NST (NH) x NPT Adapter | Insert Barb x Insert Barb Coupling | Reducer Coupling | Spigot Insert Barb Adapter | Swage/Reducing Nipples | Utility Ball Valve | 1-1/2" x 1" | 1-1/2" x 3/4" | 2-1/2" x 3/4" | 3/8" x 1/4"