Tank water heater- dielectric union? heat trap?

Discussion in 'Plumbing Forum, Professional & DIY Advice' started by edwardh3, Nov 23, 2008.

  1. edwardh3

    edwardh3 New Member

    Jan 5, 2008
    South Carolina
    Replacing a 40 gal electric water heater that now is connected by flex copper. The general installation instructions on the Love Page for water heater replacement do not mention heat traps - either loops or nipples. If you use flex copper lines, how much "loop" heigth do you need- do you need it on both hot and cold lines? and do you need a dieelectric nipple coming out of the tank?
  2. Master Plumber Mark

    Master Plumber Mark Master Plumber

    Feb 6, 2005
    Sensitivity trainer.. plumber of mens souls
    indianapolis indiana - land of the free, home of
    heat traps

    depending on the brand of theater you buy,

    it might already have a heat trap build into the niples comming out of the top of the heater.....

    I personally like the brainded flex connectors

    they work much better than dia-electric unioins

    I suppose if you buy a couple of 24 inch long ones
    and make a loop it would make a heat trap
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  4. SewerRatz

    SewerRatz Illinois Licensed Plumber

    Nov 20, 2008
    Chicago Illinois Licensed Plumber
    Chicago, IL
    In Illinois the flex pipe are not allowed. It must be hard piped in with unions. Now if your using copper they prefer you to use dielectric unions, or solid brass unions to connect the indifferent metals.
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