Office of Steam Forum for Model & Toy Steam Gas & Hot Air Engines

I would be a bit leary of the "rubber" hose connection to the copper piping at the burner end. There will most certainly be some heat transferred there, and depending on tubing type, there will likely be some swelling of the hose, which may then lose its grip on the copper pipe and become a flame-thrower whipping around from the gas pressure. Perhaps some wire wrap as a hose clamp would effectively remove that possibility.