Detail question relating to sewage pit check valve and shut off valve.

Discussion in 'Plumbing Forum, Professional & DIY Advice' started by Longwood, Mar 27, 2007.

  1. Longwood

    Longwood New Member

    1) I am in NJ and am installing a basement bath with ejector pump. I was planning on placing a ball valve just after the check valve but was told by someone at the local box store who sounded intelligent that code does not permit a shut off valve in a waste line. Is this correct? I would like to have the ball valve there in case maintenance of the check valve is required and almost every drawing I see of basement pits show a ball or gate valve in line.

    2) The check valve I purchased states to install horizontally, but most pictures and instructions show them mounted vertically. I can do either but wondered if it makes a difference.

    background: The pit , rough plumbing under slab, and vent to roof were all done when the house was built and I am now finishing the basement. 2" abs lines for waste and vent.

    Thanks in advance.
  2. jimbo

    jimbo Plumber

    San Diego
    There are different types of check valves: ball check, swing check, etc. Some can be installed vertically. If the valve you have says horizontal, you must do that or get a different valve.
  3. Rancher

    Rancher Guest


    He's thinking of putting a ball valve in addition to the check valve. I'm not sure why it would be against code, especially if it was used only for maintenance.

    But it probably is, since one of the big box store experts said so.

  4. Longwood

    Longwood New Member

    I think the "box store expert" is probably wrong, that is why I asked here.
  5. Rancher

    Rancher Guest

    We need a real plumber, one with the UPC book on his desk to answer this one.

    Me... if it's not going to be inspected, and it makes sense... guess what I would do.

  6. hj

    hj Moderator & Master Plumber Staff Member

    Cave Creek, Arizona

    As far as I know it is not a code issue and most installation diagrams show a shutoff valve after the check valve so maintenances can be performed, especially if the check valve has hose connections which make it the "union".
  7. jimbo

    jimbo Plumber

    San Diego
    The orientation of the check valve is not a code issue at is a mechanical issue. If you have a valve which says mount horiz. only, then if you put it vertical it probably wont work.
  8. thats the best way ..always

    The expert at home depot dont know what he is talking about...

    Why in the world you not want a way to hold back
    the sewage in case the pump or check valve were to fail???

    have you ever had to change a check valve with a 10 foot pipe
    loaded with crap above that valve and no way to hold back the fun????

    Its just a nice thing to do for the next poor dumbass that has to fool with
    that system someday...and it might be you

    Get one of those plastic 2 inch full flow ball valves and install it above the
    check valve and you have done a bang up job....

    the next thing I suggest is you get one of those new

    SILENT spring loaded 2 inch check valves ....they are great
    and most customers have praised me for changeing it out
    when replaceing a sewage dont have the large clank
    throughout the house if you use the silent one...about $14.00
    Last edited: Mar 27, 2007
  9. markts30

    markts30 Commercial Plumber

    Phoenix, AZ
    I agree with the ball valve installation...
    We install a lot of sump pumps and ejectors in basements of commercial buildings and ALL of them have a check and then a ball valve...
    The ball valve is the only way you can later service the check later without getting a good dose of whatever you are pumping...
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