I've been considering buying an either a used Resperonics Everflo or Mellenium or and Invacare oxygen concentrator for my mega/minor burner as my small tank doesn't last as long as I'd like and I am kind of tired of driving to the local AirGas store to refill it every couple of days.
I am not sure what size to buy or how to attach it to the air hose to my torch. Do I need special adapters and do I use my regulator with it as it only produces about 5psi? Any info would be appreciated. Thanks!