Back flow preventer requirement

Discussion in 'Plumbing Building Code' started by Tamas, Apr 11, 2018.

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  1. Apr 11, 2018 #1

    Tamas

    Tamas

    Tamas

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    hello,
    I always put a BFP in water supply of tall building, 3- story and up
    What is concept- rule to determine....?

    T
     
  2. Apr 11, 2018 #2

    Geofd

    Geofd

    Geofd

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    the rules may differ from state to state...if its just offices in mass you don't need containment ....only chem feeds in commercial kitchens....chem feed boilers....irrigation systems....and fire protection ,janitors soap stations
    if there are research labs that's another storycheck with your dept of enviormental protection.....they regulate what backflow goes were.....they are te ones who survey the bld...and test the backflows
    a lot of achitects put them on the plans but really don't know the regulations.....just had this happen at work regular office bld they installed 2 4' rpz lots of labor and big money for all of it ......project manager said architect
    woudnt sign it off unless they were there...now they are tested 2 times a year for 400buck for the life ofe the bld unless we rip them out
     
  3. Apr 11, 2018 #3

    breplum

    breplum

    breplum

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    Jurisdictional rules apply.
    I do not thin UPC has specific requirement, so local authorities rule.
    In the S.F. Bay Area, our water supplier wants all commercial building to have BFPs, even single story.
     
  4. Apr 14, 2018 #4

    Geofd

    Geofd

    Geofd

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    i just went to one of our of campus blds to repair a backflow preventer and there is a large renovation...the engineer wont sign off on the job unless there are 2 testable backflow devices feeding each HAND sink......not needed
    crazy money spent if people would get educated on this part of plumbing/drinking water/enviormental codes it would be better....check your dept of enviormental protection...regulations that's who regulates Massachusetts
    not sure if your state has this
     
  5. Apr 17, 2018 #5

    TomFOhio

    TomFOhio

    TomFOhio

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    Around here it is the same as breplum said. All commercial buildings need them. On the hand sinks we had to put
    on mixing valves, no backflows.
     

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