Product Overview
The Rexroth DB30-2N53/315 (Material No. R900976443) is a pilot-operated pressure relief valve from the proven DB series, engineered to limit and safely control system pressure in industrial hydraulic circuits. The valve operates on a two-stage working principle: a direct-acting pilot stage senses system pressure and controls the main poppet-type spool, which discharges excess flow to tank once the set pressure is reached. Configured with a 315 bar pressure rating and a 2N53 adjustment/connection variant, this valve provides precise, stable pressure regulation with minimal pressure override and reliable reseating characteristics. It serves as a critical safety and pressure-limiting component in high-pressure hydraulic power units, protecting pumps, actuators, and downstream components from overpressure while maintaining consistent system performance.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | Hydraulic Valve — Pressure Control Valve (Pilot-Operated Pressure Relief Valve) |
| Model Designation | DB30-2N53/315 |
| Material / Order Number | R900976443 |
| Operating Pressure | Up to 315 bar (pressure rating per model code) |
| Working Principle | Pilot-operated, poppet-type main stage with adjustable spring-loaded pilot stage |
| Adjustment Type | 2N53 adjustment variant (pressure setting via adjustment element) |
| Mounting & Connection | Standard ISO / Manufacturer Interface — subplate mounting, port pattern per Rexroth DB30 series |
| Hydraulic Fluid | Mineral oil based hydraulic fluids (HL, HLP) per standard industrial specification |
Engineering Features & Advantages
- Precision Performance: Pilot-operated poppet design delivers accurate pressure limiting with low pressure override and hysteresis, ensuring stable system pressure even under varying flow demands.
- Industrial Reliability: Built for continuous operation under severe industrial conditions, with robust internal components resistant to contamination and pressure spikes.
- Direct Fit Replacement: Exact dimensional and functional compatibility with original OEM standards, allowing drop-in replacement for Rexroth DB30 series valves without modification to manifolds or piping.
- Fast Response & Safe Reseating: Quick opening and reliable closing behavior protect downstream components during sudden pressure surges or load drops.
Typical Industrial Applications
This pressure relief valve is suited for a wide range of heavy industrial hydraulic systems, including plastic injection molding machines, metallurgical presses, CNC machine tools, and general hydraulic power units where precise system pressure limiting and overload protection are required. It is equally applicable in construction and marine hydraulic circuits demanding dependable pressure control at ratings up to 315 bar.
PRODUCT IMAGES
REXROTH DB30-2N53/315 / R900976443 Pressure Relief Valve
⚡ Emergency Plant Maintenance & Ready-to-Ship Notice:
- Authentic & Fully Tested: 100% bench tested for hydraulic response, pressure rating, and null-bias stability before dispatch.
- Fast Dispatch: In-stock units ready for same-day dispatch via DHL / FedEx Express directly to your plant.
- Pre-Shipment Verification: High-definition photos, video testing runs, and serial number verification provided prior to shipment.
- Peace of Mind: Covered by our 12-Month Replacement Warranty.
Shop the genuine REXROTH DB30-2N53/315 / R900976443 Pressure Relief Valve. This German-made hydraulic component features a direct-operated design, delivering leak-free, reliable fluid control for heavy-duty industrial systems.