I did a quick search at Sid Harvey and didn't find anything. As for Homgas, not sure if that is the correct spelling or if it is Home Gas. It was quite a few years ago that I did that work and part of my job was to swap out 100 lb tanks at a place called Homgas. Not sure if it was a local company or a franchise of a larger corporation. Another supplier of
propane equipment is ray murray, but again I don't know if they sell retail.