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Dielectric Connections

Arnold E. Clubine
Arnold E. Clubine Member Posts: 10
in THE MAIN WALL
Why can coil manufacturers braze copper coils directly to black steel headers? Does this not represent an non-dielectric connection? If the coil has a a brazed connection between the steel and the copper, is a dielectric union also required?

Can brass nipples, brass valves or epoxy coated couplings serve as dielectric connections?

Comments

  • Mark Eatherton
    Mark Eatherton Member Posts: 5,852
    Assumptions of the manufacturer...

    In order to have a complete electrolytic battery, you MUST have dissimilar metals in a highly oxygenated solution (fresh potable water). Take away any one of these components and you don't have an electrolysis problem.



    Most TRULY closed loop systems have the free oxygen removed, hence no problem with dissimilar metal mixes.



    IF there is a source of fresh oxygen (including non oxygen barrier plastic/rubber tubing), the lesser noble of the two metals will fail first. In your example, the steel would go away first.



    HTH



    ME

    There was an error rendering this rich post.

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