plumbing appurtenance

plumbing appurtenance

A manufactured device or assembly of prefabricated components which act as an adjunct to the basic piping system and plumbing fixtures; usually performs a useful function such as operating, maintaining, or servicing the plumbing system; does not add either to the water demand or to the discharge load of fixtures or of the drainage system.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.