Product Overview
The Rexroth DB 30-1-52/315 (Material Number R900593795) is a direct-operated pressure relief valve engineered for precise system pressure limitation and overload protection in industrial hydraulic circuits. As a member of the proven DB series, this valve operates on a spring-loaded poppet principle: system pressure acts on the valve poppet against an adjustable compression spring, and when the set pressure is reached, the poppet lifts to divert excess flow to the tank port, thereby capping circuit pressure at the desired level. The DB 30-1-52/315 is a screw-in cartridge-style pressure control valve with a nominal pressure rating of 315 bar, making it suitable for high-pressure hydraulic power units, test stands, and machine tool systems where reliable, repeatable pressure regulation is critical. Its compact cartridge design allows direct installation into manifold blocks and housings, minimizing leakage paths and simplifying system integration.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | Pressure Control Valve (Pressure Relief Valve) |
| Model Designation | DB 30-1-52/315 |
| Material Number | R900593795 |
| Operating Pressure | Up to 315 bar (nominal pressure rating) |
| Actuation Principle | Direct-operated, spring-loaded poppet / seat design |
| Mounting & Connection | Screw-in cartridge, standard Rexroth cavity interface |
| Adjustment | Adjustable pressure setting via spring preload |
Engineering Features & Advantages
- Precision Pressure Limiting: Direct-operated poppet design delivers fast, accurate response to pressure spikes, protecting downstream components from overload and extending system service life.
- High-Pressure Capability: Rated to 315 bar, suitable for demanding high-pressure industrial hydraulic circuits and compact power units.
- Cartridge Construction: Screw-in cartridge format enables space-saving manifold mounting, reduces external leakage points, and simplifies maintenance and replacement.
- Industrial Reliability: Built for continuous operation under severe industrial conditions with stable pressure regulation across the operating range.
- Direct Fit Replacement: Exact dimensional and functional compatibility with original Rexroth OEM standards for the DB 30 series.
Typical Industrial Applications
The Rexroth DB 30-1-52/315 pressure relief valve is widely deployed in hydraulic power units and manifold systems across heavy industry, including plastic injection molding machines, metallurgical and forming presses, CNC machine tool hydraulic circuits, and general industrial power packs requiring dependable system pressure limitation and overload protection.
PRODUCT IMAGES

REXROTH DB 30-1-52/315 / R900593795 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 DB 30-1-52/315 / R900593795 Pressure Relief Valve. This Germany-made hydraulic component features a pilot-operated design, delivering leak-free, reliable fluid control for heavy-duty industrial systems.