Does this constitute an S-trap? I don’t believe so but I am not certain. Thanks!
Appears to be a “P” trap since the horizontal drain line appears to be longer than 6 inches. You would have to measure it to be certain. I am seeing a lot of plumbers fix old “S” traps by extending the horizontal run these days.
Unless there is a AAV where it turns down, it looks likes it nothing more than a modified S-trap. The key is venting…not necessarily distance. Even with AAV you need to check that they are permitted in your area.
Oh yeah, when inspecting AAV / Studor vent they should be 4 inches above the weir of the trap. This can sometimes be problematic with deep bowls of kitchen sinks…I have come across this a couple times…usually with renovations.
This is in a townhouse and it wasn’t possible to see the plumbing from underneath since it has a finished basement. Thanks to both of you for the input. Much appreciated.
Bruce, does the piping go back into the wall or down into the floor.
It looks like it may go back to a wall where I suspect its vented…if that’s the case then your simply looking at double trapping…blockage issues and trapped gases.
This is one of the reasons I never refer to handymen to do jobs that should be done by professionals. We see this allot in remodeling jobs and DIY’s.
PS. Patrick, if you don’t see a studor vent /AAV under sink then you should recommend it be evaluated by a licensed plumbing contractor.
Even if he erroneously gives bad information, you are off the hook.
That look more like a “C” or “G” trap!!
Thanks, Jeff. Great advice!