Foundation’s Report Evaluates 2.5-Inch Connections’ Actual Flow
The Technical Committee for NFPA 14 added the requirement for one 2.5-inch inlet per every 250 gallons per minute (gpm) in 2007, “but this requirement lacks supporting scientific documentation, so there was a need to conduct flow testing to determine the amount of water that is possible to flow into an FDC inlet,” according to NFPA.
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