Thanks for the complements everyone.
@bendavanza There on the end of the tube there is a end cap with a temp probe threaded in. The tee fitting is the input side, I just have not welded in the output fitting fro the tube yet. In total there are five temp probes, two for the RIMS, and one per kettle.
@cascadia Got the valves off eBay, first four were super cheap, last two were spendy.
@bendavanza going gas BK for now. Eventually would like to upgrade and put another 2" ferrule on the bottom and make it full electric.