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NICET WBSL Level II Practice Questions - NICET Water-Based Systems Layout Level II Exam

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A layout technician is designing sprinkler protection for an unheated loading dock in Minnesota where piping cannot be reliably maintained at or above 40°F. The piping will be filled with pressurized air that holds a differential valve closed until a sprinkler operates. Which system type is being described?
Correct Answer:
Dry pipe system

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