Flap trap | Article about flap trap by The Free Dictionary
flap trap[′flap ‚trap]
In plumbing, a trap fitted with a hinged flap that permits flow in one direction only, thus preventing backflow.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
In plumbing, a trap
having a hinged flap which allows flow in one direction only, preventing backflow.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.
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