Oroy54; A very long time ago I used mapp gas and you had to shut off at the tank in cold weather. If you shut off at the tip handle the mapp gas would liquify in the hose, then you would get flaming globs of liquid mapp. Sometimes coming a little to close to my naugty bits. I changed back to acetylene and still have my naughty bits.
"Nothing else can poison our culture, corrupt our society or ruin the character of our people like unearned money or unearned opportunity." -- James R. Cook
"Fooling around with alternating current is just a waste of time. Nobody will use it, ever." Thomas Edison, 1889.