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Appletons' cyclopaedia of applied mechanics: a dictionary of mechanical engineering and the mechanical arts (1880)

D. Appleton and Company, Benjamin, Park, 1849-1922 · New York, D. Appleton · leaf 927

An illustration from Appletons' cyclopaedia of applied mechanics: a dictionary of mechanical engineering and the mechanical arts, 1880, leaf 927 — hinge, or sometimes edge to edge. In the latter position there isless interference with the movement of the fluid. The flap is sometimes entirely of brass, as in thecase of air-pump foot-valves, where leather would not be sufficiently durable. Valves of this kindare most commonly lifted by the… … 4166

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