3133B Chemical Feeders — 2025 California Building Code

All chemical feeders including disinfectant feeders and the auxiliary feeders used for solutions, slurries or solids, along with components such as pumps, strainers, tubing connections, tanks and injection fittings shall comply with the provisions of this section.

The chemical feeder equipment shall: 1. Be maintained and repaired according to manufacturers’ specifications; and 2. Be constructed with an adjustable output rate device to permit repeated adjustments without loss of output rate accuracy and adjusted by an automatic chemical monitoring and control system that regulates, at a minimum, pH and disinfectant; and 3. Meet the applicable requirements established by the NSF/ANSI 50-2012 performance standard effective September 2012.

Piping used for the chemical feeder and its auxiliary equipment shall be resistant to corrosion or chemical deterioration.

Chemical feeders and associated components shall be constructed and installed to prevent uncontrolled discharge or siphoning of chemicals and fumes directly into the pool, its recirculation system, the pool area or ancillary facilities.