Cyclopedia of architecture, carpentry, and building : a general reference work ... (1907)
American School of Correspondence · Chicago : American Technical Society · leaf 214
the least resistance to the flow ofsteam or water. When the radiators are butlittle above the water line in theboiler, gate valves are frequentlvused on the returns to insure anea.sy flow of the water. It seems hardly necessary to point out that a globe valve should be connected in the pipe…
Architecture · Building · Carpentry
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