(206) 949-5683, Top Rated Plumber, Seattle
Results 1 to 3 of 3

Thread: Adding washing machine to drain line

  1. #1

    Default Adding washing machine to drain line

    I have a drain 1.5" line with p trap from the kitchen to the exit 2in pipe. There is also a dish washing machine plumbed into the sink drain line.
    I am adding a clothing washing machine beside the dish washer and would like to plumb into this line.
    SHOULD I add a 2nd dedicated drain line from the clothing washer to the exit down line to sewer OR can I tie into the existing line?

  2. #2
    In the Trades Gary Swart's Avatar
    Join Date
    Sep 2004
    Yakima WA

    Default Washer drain

    A clothes washer requires a 2" drain. The sink and dw drain is only 1-1/2", so you'd be open for real problems. Add a 2" trapped standpipe for the clothes washer.

  3. #3
    Plumber Deb's Avatar
    Join Date
    Sep 2004

    Default Deb

    Actually, the kitchen sink drain should also be 2", so it is already undersized. The washing machine drainage must be done correctly. The p-trap should be 6-18" off the floor. The standpipe 18-30" in height. This must also be vented through the roof or tie in with another vent 6" above the flood rim level of the fixture. Install a cleanout--lint can be a problem in washing machine drainage lines.
    The Pipewench


Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts