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Alarm check valve (ACV) for sprinkler system_NFPA

Question asked by darlibrary on Sep 3, 2019
Latest reply on Sep 6, 2019 by lswanson

Project is consisting of multiple sprinkler risers. One alarm check valve (inside fire pump room) is considered in design for entire sprinkler system.

Please advise for the below based on NFPA:

is alarm check valve required separately for each sprinkler riser or only one alarm check valve is sufficient for entire sprinkler system?