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GENERALCOOL
27-07-2017, 07:09 PM
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.

FaultCode
27-07-2017, 07:42 PM
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

GENERALCOOL
28-07-2017, 08:58 AM
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

chemi-cool
28-07-2017, 09:20 AM
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.

A.Mortezania
02-08-2017, 05:48 AM
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
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