PC to ABS: Fernco or solvent weld?

Discussion in 'Plumbing Forum, Professional & DIY Advice, Tips & ' started by dgold, Oct 22, 2011.

  1. dgold

    dgold Product R&D for a powertool manufacturer

    Messages:
    82
    Location:
    Carlsbad, CA
    Below is a pic of the drain pipe under my master bath vanity. My drain pipes are made of ABS.

    About a 1/4" from the face of the escutcheon, someone has previously welded a straight coupling, and for God knows what reason, the trap has been glued together.

    I am installing a new base cabinet and top, and the drain needs to be repositioned.

    Should I cut along the yellow line, remove the escutchion, and slip on a Fernco coupling?
    Or can I make a cut a little further out, and solvent-weld a PVC street coupling into the inner ABS pipe?

    Orange has an "all-purpose" cement which works on both ABS and PVC, but it doesn't say on the label if it's okay for to welding together two different plastics together.

    Just trying to ascertain a legitimate way to do this - preferably without tearing into the wall.

    Thanks in advance,
    David

    Master vanity drain.jpg
  2. dlarrivee

    dlarrivee New Member

    Messages:
    1,172
    Location:
    Canada
    There is a transition glue available, but in your case I wouldn't use it.

    Cut on that yellow dotted line, and lose the bell-escutcheon, bore out the back of the cabinet enough to fit a new ABS coupling.

    I'd be tempted to use a spigot-trap adapter, and use a tubular trap so you can avoid problems like this later on.
Similar Threads: Fernco solvent
Forum Title Date
Plumbing Forum, Professional & DIY Advice, Tips & Fernco to CI leak Sep 21, 2014
Plumbing Forum, Professional & DIY Advice, Tips & Buried Fernco/Mission coupling - use metal banded or all rubber? Aug 15, 2014
Plumbing Forum, Professional & DIY Advice, Tips & PVS Repair Coupling VS. Fernco Coupling Apr 20, 2014
Plumbing Forum, Professional & DIY Advice, Tips & Fernco Donut Tight-ness question (maybe too loose?) Mar 12, 2014
Plumbing Forum, Professional & DIY Advice, Tips & Fernco couping question Jun 2, 2013

Share This Page