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  1. #1
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    Check valve for discharge pipe



    Dear All,

    I heard that when air-cooled condenser is above of compressor, We must use check valve at discharge pipe of compressor.
    Why we should check valve ? for prevent returning liquid on top of valve plate of compressor ? Or it has other reason ?
    If we use "Inverted P trap" at inlet of condenser, It is not enough for prevent liquid migration ?

    Thanks if you help me in this topic.

    With best regards.



  2. #2
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    Re: Check valve for discharge pipe

    Yes a check valve or inverted trap should be fitted at the condenser inlet.

    This McQuay design guide might be of help to you, see page 15. http://bit.ly/2w4dsHI
    Last edited by FaultCode; 27-07-2017 at 07:55 PM. Reason: Wrong page number
    Brian, retired in Devon.

  3. #3
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    Re: Check valve for discharge pipe

    Quote Originally Posted by FaultCode View Post
    Yes a check valve or inverted trap should be fitted at the condenser inlet.

    This McQuay design guide might be of help to you, see page 15. http://bit.ly/2w4dsHI

    Thanks a lot

  4. #4
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    Re: Check valve for discharge pipe

    Refrigerant migrates to the cold place and to the lower place.
    Check valve before the condenser will stop the liquid in the condenser from migrating to the compressor discharge chamber and rist the discharge valves from braking at start up.

  5. #5
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    Re: Check valve for discharge pipe

    Quote Originally Posted by GENERALCOOL View Post
    Dear All,

    I heard that when air-cooled condenser is above of compressor, We must use check valve at discharge pipe of compressor.
    Why we should check valve ? for prevent returning liquid on top of valve plate of compressor ? Or it has other reason ?
    If we use "Inverted P trap" at inlet of condenser, It is not enough for prevent liquid migration ?

    Thanks if you help me in this topic.

    With best regards.


    This photo is your answer
    1.jpg

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