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connie
connie Member Posts: 2
in Radiant Heating
what is the flow rate for half inch pex when applied to a conventional boiler with convectors

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  • Mark Eatherton
    Mark Eatherton Member Posts: 5,875
    It depends....

    on NUMEROUS variables, like pump size and pipe length.



    A general guide is to limit the flow in a 1/2" pipe to less than 2 GPM, preferably more like 1.5 GPM.



    At a 20 degree F differential in temperature, that flow would deliver 15,000 btuH to a properly sized heat emitter.



    ME
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