Product Overview
The REXROTH DBW 20 A2-5X/200-6EG24N9K4 (Material No. R900939204) is a pilot-operated, solenoid-controlled pressure relief valve manufactured by Bosch Rexroth, a global benchmark in industrial hydraulics. Part of the proven DBW series (Size 20, Component Series 5X), this valve combines a pilot-operated pressure relief cartridge with a directional solenoid pilot valve, enabling both continuous system pressure limitation and electrical unloading (vent) of the main hydraulic circuit. The valve is normally closed in its de-energized state; when the solenoid is energized, the pilot stage is vented to tank, allowing the main spool to open and divert pump flow to the return line at minimal pressure. This dual-function design makes it a cornerstone component for safety, pressure regulation, and energy-efficient pump unloading in demanding industrial power units.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | Hydraulic Valve — Solenoid Operated Pressure Relief Valve (Pilot-Operated) |
| Model Designation | DBW 20 A2-5X/200-6EG24N9K4 |
| Material Number | R900939204 |
| Nominal Size (NG) | NG20 (Size 20) |
| Pressure Adjustment Range | Up to 200 bar (pressure stage “200”) |
| Solenoid Voltage | 24 V DC (EG24) |
| Solenoid Type | Wet-pin DC solenoid, high switching performance (N9) |
| Electrical Connection | Connector K4 (DIN EN 175301-803, ISO 4400 style plug) |
| Operating Pressure | Standard Industrial Grade (Up to 200 bar rated) |
| Mounting & Connection | Subplate mounting, ISO 6264 / DIN 24340 interface, Size 20 port pattern |
| Hydraulic Fluid | Mineral oil based hydraulic fluids (HL, HLP, HLP-D per DIN 51524) |
Engineering Features & Advantages
- Precision Performance: The hydraulic valve — solenoid operated pressure relief valve (pilot-operated) delivers precise, repeatable performance with low hysteresis and stable control across the full working range.
- 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 standards, allowing straightforward retrofit into existing hydraulic systems without rework.
- Rated Capability: Rated for pressure ratings up to 200 bar, supporting stable operation across the full working range.
Typical Industrial Applications
This dual-function design makes it a cornerstone component for safety, pressure regulation, and energy-efficient pump unloading in demanding industrial power units.
PRODUCT IMAGES
REXROTH DBW 20 A2-5X/200-6EG24N9K4 / R900939204 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 A2-5X/200-6EG24N9K4 / R900939204 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.