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Apr 08, 2026 - 10:17 AM
We’ve provided several answers to questions related to Pentair Rainbow 300 Automatic Off-Line Chlorine/Bromine Feeder, R171016 , see some other helpful Q&A related to this product.
Question: Is this an off-line or in-line chlorinator?
Answer: This is an off-line chlorinator. The pentair rainbow 300 connects to the pool system with flexible hoses, allowing for greater flexibility in installation location.
Question: Is this chlorinator part of the Rainbow 300 Series?
Answer: Yes, this is part of the 300 Series. The Rainbow 300 Series is known for its reliable, easy-to-use design, making it a trusted choice for automatic chemical feeding.
Question: Does this chlorinator require unions for installation?
Answer: No, the rainbow 300 chlorinator does not require unions for installation. Not needing unions makes the installation process quicker and less expensive.
Question: Does this chlorinator have a check valve?
Answer: Yes, the rainbow 300 chlorinator includes a check valve to protect the pump and heater from back-up of highly chlorinated water. A check valve is important to prevent damage to your pool equipment and ensure safe operation.
Question: Does this chlorinator operate on the pressure side of the pool pump?
Answer: Yes, the rainbow 300 chlorinator operates on the pressure side of the pool pump. Placement on the pressure side improves chemical distribution and protects critical pool equipment from concentrated chemicals.
Question: Is this chlorinator NSF listed?
Answer: Yes, the Rainbow 300 chlorinator is NSF listed. NSF (National Sanitation Foundation) listing ensures the product meets strict public health and safety standards, providing peace of mind for both residential and public pool owners.
Question: Does this chlorinator require venting?
Answer: No, the rainbow 300 chlorinator does not require special venting. The lack of required venting makes installation simpler and reduces installation costs.
Question: Is this a completely enclosed system?
Answer: Yes, the rainbow 300 chlorinator is a completely enclosed system. An enclosed system prevents chemical fumes from escaping, improving safety and reducing odor around the pool area.
Question: Is this chlorinator top loading?
Answer: Yes, it is a top loading rainbow 300 chlorinator. Top loading makes it much easier and safer to add chemicals, reducing spills and direct contact with tablets.
Question: What type of control valve is featured in this chlorinator?
Answer: The rainbow 300 chlorinator features an external fine control valve to adjust the chemical feed rate. This fine control valve allows precise adjustment to meet specific pool or spa requirements, helping to maintain proper water chemistry.
Question: What type of feeder hoses does this chlorinator use?
Answer: The rainbow 300 chlorinator uses 1/4-inch feeder hoses. These hoses are standard size, making installation straightforward and ensuring compatibility with most pool plumbing systems.
Question: What size pools or spas can this chlorinator treat?
Answer: The rainbow 300 chlorinator is designed to treat pools or spas with capacities ranging from 12,000 to 48,000 gallons. This range makes it versatile for both smaller residential pools and larger installations.
Question: How many small tablets can this chlorinator hold?
Answer: The rainbow 300 chlorinator can hold up to 98 small chlorine or bromine tablets. A higher tablet capacity is ideal for those who want consistent chemical dosing over a longer period without frequent attention.
Question: How many large tablets can this chlorinator hold?
Answer: The rainbow 300 chlorinator can hold up to 11 large chlorine or bromine tablets. The ability to hold more tablets means fewer refills, which is convenient for users who want to minimize maintenance.
Question: What is the maximum operating pressure for this chlorinator?
Answer: The maximum operating pressure for the rainbow 300 chlorinator is 50 PSI (pounds per square inch). Operating at this pressure ensures compatibility with most standard pool systems and promotes safe, reliable operation.
Question: What color is this chlorinator?
Answer: The rainbow 300 chlorinator has a clear amber finish. The clear amber color allows users to easily see the tablet level inside, making maintenance easier and reducing the risk of running out of chemicals unexpectedly.
Question: What is the depth of this chlorinator?
Answer: The depth of this pentair rainbow 300 is 12 inches. This depth provides enough room for holding a significant number of tablets, helping to reduce maintenance frequency.
Question: What is the width of this chlorinator?
Answer: The width of the pentair rainbow 300 is 7 inches. A slim width allows for easier installation in tight equipment spaces often found near pools and spas.
Question: What is the height of this chlorinator?
Answer: The height of the pentair rainbow 300 is 21 inches. A taller feeder like this makes it easier to accommodate a larger number of tablets, which is beneficial for longer periods between refills.
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