HD – DB – Pilot Operated Pressure Relief Valve
Safeguard your most powerful hydraulic circuits against catastrophic overpressure with the HD DB Series Pilot Operated Pressure Relief Valve. Available through THM Hydraulics, this heavy-duty valve is engineered to expertly manage massive fluid volumes, providing smooth, chatter-free pressure regulation. Unlike direct-acting valves, the pilot-operated design allows this unit to comfortably handle extreme flow rates up to 650 L/min and operating pressures reaching 350 bar without excessive pressure override. With five distinct pressure ranges, three adjustment elements, and three versatile mounting options, the HD DB (50 Series) delivers the ultimate, highly customizable safety net for large-scale industrial and mobile machinery.
Core Technical Specifications:-
- Component Architecture: Pilot Operated Pressure Relief Valve
- Model Type: HD-DB (50 Series)
- Maximum Operating Pressure: Up to 350 bar
- Maximum Flow Capacity: Up to 650 L/min
- Pressure Ranges: 50, 100, 200, 315, and 350 bar configurations
- Pressure Adjustment: 3 distinct optional adjustment elements
- Mounting Styles: Sub-plate mounting, Threaded mounting, and Manifold mounting
Key Features & Engineering Advantages:-
- Smooth, Pilot-Operated Relief: The internal pilot stage reacts precisely to pressure spikes, opening the main spool gradually to vent massive amounts of fluid. This eliminates violent hydraulic shock and protects your steel lines, pumps, and actuators.
- Monumental Flow Capacity: Engineered with optimized internal galleries to safely bypass up to 650 L/min back to the reservoir, making it the primary safety valve for massive, high-power hydraulic circuits.
- 5 Highly Tuned Pressure Ranges: Choose the exact pressure threshold your system requires (from a sensitive 50 bar up to a crushing 350 bar) to ensure the valve cracks open exactly when your specific circuit schematic dictates.
- 3 Custom Adjustment Elements: Tailor the valve’s tuning mechanism to your operational environment, ensuring the pressure setting remains secure against heavy machine vibration and unauthorized adjustments.
- Ultimate Mounting Versatility: Seamlessly integrate the valve into any setup. Choose Sub-plate mounting for standard layouts, Threaded mounting for fast in-line installations, or Manifold mounting to sink the cartridge directly into a custom hydraulic block.
Ideal Industry Applications:-
The massive 650 L/min capacity and 350 bar endurance make the HD DB Series the premier choice for:
- Large-Scale Hydraulic Power Units (HPUs): Serving as the master pressure relief valve for central power packs driving entire factory floors.
- Heavy-Duty Forging & Pressing: Protecting massive metal forming cylinders from destructive thermal expansion and operational pressure spikes.
- Primary Material Processing: Managing the extreme hydraulic forces required in steel rolling mills, large-scale mining crushers, and heavy scrap balers.
- Marine & Offshore Engineering: Safeguarding the high-volume fluid networks powering ship elevators, large lock gates, and heavy winch systems.
Why Choose the HD DB Series?
- Uncompromising Pump Protection: When you are pushing hundreds of liters of fluid per minute, a pressure spike can destroy a pump instantly. The DB series vents that pressure safely and quietly.
- Zero Hydraulic Chatter: The pilot-operated mechanism ensures that even under maximum flow conditions, the valve opens and closes smoothly, extending the life of your entire system.
- Total Integration Flexibility: Whether you are building a custom block from scratch or retrofitting an old hard-piped machine, the three mounting styles guarantee a perfect fit.
