Mechanical equipment of buildings; a reference book for engineers and architects (1916)
Harding, Louis Allen, Willard, Arthur C. (Arthur Cutts), 1878-1960 · New York Wiley · leaf 484
and-ing element in the thermostat operating to admit air or waterunder pressure to a diaphragm which is of proper size to exertthe requiied pressure at the valve or damper and thus close oropen it. If the pressure thus transmitted operates to close the valve, then either springs or weights of the… … Fig. 7.Powers Thermostat K 460 HEATING AND VENTILATION Johnson, and National, each of which uses a different expansion element in the thermostat itself,but they all use the same general system of control, and the same specialties and accessories.All of these systems use compressed air at about 15…
Building · Heating · Ventilation
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