Vikua Upgraded 320 Pool Chlorinator Inline Feeder — Compatible with Pentair Rainbow 320, Adjustable

The Vikua Upgraded 320 Pool Chlorinator is an inline automatic feeder that safely meters chlorine or bromine tablets to maintain cleaner pool and spa water with minimal hands-on maintenance.

Designed as a drop-in replacement compatible with Pentair Rainbow 320 (R171096) style feeders, this Vikua unit is built from thickened ABS for corrosion resistance and longer service life. It accepts both large and small sanitation tablets, provides adjustable feed control, and includes improved sealing and drainage features to reduce leaks and simplify seasonal servicing. The following sections explain how it works, how to install and maintain it, and who will benefit most from choosing this feeder.

How does the Vikua 320 chlorinator feed chlorine or bromine into my pool?

The feeder uses a closed-circuit design that circulates pool water through the chamber where tablets dissolve, delivering a regulated concentration back to the pool. You select tablet size and set the control valve to match your pool volume and desired sanitizer output.

• Accepts 11 large or up to 98 small tablets to suit different dosing needs.
• Top-feed or bottom-feed compatibility for systems serving 6,500–70,000 gallon pools (depending on feed type).
• 1/4-inch feed hose routes processed water back into the pool plumbing for even distribution.
• Adjustable control valve to fine-tune flow and sanitizer release rate.

What improvements does Vikua add over older Rainbow 320-style feeders?

Vikua focuses on durability and ease of service: the barrel walls are thickened for oxidation resistance, the cover gasket is upgraded to reduce leaks, and drainage and venting have been redesigned. These changes reduce routine maintenance and make the unit simpler to winterize or clean.

• Internal thickened gasket in the cover for improved sealing and leak prevention.
• Top vent plug releases gas from tablet reactions and allows safe pressure relief.
• Upgraded drainage method for quick, clean emptying of remaining liquid.
• Lubricant and accessories included to maintain cover and valve seals.

How do I install and care for this chlorinator to keep it working reliably?

Installation follows standard inline-feeder practices: connect the feeder into the return line, attach the 1/4-inch feed hose, and set the control valve to begin metering sanitizer. Regular cleaning, lubrication, and inspection of seals will minimize blockages and prolong service life.

• Lubricate the cover and control valve as provided to maintain seal integrity.
• Flush feed hose and interior weekly with clean water to prevent buildup and corrosion.
• Use the bottom drain to remove residual liquids before servicing or storage.
• Keep the vent plug clear to avoid pressure buildup during tablet dissolution.

Which pool systems and sizes work best with this feeder?

The Vikua 320 is compatible with many Pentair Rainbow 320-style systems and fits most residential and commercial return plumbing that accepts inline feeders. It handles a broad range of pool capacities depending on top or bottom feed configurations, so it suits small backyard pools up to large public or hotel pools when properly sized.

• Bottom feed: suitable for pools roughly 6,500–27,000 gallons.
• Top feed: suitable for larger systems from about 18,000–70,000 gallons.
• Works with chlorine or bromine tablet chemistries—choose tablet size and valve settings accordingly.
• Compatible with existing Pentair Rainbow 320 (R171096) plumbing and housings.

Who is this for: pool owners and service professionals who want a dependable, easy-to-maintain inline feeder that fits Rainbow 320-style systems and offers upgraded sealing, simplified drainage, and clear maintenance steps. If you need a replacement feeder for regular sanitizer dosing with minimal daily oversight—especially where durability and leak control matter—this Vikua unit is designed to meet those needs.