What is the expansion valve in HVAC & How it
works ????????????

Answer Posted / sastha

Expansion vales main function is reduce the pressure of
liquid refrigerant from condensor ,that refrigerant goes to
the expansion valve inlet ( small dia)and it has come out
from out let (big dia)that refrigerant will become low
pressure because it has come from small dia to big dia then
pressure will reduce pressure reduce mean temprature will
reduc after that it will vapourise .

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