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A high-pressure steam locomotive is a steam locomotive with a boiler that operates at pressures well above what would be considered normal for other locomotives. Most locomotives operate with a steam pressure of 200 to 300 psi (1.38 to 2.07 MPa). [1] In the later years of steam, boiler pressures were typically 200 to 250 psi (1.38 to 1.72 MPa).
40: Specifications ... 180 psi (1.24 MPa) Cylinders: Two: ... (35 °C) above the normal steam temperature. The last five locomotives of the 1902 batch - Nos. 1420–4 ...
A locomotive of the type tested on the Rhaetian Railway, in Dire Dawa, Ethiopia RhB G 4-5 Nr. 107 "Albula" in Untervaz-Trimmis. As early as 1902, the SLM manufactured two four-coupled saturated steam locomotives for the Imperial Railway Company of Ethiopia. In the same year, trial runs using one of these locomotives were carried out on the ...
Union Pacific 4014 is a preserved 4884-1 class 4-8-8-4 "Big Boy" type steam locomotive owned and operated by the Union Pacific (UP) as part of its heritage fleet.Built in November 1941 by American Locomotive Company (ALCO) in Schenectady, New York, it was assigned to haul heavy freight trains in the Wasatch mountain range.
Superheated steam was widely used in main line steam locomotives. Saturated steam has three main disadvantages in a steam engine: it contains small droplets of water which have to be periodically drained from the cylinders; being precisely at the boiling point of water for the boiler pressure in use, it inevitably condenses to some extent in the steam pipes and cylinders outside the boiler ...
The Class 685 was the simple-expansion and superheated version of the pre-existing FS Class 680 locomotive, the premier express locomotive in Italy up to that date; while discarding the complicated compound feature, the 685 nonetheless kept the unusual feature of having the cylinders arranged in pairs, with each pair being served by a single piston valve with crossed ports (a feature typical ...
40: Specifications ... 260 psi (As built) ... The Chesapeake and Ohio T-1 was a class of forty 2-10-4 steam locomotives built by the Lima Locomotive Works in 1930 and ...
Firebox of a GWR 6959 Class steam locomotive, showing the underside of the brick arch, constructed from specially-shaped firebricks. Empty firebox of a Baureihe 52, showing the brick arch There is a large brick arch (made from fire brick ) attached to the front wall (boiler throat plate) of the firebox immediately beneath the firetubes.