Cyclopedia of heating, plumbing and sanitation; a complete reference work . : Fig. 55. Air Valve. ^siri7^ inside the bolts. To describe a tee, al-ways give • the dimensionsof the run first and theoutlet last; for example, atee 6 inches at one end, 5inches at the other, with anoutlet at the side Z\ inches,would be known as a 6 by5 by 3^ tee. Expansible noat


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