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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).
Locomotives in this category used high-pressure boilers. Pages in category "High-pressure steam locomotives" The following 10 pages are in this category, out of 10 total.
This raised high-pressure steam at 900 psi (6.21 MPa) which was taken to power the cylinders and also recirculate pure water. The third steam raising unit was a relatively conventional locomotive fire tube boiler operating at 250 psi (1.72 MPa) heated by combustion gases from the coal fire. [3] The engine was technically an "ultra-high pressure ...
The high pressure necessitated compound expansion; steam being supplied to the two 12-by-26-inch (305 mm × 660 mm) high-pressure inside cylinders and then fed into two larger 20-by-26-inch (508 mm × 660 mm) low-pressure outside cylinders before going to exhaust. High-pressure cylinder diameter was subsequently reduced to 10 in (254 mm).
SNCF 232.P.1 was an experimental prototype high-pressure steam locomotive ordered by the Chemins de fer du Nord, but delivered to the Société nationale des chemins de fer français (SNCF) in 1939 (SNCF was created in 1938 by merging the major French railway companies).
The DRG H 02 1001 was a high-pressure steam locomotive built by the engineering firm of Berliner Maschinenbau (formerly L. Schwarzkopff) to the design of Dr L. Löffler. [1] The aim was not only to improve fuel economy—the usual reason for adopting high steam pressures—but also to increase the amount of power that could be produced within ...
On the first two locomotives independent control of high-pressure and low-pressure valve gears was available. From 1905 onwards, Johnson's successor Richard Deeley built an enlarged and simplified version, eliminating all the Smith refinements and fitting his own starting arrangement, making the engines simpler to drive. These locomotives were ...
The PLM 241 B 1 was a high-pressure steam locomotive built in 1929 for the PLM (Chemins de fer de Paris à Lyon et à la Méditerranée) using the Schmidt high-pressure system. It was a 4-cylinder compound design.