Rainbow Cap Chlorinator Cap | Pentair | R172008W | (Fits Rainbow Cap Chlorination System)

Pentair Rainbow Cap Chlorinator, White | R172008W helps tackle algae, cloudy water, metals, and scale in residential pools. This replacement cap works with your existing Rainbow Cap chlorination system, enabling targeted chlorine dosing based on your water test results to keep chemistry balanced and water inviting. With its bright white finish, it blends into standard pool equipment while staying easy to inspect during routine maintenance.

Ideal for meticulous pool owners and service pros who test regularly, this component offers precise control where problems start. It supports algae control, improves water clarity, and minimizes metal staining and scale formation by delivering sanitizer where it's most needed. In practice, you’ll notice crisper water, easier filtration, and less time spent balancing chemicals between test cycles.

• Targeted chlorine delivery when algae or cloudiness appear in your pool.
• Supports algae control and clearer, more inviting water.
• Reduces metal staining and minimizes scale buildup over time.
• Seamless replacement compatible with the Rainbow Cap system.
• Simple check-and-replace maintenance to keep your chlorination running.

Add to your cart to simplify pool care and enjoy clearer water season after season.