Product Overview
The Rexroth DR20-5-5X/100Y (Material No. R900597198) is a pilot-operated pressure reducing valve from the proven DR series, designed to maintain a constant reduced outlet pressure regardless of fluctuations in the primary supply pressure or changes in flow demand. The valve is a direct-controlled, spring-loaded poppet-type unit in which the pilot stage senses the reduced pressure at the outlet port and modulates the main spool to hold the set value. With a nominal size of NG20 (SAE 3/4 in) and a pressure rating of 100 bar, this valve is engineered for continuous industrial duty in hydraulic power units, test stands, and machine tool circuits where a stable secondary pressure is essential for the safe and repeatable operation of downstream actuators and controls.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | Pressure Control Valve (Pressure Reducing Valve) |
| Model Designation | DR20-5-5X/100Y / R900597198 |
| Nominal Size | NG20 (SAE 3/4 in) |
| Operating Pressure | Reduced pressure set to 100 bar; primary pressure up to 315 bar |
| Adjustment Type | Mechanical adjustment via set screw with lock nut |
| Mounting & Connection | Subplate mounting, ISO 5781 / DIN 24340 interface |
| Seal Material | NBR (Buna-N), suitable for mineral oil based hydraulic fluids |
| Fluid Temperature Range | -20 °C to +80 °C |
Engineering Features & Advantages
- Precision Performance: The pilot-operated poppet design delivers accurate, repeatable reduced pressure control with minimal hysteresis and excellent pressure override characteristics across the full flow range.
- Stable Regulation: Maintains the set outlet pressure even under varying inlet pressure and fluctuating flow demand, protecting sensitive downstream components from pressure spikes.
- Industrial Reliability: Built for continuous operation under severe industrial conditions with a robust housing, hardened internal components, and proven Rexroth manufacturing quality.
- Direct Fit Replacement: Exact dimensional and functional compatibility with original OEM standards, allowing drop-in replacement without modification to existing manifolds or piping.
Typical Industrial Applications
This pressure reducing valve is widely used in hydraulic systems requiring a stable secondary pressure, including plastic injection molding machines, metallurgical presses, CNC machine tools, hydraulic power units, and general industrial test stands. It is also commonly found in marine and offshore hydraulic circuits where reliable pressure control is critical for safe operation.
PRODUCT IMAGES
REXROTH DR20-5-5X/100Y / R900597198 Pressure Reducing 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 DR20-5-5X/100Y / R900597198 Pressure Relief Valve. This Germany-made hydraulic component features a pilot-operated design, delivering leak-free, reliable fluid control for heavy-duty industrial systems.