Pentair Rainbow 300 Off-Line Chlorinator (R171016) – Automatic chlorine dispenser for swimming pool

Simplify your pool maintenance with the Pentair Rainbow 300 offline chlorinator. Designed to automatically distribute slow-dissolving chlorine or bromine, it maintains a constant disinfection level to keep water clean, clear, and safe throughout the season.

Easy to install on existing filtration systems, the Rainbow 300 reduces manual chemical additions and ensures reliable treatment, even during your absences.

Effortless automatic disinfection

The Rainbow 300 gradually releases the disinfectant to maintain a constant concentration in the water.

Benefits

Automatic chlorine or bromine distribution

Maintains clean and balanced water

Reduced manual chemical additions

More stable water quality

Simplified maintenance

A convenient solution to fully enjoy your pool.

Large capacity for less maintenance

Thanks to its large capacity tank, the Rainbow 300 requires less frequent refills.

Capacity

Up to 11 large tablets

Or up to 98 small tablets

Compatible with slow-dissolving trichlor tablets

Compatible with bromine sticks

Extended autonomy that reduces the frequency of interventions.

Simple and quick offline installation

The Rainbow 300 installs on the pressure side of your existing filtration system.

Features

Offline installation

Simple connection to the plumbing system

1/4 inch supply pipes included

Adjustable control valve

Installation fittings included

An ideal solution for new installations or existing systems.

Safe operation

The Rainbow 300 operates in a fully closed system to provide reliable and safe use.

Benefits

No external emissions

No additional ventilation required

Safe operation

Robust design

NSF certification

Peace of mind season after season.

Compatible with large pools

Its large capacity allows effective treatment of large residential pools.

Applications

In-ground pools

Large residential pools

Some commercial installations

Existing filtration systems

Main features

Automatic off-line chlorinator

Compatible with chlorine and bromine

Large capacity

Off-Line installation

Adjustable control valve

Tubes and fittings included

NSF certification

Pentair quality

Technical specifications

Product

Automatic pool chlorinator

Brand

Pentair

Model

Rainbow 300

Type

Off-Line chlorinator

Compatible disinfectants

Slow-dissolving trichlor tablets

Bromine sticks

Capacity

11 large tablets

Or 98 small tablets

Water volume treated

Up to 48,000 gallons

Installation

Off-Line

Maximum pressure

50 PSI

Certification

NSF

Benefits of the Pentair Rainbow 300

Automatic disinfectant distribution

Compatible with chlorine and bromine

Large loading capacity

Reduced manual maintenance

Simple installation

Safe operation

NSF certification

Pentair trusted reliability

Package contents

1 Pentair Rainbow 300 chlorinator

1/4 inch supply tubes

Adjustable control valve

Installation fittings

Product documentation

Automate your pool maintenance

The Pentair Rainbow 300 Off-Line Chlorinator is a reliable and efficient solution to maintain clean and perfectly disinfected water without the hassle of daily manual additions. Its large capacity, simple installation, and safe operation make it an excellent choice for residential pool owners looking to reduce maintenance while enjoying optimal water quality.

Available now at Piscine Hippocampe.