The Waterway 417-5020 union tailpiece is designed for compatible plumbing applications using a 2 inch flange connection with a tailpiece configured for 2 inch spigot or 1-1/2 inch slip integration. This kind of flexibility is useful where the downstream plumbing layout may require one of two connection approaches without sacrificing the serviceable union format.That makes this Waterway tailpiece especially practical for retrofit and replacement work where plumbing configurations can vary from one installation to another. Using the correct dual-format tailpiece helps reduce extra transitions and keeps the layout cleaner.For compatible plumbing service and rebuild work, this Waterway tailpiece is a practical option when a 2 inch flange union needs adaptable downstream compatibility. Waterway union tailpiece 2 inch flange with 2 inch spigot or 1-1/2 inch slip compatibility Useful for flexible retrofit plumbing transitions Helps reduce extra fittings in the layout Supports cleaner and more adaptable union service