Use of jointing compound/PTFE tape?

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    • #277101
      Daniel Richardson

      What does the professional plumber use to guarantee a leak-free joint when making connections (brass compression) to a hot water cylinder (copper), please?

    • #295419
      Retired plbg1
      Participant

      There is no leak free joints, if comp. is installed right then you should not have any trouble, also years of exprience.

    • #295420
      Selgas
      Participant

      Normally compression type joints do not need any materials to seal them if they are done poperly.
      Check with your local Plumbers on how they do the joints in England where you are – every Country has different ideas and systems – they do not always follow the same.



      Selgas Services Ltd
      Craftsman Gasfitters, Plumbers, Electrical Service Technicians

    • #295421
      nicktheplumber
      Participant

      Peter is absolutely correct when he says that compression fittings (and this applies to flare fittings and machined unions as well) do not require any sort of pipe “dope.” These fittings depend upon clean and well-formed mating surfaces only. The only plumbing fittings that would benefit from pipe “dope” or Teflon tape are threaded fittings. As regards these threaded fittings, I use both Rectorseal #5 and good (mil-spec) Teflon tape with very good results.

      In the “old days” some plumbers (like my grandfather and they guy I apprenticed with) used worked “plumber’s thread” and pipe dope into the male threads of the pipe joint, but no one does that anymore. I still have a couple of rolls of this special thread I inherited over 25 years ago, but I’ve never used it.

      NtP

    • #295422
      Robert Stephen Morton
      Participant

      Nick & pete, can you remember Lithards & how to make it. I have still got 12/2 a roll of Hemp.

      Bob

    • #295423
      Selgas
      Participant

      Bob

      Heck no I don’t remember that at all – how old do ya think I am lol.

      I am not owning up to anything that suggests I may be getting older hahahahaha



      Selgas Services Ltd
      Craftsman Gasfitters, Plumbers, Electrical Service Technicians

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