(206) 949-5683, Top Rated Plumber, Seattle
Results 1 to 5 of 5

Thread: Kohler 3397 flapper

  1. #1

    Default Kohler 3397 flapper

    I have a problem with the flapper on my Kohler 3397 staying down. I have replaced the flapper three times in the last 2 years. (So, it isn't the age of the flapper itself)

    It seems to work for awhile. But, then it just stops on it's own with no explanation. I have replaced with the correct flapper, and now have tried two generic versions as well.

    Any ideas of why this is happening? and any solutions?
    Thanks!

  2. #2
    Retired Defense Industry Engineer jadnashua's Avatar
    Join Date
    Sep 2004
    Location
    New England
    Posts
    21,379

    Default

    Do you use anything inside the tank like one of the cleaning tablets, or any other chemicals? If so, stop!
    Jim DeBruycker
    Important note - I'm not a pro
    Retired Defense Industry Engineer; Schluter 2.5-day Workshop Completed 2013, 2014

  3. #3
    Moderator & Master Plumber hj's Avatar
    Join Date
    Aug 2004
    Location
    Cave Creek, Arizona
    Posts
    25,605

    Default flapper

    I never use the Kohler OEM flapper, always the Lavelle Korky version and never have those problems.

  4. #4

    Default

    Yes, I have tried the Korky flapper. I have also taken the styrofoam piece out of the flapper thinking that was part of the problem.

    It's almost as if there is not proper suction to hold it in place. But I can't determine why that would be. There is nothing that I can find in the path from the tank to the bowl.

  5. #5
    Moderator & Master Plumber hj's Avatar
    Join Date
    Aug 2004
    Location
    Cave Creek, Arizona
    Posts
    25,605

    Default flapper

    Without the styrofoam it will not stay open the proper amount of time. Suction does not keep it closed. The weight of the water on the top of it, pushes it closed. If it leaks there is some other problem, possibly a cracked flush valve, or a defect in the seal area.

Bookmarks

Posting Permissions

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