Dry-pipe system

dry-pipe system

[′drī ‚pīp ‚sis·təm]
(engineering)
A sprinkler system that admits water only when the air it normally contains has been vented; used for systems subjected to freezing temperatures.

Dry-pipe system

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.
References in periodicals archive ?
This balanced response was accomplished by using a dry-pipe system, a suppressant agent called FM-200, and intelligent smoke detectors.
The first part of creating a solution to this dilemma was a dry-pipe system, where the pipes leading to the sprinklers are initially empty and charged with air, and water in the system is held behind a junction point.
Convert sprinkler systems to dry-pipe systems if building heat is not provided or convert to nonfreeze systems for small unheated areas.