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

  The 'nipple' is actually a valve stem, so, you could unscrew the
top portion (w/valve stem), pour in fuel, and then replace the
top.  Then, I could attach a pressure-source, open the valve,
wait for pressure to normalize in the tank and then close it.
The fuel tank would then be pressurized.

  The business end pipe/valve is attached to the tank 1/2 of the
way up (other end, when the tank is lying flat).  This leads me to
a leap of logic.  Since the idea is to burn a gasified vapor, the
amount of fuel I use 'must' be lower than the level of the outflow
pipe/valve.  This is to avoid getting fluid fuel into the burner
system (does not sound good).  So if I try it I'll load it maybe
to 1/3 of the way up from the bottom wall of the tank.  Ah, but
at what pressure?  Can't be too much.  And, how clean burning is
Coleman fuel?  Obviously, this is a 'NOT IN THE HOUSE, EVER' burner. 
That said, I'd love to see at least the burner work one time so someone
else down the road can opt to restore it to an oroginal setup. As for me,
propane and a weed-burner head worked well.   

So, I'm glad to hear other thoughts on this.   
Still in one piece,
Wayne