dry-pipe system[′drī ‚pīp ‚sis·təm]
A sprinkler system that admits water only when the air it normally contains has been vented; used for systems subjected to freezing temperatures.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
A system for fire protection that uses pipes containing air under pressure instead of water; controlled by a valve that allows water to enter the pipes in the event of a fire.
Illustrated Dictionary of Architecture Copyright © 2012, 2002, 1998 by The McGraw-Hill Companies, Inc. All rights reserved