Product Overview
The Rexroth DBDH 6 G1A/50 (Material No. R900424198) is a direct operated pressure relief valve from the proven DBDH series, engineered by Bosch Rexroth for precise system pressure limitation and protection in industrial hydraulic circuits. This valve operates on a spring-loaded poppet principle: system pressure acts directly on the poppet, and when the preset cracking pressure is exceeded, the poppet lifts off its seat to discharge excess flow to the tank port, thereby limiting the maximum working pressure of the circuit. The “DBDH” designation identifies a direct operated pressure relief valve with a threaded cartridge-style body, while the “6” denotes NG6 (nominal size 6) and the “G1A” specifies the adjustment type and pressure rating. With a nominal pressure setting of 50 bar, this valve is ideally suited for low-pressure clamping circuits, pilot pressure control, and overload protection duties where fast, reliable direct-acting response is required. As a genuine Rexroth component, the R900424198 delivers the dimensional accuracy, repeatability, and long service life demanded by OEM and MRO hydraulic systems worldwide.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | Direct Operated Pressure Relief Valve (Pressure Control Valve) |
| Model Designation | DBDH 6 G1A/50 |
| Manufacturer Part Number | R900424198 |
| Nominal Size | NG6 (CETOP 3 / ISO 4401 size 6 interface) |
| Pressure Setting | 50 bar (nominal set pressure, spring-adjusted) |
| Operating Pressure | Standard Industrial Grade (up to rated bar, direct-acting poppet design) |
| Adjustment Type | G1A — threaded adjustment with protective cap |
| Mounting & Connection | Threaded cartridge / subplate mounting, standard ISO / manufacturer interface |
| Working Fluid | Mineral oil based hydraulic fluid (HLP / HLP-D per DIN 51524) |
Engineering Features & Advantages
- Precision Performance: Direct-acting poppet design provides fast response to pressure peaks with minimal override, ensuring accurate and repeatable pressure limitation at the 50 bar set point.
- Stable Pressure Control: Spring-loaded poppet with damped response characteristics minimizes pressure fluctuations and chatter, protecting downstream components from pressure spikes.
- Industrial Reliability: Built for continuous operation under severe industrial conditions, with hardened seating surfaces and a robust cartridge body for long maintenance-free service life.
- 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 nominal pressure setting of 50 bar, this valve is ideally suited for low-pressure clamping circuits, pilot pressure control, and overload protection duties where fast, reliable direct-acting response is required.
PRODUCT IMAGES
REXROTH DBDH 6 G1A/50 / R900424198 Direct Operated Pressure Relief Valve
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- Peace of Mind: Covered by our 12-Month Replacement Warranty.
Shop the genuine REXROTH DBDH 6 G1A/50 / R900424198 Pressure Relief Valve. This German-made hydraulic component features a poppet design, delivering leak-free, reliable fluid control for heavy-duty industrial systems.