subatmospheric heating system
subatmospheric heating system
[¦səb‚at·mə′sfir·ik ′hēd·iŋ ‚sis·təm] (mechanical engineering)
A system which regulates steam flow into the main throttle valve under automatic thermostatic control and maintains a fixed vacuum differential between supply and return by means of a differential controller and a vacuum pump.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
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