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dry sprinkler

noun

Definitions

  1. A sprinkler (fire protection device) having pressurized air in the distribution pipes…

    A sprinkler (fire protection device) having pressurized air in the distribution pipes until a heat-activated sprinkler head opens and releases the stored air pressure, which opens the water valve.

    • A dry sprinkler may be used where there is a risk of water freezing solid within the pipes.

The neighborhood

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sense glosses and etymology drawn from English Wiktionary · source · CC-BY-SA