Propane burner

Propane is sometimes referred to as "the gentleman's fuel" because of its clean burning nature.

Al VonRueden Burners

 * Drawing for Al VonRueden's Orifice Mixing Head
 * Propane Burner Calculation Notes by Al VonRueden
 * Drawing for 0-4-0 Propane Burner by Al VonRueden

Turbolator
A turbolator is a thin metal strip of metal inserted into the boiler flues. Its purpose is to break up the hot center core of the gas that flows in the tube, thus moving more heat from the gas to the water in the boiler. Turbolators are most often used in propane fired boilers.

See "To Turbolize or not", Chaski.org