n valve used was the “plug” valve, and when this was fitted with valves where steam, water, air, ammonia or gas is used, and the new patent packing rings just described, it was found to to do this with practically no friction. The packing is usually operate not only as freely as before but an… … burning liquids. It minimizes the danger which has hitherto Comp'd Chord Plece attended the use of fuel oil by providing the equipment with positive valve control. The valve can be used in connection with various oil-burning systems, such as steam boilers, heat- ing and tempering furnaces, rivet…
Shipbuilding -- Periodicals · Shipbuilding industry -- Periodicals
Internet Archive · Smithsonian Libraries · Public domain (published before 1931). Free to use for anything.
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