Which automatic sprinkler system normally has open sprinkler heads?

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Multiple Choice

Which automatic sprinkler system normally has open sprinkler heads?

Explanation:
Deluge systems have sprinkler heads that are all open. When the system activates, water is released through every head at once, providing immediate, wide-area coverage. This contrasts with wet, dry, and pre-action systems, where heads are normally closed and water only reaches specific heads or requires a two-step release. The open-head design is why deluge systems are used in areas needing rapid, expansive sprinkler coverage.

Deluge systems have sprinkler heads that are all open. When the system activates, water is released through every head at once, providing immediate, wide-area coverage. This contrasts with wet, dry, and pre-action systems, where heads are normally closed and water only reaches specific heads or requires a two-step release. The open-head design is why deluge systems are used in areas needing rapid, expansive sprinkler coverage.

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