Cyclopedia of heating, plumbing and sanitation; a complete reference work . Fig. 44 Automatic Air-Valve. Closed by Expansionof a Piece of Vulcanite. Fig. 45. Automatic Air-ValveOperated by Expansion ofDrum CDue to Vaporiza-tion of Alcohol withwhich it is PartlyFilled. in Fig. 44 is closed by the expansion of a piece of vulcanite insteadof a metal strip, and has no water float. 69 60 HEATING AND VENTILATION The valve shown in Fig. 46 acts on a somewhat different prin-ciple. The float C is made of thin brass, closed at top and bottom,and is partially filled with wood alcohol. When steam strikes
Cyclopedia of heating, plumbing and sanitation; a complete reference work . Fig. 44 Automatic Air-Valve. Closed by Expansionof a Piece of Vulcanite. Fig. 45. Automatic Air-ValveOperated by Expansion ofDrum CDue to Vaporiza-tion of Alcohol withwhich it is PartlyFilled. in Fig. 44 is closed by the expansion of a piece of vulcanite insteadof a metal strip, and has no water float. 69 60 HEATING AND VENTILATION The valve shown in Fig. 46 acts on a somewhat different prin-ciple. The float C is made of thin brass, closed at top and bottom,and is partially filled with wood alcohol. When steam strikes thefloat, the alcohol is vaporized, and creates a pressure sufficient to bulge out the ends slightly, which raises the Spindle and closes the opening B. Fig. 46 shows ;i form of so-called vacuum valve. It acts in asimilar manner to those already described, but has in addition aball check which prevents the air from being drawn into the radiator, should the steam godown and a vacuum be formed. If a partialvacuum exists in the boiler and radiators, theboiling point, and co
Size: 1325px × 1885px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthoramericanschoolchicago, bookcentury1900, bookdecade1900
