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Floor control Valve assemblies required check valve though Alarm Check Valve assembly is proposed at riser per NFPA 13, i didn't find any technical reason to have check valve where there is no combined system (wet sprinkler and standpipe) is proposed.

Question asked by mdzaki9 on Apr 2, 2017

NFPA 13 (Edition 2013) Floor Control Valve Assemblies.* Multistory buildings exceeding two stories in height
shall be provided with a floor control valve, check valve, main
drain valve, and flow switch for isolation