Balboa Wavezone Ozone Injector Kit [3/4" Barb] (54900) gptools A weir like this is

A weir like this is useful because it restores the moving skimmer door that helps regulate surface water entry into the skimmer body

readable control face and gives the topside a fresher finished appearance overall

Check valves are useful because they help maintain one-way flow and reduce the risk of unwanted reverse movement through the line

For compatible pool recreation repairs

Balboa Wavezone Ozone Injector Kit [3/4" Barb] (54900) gptools A weir like this isThe Balboa Wavezone ozone injector kit is designed for compatible ozone system applications where ozone needs to be introduced into the water flow. An injector kit is useful because it helps draw and deliver ozone into the circulation line, supporting more complete water treatment within a compatible sanitation setup. This replacement is especially useful when the original injector is clogged, damaged, leaking, or no longer pulling ozone correctly.