We just redid our sprinkler system last year and I found some weeping here when turning on the sprinklers for the summer. Is it possible to stop without having to take everything apart?

back of weeping joint

[front of weeping joint1

  • 3
    If it wasn't leaking last year, and is now, one possible cause is expansion of water stretched those fittings. Aside from any immediate repair, be sure that the system is completely drained to below the frost line next fall, if there is any chance of freezing in your climate. Apr 11 at 1:32
  • 6
    Only a note: check that it is weeping as it could be simply condensation. Cold metal parts in a humid weather will collect condensation.
    – ghellquist
    Apr 11 at 10:40
  • If you really don't want to disassemble it, maybe solder. Probably will damage some of the internal seals, however.
    – Nick T
    Apr 11 at 16:21
  • 1
    Seems like soldering this would require disassembly anyway, with the PTFE tape on the threads.
    – spuck
    Apr 11 at 16:39
  • You could try to wait out low flow rate seeping at joints on outside connections. At least with pipe dope seeping may finally plug from particulates in the water or the pipe dope. With PTFE tape alone it might take longer or maybe never stop seeping. Apr 11 at 17:33

1 Answer 1


Those are both bronze (a copper alloy, not copper), and you'll have to disassemble enough to be able to tighten that. Or remove it, apply dope or tape, and tighten it.

Should not be "everything" but if you (or whoever built it) didn't put in enough unions to make it easily serviceable, it might be a lot. Or you can cut pipes and add unions to take apart less now, and make it more serviceable next time.

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