This will improve not only the care the patient will receive but also help to speed up the time needed to properly diagnose and treat each case. Contact us with any questions about the benefits of medical imaging, digital imaging or questions about cost of medical digital imaging. We are happy to take the time to help improve your business and answer your questions.
Definition of expansion valve. : a valve through which liquid or gas under pressure is allowed to expand to a lower pressure and greater volume.
The expansion valve removes pressure from the liquid refrigerant to allow expansion or change of state from a liquid to a vapor in the evaporator. The high-pressure liquid refrigerant entering the expansion valve is quite warm.This may be verified by feeling the liquid line at its connection to the expansion valve. The expansion valve is designed so that the temperature of the refrigerant at the evaporator outlet must have 8 to 12Â°F (4 to 7Â°C) of superheat before more refrigerant is allowed to enter the evaporator. 2  The adjusted tension of this spring is the determining factor in the opening and closing of the expansion valve.