What to do with steam line?

[MDPotter]

I had done some research months ago on how to deal with the steam line on my engine but I'm not sure if my plan will work. I don't plan on buying a radiator that has the steam inlet and would rather not have one welded in because it will probably void the warranty. I don't quite understand what happens with the steam lines either. I bought the Dorman 47112 tee so I can tap into a heater hose line, but won't that allow hot coolant to run into the steam line? If so, is that an issue? If it's not an issue, should I tee into the return line?

I have always had this idea that the steam line was basically a vent and that it didn't have coolant running through it so it needed to have a clear outlet such as just beneath the cap on the radiator tank.