Chicago : Engineering and Contracting Pub. Co. · leaf 147
. Hydrants must have a waste orifice fordraining them, so located and designed thatwhen all hose and steamer ports are closedand the main valve slightly opened, waterwill be forced through the waste orifice un-der pressure. The waste orifice shall have asuitable threaded connection for attaching… … Use Machine Bo/ts f ~\f*K> Plate Htzshers r; 5YD-~ Y^andJfandardro/dAi
Buildings
Internet Archive · University of Illinois Urbana-Champaign · Public Domain Mark 1.0. Free to use for anything.
