. Power, heating and ventilation ... a treatise for designing and constructing engineers, architects and students . eordinary globe or angle valve, except the stem slides up anddown instead of being threaded and running in a nut. The topof the stem connects with a flat plate which rests against a rubberor corrugated metal diaphragm. The valve is held open by aspring, and is closed by admitting compressed air to the spaceabove the diaphragm. In connecting up the system, small con-cealed pipes are carried from the air reservoir to the thermostat,which is placed upon an inside wall of the room, a
. Power, heating and ventilation ... a treatise for designing and constructing engineers, architects and students . eordinary globe or angle valve, except the stem slides up anddown instead of being threaded and running in a nut. The topof the stem connects with a flat plate which rests against a rubberor corrugated metal diaphragm. The valve is held open by aspring, and is closed by admitting compressed air to the spaceabove the diaphragm. In connecting up the system, small con-cealed pipes are carried from the air reservoir to the thermostat,which is placed upon an inside wall of the room, and from hereto the pneumatic valve at the radiator. 242 HEATING AND VENTILATING PLANTS Fig. 166 shows a section through a pneumatic steam is the connection for the air pressure, F the rubber diaphragmand G the spring for opening the valve after the pressure isexhausted. Fig. 167 shows an external view of a similar valve. Diaphragm Motors.—Dampers are operated pneumatically ina similar manner to steam valves. A diaphragm motor, so called,is acted upon by the air pressure, and this in turn lifts an arm. Fig. 168. Diaphragm Motor for Operating Dampers.
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectventilation, bookyear
