A variation of the dry-pipe system is the pre-action system, which has a two-phase response to a fire. _________________________

Name: A variation of the dry-pipe system is the pre-action system, which has a two-phase response to a fire. _________________________
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Question

Quizplus · Accepted Answer

In a pre-action system, the detection system must activate first, which causes water to fill the system's pipes, and then the sprinkler heads will release water when activated by heat. Therefore, it has a two-phase response to a fire.

A Variation of the Dry-Pipe System Is the pre-Action System