Pentair Rainbow 320 In-Line Automatic Chlorinator (R171096)

The Pentair Rainbow 320 In-Line Automatic Chlorinator (R171096) provides a dependable, easy-to-use solution for maintaining consistent chlorine or bromine levels in residential pool and spa systems. Designed for in-line installation, this feeder works automatically with your pool’s pump and filtration system to dispense sanitizer as water flows through the unit.

With capacity for 11 large tablets or up to 98 small tablets, the Rainbow 320 helps reduce the need for frequent chemical handling while supporting clean, clear, properly sanitized water. Its adjustable output allows you to control the feed rate based on your pool size, usage, and water conditions.

Built for use with slow-dissolving Trichlor or bromine tablets only, this chlorinator is suitable for a wide range of pool sizes and can treat 6,500 to 27,000 gallons with bottom feed or 8,000 to 70,000 gallons with top feed.