3/4" MPT X 3/4" Perma-Loc fitting with a shutoff valve.
This is a directional ball valve for connecting to 3/4" FPT connection and sending water INTO a 3/4" Poly Tube.Make sure your water direction is water source from the pipe thread side going into the 3/4" poly. If you install the opposite way you will get leakage from the valve portion.