What is Fire-tube boiler?
[[File:Locomotive fire tube boiler schematic.png|thumb|Diagram of a fire-tube boiler]] A '''fire-tube boiler''' is a type of [[boiler]] in which hot gases pass from a fire through many tubes. These run through a sealed container of water. The [[heat]] of the gases passes through the walls of the tubes, and this heats the water and creates [[steam]]. Most [[steam locomotive]]s have fire-tube boilers. [[Category:Boilers]] {{transport-stub}}