Product Overview
The Rexroth DA 10-2-56/200-17 (Material No. R900597015) is a pilot-operated pressure unloading valve belonging to the DA series of pressure control valves. It is engineered to automatically unload a hydraulic system to tank when a preset pressure threshold is reached, thereby reducing power consumption, limiting heat generation, and protecting downstream components from sustained overpressure. The valve operates on a balanced spool principle with an adjustable spring-loaded pilot stage, delivering precise and repeatable pressure control in continuous industrial duty. With a nominal size of 10 and a pressure rating of 200 bar, this model is a direct-fit replacement for original Rexroth DA series valves and is widely deployed in accumulator charging circuits, high-low pump systems, and pressure-holding applications.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | Pressure Control Valve — Pressure Unloading Valve |
| Model Designation | DA 10-2-56/200-17 |
| Material Number | R900597015 |
| Nominal Size | NG10 (DIN 24340 / ISO 4401 size 10 interface) |
| Operating Pressure | Up to 200 bar (adjustable pressure setting) |
| Adjustment Range | 56 bar spring range (per model code designation) |
| Design Principle | Pilot-operated, balanced spool with spring-loaded adjustment |
| Mounting & Connection | Subplate mounting, ISO 4401 / DIN 24340 standard interface |
| Hydraulic Fluid | Mineral oil based hydraulic fluid (HL, HLP per DIN 51524) |
| Seal Material | NBR (standard), suitable for industrial temperature range |
Engineering Features & Advantages
- Precision Pressure Control: The pilot-operated spool design delivers accurate, repeatable unloading pressure with minimal hysteresis, ensuring stable system pressure regulation across the full adjustment range.
- Energy-Efficient Unloading: Automatically diverts pump flow to tank once the set pressure is achieved, reducing power draw, limiting oil temperature rise, and extending the service life of pumps and downstream components.
- Robust Spool & Sleeve Construction: Hardened, precision-lapped spool and sleeve assembly resists contamination-induced wear and maintains consistent metering performance under continuous industrial duty.
- 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.
Typical Industrial Applications
With a nominal size of 10 and a pressure rating of 200 bar, this model is a direct-fit replacement for original Rexroth DA series valves and is widely deployed in accumulator charging circuits, high-low pump systems, and pressure-holding applications.
PRODUCT IMAGES
REXROTH DA 10-2-56/200-17 / R900597015 Pressure Unloading Valve
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Shop the genuine REXROTH DA 10-2-56/200-17 / R900597015 Pressure Relief Valve. This German-made hydraulic component features a direct-acting design, delivering leak-free, reliable fluid control for heavy-duty industrial systems.