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 backflow preventer in a sprinkler system?

To increase water pressure to the sprinkler system To prevent contaminated water from flowing back into the potable water supply To control the flow direction to individual zones To filter debris from the water supply

Correct Answer:

To prevent contaminated water from flowing back into the potable water supply

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