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Thread: tev operation

  1. #1

    tev operation

    if the power head becomes encased in ice. could this effect valve operation/superheat

  2. #2
    Join Date
    Sep 2002
    Location
    Virginia
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    3,163
    Quote Originally Posted by jconn View Post
    if the power head becomes encased in ice. could this effect valve operation/superheat
    Valve is designed to work in temps waaaaaaaaaaay below freezing , so no , a little ice wont hurt the valve.

    Find out why the thing is icing up.

  3. #3
    Join Date
    Jan 2005
    Location
    where it's nice and warm
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    270
    May be, May be not. It all depends on the make/model and most important power element charge.

  4. #4
    Join Date
    Sep 2002
    Posts
    2,728
    You can get an internal leak within the valve,caused by warn pushrods and packing.When this happens liquid hits the power assay.and backs off the valve.

  5. #5
    Join Date
    May 2003
    Location
    Utah
    Posts
    721
    It absolutely can effect TEV operation, particularly with a pressure limiting charge where there is only a very tiny amount of liquid in the bulb.

    If the temperature of the power head assembly drops to a temperature that is colder than the bulb location, then the charge will migrate to that colder location, leaving the bulb without any liquid to generate pressure to open the valve.

    This is one of the major drawbacks in using a pressure limiting charge.

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