Pentair R171096 Rainbow 320 Automatic in-Line Chlorine/Bromine Feeder
Best for: Budget-conscious pool owners who need a reliable, mechanical chemical feeder that supports both chlorine and bromine tablets.
The Pentair R171096 Rainbow 320 is a widely recognized choice for those prioritizing reliability and budget-conscious maintenance. As an inline feeder, it provides a consistent method for introducing chlorine or bromine into the pool, helping to stabilize chemistry levels without the high costs associated with more complex or automated electronic sanitization systems.
The Rainbow 320 stands out as a staple in pool maintenance due to its straightforward mechanical design. It is built to be installed directly into the return line, allowing for a steady, controlled release of chemicals. Because it accommodates both chlorine and bromine, it offers versatility for different pool types and personal preferences. Buyers should verify the specific space constraints of their equipment pad, as inline feeders require a dedicated section of piping. This device is ideal for users who prefer a mechanical, non-electronic solution that does not rely on sophisticated sensors or power sources, focusing instead on the physics of water flow to maintain proper sanitation levels.
Practical fit
Installing the Rainbow 320 requires a moderate level of plumbing proficiency, as it must be integrated into the return line after the heater or other equipment. The unit is designed to be compact, making it a good fit for crowded equipment pads where space is at a premium. Before finalizing the installation, verify that the flow direction aligns with your existing plumbing layout. Ensure that the feeder is placed at the end of the return line to prevent concentrated chemicals from damaging other components like heaters or pool cleaners. Regular inspection of the internal check valve is recommended.
Tradeoffs and ownership
The primary ownership tradeoff with this model is the need for manual monitoring of the chemical levels. While it is highly reliable, it does not alert you when tablets have fully dissolved, necessitating periodic checks of the feeder chamber. Users should also be mindful of the corrosive nature of the chemicals used; always follow safety protocols when opening the lid to refill tablets. Over time, the control valve may become stiff due to mineral deposits, so keeping the threads clean and lubricated according to the manufacturer's guidelines will extend the functional lifespan of the unit significantly.
Pros
- Supports chlorine or bromine
- Compact space-saving design
- Reliable mechanical operation
- Simple flow control dial
- Trusted industry brand
Cons
- Requires manual tablet monitoring
- Valve can get stiff
- Installation requires plumbing
- Budget
- In-line
- Bromine
- Reliable