Heat trap on hot/cold lines?

Discussion in 'Water Heater Forum, Tanks' started by kenhreed, Jul 8, 2009.

  1. kenhreed

    kenhreed New Member

    Jul 1, 2009
    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. jadnashua

    jadnashua Retired Defense Industry Engineer xxx

    Sep 2, 2004
    Retired Systems engineer for defense industry.
    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.
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