A treatise on the steam engine

A treatise on the steam engine

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and then the safety-valve will shut again, by the predominance of its weight, over the pressure of the interior steam. ... of the boiler j a perpendicular stem passes through the centre of the valve, and is retained in sockets, which guide the valve into its proper seat, as it rises and falls. ... As the steam in the boiler cools, when the* fire is extinguished, the air must be admitted into the boiler, or else a vacuum anbsp;...

Title:A treatise on the steam engine
Author:John Farey
Publisher: - 1827


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