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Thread: mystery device

  1. #1
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    Default mystery device

    What is the brass(?) device on the vertical pipe?
    It says something about how it activates at a certain PSI and should be installed on a cold water line, which it is. At the top, in the wall, it connects to the main pex cold. At the bottom it goes into the wall. There is a powder room on the other side of the wall.
    This is new construction on slab.

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  2. #2
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    Default Re: mystery device

    Quote Originally Posted by John Arnold View Post
    What is the brass(?) device on the vertical pipe?
    It says something about how it activates at a certain PSI and should be installed on a cold water line, which it is. At the top, in the wall, it connects to the main pex cold. At the bottom it goes into the wall. There is a powder room on the other side of the wall.
    This is new construction on slab.

    Trap primer, used often for new construction with floor drains for condensate and TPR drains.


    PPP P1-500 P-1 Primer Automatic Trap Primer Valve at PlumberSurplus.com

    Bruce King, B.A. King Home Inspections, LLC
    www.BAKingHomeInspections.com
    Certified Master Inspector, Independent Inspectorwww.IndependentInspectors.org

  3. #3
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    Default Re: mystery device

    Quote Originally Posted by Bruce King View Post
    Trap primer, used often for new construction with floor drains for condensate and TPR drains.


    PPP P1-500 P-1 Primer Automatic Trap Primer Valve at PlumberSurplus.com
    Thank you Sir. As soon as I posted I started thinking along those lines.

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  4. #4
    James Duffin's Avatar
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    Default Re: mystery device

    So they put a trap primer on a sink trap?


  5. #5
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    Default Re: mystery device

    Quote Originally Posted by James Duffin View Post
    So they put a trap primer on a sink trap?
    There's a floor drain in that utility closet. The pipe seems to be going in the wrong direction, otherwise I might have thought of this on my own.

    Seems like it would make more sense to run the discharge from the primer right into the top of the floor drain?

    Here's the floor drain with the AC condensate pipe, the washer pan drain pipe and, obviously, the water heater pan.

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  6. #6
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    Default Re: mystery device

    Quote Originally Posted by John Arnold View Post
    Seems like it would make more sense to run the discharge from the primer right into the top of the floor drain?

    Trap primers are intended to connect below the floor surface, just above the trap seal:



    Michael Thomas
    Paragon Property Services Inc., Chicago IL
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  7. #7
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    Default Re: mystery device

    Quote Originally Posted by Michael Thomas View Post
    Trap primers are intended to connect below the floor surface, just above the trap seal:
    Awesome. Thanks. I'm starting to feel kinda lazy now.

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