Add Wye to Cast Iron Cleanout

Discussion in 'Plumbing Forum, Professional & DIY Advice, Tips & ' started by shotogo, Nov 17, 2013.

  1. shotogo

    shotogo New Member

    Messages:
    2
    Location:
    South Jersey
    Hi all - I'm hoping one of the pros here can answer a question I have. I'm adding a basement bathroom and will be putting in a sewage ejector system. I need to tie in the 2" line from that to my existing stack (i think that's the right term). It currently has the toilet from the first floor (it's a ranch) going into the top with the vent above that and two 1 1/2" lines going into either side from the first floor bathroom sink and tub. Can I put a wye into the cleanout of the cast iron stack and then put a cleanout cover on the end of that? Does this wye need a vent also? I added some pics to make it easier to picture (pun intended). Thanks.

    Rick

    IMG_6330.jpg
    IMG_6332.jpg
    IMG_6329.jpg
  2. Terry

    Terry Administrator Staff Member

    Messages:
    14,761
    Location:
    Bothell, Washington
    I would drill out the lead and pull the cleanout fitting. Install pipe there, with a wye for the sewage ejector, and a cleanout on the end of that.
    No vent needed for that, but the sewage ejector will need a vent through the roof. You may be able to find a vent 42" above the next floor. That is six inches above the highest countertop on that floor. It's called flood level.

    Any waste pipe going from vertical to horizontal needs to be a long turn 90.
    Horizontal to vertical can be a medium bend.
    On the right side, you have a water fitting, not a waste fitting.
    The couplings, need to be solvent weld, or metal wraps to prevent the pipe from shifting. That rubber coupling needs full support, laying on the ground is one use for those. Being used in the air like that, is not one of it's uses. Over time, that joint will sage, and the pipes won't line up.
  3. cacher_chick

    cacher_chick Test, Don't Guess!

    Messages:
    3,236
    Location:
    Land of Cheese
    In case you did not realize, the fitting you mocked up in your photo of the clean out is not a wye. It is a sanitary tee, which is not permitted to be used on the horizontal.
  4. Terry

    Terry Administrator Staff Member

    Messages:
    14,761
    Location:
    Bothell, Washington
    Yes. That fitting has to go too.

    For sure with a pumped 2" line from the sewage ejector, it has to be a wye. Not the santee shown..
    Last edited: Nov 17, 2013
  5. shotogo

    shotogo New Member

    Messages:
    2
    Location:
    South Jersey
    Thanks for the info. Yeah, the tub line with the rubber coupling will be removed when the pipe is rerouted during basement finishing. Thanks for the catch on the santee, I guess I'll be returning it for an actual wye. Out of curiosity what's the advantage to removing the existing cleanout fitting instead of using a threaded coupling? After I remove it and clean out the lead I guess I would use a bushing or donut to transition it to pvc?

    Thanks again.
    Rick
  6. Terry

    Terry Administrator Staff Member

    Messages:
    14,761
    Location:
    Bothell, Washington
    If you can find a male adapter for those threads, that would work too.
Similar Threads: Cast Iron
Forum Title Date
Plumbing Forum, Professional & DIY Advice, Tips & PVC transition to Cast Iron May 31, 2014
Plumbing Forum, Professional & DIY Advice, Tips & inserting 3" PVC in old 3.5" cast iron as a liner!! May 30, 2014
Plumbing Forum, Professional & DIY Advice, Tips & Porous spot on cast iron sewer pipe. May 9, 2014
Plumbing Forum, Professional & DIY Advice, Tips & New Kohler Cast Iron Tub and Gerber Bath Tub Drain Reuseable? Apr 22, 2014
Plumbing Forum, Professional & DIY Advice, Tips & Reduce 4" cast iron to 3" pvc? Apr 8, 2014

Share This Page