Hague, Charles Arthur · New York : McGraw Publishing Company · leaf 229
he possibil-ities of refinement along the old lines of steam jacketing,high steam pressures, steam expansion, condensers, and airpumps, were too costly to justify their general adoption inwater works service, even though they did show their abilityin the line of much greater steam economy. The… … VARIOUS TYPES AND CLASSES
Pumping machinery
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