressure relief of the DB/DBW Series make it a mandatory safety component for:
- Heavy Civil & Road Machinery: Serving as the main pump relief and system protection valve on large-scale asphalt pavers, heavy motor graders, and road milling machines operating under intense continuous loads.
- Large-Scale Industrial Power Units: Managing system pressure and automated unloading in the centralized hydraulic blocks of heavy metal-forming presses and plastic injection molding equipment.
- Extreme Earthmoving Equipment: Safeguarding the massive boom, stick, and bucket cylinder circuits on 50+ ton mining excavators and high-capacity wheel loaders from severe physical shock overloads.
- Heavy-Duty Material Handling: Providing critical over-pressure protection for the heavy lifting winches and telescopic boom extensions on mobile industrial cranes.
Why Choose the THM DB/DBW Series?
- Uncompromising Safety: Instantly bleeds off dangerous pressure spikes to protect your entire hydraulic infrastructure.
- Automated Efficiency: The DBW's solenoid venting allows for remote pump unloading, drastically saving energy during idle cycles.
- Guaranteed Compatibility: Strict adherence to ISO, DIN, and CETOP standards ensures perfect integration into existing manifold blocks.
