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Make sure water supplies will be ready in a fire emergency with NFPA 291!The 2007 edition of NFPA 291 describes testing procedures to determine the rate of flow available at various locations for fire-fighting purposes, classification of hydrants in accordance with their rated capacities, and color coding of hydrants to indicate their class.
NFPA 291: Recommended Practice for Fire Flow Testing and Marking of Hydrants, 2007 Edition
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