air lock
[′er ‚läk] (engineering)
A chamber capable of being hermetically sealed that provides for passage between two places of different pressure, such as between an altitude chamber and the outside atmosphere, or between the outside atmosphere and the work area in a tunnel or shaft being excavated through soil subjected to water pressure higher than atmospheric. Also known as lock.
An air bubble in a pipeline which impedes liquid flow.
A depression on the surface of a molded plastic part that results from air trapped between the surface of the mold and the plastic.
(mining engineering)
A casing atop an upcast mine shaft to minimize surface air leakage into the fan.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
Air lock
A lobby or small room with self-closing doors to allow access between two other spaces while restricting the amount of air exchanged between them.
Illustrated Dictionary of Architecture Copyright © 2012, 2002, 1998 by The McGraw-Hill Companies, Inc. All rights reserved
air lock
1. A space which is designed to isolate an air conditioned space from another space to which it is connected.
2. In a pump or piping system, the stoppage of flow resulting from the presence of trapped air.
3. An enclosure with control doors between two rooms that permits the ingress and egress from one room to another while permitting minimal air movement between rooms.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.
air lock
i. A stoppage or diminution of flow in a fuel system, hydraulic system, or the like caused by a pocket of air or vapor. Often called
vapor lock.
ii. A chamber capable of being hermetically sealed that provides for passage between two places of different pressure, as between an altitude chamber and the outside atmosphere.
An Illustrated Dictionary of Aviation Copyright © 2005 by The McGraw-Hill Companies, Inc. All rights reserved