I am adding a toilet and sink in my basement. I have a permit and have
cut up the slab and have located the 3 inch ABS drain pipe. I know how
the pipes will flow and I have a vent pipe located. Everything is ready
I am not sure how to insert the 3 inch Wye into the existing 3inch ABS
drain pipe under the slab.
I know about a fernco fitting and bought one at Home Depot. It is a 3
inch plastic to plastic one that is all rubber with a clamp on each
end. I think I read here those could not be used underground. Is that
My plan was to cut a section of the current 3 inch ABS out and leave
room to attach a small stub pipe to one end of the WYE. Then slide the
Fernco fitting over the other end of the existing pipe, insert in the
WYE with the stub piece so there is about a 1/4 gap between the stub
piece and the existing pipe and then slide the fernco over this 1/4
inch gap and tighten the clamps after I glue the WYE to the other
Can this fernco fitting be used underground? Or do I need one of these
with a metal sleeve? I keep seeing a picture od a PROFLEX fitting but
can find none online.
Also, can someone tell me is a SLIP fitting would be better? It sounds
better but seems like once I apply the glue you have to move really
quickly to make it work.
Any help would be so appreciated.