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Standpipe PRV

Question asked by john_rutherford on Jul 21, 2020
Latest reply on Jul 21, 2020 by nocivus

Dear NFPA Xchange,

 

NFPA 14-7.2.4 states " Where more than two hose connections are used down stream of a pressure-regulating device the following conditions shall apply:

(4) An equally sized bypass around the pressure-regulating device(s), with a normally closed control valve, shall be installed.

Question: Is there any exceptions in providing a bypass for each main riser PRV? The apartment complex has limited stairwell space where the PRVs are going to be located at each stairwell at 5 locations. Would providing individual PRVs to each individual standpipe hose valve connection be the only solution if space is an issue. Drawing is attached below.

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