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Pipe knocking

  • 18-10-2012 7:31am
    #1
    Villaines
    Registered Users, Registered Users 2 Posts: 51 ✭✭


    Pipe to downstairs radiator runs down a supporting brick internal wall that was blobbed with plasterboard.

    Three zones, up down water, all diverge from hotpress.

    One pipe is knocking badly when it heats - it's in the front room as well.

    Any thoughts on what could be done without ripping the place apart?


Comments

  • #2
    sanbrafyffe
    Registered Users, Registered Users 2 Posts: 680 ✭✭✭sanbrafyffe


    your rad valves could be on the wrong way.there are ones you can get where it doesnt matter where the flow or return goes in but maybe not in this case



    Villaines wrote: »
    Pipe to downstairs radiator runs down a supporting brick internal wall that was blobbed with plasterboard.

    Three zones, up down water, all diverge from hotpress.

    One pipe is knocking badly when it heats - it's in the front room as well.

    Any thoughts on what could be done without ripping the place apart?


  • #3
    Villaines
    Registered Users, Registered Users 2 Posts: 51 ✭✭Villaines


    sanbrafyffe wrote: »
    your rad valves could be on the wrong way.there are ones you can get where it doesnt matter where the flow or return goes in but maybe not in this case

    Should I try to reduce flow through this rad or increase it?


  • #4
    sanbrafyffe
    Registered Users, Registered Users 2 Posts: 680 ✭✭✭sanbrafyffe


    swithch your valves around,,,,this means draining the system and refilling when done




    Villaines wrote: »
    Should I try to reduce flow through this rad or increase it?


  • #5
    shane0007
    Closed Accounts Posts: 4,677 ✭✭✭shane0007


    sanbrafyffe wrote: »
    your rad valves could be on the wrong way.there are ones you can get where it doesnt matter where the flow or return goes in but maybe not in this case

    That is only with some older type TRV's and the radiator just would not heat if that was the case. It would not make noise.

    It is more like an unsecured pipe that is expanding when heated and the only solution is getting to the pipe to secure it properly, unless there are better suggestions.


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