DC Fire Sprinkler Practice Questions - District Of Columbia Fire Sprinkler Contractor Exam

Under NFPA 13 as adopted in DC, what is the purpose of a check valve at the water supply connection?

To regulate water flow To prevent reverse flow of water from the system back into the supply To measure system pressure To filter debris from the water supply

Correct Answer:

To prevent reverse flow of water from the system back into the supply

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