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  1. Jo9008

    Where can I locate Pressure Reducing Valves (NFPA 13 & 20)?

    NFPA 20 says I cant use a PRV after my pump discharge to limit system pressure. Well where does that "discharge" end? Can I put it at the the base of a riser? Does the riser need a check valve? Or can it only go after floor control valves?

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