Hayward S311SX Top Elbow Assy w/Diffuser (SX311CD1FWS) airbuttons Reference part number K11 when

Reference part number K11 when matching to your existing component

This kind of replacement is especially useful when the trap housing remains serviceable and the weakness is isolated to the basket

A shaft like this is useful because it connects the operating handle movement to the internal diverter function

Helps restore proper water movement through the pump

Hayward S311SX Top Elbow Assy w/Diffuser (SX311CD1FWS) airbuttons Reference part number K11 whenThe top elbow and diffuser assembly helps guide incoming water into the sand filter tank so it can spread across the media bed instead of channeling in one concentrated area. This Hayward replacement assembly is designed for compatible S311SX sand filters. A cracked elbow, missing diffuser, or worn internal connection can reduce filtration quality and put stress on other components. Replacing the assembly helps preserve proper flow distribution and