Yes, even I know that the concentrator is separate from the propane!!!!!
The propane tank will be just on the exterior side of the wall I am working up against. My confusion is mainly about the fittings required for the two separate regulator situations: one being the external fixed 10psi at the tank source, and the other being inside and adjustable. I'm trying to figure out the flashbacks, etc., etc., (whether I need for each regulator), and also the logistics of the adjustable regulator not being attached to the actual tank.
The distance from my tank to my torch will be minimal, since only an exterior wall separates the two. Since I don't want to let the hose drop below the height of the tank, I expect I will need to cut them down, which I guess is no big deal.
Oh boy oh boy oh boy oh boy ....