Tying Sewage Ejector Pump Pipe to Horizonal stack

Discussion in 'Plumbing Forum, Professional & DIY Advice' started by Wes P, Aug 25, 2020.

  1. Wes P

    Wes P New Member

    Joined:
    Aug 25, 2020
    Location:
    Eastern Sierra California
    Hello, I have installed a Everbilt sewage ejector basin system in my crawlspace and I have a few questions.
    1. I am planning to tie the ejector pipe into a double wye, where one side is the shower drain, other side is the ejector pipe, and the straight through is the vent. Should I long sweep directly into the double wye or should I go just above the wye and drop down into the wye? See photo below[​IMG] [​IMG]
    https://imgur.com/1rTceTg
    https://imgur.com/eYVRnU8
    2. Where the heck does the check valve go? My ejector pipe goes up 3ft, over 4ft, up 7ft, then ties to the horizontal sewer(stack?)

    My old basin that serviced only a washing machine had a vertical check valve as high up as possible and a p trap after that, but I am not sure that was done correctly. My new basin services washer, lav, bath, and toilet.

    Thank You so much for your help
     
  2. Reach4

    Reach4 Well-Known Member

    Joined:
    Sep 25, 2013
    Location:
    IL
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  4. Wes P

    Wes P New Member

    Joined:
    Aug 25, 2020
    Location:
    Eastern Sierra California
    Thanks Reach4 this is to tie into the existing waste/sewer not the vent system. The new bathroom and basin will have its own new vent
     
  5. Jeff H Young

    Jeff H Young In the Trades

    Joined:
    Feb 27, 2020
    Location:
    92346
    tie pump to the horizontal waste line by dumping into top (a wye on back with branch pointing up). Not on its side! check valve goes in the vertical coming off pump
     
  6. Sylvan

    Sylvan Still learning

    Joined:
    Sep 23, 2004
    Occupation:
    plumbing - fire suppression - boiler inspector
    Location:
    New York
    I like to install a check valve on the horizontal when I have an option only because of the head pressure placed against the flapper causes undo stress on the pump

    Also when servicing a check a lot of installers do not install a valve above the check so when disassembling a 4 check for example vertical waste /soil line is full and makes a mess of the work site
     
    Jeff H Young likes this.
  7. Jeff H Young

    Jeff H Young In the Trades

    Joined:
    Feb 27, 2020
    Location:
    92346
    service valve I always put on What about putting the check up higher reducing head pressure?
    I always thought a little head better than none.
     
    Sylvan likes this.
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