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 928
enough to resist deformation by the hammering action of the valve. The inclination of the faceof the valve is usually 45° with the axis. Conical disk-valves may be actuated either by the fluid-pressure or by hand. In the latter case they are opened and closed by a screwed rod. A ball-valve is…
Mechanical engineering -- Dictionaries
Internet Archive · Boston Library Consortium · Public Domain Mark 1.0. Free to use for anything.
