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"Barometric loops must precede the point of connection and shall extend vertically to a height of _____________________. A barometric loop shall only be utilized as an atmospheric-type or pressure-type vacuum breaker. A. 10 feet (3 048 mm) B. 20 feet (6 096mm) C. 35 feet (10 668 mm) D. 100 feet (30 480 mm)!"
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