Cyclopedia of heating, plumbing and sanitation; a complete reference work . supply valve on each radiatorstruction designed to be set tosteam under different condi-diator |, \, f, or entirely full ofturn end of each radiator isauto-valve, designed to permitand water into a return pipeopen to the atmosphere atthe top. In the case of largebuildings the water flows bygravity to a tank, from whichit is pumped to the boilers. Fig. 44. Hanger. pS. Fit:. 15. Adjust:Hanger for Large Pipe. Fig. 46. Sleeve for Encasing Pipe. Some of the advantages claimed for this system are:—Absence ofair-valves and ai
Cyclopedia of heating, plumbing and sanitation; a complete reference work . supply valve on each radiatorstruction designed to be set tosteam under different condi-diator |, \, f, or entirely full ofturn end of each radiator isauto-valve, designed to permitand water into a return pipeopen to the atmosphere atthe top. In the case of largebuildings the water flows bygravity to a tank, from whichit is pumped to the boilers. Fig. 44. Hanger. pS. Fit:. 15. Adjust:Hanger for Large Pipe. Fig. 46. Sleeve for Encasing Pipe. Some of the advantages claimed for this system are:—Absence ofair-valves and air-lines; control of the heat emitted, by means of thespecial controlling valve al the Mipply end of each radiator. The pip-ing is the same as for ordinary gravity systems. Vapor System. This system is designed, as its ftame imp 261 38 STEAM AND HOT WATKR FITTIXC c JUL J to work on a very low pressure. The radiators, preferably of the hot-water type, must have considerably more surface than with low-pres-sure steam heating. A special valve is placed at the supply end of eachradiator, designed to admit any desired volume of steam. A little trap or water-seal fitting isconnected with the return end of eachradiator, a small hole being providedabove the water line to permit the escapeof air. All returns are joined in thebasemenl and discharge to an open watercolumn alongside the boiler, any steam inthe returns being condensed by passing
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