TN CMC-D Fire Sprinkler Practice Questions - Tennessee Fire Sprinklers And Fire Protection (CMC-D) Contractor Examination Exam

A wet-pipe sprinkler system is best described as a system in which:

Piping is filled with air or nitrogen until a sprinkler opens Open sprinklers discharge only after a detection system trips a deluge valve Piping is filled with water under pressure so that water discharges immediately when a sprinkler opens Water is held back by a preaction valve until both detection and a sprinkler operate

Correct Answer:

Piping is filled with water under pressure so that water discharges immediately when a sprinkler opens

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