Product Overview
The Rexroth ZDR 6 DB2-43/75YM is a direct-operated, three-way pressure reducing valve designed for precise pressure regulation in industrial hydraulic systems. Manufactured by Bosch Rexroth, this valve maintains a constant reduced outlet pressure regardless of fluctuations in the primary system pressure or changes in flow demand. The ZDR 6 series features a spool-type design with a pressure reducing function and a pressure relief function, allowing excess downstream pressure to be vented back to the tank. With a nominal size of 6 (NG6 / CETOP 3 / ISO 4401-03), this valve is engineered for subplate mounting and delivers reliable, repeatable pressure control in demanding B2B hydraulic circuits. The “75YM” designation indicates a pressure adjustment range up to 75 bar with a specific adjustment mechanism, making it suitable for applications requiring moderate pressure reduction with high accuracy.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | Pressure Reducing Valve (Three-Way, Direct-Operated) |
| Model Designation | ZDR 6 DB2-43/75YM / 00431771 |
| Nominal Size | NG6 (CETOP 3 / ISO 4401-03) |
| Pressure Adjustment Range | Up to 75 bar (reduced pressure setting) |
| Maximum Operating Pressure | Up to 210 bar (primary / inlet pressure) |
| Maximum Flow Rate | Up to 60 L/min (dependent on circuit configuration) |
| Mounting & Connection | Subplate mounting per ISO 4401-03 / CETOP 3 |
| Adjustment Type | Manual adjustment (spindle with locknut) |
| Hydraulic Fluid | Mineral oil based hydraulic fluids (HL, HLP per DIN 51524) |
| Seal Material | NBR (standard); FKM available on request |
Engineering Features & Advantages
- Precision Pressure Regulation: The three-way spool design maintains a constant reduced outlet pressure with minimal hysteresis and excellent repeatability, even under varying flow conditions.
- Integrated Pressure Relief Function: In addition to pressure reduction, the valve provides a relief function that protects downstream components from excessive pressure spikes by venting to the tank port.
- 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
The “75YM” designation indicates a pressure adjustment range up to 75 bar with a specific adjustment mechanism, making it suitable for applications requiring moderate pressure reduction with high accuracy.
PRODUCT IMAGES
REXROTH ZDR 6 DB2-43/75YM / 00431771 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 ZDR 6 DB2-43/75YM / 00431771 Pressure Relief Valve. This Germany-made hydraulic component features a direct-acting poppet design, delivering leak-free, reliable fluid control for heavy-duty industrial systems.
