Pentair R171096 Rainbow 320 Automatic in-Line Chlorine/Bromine Feeder
Best for: Budget-conscious pool owners seeking a reliable, brand-name inline feeder that integrates well into standard plumbing configurations.
The Pentair R171096 Rainbow 320 is a widely recognized automatic swimming pool chemical feeder known for its efficient design and reliable performance. This inline model is a staple for pool owners who prioritize brand consistency and a proven, straightforward method for dispensing chlorine or bromine into their filtration systems.
Designed for integration directly into the return plumbing, the Rainbow 320 utilizes a precise control valve to manage chemical output. This allows for a more tailored approach to water treatment, ensuring that your pool receives the correct amount of sanitizer based on your specific needs. Buyers should verify that their plumbing diameter matches the input requirements of this feeder to avoid flow restrictions. As with any inline chemical system, the effectiveness depends heavily on the consistency of your pool pump operation. Proper installation is critical to prevent leaks, so ensure your setup allows for easy access to the lid for refilling tablets throughout the swimming season.
Practical fit
The Rainbow 320 is designed to fit into existing PVC plumbing, making it a common choice for both new installations and retrofits. Before purchasing, you must measure your return line to ensure it can accommodate the feeder's dimensions. It is also important to consider the orientation of your pipes, as the unit requires a specific installation angle to function correctly. If your equipment pad is cramped, verify that you have enough vertical clearance to open the lid and add tablets without obstruction. Checking your pump's flow rate against the manufacturer's recommended range is essential for achieving optimal chemical distribution.
Tradeoffs and ownership
Choosing an inline feeder like the Rainbow 320 means accepting the necessity of regular maintenance to keep the control valve functioning smoothly. Over time, mineral buildup can affect the dial's precision, so owners should be prepared to clean the internal components periodically. While it offers an efficient way to manage chemical levels, it is not a set-it-and-forget-it solution; you must continue to test your water frequently. If you are not comfortable with cutting into your plumbing, you should confirm if a professional installation is required or if you have the necessary tools to handle the job yourself.
Pros
- Efficient chemical distribution
- Trusted industry brand
- Adjustable control valve
- Durable construction materials
- Compact inline footprint
Cons
- Requires plumbing modification
- Valve can clog over time
- Needs regular water testing
- Budget
- Pentair
- Chlorine
- Efficient