The backflow valve on my irrigation system has developed a minor leak at the threads I am pointing to. It's outside and not super fast, so not super urgent, but I would like to get it fixed eventually. Looking at the assembly, I see that every other threaded connection has teflon tape, but the two connections on the backflow unit do not.

I can't speak to why this might be, but since it's threaded I assume the appropriate fix is to unscrew it, slap on some teflon tape, and put it all back together. Is that correct?

enter image description here

  • 1
    Does not look like any tape was used there(odd). All other fittings seems to have tape except those two, so there might be a reason(or the guy ran out of tape).
    – crip659
    Commented May 9, 2022 at 20:34
  • 1
    Properly installed the tape should be fine.
    – Gil
    Commented May 10, 2022 at 0:28


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