wet-pipe sprinkler system

wet-pipe sprinkler system

A fire sprinkler system consisting of a network of pipes containing water under pressure. Automatic sprinklers are connected to piping so that each sprinkler (head) protects an assigned area of coverage; the water discharges immediately from any sprinkler opened by the heat of a fire.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.