Product Overview
The Parker R4R06 591 11 (016-59330-5) is a pilot operated pressure reducing valve engineered to maintain a constant, precisely regulated secondary pressure at the outlet regardless of fluctuations in inlet pressure or changes in flow demand. Part of Parker’s proven R4R series of pressure control valves, this unit utilizes a balanced spool design actuated by a pilot stage, delivering accurate downstream pressure control with minimal hysteresis and excellent repeatability. The valve is designed for inline mounting within industrial hydraulic power units and manifold circuits, where it protects downstream components such as actuators, proportional valves, and instrumentation from over-pressure conditions while ensuring stable operating pressure. The 016-59330-5 designation confirms this as a genuine Parker factory component, ensuring dimensional and functional interchangeability with original equipment.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | Pilot Operated Pressure Reducing Valve (Pressure Control Valve) |
| Model Designation | R4R06 591 11 / 016-59330-5 |
| Manufacturer | Parker Hannifin |
| Nominal Size | NG06 (CETOP 3 / NFPA D03 interface) |
| Operating Pressure | Standard Industrial Grade (up to 350 bar inlet, reduced outlet per setting) |
| Control Principle | Two-stage pilot operated, balanced spool with pilot relief stage |
| Adjustment Type | Manual adjustment via set screw / adjustment knob |
| Mounting & Connection | Subplate / manifold mounting, ISO 4401-03 standard interface |
| Hydraulic Fluid | Mineral oil based hydraulic fluids (HLP / HLVP per DIN 51524) |
| Seal Material | NBR (Buna-N) standard, suitable for standard industrial temperature range |
Engineering Features & Advantages
- Precision Performance: The two-stage pilot operated design maintains a constant reduced outlet pressure with minimal deviation, even under varying inlet pressure and flow conditions, ensuring stable operation of downstream actuators and control elements.
- Balanced Spool Design: The balanced spool minimizes the influence of inlet pressure on the regulated outlet setting, delivering consistent pressure regulation and low hysteresis across the full adjustment range.
- 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 PARKER OEM standards, ensuring drop-in replacement without modification to existing manifolds or piping.
Typical Industrial Applications
The valve is designed for inline mounting within industrial hydraulic power units and manifold circuits, where it protects downstream components such as actuators, proportional valves, and instrumentation from over-pressure conditions while ensuring stable operating pressure.
PRODUCT IMAGES
PARKER R4R06 591 11 / 016-59330-5 Pilot Operated 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 PARKER R4R06 591 11 / 016-59330-5 Solenoid Directional Control Valve. This Germany-made hydraulic component features a robust spool design, delivering leak-free, reliable fluid control for heavy-duty industrial systems.
