boiler draft

boiler draft

[′bȯil·ər ‚draft]
(mechanical engineering)
The difference between atmospheric pressure and some lower pressure existing in the furnace or gas passages of a steam-generating unit.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
In the second boiler draft a three section water heater is located.