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.