Pentair
Pentair Rainbow 320 Inline Chlorine/Bromine Tablet Feeder | R171096
Best automatic sanitizer for pool owners seeking effortless water maintenance.
Effortlessly maintain pristine pool and spa water with the Pentair Rainbow Automatic Feeder 320. This in-line unit reliably dispenses chlorine or bromine tablets, ensuring consistent sanitation and reducing the need for manual chemical adjustments. Its robust construction is built for lasting performance, offering a practical and dependable solution for keeping your water clean and inviting. Designed for straightforward installation into your existing pool system, it simplifies achieving optimal water chemistry for a hassle-free experience.
$149.99
Owner Satisfaction
4.5
/ 5
Category Rank
298
/ 1309
#298 in Pool Cleaners & Chemicals
Price vs Category Average
+120%
Above average
Type
Automatic In-Line Chlorine/Bromine Feeder
/ Automatic In-Line Chlorine/Bromine Feeder
Who it's for
- Pool owners seeking a low-maintenance, automated sanitization routine
- Busy homeowners wanting extended intervals between chemical refills
- Precise pool managers needing exact control over chlorine output
Who should skip it
- Novice DIYers uncomfortable with cutting into existing PVC plumbing
- Owners of sensitive downstream equipment like heaters or heat pumps
- Users sensitive to chemical fumes or handling harsh sanitizing tablets
Performance breakdown
Sanitation Consistency
Automated tablet erosion ensures steady chemical levels throughout the filtration cycle.
Installation Simplicity
Straightforward plumbing integration makes for a quick and painless weekend project.
Build Durability
Rugged, chemical-resistant materials withstand years of harsh pool environment exposure.
Maintenance Efficiency
Top-loading design allows for fast tablet refills without breaking the seal.
Flow Control Precision
The external dial offers granular control over chemical output and distribution.
System Compatibility
Versatile design integrates seamlessly into most standard residential pool plumbing setups.
Key Specs
Type
Automatic In-Line Chlorine/Bromine Feeder
Model
Rainbow 320
Part Number
R171096
Compatibility
Pools and Spas
Installation Type
Inline
Pool Type Compatibility
Spa
Features
- Automatic in-line chlorine/bromine feeding
- Ensures consistent water sanitation
- Minimizes manual chemical adjustments
- Durable construction for longevity
- Simple installation and integration
- Ideal for pools and spas
What customers say
This feeder earns high praise for its reliability and superior chemical management. Users value the set it and forget it operation, significantly reducing manual handling of sanitizers. The adjustable control dial is a key feature, enabling precise regulation of output to maintain optimal water chemistry consistently. Once installed, the unit operates flawlessly, delivering dependable sanitation for clear pool water. While installation requires plumbing modification, which can be challenging for some, the long term value is widely accepted. Overall, this robust feeder is highly recommended for its efficiency and enhanced convenience in permanent pool systems.
Know before you buy
Yes, the Rainbow 320 is designed to be compatible with both chlorine and bromine tablets. However, you should never mix different types of chemicals in the feeder at the same time, as this can cause a dangerous chemical reaction.
The unit is designed for straightforward inline installation into your existing plumbing. While many homeowners with basic plumbing knowledge can install it themselves, you should feel comfortable cutting and gluing PVC pipe to ensure a leak-free connection.
The Rainbow 320 is an inline feeder, meaning it is plumbed directly into your pool's return line. This provides a more permanent, integrated setup compared to offline models, which typically use flexible tubing to connect to the plumbing.
The feeder features a built-in control dial that allows you to regulate the water flow through the chamber. By turning the dial, you can increase or decrease the erosion rate of the tablets to maintain your desired sanitizer levels.
Yes, the Rainbow 320 is versatile enough to be used for both swimming pools and spas. Its adjustable flow control makes it easy to dial in the correct chemical output for smaller spa volumes or larger pool systems.
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$150