Product Overview
The Rexroth DR6DP2-5X/315YM (Material No. R900592501) is a direct-operated, pilot-assisted pressure reducing valve from the proven DR6 series, designed to maintain a constant reduced outlet pressure regardless of fluctuations in the primary supply pressure or changes in flow demand. As a member of the Rexroth 5X series (component series 50 to 59), this valve is engineered for panel or manifold mounting in industrial hydraulic power units and is widely specified as a drop-in replacement for OEM installations. The valve operates on a balanced spool principle: the secondary pressure acts against an adjustable spring force, and the spool modulates to throttle the inlet flow, holding the reduced pressure steady at the outlet port. The “315” designation indicates a maximum secondary pressure setting of 315 bar, while the “YM” suffix denotes the specific adjustment and sealing configuration. This pressure control valve is a critical element in circuits requiring a stable, lower-pressure branch — such as clamping, pilot, or control circuits — fed from a higher-pressure main system.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | Pressure Control Valve (Pressure Reducing Valve) |
| Model Designation | DR6DP2-5X/315YM |
| Material Number | R900592501 |
| Series | 5X (Component Series 50–59) |
| Nominal Size | NG6 (DIN 24340 / CETOP 3 interface) |
| Maximum Secondary Pressure | 315 bar (adjustable) |
| Operating Pressure | Standard Industrial Grade (up to rated bar) |
| Mounting & Connection | Subplate mounting, ISO 4401 / CETOP 3 interface |
| Adjustment Type | Spindle with hexagon socket and locknut (YM configuration) |
| Hydraulic Fluid | Mineral oil based hydraulic fluid per DIN 51524 |
Engineering Features & Advantages
- Precision Pressure Regulation: The balanced spool and spring-loaded control mechanism deliver accurate, repeatable secondary pressure control with minimal hysteresis, ensuring stable operation of downstream actuators and control circuits.
- Direct-Operated Response: Fast reaction to pressure and flow changes without the lag associated with pilot-operated designs, making it ideal for dynamic industrial duty cycles.
- Industrial Reliability: Constructed for continuous duty with durable, corrosion-resistant materials and proven engineering for maximum system uptime.
- 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
As a member of the Rexroth 5X series (component series 50 to 59), this valve is engineered for panel or manifold mounting in industrial hydraulic power units and is widely specified as a drop-in replacement for OEM installations.
PRODUCT IMAGES

REXROTH DR6DP2-5X/315YM / R900592501 Pressure Reducing Valve
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Shop the genuine REXROTH DR6DP2-5X/315YM / R900592501 Pilot-Operated Pressure Relief Valve. This Germany-made hydraulic component features a pilot-operated design, delivering leak-free, reliable fluid control for heavy-duty industrial systems.





