The Pentair Rainbow HC-3315 Commercial Chlorine/Bromine Feeder is a heavy-duty, high-capacity automatic sanitization system designed for large residential and commercial swimming pools. Engineered to deliver consistent and controlled sanitizer dosing, the HC-3315 uses slow-dissolving chlorine or bromine tablets to maintain stable water chemistry with minimal manual intervention. Featuring a completely enclosed system, precise external control valve, and easy-access design, this feeder provides reliable, safe, and efficient sanitation for pools requiring professional-grade performance.

Key Features

• High-capacity feeder holds up to 15 pounds of slow-dissolving chlorine or bromine tablets for extended operation
• Designed for large residential and commercial pools with automatic, controlled sanitizer delivery
• Heavy-duty external control valve allows accurate feed rate adjustment
• Completely enclosed system prevents chemical fumes from escaping and requires no special venting
• Flow-through circulation design ensures maximum output of sanitized water
• Easy-access lid with locking ring enables quick recharging and routine servicing
• Standard threaded inlet and outlet fittings included for straightforward installation
• Built-in drain valve simplifies winterization and safer reloading
• Designed for off-line plumbing installation using 1-inch PVC piping
• Compatible with chlorine or bromine tablets only; calcium hypochlorite is not permitted

Product Overview

The Pentair Rainbow HC-3315 Chlorine/Bromine Feeder is engineered to simplify sanitation for large pool systems while maintaining precise control over chemical delivery. By automatically dispensing sanitizer tablets into the circulation system, the HC-3315 reduces daily maintenance and helps ensure consistent water quality across high-volume pools.

Its rugged construction, enclosed design, and service-friendly layout make it a trusted solution for commercial facilities, multi-family properties, and large residential pools. With support for chlorine or bromine sanitization and a compact vertical footprint, the HC-3315 integrates easily into existing equipment pads while delivering dependable, professional-grade performance. Built by Pentair for long-term reliability, this feeder is an efficient and safe choice for automatic pool sanitation at scale.