I don’t know much about the burner. I picked this stuff up at a garage sale. I had to find stuff to insulate it and put it together. The red hose is air from a compressor, Black is propane. I think the pressure gauge is on the wrong side I am going to try moving it up by the burner. In the pile I purchased was theses scary tubes that I have not used. If I can’t get a high temperature I might try one l just don’t understand what their purpose is. The pictures might help. I don’t know what size hole is up inside the burner.