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Thread: Heat trap on hot/cold lines?

  1. #1

    Default Heat trap on hot/cold lines?

    What does a heat trap look like on a water heater? Is it something that can be replaced easily? Signs of a broken heat trap? Thanks

  2. #2
    Retired Defense Industry Engineer jadnashua's Avatar
    Join Date
    Sep 2004
    New England


    I know of two types, there may be more. One contains a plastic ball. They make them for both hot and cold ports on the WH, and you must get them in the right place or you'll block flow when you open a faucet.

    The other type has a flap that springs back to prevent flow. Sometimes they are supplied with the WH and may incorporate a dielectric union. They often look like a galvanized nipple and may have an H or C or arrows on them to indicate the direction of flow.
    Jim DeBruycker
    Important note - I'm not a pro
    Retired Defense Industry Engineer; Schluter 2.5-day Workshop Completed 2013, 2014


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