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replacing a bleed valve

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  • 11-11-2008 10:57pm
    #1
    Carawaystick
    Registered Users Posts: 8,779 ✭✭✭


    a few years ago I was letting air out of the en suite radiator and when tightening up the valve, I wrung off the nut head by tightening it too much.
    Now the cold is really back, and more air has found it's way into the rad, I need to bleed it again.

    the original valve nut was iron or some grey metal.
    I got a new valve unit of brass. Can I just close both of the rad taps at the bottom, unscrew the bleed valve and screw in the new brass one?

    is there any issue using brass on a steel rad?

    i presume I just note how open the outflow tap is and re-open the normal tap to full?

    Should I be concerned about the rad filing with air? It's a single panel rad about 80x60cm

    Any other gotcha's to worry about?


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    #2
    copper12
    Registered Users Posts: 680 ✭✭✭copper12


    You just about have it all sorted
    No problem using brass
    If you cant get the rest of the old nut out
    You could drill the smallest hole’ that you can on top of the radiator’ use a self tapping screw’ with plumbers tape’ rap this around the screw and tighten’ until the water stops’ other than this you will need to replace the rad


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    #3
    JamesM
    Registered Users Posts: 1,775 ✭✭✭JamesM


    If the valve is at the back of the rad, it is likely that the vent you bought won't fit it. If it is at the end, you can just replace the whole fitting as you described. Use PTFE tape on the threads when you screw in the new one.
    Jim.


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