A vertical boiler is a relatively simple type that takes up little space.

The vertical boiler had a safety valve on top.

Several manufacturers produced a significant number of vertical boiler locomotives.

In some cases, the vertical boiler can be used that is less sensitive for the track gradient.

A small vertical boiler requires little floor space.

This type would sometimes have a vertical boiler.

Vertical boiler bank is easy to keep clean.

He was an improved specimen; he could fire up a vertical boiler.

This was a four-wheel double-deck car with two vertical boilers in the centre.

Some steam boats, particularly smaller types such as river launches, were designed around a vertical boiler.

It was an 0-4-0 of highly unusual design, with a vertical boiler and tram-like bodywork.

This was another four-wheel vertical boiler locomotive but of a much more modern design than the one it replaced.

A cross-tube boiler was the most common form of small vertical boiler.

It was a vertical engine with a vertical boiler.

Railway locomotives with vertical boilers were also tank engines.

In the 1930s, coffee machines produced steam and hot water by burning wood or coal beneath a vertical boiler.

The main advantages of a vertical boiler are:

This design used a vertical boiler and a vertically mounted engine which drove one set of wheels through gears.

A flat plate on top of the vertical boiler provided a platform for the steam whistle and spring balance safety valve.

This actually represented one of the boiler's main advantages, compared to vertical boilers with multiple fire-tubes.

Appearance is similar to a steam launch, having a small vertical boiler and vertical cylinders.

A common size, popular with Borough fire brigades, was the double vertical boiler, that could pump between 250 and 450 gallons per minute.

These were chosen to provide a compact boiler, but with easier servicing than for a vertical boiler.

Several other vertical boilers, such as the Straker, had similar arrangements for lifting their shells off the tube nest.

In 1945, Cimbali's "Albadoro" model featured two independent vertical boilers.