The steam engine and turbine; a text-book for engineering colleges (1911)
Heck, Robert Culbertson Hays, 1870- · New York, D. Van Nostrand company · leaf 415
ps which fit tightly against 400 VALVE GEARS AND GOVERNORS. [Chap. VIII. each other at the corners; note .that the enclosed space is vented tothe exhaust port. In Fig. 262 the reheved area is circular, as also inFig. 202. Since the tightness of these valves depends upon their beingpressed down on… … Fig. 263. — Piston Valve of the Allen Type. steam. When a port is partly open, for admission, nearly or quite thefull pressure acts upon the under face of the overlapping part of thevalve, thus diminishing the effective unbalanced area. (e) Design of Steam Passages. — The determining factor for…
Steam-engines · Steam-turbines
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