Waterway 1" Notched Air Control [1-5/8" HS, 2-3/4" FD] [Grey] (660-3577) chlorinegenerators and this Filbur FC-2710 cartridge

and this Filbur FC-2710 cartridge is designed for C-4440 and PSD40 applications

Amp-style pin extraction tool from Jonard Industries

and this Jacuzzi DVK7 Valve Cover is designed for compatible applications where the original cover has cracked

or no longer sitting correctly after years of heating cycles

The 009577F is a practical service part when a compatible Raypak heater needs a temperature sensor to restore dependable thermal monitoring

Waterway 1" Notched Air Control [1-5/8" HS, 2-3/4" FD] [Grey] (660-3577) chlorinegenerators and this Filbur FC-2710 cartridgeThe Waterway 660 3577 notched air control is designed for compatible spa air systems and uses a 1 5 8 inch hole size with a 2 3 4 inch face diameter in grey. This type of control helps regulate the air introduced into the spa system, which can influence how the jets feel and how the overall hydrotherapy experience is tuned. The grey finish makes it a strong match for spas with cooler toned shells or trim, and the notched design supports compatibility