Kirkman, Marshall M. (Marshall Monroe), 1842-1921 · New York and Chicago, The World railway publishing company · leaf 142
f more than 10 per cent, in theoriginal opening pressure of a valve, a differentspring should be used. THE ASHTON POP SAFETY VALVE. This valve is made both open and with muffler.It is a particularly efficient valve and used veryextensively on locomotives throughout the country. These valves may be…
Locomotives
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