Product Overview
The Rexroth ZDR 6 DB3-44/75YM (Material Number R900432119) is a direct-operated sandwich plate pressure reducing valve designed for precise secondary pressure regulation in industrial hydraulic systems. Manufactured by Bosch Rexroth, this valve is part of the proven ZDR 6 series, which is engineered to reduce a higher primary system pressure to a constant, lower secondary pressure at the outlet port (A). The sandwich plate design allows for space-saving, stackable integration between a directional control valve and its subplate, eliminating the need for additional piping. The “DB3” designation indicates a pressure reducing function with a specific adjustment range, while the “44” refers to the standard sandwich plate size (NG6 / CETOP 3 interface). The “75YM” suffix denotes a 75 bar pressure rating with a specific adjustment type. This valve is ideal for applications requiring reliable, repeatable pressure reduction in circuits where compact installation and precise control are paramount.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | Sandwich Plate Pressure Reducing Valve |
| Model Designation | ZDR 6 DB3-44/75YM / R900432119 |
| Operating Pressure | Up to 75 bar (secondary pressure setting range) |
| Mounting & Connection | Sandwich plate design, NG6 / CETOP 3 interface, stackable |
| Adjustment Type | Mechanical adjustment (spindle with locknut) |
| Flow Direction | P to A (pressure reduction), with internal return to T |
| Seal Material | NBR (Buna-N) standard, suitable for mineral oil based fluids |
Engineering Features & Advantages
- Precision Pressure Regulation: Direct-operated poppet/spool design ensures accurate and stable secondary pressure control, minimizing pressure overshoot and hysteresis.
- Compact Sandwich Plate Design: Integrates directly into existing valve stacks, saving space and reducing piping complexity, installation time, and potential leak points.
- Industrial Reliability: Built for continuous operation under severe industrial conditions, with robust construction and high-quality materials for long service life.
- Direct Fit Replacement: Exact dimensional and functional compatibility with original OEM standards, ensuring drop-in replacement without modification.
- Versatile Adjustment: Mechanical adjustment with locknut allows precise setting and secure locking of the desired pressure value.
Typical Industrial Applications
This pressure reducing valve is commonly used in plastic injection molding machines, metallurgical presses, CNC machine tools, and general industrial hydraulic systems where a reduced, constant secondary pressure is required for pilot circuits, clamping, or actuator control. Its sandwich plate design makes it particularly suitable for manifold-based systems requiring compact, stackable pressure control solutions.
PRODUCT IMAGES
Rexroth ZDR 6 DB3-44/75YM / R900432119 Sandwich Plate Pressure Reducing Valve
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Shop the genuine REXROTH ZDR 6 DB3-44/75YM / R900432119 Pressure Reducing Valve. This Germany-made hydraulic component features a direct-operated, spring-loaded design, delivering leak-free, reliable fluid control for heavy-duty industrial systems.