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London & North Western Railway Society
Glossary for the LNWR Society

Glossary Results for Word "Caprotti Valve Gear"

Caprotti Valve Gear Type of steam locomotive valve gear utilizing poppetExplain 'Poppet Valve' type valvesExplain 'Poppet Valve'. Invented by the Italian engineer, Arturo CaprottiExplain 'Caprotti, Arturo (1881—1938)', it was claimed to improve engine efficiency. It was first tried in the UK on an LNWR Claughton ClassExplain 'Claughton 4-6-0 Locomotive Class' locomotive in 1926. In practice it proved hard to maintain and was not as efficient as long-travel piston valvesExplain 'Piston Valve'.