Steam Dome

The steam dome is a vessel fitted to the top of the boiler of a steam locomotive. It contains the opening to the main steam pipe and its purpose is to allow this opening to be kept well above the water level in the boiler. This arrangement acts as a simple steam separator and minimises the risk that water will be carried over to the cylinders where it might cause a hydraulic lock - this is also known as priming.

A steam dome should not be confused with a sand dome.

Read more about Steam DomeDevelopment, Traction Engines, Stationary Boilers

Other articles related to "steam, steam dome":

Prussian T 3 - Design
... The T 3's had a wet steam engine with two cylinders that drove the centre coupled axle ... The early T 3's did not have a steam dome, but were equipped with a regulator housing on top, from which the admission pipes led directly to the cylinders outside the boiler ... Later batches (from 1887) had a steam dome, and the admission pipes were located in the smokebox ...
Steam Dome - Stationary Boilers
... Most designs of stationary boilers did not generally require a steam dome, as they were built large enough to allow adequate steam space within their main drum ... Water-tube designs had a suitable steam drum mounted high above their evaporating surface and this performed a similar function ... Some designs retained a steam dome German and French practice often fitted them to Scotch marine boilers and other naval boilers such as the Normand, where British practice would do ...

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