Worthen, William Ezra, 1819-1897, [from old catalog] ed · New York, Appleton · leaf 396
of the pipe. Figs. 872 and 873 are the plan and section of a steam valve of the South-wark Foundry pattern; the seats and faces are of metal ground to a fit. Thevalve is guided by three wings, to w. The flow through globe-valves, as will beseen by their sections, have three changes of direction ;… … 380 MACHINE DESIGN AND MECHANICAL CONSTRUCTIONS. above), as the pressure on the valve may be nearly balanced throughout itsmovement, it can be made of large area, and still be under the control of ahand wheel. GATE-VALVES. When the pressure is always on one side of the valve, it may be made as…
Mechanical drawing
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