Carrier EA12SC450 Thermal Expansion Valve

The Carrier EA12SC450 is a Thermostatic Expansion Valve, it is intended for use in Carrier HVAC systems that use R-22 refrigerant. This component is essentialas it measures the refrigerant flow in the system by closely regulating the amount. Constructed from bi-metal, a material that alters dimension with temperature, the TXV controls the temperature depending on the refrigerant flow in the coil. When the coil is cool, the TXV opens up even more to let more refrigerant flow and pick up heat from the living space. When the coil temperature increases the TXV narrows the opening to reduce the amount of coolant flow to prevent overcooling of the system.