Waterway In-Ground V/L Skimmer Square Collar (519-9517) valterraproducts When an output-level relay board

When an output-level relay board begins to fail

and LH-related operation

This replacement is especially useful when the original adapter is missing

Replacing worn or outdated components with properly engineered parts helps restore efficiency

Waterway In-Ground V/L Skimmer Square Collar (519-9517) valterraproducts When an output-level relay boardThe Waterway 519 9517 square collar is designed for compatible in ground vinyl liner skimmer applications. A collar like this is useful because it helps restore the mounting and finishing structure around the skimmer opening, supporting cleaner fit and installation alignment. Version specific skimmer collars matter because in ground vinyl liner systems depend on the correct shape and mounting style. This Waterway square collar is a practical