Welcome! Here are the website rules, as well as some tips for using this forum.
Need to contact us? Visit https://heatinghelp.com/contact-us/.
Click here to Find a Contractor in your area.

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

Could use some for old radiators.
To learn more about this professional, click here to visit their ad in Find A Contractor.

Comments

  • mattmia2
    mattmia2 Member Posts: 9,575
    mcmaster-carr?
  • mattmia2
    mattmia2 Member Posts: 9,575
    Looks like a left-right nipple and a cap might be the most commonly available solution.
  • EBEBRATT-Ed
    EBEBRATT-Ed Member Posts: 15,455
    Unless you have a machine shop make some.$$$$
  • ChrisJ
    ChrisJ Member Posts: 15,592
    Unless you have a machine shop make some.$$$$
    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: 9,575
    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: 87
    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.