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    sparky2562's Avatar
    sparky2562 Posts: 1, Reputation: 1
    New Member
    		  
    #1

    Apr 28, 2012, 06:40 AM
    Dielectric pipe fittings
    What is the purpose of the plastic piece on a dielectric pipe fitting . I installed this fitting on a waterheater and damaged the plastic piece when I soldered the fitting . The fitting has no leaks but the plastic is melted does the fitting need replaced ? Is the brass part the key component in preventing the corrosion between the two dissimilar metals ?
    massplumber2008's Avatar
    massplumber2008 Posts: 12,832, Reputation: 1212
    Senior Plumbing Expert
    		  
    #2

    Apr 28, 2012, 08:16 AM
    Hi Sparky

    It is the plastic that makes the nipple dielectric... prevents electrolytic effect.

    Replace the dielectric nipple and then PRESOLDER any fittings before you install them onto the dielectric nipple.

    Good luck!

    Mark
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