Description
The Finishing Step for Your Reverse Osmosis System
Reverse osmosis is designed to reduce contaminants from drinking water. The Natural Action HD-9-RO is designed to work after that filtration process, adding Natural Action’s vortex-inspired water structuring technology before the water reaches your drinking faucet.
The unit installs inline between the RO storage tank and faucet and operates passively whenever water flows through it.
There is no electricity, no battery, no replacement filter and no routine maintenance required. Nothing is added to or removed from the water by the HD-9-RO.
FILTERED FIRST. STRUCTURED SECOND.
The placement of this product is what makes it different from the regular HD-9:
RO System → RO Storage Tank → Natural Action HD-9-RO → Drinking Faucet
This allows the reverse osmosis system to perform the filtration, followed by the Natural Action unit as a post-filtration water-structuring step.
KEY FEATURES
• Specifically designed for reverse osmosis systems
• Installs after the RO tank
• Installs before the drinking faucet
• Standard ¼ or 3/8-inch RO tubing connections
• No electricity or batteries
• No replacement filters or cartridges
• No additives
• No routine maintenance
• Can be used for drinking water, coffee, tea, cooking and ice
• Made in the USA
• 10-year limited manufacturer warranty
• 90-day satisfaction guarantee
WHAT’S INCLUDED
• Natural Action Post RO Structured Water Unit
• ¼-inch quick-connect ports
• 3 feet of ¼-inch tubing
• Mounting bracket
SPECIFICATIONS
| Specification | Details |
|---|---|
| Manufacturer | Natural Action |
| Model / SKU | HD-9-RO |
| Dimensions | 12″ × 2.72″ |
| Weight | Approx. 3 lbs |
| Connection | Standard ¼” RO tubing |
| Installation | Inline under sink |
| Placement | After RO tank, before faucet |
| Electricity | None |
| Replacement Filters | None |
| Routine Maintenance | None |
| Warranty | 10-year limited warranty |
| Guarantee | 90-day satisfaction guarantee |
INSTALLATION
The HD-9-RO uses standard ¼-inch quick-connect fittings.
Install the unit inline after the RO storage tank and before the RO drinking faucet. Push the ¼-inch tubing securely into the quick-connect ports, restore the water supply and carefully inspect all connections for leaks.
NEED PROFESSIONAL INSTALLATION?
Infinite Acqua Solutions offers professional RO and water-treatment installation in select Southern California service areas. Contact us to verify availability in your area.
IMPORTANT: THIS DOES NOT REPLACE YOUR RO SYSTEM
The HD-9-RO is not a water filter and does not remove contaminants. It is designed to be installed after a reverse osmosis system.
Your RO system performs the filtration. The HD-9-RO is a separate post-filtration water-structuring device.
CARE & MAINTENANCE
There are no filters or cartridges to replace and no routine maintenance is required for the Revitalizer itself. Periodically check the tubing and connections as part of normal under-sink maintenance.
WARRANTY & GUARANTEE
10-Year Limited Manufacturer Warranty
Natural Action currently backs the HD-9-RO with a 10-year limited warranty.
90-Day Satisfaction Guarantee
Natural Action also offers a 90-day satisfaction guarantee, subject to its applicable terms and conditions.





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