Product Overview
The Rexroth DBW 20 B1-52/315-6EG24N9K4 (Material Number R900920619) is a pilot-operated, solenoid-controlled pressure relief valve from the proven Rexroth DBW series. It is designed to limit and electrically unload system pressure in hydraulic circuits, combining a pilot-operated pressure relief function with a directional solenoid actuation stage. The valve is normally closed in its de-energized state, building pressure up to the set value, and switches to an unloading condition when the integrated DC solenoid is energized. With a size 20 (NG20) mounting interface and a pressure rating of 315 bar, this valve is engineered for high-pressure industrial power units, manifolds, and centralized hydraulic systems requiring precise pressure control and reliable electrical override.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | Solenoid Operated Pressure Relief Valve (Pilot-Operated, Pressure Control Valve) |
| Model Designation | DBW 20 B1-52/315-6EG24N9K4 |
| Material Number | R900920619 |
| Size / Nominal Diameter | NG20 (Size 20) |
| Operating Pressure | Up to 315 bar (pressure adjustment range per model code) |
| Solenoid Voltage | 24 V DC (EG24 designation) |
| Electrical Connection | DIN EN 175301-803 (N9 connector, K4 designation) |
| Mounting & Connection | Subplate mounting, ISO 6264 / Rexroth NG20 interface |
| Sealing Material | NBR (standard mineral oil compatibility) |
| Adjustment Type | Sleeve with hexagon and locknut (B1 designation) |
Engineering Features & Advantages
- Precision Pressure Control: Pilot-operated main stage delivers accurate, stable pressure limitation with minimal hysteresis and low pressure overshoot, ensuring consistent system protection across the full 315 bar range.
- Solenoid Unloading Function: The integrated 24 V DC solenoid allows electrical switching between pressure-holding and unloading modes, enabling remote control, sequence operation, and energy-saving pump unloading in automated circuits.
- Robust Pilot Stage Design: The DBW series pilot valve with damped spool movement provides smooth response and suppresses pressure spikes, protecting downstream components from shock loads.
- Industrial Reliability: Designed for dependable long-term operation in demanding industrial environments, with quality bearings and sealing systems ensuring extended maintenance intervals.
- Direct Fit Replacement: Exact dimensional and functional compatibility with original REXROTH OEM standards, ensuring drop-in replacement without modification to existing manifolds or piping.
Typical Industrial Applications
With a size 20 (NG20) mounting interface and a pressure rating of 315 bar, this valve is engineered for high-pressure industrial power units, manifolds, and centralized hydraulic systems requiring precise pressure control and reliable electrical override.
PRODUCT IMAGES
REXROTH DBW 20 B1-52/315-6EG24N9K4 / R900920619 Solenoid Operated 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 DBW 20 B1-52/315-6EG24N9K4 / R900920619 Solenoid Operated Pressure Relief Valve. This Germany-made 24V DC hydraulic component features a pilot-operated design, delivering leak-free, reliable fluid control for heavy-duty industrial systems.