An air conditioner’s expansion valve controls how much refrigerant is allowed to flow from the condenser coil and into the evaporator coil. By doing so, it helps the evaporator coil to work most efficiently, allowing enough refrigerant into the evaporator coil so that the entire coil is chilled to the proper temperature. And it keeps liquid refrigerant from flowing to the compressor, by also limiting refrigerant from entering the evaporator coil once it’s chilled to the proper temperature.
Thermal Expansion Valve, Thermostatic Expansion Valve, TX Valve, Metering Device
TEV, TXV, TX Valve
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