Find your parts diagram
Sticker on the pump body (the part with the basket), not on the motor. Motor labels from Century, A.O. Smith or Regal won't match parts.
Label on the side of the tank near the base. Size is in sq ft, e.g. 420 sq ft = C4030 or CCP420.
Rating plate inside the front access panel. Note the BTU and gas type (NG or LP).
Molded into the body or printed on top. Robotic cleaners: on the power supply.
Still not sure? Call (818) 818-6559 and we'll find it for you.
Pentair Elbow Check Valve R172061 is a replacement component designed to work with Rainbow 300 series automatic chemical feeders in residential pool and spa systems. It combines the function of an elbow and a check valve to help manage flow direction and block unwanted backflow. This helps ensure your chlorinator system delivers chemicals consistently. Made from chemical-resistant materials, it fits models 300, 302, 300-19, and 300-29 and supports smooth feeder performance with reliable long-term use.
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Check Valve with Elbow Function: Combines two components to ensure proper directional flow and prevent reverse movement of water
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Works with Rainbow Models: Fits Pentair 300, 302, 300-19, and 300-29 chlorinator systems for quick replacement
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Engineered for Durability: Made from sturdy materials to hold up under chemical exposure and pool system pressures
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Perfect for Residential Setups: Designed to keep water balanced and feeders running efficiently in pool and spa systems
- (1) Pentair R172061 Elbow Check
- Pentair Automatic Chemical Feeder 300
- Pentair Automatic Chemical Feeder 302
- Pentair Automatic Chemical Feeder 300-19
- Pentair Automatic Chemical Feeder 300-29

