Y fitting[′wī ‚fid·iŋ]
A pipe fitting with one end subdivided to form two openings, usually at a 45° angle to the run of the pipe. Also known as wye fitting.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
In pipe work, a short specialized section, one end of which branches or divides, usually at an angle of 45 degrees, resembling the letter Y and forming two separate openings.
Illustrated Dictionary of Architecture Copyright © 2012, 2002, 1998 by The McGraw-Hill Companies, Inc. All rights reserved