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What are dielectric junctions

Discussion in 'Plumbing and Central Heating' started by Groovejet, 1 Jan 2011.

  1. Groovejet

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    I've installed various undersink water heaters, mainly 3kw=15litres.
    They come with 2 plastic(or similar) connectors which connect the 2 1/2'' fittings on heater to the flexy's im using.
    The destructions say they are DIELECTRIC JUNCTIONS?

    What is the reason for these? I,ve bought a couple of heaters of e-bay and the dielectric junc. are missing.

    Who sells them? Part cen? Hargrieves? screwfix? or toolstation?
     
  2. doitall

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    they prevent an electrolytic reaction.

    Probably have to get them from the manufacturer
     
  3. denso13

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    They are designed to keep 'dissimilar metals' apart and keep corrosion problems to a minimum. If you are connecting the units by normal flexy's I wouldn't bother to much about it.
     
  4. Groovejet

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    Cheers fellas :)

    Im gonna just fit the flexies on the heaters in question, & probally get in touch with manufacturer at a later date.

    Thanks
     

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