A 3-way valve is incredibly useful for merging two lines into a single line, while providing the ability to regulate the flow from each of those two lines. For example, if you were to tie your bottom drain and skimmer together using a 3-way valve, you’d be able to regulate how much flow comes from each source. Simply rotate the handle, and you can go from pulling 50% on each line to 25% on your skimmer line and 75% on your bottom drain, to anywhere in between. Works with 2″ PVC on the inside or 2.5″ PVC coupling on the outside.
2″ 3-Way Valve