Add to Cart Quick view SALE Balboa Water Group Diverter Valve, Hydro-Air/BWG Hydroflow, 2"s, 3 Port, Gray $51.95 $26.95 HydroAir "Hydroflow" 3-Way ValveAvailable in 2" and 1" sizes topside mounted easy to turn, allows for zoning to banks of jets and permits variable flow to different areas.Hole size for 2" valve is 3-3/16". Hole size for 1" valve is 2-1/16" Add to Cart Add to Wishlist