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

Thread: Trap Primer constantly running

  1. #1
    DIY Junior Member
    Join Date
    Mar 2010
    Location
    Utah
    Posts
    2

    Unhappy Trap Primer constantly running

    I have several floor drains with trap primers connected. They seem to have a constant flow and have recently started spitting out enough water into the trap to make them gurgle from the splash. Why might this be? I have previously had very high water bills, but could never find a leak and suspected the sprinklers, but now I think it's these floor drains. Why would they need to have such continuous flow? Is there anything to adjust? I don't even know where they would be connected and hope it doesn't involve tearing up concrete floors.

    GLM

  2. #2
    Plumbing Contractor for 49 years johnjh2o1's Avatar
    Join Date
    Aug 2009
    Location
    South*East
    Posts
    1,121

    Default

    [QUOTE=GLM;250856]I have several floor drains with trap primers connected. They seem to have a constant flow and have recently started spitting out enough water into the trap to make them gurgle from the splash. Why might this be? I have previously had very high water bills, but could never find a leak and suspected the sprinklers, but now I think it's these floor drains. Why would they need to have such continuous flow? Is there anything to adjust? I don't even know where they would be connected and hope it doesn't involve tearing up concrete floors.

    Trap primers should not have a continuous flow, they should have a slow drip. They should be located at a water source next to the floor drains. Look under the sinks in the area of the floor drains. Depending on the make, you should be able to get a rebuild kit to repair them.

    John

    Last edited by Terry; 03-04-2014 at 03:10 PM.

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

    Default

    "inline" trap primers have a rubber washer seal, which WILL deteriorate and allow constant flow. The best repair for these is replacement, although you may have to find one exactly the same size to fit in the pipe run. "Side arm" ones seldom fail by constantly running. They usually fail by NOT running at all. They also require replacement, but usually any similar one will work.

  4. #4
    DIY Junior Member
    Join Date
    Mar 2010
    Location
    Utah
    Posts
    2

    Default

    I cannot locate any attachments or branches from any of the fixtures in the bathroom or the sink in the adjoining room. Could the source be inside a wall or perhaps the attic space where they branch to the drains? There are 4 drains within a 10 foot diameter across two rooms. They all have a steady trickle, with occasional, but random spurts. The various drains to not all spurt at the same time or interval. Would this suggest that they have separate connections?

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

    Default

    Normally they would each have individual primers, but there could be two on each primer if the installer piped them properly. They will usually be attached to the line going to a sink, and also usually in the wall with an access door. If they did not install the door, then you have to do some detective work and hope you can find them without making excess holes in the wall.

Tags for this Thread

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
  •