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  1. #14
    Quote Originally Posted by Andy Schoen View Post
    Having been a TEV product mangler in my past life, yes I've seen this before. It is not common, however.

    With a heat pump system in the heating mode, and if a TEV is used to feed the indoor coil, discharge pressure will be transmitted to the underside of its diaphragm via the equalizer line.

    Normally this is not a problem for the valve.

    But if a recip compressor is being used, and if the recip compressor is delivering an inordinate amount of discharge pulsations... these pulsations work on the TEV powerhead. The powerheat casing flexes ever so slightly with these pulsations as if it were a drum. The weld succumbs...

    I don't ever recall this happening when a scroll compressor is used.
    Would a muffler help?

  2. #15
    Join Date
    Apr 2002
    Location
    Ann Arbor, MI
    Posts
    2,944
    Quote Originally Posted by Freightshaker View Post
    Would a muffler help?
    Absolutely.
    The greater danger for most of us lies not in setting our aim too high and falling short; but in setting our aim too low, and achieving our mark. – Michelangelo

    There are powers inside of you which, if you could discover and use, would make you everything you ever dreamed or imagined you could become. – Orison Swett Marden

    Education is what remains after one has forgotten what one has learned in school. – Albert Einstein

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