CLX220EA | Hayward CL-Series Check Valve with Inlet Fitting Adapter

The Hayward CLX220EA is an OEM check valve and inlet fitting adapter assembly for Hayward's CL-Series offline chlorine and bromine feeders. This two-component assembly performs two essential functions: the inlet fitting adapter connects the water supply line to the chlorinator's inlet port, and the built-in ball check valve prevents concentrated chlorinated water from backflowing into pool equipment — particularly heaters and heat exchangers — when the pump shuts off. Without a properly functioning check valve, highly concentrated chlorine can flow back through the plumbing during pump-off cycles, causing severe corrosion damage to heat exchangers and other sensitive pool equipment over time. Compatible with Hayward chlorinator models CL100, CL110, CL110BR, CL200, CL220, and CL220BR, the CLX220EA is a small but critical component that protects some of the most expensive equipment in any pool system.

Highlights

• Factory-Authorized Hayward OEM Assembly: Manufactured by Hayward to exact OEM specifications, the CLX220EA check valve and inlet fitting adapter assembly integrates properly with CL100, CL110, CL110BR, CL200, CL220, and CL220BR offline chlorinator and brominator models, providing the precise fit and sealing performance required at a pressurized chemical injection point.
• Stops Concentrated Chemical Backflow: The internal ball check valve closes automatically when the circulation pump shuts off, blocking highly concentrated chlorinated or brominated water from flowing backward through the plumbing and protecting downstream heaters, heat exchangers, and other pool equipment from severe chemical corrosion damage over time.
• Inexpensive Heater and Equipment Protection: A failed or degraded check valve is one of the most overlooked contributors to premature heat exchanger corrosion, and replacing a worn CLX220EA is a low-cost investment that helps extend the service life of significantly more expensive downstream pool equipment like gas heaters and heat pumps.
• Complete Adapter Assembly: The CLX220EA includes the check valve, inlet fitting adapter, and compression nut all in one package, providing everything needed for a complete, leak-free replacement of the chlorinator's inlet connection without sourcing additional components separately from multiple suppliers.
• Wide CL-Series Coverage: Fits Hayward's most widely installed offline chlorine and bromine feeders — including the CL100, CL110, CL110BR, CL200, CL220, and CL220BR — making the CLX220EA one of the most universally needed replacement parts in the Hayward chlorinator parts catalog for residential pool service work.