Pentair 6" Complete Chlorine and Bromine Dispenser

The Pentair 6" Complete Chlorine and Bromine Dispenser (primarily associated with the commercial Rainbow™ 300 or inline 320 series high-capacity extension architectures) is a heavy-duty chemical sanitization canister engineered exclusively for automatic inline or offline pool and spa water treatment. This professional-grade chemical feeder is standard hardware designed to streamline sanitation delivery by holding a vertical stack of slow-dissolving 1-inch or 3-inch trichlor chlorine or bromine tablets, establishing a safe, metered dosing schedule for residential and commercial aquatic facilities.

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Injection-molded from thick-walled, high-impact, and UV-stabilized amber or clear fluorocarbon plastic, the 6-inch assembly incorporates a heavy-duty top access cap with a locking mechanism, a high-density viton sealing O-ring, and a bottom plumbing base featuring an integrated control dial valve. Its primary operational role is to act as an isolated, pressurized chemical dissolution chamber within the return plumbing line. As water is pushed back toward the pool from the filtration system, a portion of the high-velocity stream is diverted through the feeder's intake. The external dial control valve regulates the exact volume of water entering the chamber, controlling how quickly the chemical tablets erode to maintain a consistent chlorine or bromine residual between 1.0 and 3.0 PPM. This automated chemical delivery eliminates manual skimmer dosing—which can damage pool pumps—and safely contains corrosive chemical vapors under continuous system operating pressures up to 50 PSI without weeping, leaking at the threaded joints, or cracking under sudden pump startup surges.

Built to survive decades of harsh outdoor equipment pad weathering, direct sunlight exposure, and constant contact with highly concentrated acidic oxidizers, its premium resin composite completely resists structural warping, environmental stress-cracking, and advanced chemical bleaching. Due to its thick-walled cylindrical body, heavy-threaded closure cap, and integrated internal control plumbing hardware, this complete replacement chlorine and bromine dispenser assembly carries a net product and shipping weight of approximately 2.50 to 3.00 pounds (about 40.0 to 48.0 ounces).