NEW Washer, drain leaks

Discussion in 'Plumbing Forum, Professional & DIY Advice, Tips & ' started by jrb7911, Oct 28, 2004.

  1. jrb7911

    jrb7911 New Member

    Messages:
    2
    We just purchased a new large capacity washing machine (old one was not large capacity) and now the drain pipe overflows if you use the medium or high water setting. The drain pipe is ABS 1 1/2" and runs approximately 20' before emptying into the 4" sewer line. Is this machine pumping to much water for the line to handle? Should I replace the 1 1/2" with 2"? I have run a drain snake all the way down the line and it appears to be clear. Any ideas?
    Thanks
  2. Gary Swart

    Gary Swart In the Trades

    Messages:
    7,308
    Location:
    Yakima WA
    Washer drain

    A washing machine drain should be 2". You got away with it before because you had a smaller washer that didn't put as much water out as the new one. Besides going to 2", you need to be sure you have at least 1/4" per foot slope, and the drain must be trapped.
  3. e-plumber

    e-plumber DIY Senior Member

    Messages:
    137
    Location:
    New York
    Agree with Gary.
    I would also suggest that when snaking the line, a power machine is used with the largest possible snake head that will fit into the 1-1/2" line, even if it means cutting the ABS drainage piping. You can also try raising the stand pipe, (above the trap) several inches higher.
    If all else fails, replace the complete run with 2" pipng and use the least amount of fittings as possible.
  4. Deb

    Deb Plumber

    Messages:
    200
    Location:
    Idaho
    The drain should also be vented within 5' of the p-trap. The p-trap should be 6-18" off the floor, the standpipe 18-30" tall, use 2" for the drain line, 1-1/2" for the vent and install a cleanout (washers can discharge a lot of lint with the drainage water.
    Deb
    The Pipewench
Similar Threads: Washer drain
Forum Title Date
Plumbing Forum, Professional & DIY Advice, Tips & Slow kitchen sink drain now backs up into the dishwasher. Jun 21, 2014
Plumbing Forum, Professional & DIY Advice, Tips & Kitchen sink dishwasher drain help! Mar 6, 2014
Plumbing Forum, Professional & DIY Advice, Tips & How to Connect Sink, Dishwasher and Laundry Pump to One Drain Pipe? Mar 5, 2014
Plumbing Forum, Professional & DIY Advice, Tips & drainpipe behind dishwasher blocking new install Feb 23, 2014
Plumbing Forum, Professional & DIY Advice, Tips & Fixing dishwasher drain ("sweating" drain hose) Feb 12, 2014

Share This Page