Product Overview
The Rexroth DR 30-5-52/200YM (Material No. R900597158) is a pilot-operated pressure reducing valve designed for industrial hydraulic systems requiring a stable, reduced secondary pressure independent of the primary system pressure and flow fluctuations. As part of the Rexroth DR series, this valve maintains a constant outlet pressure in the secondary circuit, protecting downstream components such as actuators, proportional valves, and instrumentation from over-pressurization. The valve operates on a balanced spool principle with a pilot stage, delivering precise pressure regulation and fast response across a wide range of operating conditions. Its robust housing and precision-machined spool make it suitable for continuous duty in demanding industrial environments.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | Pressure Control Valve – Pilot-Operated Pressure Reducing Valve |
| Model Designation | DR 30-5-52/200YM |
| Material Number | R900597158 |
| Series | DR Series (Pilot-Operated) |
| Nominal Size | NG30 (Size 30) |
| Pressure Adjustment Range | Up to 200 bar (secondary pressure setting) |
| Operating Pressure | Standard Industrial Grade (Up to rated bar) |
| Adjustment Type | Mechanical adjustment (set screw / hand knob) |
| Mounting & Connection | Standard ISO / Manufacturer Interface |
| Hydraulic Fluid | Mineral oil based hydraulic fluids (HL, HLP, HLP-D) |
Engineering Features & Advantages
- Precision Pressure Regulation: The pilot-operated design maintains a constant reduced outlet pressure with minimal deviation, even when primary pressure and flow rates fluctuate significantly.
- Balanced Spool Design: The balanced spool minimizes the influence of primary pressure on the regulated secondary pressure, ensuring stable performance across the full adjustment range.
- Industrial Reliability: Built for continuous operation under severe industrial conditions, with a robust housing and wear-resistant spool and seat components.
- Direct Fit Replacement: Exact dimensional and functional compatibility with original OEM standards, ensuring drop-in replacement without modification to existing manifolds or piping.
- Wide Adjustment Range: The 200YM pressure rating provides flexibility for a broad spectrum of secondary circuit pressure requirements.
Typical Industrial Applications</
PRODUCT IMAGES

REXROTH DR 30-5-52/200YM / R900597158 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 DR 30-5-52/200YM / R900597158 Pressure Relief Valve. This Germany-made hydraulic component features a pilot-operated design, delivering leak-free, reliable fluid control for heavy-duty industrial systems.