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Anyone know where to get 1 1/2 inch left hand thread pipe plugs?

Could use some for old radiators.
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  • mattmia2
    mattmia2 Member Posts: 9,469
  • mattmia2
    mattmia2 Member Posts: 9,469
    Looks like a left-right nipple and a cap might be the most commonly available solution.
    EBEBRATT-Ed Member Posts: 15,344
    Unless you have a machine shop make some.$$$$
  • ChrisJ
    ChrisJ Member Posts: 15,491
    Unless you have a machine shop make some.$$$$
    Depends on how many you order.

    Single pipe quasi-vapor system. Typical operating pressure 0.14 - 0.43 oz. EcoSteam ES-20 Advanced Control for Residential Steam boilers. Rectorseal Steamaster water treatment
  • mattmia2
    mattmia2 Member Posts: 9,469
    Is the radiator itself left hand thread or is there a bushing in the radiator that is right-left that was used to couple 2 radiators together or make up a fitting with a return without a union or something that could be removed and replaced with a larger right hand thread plug?

    I wonder if there are shops in china with CNC machines that you can send a file to for fabrication cheaply the same way you can send printed circuit boards.
  • JimP
    JimP Member Posts: 86
    I use a cap and 4” nipple or i cut the nipple just past the left hand threads and weld a disc onto the cut end.