Hello,
I built myself a venturi burner for a small heat treating forge and after many online readings, I was able to make a starter propane forge. I took a lot of precaution to make sure that there is no leak (gasline teflon + soapy water test multiple times) and everything seems good.
However, since I am using a highly flammable gas, I want to learn as much of the process before firing the propane burner for a first heat treatment cycle for safety reasons. One subject that I haven't found about is how the burner should normally behave when I cut off the gas.
So my question is: when I shut off the gas, what should happen to the flame? As I reduce the psi of the gas output or as I close the main valve on the propane tank, will the flame "burst out" (not sure what the term is)? Also if I reduce the psi to almost 0, what should happen to the flame? will it go back to my nozzle or should it fizz out before that?
I hope that I gave enough details to get answers, but if not, let me know.
Thanks.