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tim smith
tim smith Member Posts: 2,738
Do both radiators bang & clink?? I too would suspect reversed tstatic valve.


  • Don_195
    Don_195 Member Posts: 2

    I have a customer that has a couple of (20 section) cast iron radiators that wake her up at 5 am because they bang/clink. The system is an old hot water converted gravity system with a Munchkin boiler, primary/secondary piping, W/ outdoor reset. 1 rad has a traditional angle valve and the other has a thermostaic radiator valve. any sugestions to quiet the radiators down?

  • Derheatmeister
    Derheatmeister Member Posts: 1,514
    Reversed Valve ?

    Can the banging noise be coming from a reversed thermostatic valve? i had one once ,it was only one valve that was reversed in the flow direction and it made a racket tru out the whole house,or maybe it is only the expansion noise when the system turns on.? in this case try const. circ ?
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