Product Overview
The Rexroth DBW 30 B2-5X/350-6EW230N9K4 (Material Number R900906285) is a pilot-operated, solenoid-controlled pressure relief valve designed for precise system pressure limitation and electrical unloading in industrial hydraulic circuits. Part of the proven Rexroth DBW series, this valve combines a pilot stage with a main spool stage, allowing it to manage high flow rates while maintaining accurate pressure control. The integrated directional solenoid enables remote electrical selection between pressure-holding and unloading functions, making it ideal for two-pressure or load-sensing system architectures. With a size 30 (NG30) mounting pattern and a 350 bar pressure rating, this valve is engineered for demanding applications requiring reliable overpressure protection and controlled pressure relief.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | Hydraulic Valve – Pilot-Operated Pressure Relief Valve with Solenoid Unloading |
| Model Designation | DBW 30 B2-5X/350-6EW230N9K4 / R900906285 |
| Size / Nominal Diameter | NG30 (Size 30) |
| Operating Pressure | Up to 350 bar (pressure setting range) |
| Solenoid Voltage | 230 V AC (EW230N9K4 solenoid) |
| Mounting & Connection | Subplate mounting, ISO 6264 / Rexroth standard interface |
| Adjustment Type | Adjustable pressure setting (standard hex or hand knob) |
Engineering Features & Advantages
- Precision Pressure Control: Pilot-operated design ensures accurate and stable pressure limitation across varying flow rates, minimizing system pressure fluctuations.
- Solenoid Unloading Function: The integrated 230 V AC solenoid allows remote electrical switching between pressure-holding and unloading modes, enabling efficient two-pressure circuit operation.
- Industrial Reliability: Built for continuous operation under severe industrial conditions, with robust construction and proven Rexroth pilot-stage technology.
- Direct Fit Replacement: Exact dimensional and functional compatibility with original OEM standards, ensuring drop-in replacement for Rexroth DBW series valves.
Typical Industrial Applications
This valve is commonly used in plastic injection molding machines for clamping and injection pressure control, metallurgical presses for overload protection, construction and marine hydraulics for load-holding circuits, and CNC machine tools for system pressure regulation and safety relief.
PRODUCT IMAGES
Rexroth DBW 30 B2-5X/350-6EW230N9K4 / R900906285 Solenoid Operated Pressure Relief Valve
âš¡ 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 30 B2-5X/350-6EW230N9K4 / R900906285 Proportional Pressure Relief Valve. This Germany-made 230 VAC hydraulic component features a pilot-operated design with proportional solenoid, delivering leak-free, reliable fluid control for heavy-duty industrial systems.