Running a drain for bathtub question

Discussion in 'Plumbing Forum, Professional & DIY Advice' started by trinculo54, Aug 18, 2005.

  1. trinculo54

    trinculo54 New Member

    Jun 24, 2005
    I am installing a new bathroom in my home and I have a bathtub that is facing away from the drain, IE it's a right facing drain with the wall plumbing on the left. I had started with 1 1/2" drain pipe from the stack when I realized I need to run 2" to complete the almost 5' run to the tub drain. My dilemma is with a 2" p-trap how do I connect this to the 1 1/2" "L" shaped tub drain fixture? Do they make a p-trap that connects a 2" to 1 1/2" drain? If there is I can't seem to find it at my local improvement box store. Any help would be great, thanks!
  2. thezster

    thezster New Member

    Jul 18, 2005
    Retired young... day trade stocks - and to keep bu
    Fort Collins, Colorado
    Assuming you're running PVC......... you should be able to easily find an adapter that reduces the 2inch trap to a 1 1/2 inch compression fitting. (I'm pushing Home Depot today as I just bought a bunch of shares)

    Is your trap at the end of the 5 1/2 foot run - or were you able to move it to the tub drain end of the line? You may have venting problems with this one.... and I'm sure a more experienced plumber type will jump in with a more professional opinion...

    Not a pro - just improvise when I need to...............
    Last edited: Aug 18, 2005
  3. Sponsor

    Sponsor Paid Advertisement

  4. trinculo54

    trinculo54 New Member

    Jun 24, 2005
    I thought for sure there would be something like what you described, ie 2" to 1 1/2" fitting but I can't find it...would it be part of the trap assebly? Or would it be just a reducer with a compression fitting...I can't find a 2" to 1 1/2" compression fitting either. Anyone else?

    Also the trap is within the 5' venting limit for 2" pipe, it's also ABS...for some reason there is little to no (white) PVC to be found at HD or Lowes in Oregon! Go figure?!?
  5. sulconst2

    sulconst2 New Member

    Jul 11, 2005
    old bridge nj
    you should be able to find a 2 to 1 1/2 reducer then a 1 1/2 trap adapter. might have to go to a supply house.
  6. trinculo54

    trinculo54 New Member

    Jun 24, 2005
    sulconst2, That's what I'm using as a solution now, but I'm afraid it might be a little bit to tall...I'll have to set the tub to know for sure. I was hoping for a simpler solution then a bunch of adapters stacked on each other...but if that's what I have to do then that's what I'll have to do!

    Thanks for the advice.
  7. Cal

    Cal New Member

    May 10, 2005
    Northern Virginia
    Run your 2" line AND 2" p-trap. In the cup of the 2" p-trap that is looking up towards the tub,,,glue a 2 " x 1 1/2 " BUSHING .this should allow enough room for the rest of the fittings/drain .
Similar Threads: Running drain
Forum Title Date
Plumbing Forum, Professional & DIY Advice Reverse Osmosis Drain constantly running Jul 23, 2016
Plumbing Forum, Professional & DIY Advice Running drain (and vent) lines for stacked, identical bathrooms May 26, 2014
Plumbing Forum, Professional & DIY Advice Toilet drains when shower is running. Mar 21, 2012
Plumbing Forum, Professional & DIY Advice Air in pipes? Nothing has been opened/drained. Could my Well be running dry? Sep 1, 2011
Plumbing Forum, Professional & DIY Advice Running a Washing Machine drain under slab Apr 5, 2009

Share This Page