If you want a simple inline stainless tube, I could easily figure that out for you. I have a friend with a machine shop and I weld. How big do you want it to be?
Discussion
Needs to be threaded. I will think it through and if I can't get it made locally I will get back to you, thanks.
Yup. A threaded cap with a 1/2" or 3/4" NPT fitting welded to it and another on the other side.