1" Pitless Adapter, For 4" Lead Free Submersible Installation, Connects Water Pipe To The Side Of The Well Casing Below Frost Level & The 1" Connects To The Pipe Coming Up From Your Submersible Pump, Makes A 90 Degree Elbow Through The Side Of The Well Casing To Discharge The Water Line Under Ground, Top Of The Pitless Half That Connects To The Pump, Has A 1' NPT Threading Into It That Does Not Go Through, This Allows You To Screw A Piece Of Pipe Into It To Lift The Pitless Adapter & The Pump, Up Out Of The Receiver Half To Disconnect, Use With TV #s 123-323, 123-324, 123-325, 123-326, 123-327, 123-328 & 123-332.