Elementary lessons in steam machinery and the marine steam engine, with a short description of the construction of a battleship (1893)
Langmaid, Joseph, Gaisford, H · London, New York : Macmillan · leaf 145
Fig. 62.—Pump Valve (Non-return). (Page 123.) … Fig. 63.—Ordinary Straightway Cock. (Page 124.) 125 lesson xi VALVES AND COCKS 127 means of a nut and washer at the bottom for small sizes, or agland and studs at the top for large sizes. If the plug is placedso that the passage through it corresponds with the passage inthe shell, the cock is said…
Steam-engines · Marine engines
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