Is there a tee type copper fitting that allows a temp gauge to be threaded ( 1/2" or 3/4' ) into the top of it. I want to put a gauge right in front of or right behing my 1 1/4" inch ball valves on inlets and outlets going into the pressurized tanks. I currently have a reducing bushing to a copper nipple and will switch to copper know. My ball valve are 1 1/4" sweat. I assume I will have to install a short piece of copper than ball valve then a tee with a gauge or is this wrong?