crown vent

crown vent

crown vent
In plumbing a vent pipe which is connected at the crown, 9 of a trap.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.
References in periodicals archive ?
These "crown vents" included a short horizontal run that would occasionally get flooded with sewage but was never thoroughly flushed out by water.