I bought a flexible gas line at a garage sale. The ends look like they mate with flare fittings, is that correct? I had a T and a valve put in when I got a new furnace installed last year; but running the line to where the heater would go was very tight, so I never got around to it. A flexible line should make it pretty easy. Yeah, I know they are not particulary safe, but I will be careful. (and with a little luck, it will never actually be used.)
---------------------------------- those lines are usually flare fittings. there is a concern to be sure to use a flexable line that has the coating on it.it looks like a grey plastic covering . lucas