Cyclopedia of heating, plumbing and sanitation; a complete reference work . onsequent pres-sure of certain volatileliquids. These meansare usually employedto open small valveswhich admit water-pressure under rubberdiaphragms; and thesein turn are connectedby means of chainswith the draft doorsof the furnace, and soregulate the draft asrequired to maintainan even temperatureof the water in theheater. Fig. 82 showsone of the first 1 is a metal rod placedin the flow pipe fromthe heater, and is soconnected with thevalve B that when thewater reaches a certaintemperature the expansion of the
Cyclopedia of heating, plumbing and sanitation; a complete reference work . onsequent pres-sure of certain volatileliquids. These meansare usually employedto open small valveswhich admit water-pressure under rubberdiaphragms; and thesein turn are connectedby means of chainswith the draft doorsof the furnace, and soregulate the draft asrequired to maintainan even temperatureof the water in theheater. Fig. 82 showsone of the first 1 is a metal rod placedin the flow pipe fromthe heater, and is soconnected with thevalve B that when thewater reaches a certaintemperature the expansion of the rod opens the valve and admitswater from the street pressure through the pipes C and D into thechamber E. The bottom of E consists of a rubber diaphragm,which is forced down by the water-pressure and carries with it thelever which operates the dampers as shown, and checks the the temperature of the water drops, the rod contracts andvalve B closes, shutting off the pressure from the chamber E. Aspring is provided to throw the lever back to its original position,. St-Iron Heater Not Made in Sections. WaterPills i Iross-Pipes Space between outer andInner Shells. 106
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