Is there such an option as using PEX for an 1-1/2 vent ? I have a stretch where I need some flexibility for my pipe which is going to be difficult to achieve with copper or ABS.

this is related to this question

What fittings can I use to re-route my copper DWV pipe?

  • Check your locks code. Some areas allow heat bending of pvc vent pipes
    – Kris
    Aug 21, 2020 at 15:50
  • the PVC won't fit through that opening where I need it to be (remember where we discussed the 90 elbow I was looking for)
    – MiniMe
    Aug 21, 2020 at 15:52

1 Answer 1


Pex is only legal for supply plumbing. It's not rigid enough for drain or vent use, as the lack of internal pressure could result in it being constricted.


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