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pipe dope around new lwc

With help and encouragement fromt his board, I finally removed the LWC that was ailing, and was about to install the new one I bought.

What I have on hand for the connections (eg, the plug at the bottom of the LWC, the union that gets connected to the nipple) is Gripp (see photo), and also ordinary white plumbers teflon tape. I've used Gripp for pipes, and it's never leaked.

Is Gripp OK for the LWC connections that I mentioned? Or is that asking for a difficult time if I ever have to undo anything? I'd rather just use what I have on hand so I don't have to stop and go to the store. Any sage advice?

Comments

  • ChrisJ
    ChrisJ Member Posts: 15,442
    So far, I've liked just using teflon tape on brass connections and never had a problem.
    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
  • Bob Bona_4
    Bob Bona_4 Member Posts: 2,083
    I would not use Gripp on that fitting. Stuff is nasty and doesn't like disassembly, and if any gets on your clothes, they're trashed.

    Been using Megaloc with great success over the years, no Teflon on that fitting for best grounding connection. Any other place gets 4-5 wraps Blue Monster and the Megaloc over the tape.
  • Fred
    Fred Member Posts: 8,542
    I have the same MM #67 LWCO. Teflon tape works fine on those fittings.
  • JUGHNE
    JUGHNE Member Posts: 11,021
    This is a float type cut off, not an electronic probe type, right??
  • Bob Bona_4
    Bob Bona_4 Member Posts: 2,083
    Oops, didn't see pics. Float type, still would use something less obstinate than 'ol Gripp :)
  • Steamhead
    Steamhead Member Posts: 16,719
    Yup. What boiler is this going on?
    All Steamed Up, Inc.
    Towson, MD, USA
    Steam, Vapor & Hot-Water Heating Specialists
    Oil & Gas Burner Service
    Consulting
  • Going on a small, 1-pipe steam. The vapostat (installed with help from all of you!) keeps it max maybe 6 ounces. So I think from what I read above, the teflon tape will get me through this project. Really, it's just the brass to brass union, the steel plug at the bottom, the connector copper tube, and then the pigtail. All are small diameter and since I am such low pressure I will try the teflon and see how it goes. Thanks everyone for the help.
  • SWEI
    SWEI Member Posts: 7,356
    Make sure you get some decent Teflon tape. Blue Monster or gas tape makes a world of difference.
    Bob Bona_4
  • Steamhead
    Steamhead Member Posts: 16,719
    Any chance this boiler could use a probe-type LWCO?
    All Steamed Up, Inc.
    Towson, MD, USA
    Steam, Vapor & Hot-Water Heating Specialists
    Oil & Gas Burner Service
    Consulting
    Bob Bona_4