Evaporator Coil Expansion Valve
old Carrier evaporator coil needs either a new expansionA thermal expansion valve is a component in refrigeration and air conditioning
systems that ... Internally equalized valves can be used on single circuit
evaporator coils having low pressure drop. Externally equalized valves must be
used onBefore entering the evaporator coil, the refrigerant passes through the expansion
valve. This valve relieves pressure from the liquid refrigerant, which rapidlyEvaporator coils contain the system's refrigerant as it converts from liquid to gas.
The refrigerant moves through an expansion valve and into the evaporator coils.