VALVES, THEIR MANUFACTURE AND USES Part 3
Description
Reel 1, a father identifies 4 kinds of valves to his family and shows them valves used in their home. Brass valves are cast in a factory. Reel 2, brass valves are finished and tested. Steel valves are made. Shows uses of various valves in automobiles, and at Conowingo Dam, Atlantic City, and the Panama Canal. Reel 3 shows uses of valves at Roosevelt Dam, in the petroleum and helium industries, and for many other purposes.
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Records of the U.S. Bureau of Mines
Series
Public Information Films and Video Recordings
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