Product Overview
The PARKER R4R06-59311P1G0QB110 (also referenced as 016-95333-0) is a pilot operated pressure reducing valve from Parker’s R4R series of industrial hydraulic pressure control valves. This valve is designed to maintain a constant, reduced outlet pressure regardless of fluctuations in inlet pressure or changes in flow demand, making it essential for circuits requiring a stable secondary pressure lower than the main system pressure. The pilot operated design utilizes a pilot stage to sense downstream pressure and modulate the main spool, delivering precise pressure regulation with minimal hysteresis and excellent repeatability. With a 06 size (NG06 / CETOP 3) interface, this valve is suited for manifold or subplate mounting in demanding industrial hydraulic systems.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | Pilot Operated Pressure Reducing Valve |
| Model Designation | R4R06-59311P1G0QB110 / 016-95333-0 |
| Manufacturer | Parker Hannifin |
| Valve Size | NG06 / CETOP 3 (Size 06) |
| Operating Pressure | Up to 350 bar (inlet); reduced outlet per adjustment range |
| Pressure Adjustment | Adjustable via pilot stage; multiple spring ranges available |
| Mounting & Connection | Subplate / Manifold mounting per ISO 4401 / CETOP 3 interface |
| Seal Type | NBR (Buna-N) standard; FKM available on request |
Engineering Features & Advantages
- Precision Pressure Regulation: The pilot operated spool design maintains a constant reduced outlet pressure with minimal deviation, even under varying inlet pressure and flow conditions.
- Low Hysteresis & High Repeatability: Precision-machined spool and sleeve assembly ensures consistent performance across repeated cycles, critical for sensitive downstream actuators.
- Industrial Reliability: Built for continuous operation under severe industrial conditions, with robust construction resistant to contamination and pressure spikes.
- Direct Fit Replacement: Exact dimensional and functional compatibility with original OEM standards, ensuring drop-in replacement without modification.
- Versatile Circuit Integration: Suitable for both fixed and variable displacement pump systems, protecting downstream components from overpressure.
Typical Industrial Applications
This pilot operated pressure reducing valve is commonly used in plastic injection molding machines, metallurgical presses, CNC machine tools, and general industrial hydraulic power units where precise secondary pressure control is required. It is also found in marine and offshore hydraulic systems, test stands, and any application demanding reliable, repeatable pressure reduction with minimal drift.
PRODUCT IMAGES



PARKER R4R06-59311P1G0QB110 / 016-95333-0 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 R4R06-59311P1G0QB110 / 016-95333-0 Solenoid Operated Directional Control Valve. This US-made hydraulic component features a reliable spool-type design, delivering leak-free, reliable fluid control for heavy-duty industrial systems.





