I use a quick change connector on an outdated 20# propane tank. They're
readilly available free around here and they're rated for more pressure
so give a bigger safety margin. BRBR

Ted, did you remove the orriginal propane valve and then install the quick
change connector, or did you find some way to connect to the left hand thread
of the tank? or use an old camp stove hose and put the quick connect to that?
I have a couple of the old cans around that I would like to convert too