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repair air valve threads on radiator

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lakefruit
lakefruit Member Posts: 18
edited September 2019 in Strictly Steam
Hi Guys. One of my radiator has bad thread. It is so bad that regular 1/8'' tap doesn't work anymore. I looked at internet and found this video that showed to drill a bigger 1/4'' hole and use an ⅛-inch to ¼-inch bushing.
https://www.thisoldhouse.com/how-to/how-to-repair-radiator-air-vent-threads
Has anyone done this before, is it relatively easy for an average ppl? I am kind of afraid that I might damage the radiator.

Thanks

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  • ethicalpaul
    ethicalpaul Member Posts: 5,702
    edited September 2019
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    I'm a bit above average :D and I wouldn't hesitate to try it. The biggest thing is getting the npt tap. And don't drill a 1/4" hole, drill the size the tap asks for.

    Also regarding your concern about damaging the radiator, sounds like it's already damaged!
    NJ Steam Homeowner. See my sight glass boiler videos: https://bit.ly/3sZW1el
    Tinman
  • lakefruit
    lakefruit Member Posts: 18
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    @ethicalpaul true. It is already damaged. :(
    ethicalpaul
  • Fred
    Fred Member Posts: 8,542
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    It's done all the time. Buy the right tap and take your time tapping the hole.
    ethicalpaul
  • ethicalpaul
    ethicalpaul Member Posts: 5,702
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    lakefruit said:

    @ethicalpaul true. It is already damaged. :(

    That's when you can afford to be bold! You got this :)
    NJ Steam Homeowner. See my sight glass boiler videos: https://bit.ly/3sZW1el
    Grallert

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