Product Overview
The Rexroth DBDH 8 G1A/200 (Material No. R900424161) 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. As a poppet-type pressure control valve, it operates on a direct acting principle: a spring-loaded poppet is held against its seat until the hydraulic force generated by system pressure exceeds the set spring force, at which point the poppet lifts and routes excess flow to the tank port. The valve is adjustable via a protected setting screw, allowing stepless pressure adjustment across its rated range. With a size 8 (NG8) housing and G1A threaded connection, this model is designed for inline mounting in compact hydraulic power units, manifolds, and control blocks where reliable overpressure protection and accurate pressure setting are critical to system safety and component longevity.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | Hydraulic Valve — Direct Operated Pressure Relief Valve (Pressure Control Valve) |
| Model Designation | DBDH 8 G1A/200 |
| Material / Order Number | R900424161 |
| Nominal Size | NG8 (Size 8) |
| Pressure Adjustment Range | Up to 200 bar (spring setting range, stepless adjustment) |
| Operating Pressure | Standard Industrial Grade (rated to 200 bar set pressure) |
| Actuation Principle | Direct operated, spring-loaded poppet with seat design |
| Mounting & Connection | G1A threaded connection, inline / manifold mounting per ISO interface |
| Adjustment Method | Setting screw with lock nut, protected adjustment |
Engineering Features & Advantages
- Precision Pressure Limiting: Direct acting poppet design delivers fast, accurate response to pressure surges, protecting downstream components from overpressure events.
- Stepless Adjustment: The spring-loaded setting screw enables fine, repeatable pressure setting across the full 200 bar range with minimal hysteresis.
- Leak-Tight Sealing: Precision-ground poppet and seat geometry ensures reliable sealing at pressures below the set point, minimizing internal leakage and energy loss.
- Industrial Reliability: Built for continuous operation under severe industrial conditions, with robust housing and wear-resistant internal components.
- Direct Fit Replacement: Exact dimensional and functional compatibility with original Rexroth OEM standards, ensuring drop-in interchangeability.
Typical Industrial Applications
This valve
PRODUCT IMAGES
Rexroth DBDH 8 G1A/200 / R900424161 Direct Operated Pressure Relief Valve
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- Authentic & Fully Tested: 100% bench tested for hydraulic response, pressure rating, and null-bias stability before dispatch.
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- Peace of Mind: Covered by our 12-Month Replacement Warranty.
Shop the genuine REXROTH DBDH 8 G1A/200 / R900424161 Pressure Relief Valve. This Germany-made 200 bar hydraulic component features a direct-operated poppet design, delivering leak-free, reliable fluid control for heavy-duty industrial systems.