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2016 NFPA 13 Section - Duct Sprinklers

Question asked by on Jun 24, 2019
Latest reply on Jun 27, 2019 by ben_oregan

2016 NFPA 13 Section requires all sprinklers in a duct flowing at a minimum pressure of 7 PSI.  For a spray booth exhaust duct with 70 heads (>600 feet in length), this would result in about 1500 gpm for heads with a K Factor of 8.0.  


Is this the intent of this section or would Section apply to ducts and require only 7 heads flowing?