Product Overview
The Rexroth ZDR6DB2-4X/75YM (Material No. R900431771) is a direct-operated, three-way pressure reducing valve from the proven ZDR6D series, size 6 (NG6 / CETOP 3). Manufactured by Bosch Rexroth, this valve is designed to reduce a system pressure to a lower, constant regulated outlet pressure regardless of fluctuations in the primary circuit. The “DB2” designation indicates a three-way pressure reducing function with pressure limitation on the secondary side, capable of both reducing and relieving excess pressure at port A. The “75YM” code specifies a pressure rating of 75 bar and a specific adjustment and spring configuration. The valve is a spool-type pressure control valve, not a pump, and is intended for panel or manifold mounting in industrial hydraulic circuits requiring precise secondary pressure control.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | Hydraulic Valve – Pressure Control Valve (Pressure Reducing Valve) |
| Model Designation | ZDR6DB2-4X/75YM |
| Material Number | R900431771 |
| Valve Function | Three-way pressure reducing with secondary pressure relief |
| Size / Interface | NG6 (CETOP 3 / ISO 4401-03) subplate mounting |
| Operating Pressure | Up to 75 bar regulated secondary pressure (standard industrial grade) |
| Actuation Type | Direct-operated spool with mechanical adjustment (set screw / hand knob) |
| Mounting & Connection | Standard ISO 4401 / Manufacturer Interface (subplate mounting) |
Engineering Features & Advantages
- Precision Performance: Direct-operated spool design delivers accurate, stable secondary pressure regulation with minimal hysteresis and fast response to load changes.
- Three-Way Pressure Limiting: The DB2 configuration provides both pressure reduction at the outlet and pressure relief, protecting downstream components from overpressure.
- Industrial Reliability: Built for continuous operation under severe industrial conditions with robust housing and wear-resistant spool bore.
- Direct Fit Replacement: Exact dimensional and functional compatibility with original OEM standards for the ZDR6D series, ensuring drop-in replacement.
Typical Industrial Applications
This pressure reducing valve is commonly used in plastic injection molding machines, metallurgical presses, CNC machine tools, and general industrial hydraulic power units where a stable, reduced pressure is required for pilot circuits, clamping systems, or secondary actuators. It is also suitable for construction and marine hydraulic systems requiring reliable pressure control in confined manifold installations.
PRODUCT IMAGES
REXROTH ZDR6DB2-4X/75YM / R900431771 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 ZDR6DB2-4X/75YM / R900431771 Pressure Reducing Valve. This German-made hydraulic component features a pilot-operated design, delivering leak-free, reliable fluid control for heavy-duty industrial systems.