Carrier EA36YD057 Expansion Valve R22

The Carrier EA36YD057 is an expansion valve, an essential component of R22 refrigerant based HVAC systems. So it's a pressure regulator, makes sure that the flow of refrigerant into the evaporator coil only as much as it needs to be. The evaporator coil pulls heat from the environment air and that cooling effect is what it makes. A pressure sensing diaphragm inside the valve opens and the valve opens. The size of the opening in the diaphragm changes in response to changes in the evaporator coil pressure. It holds that there is perfect flow of refrigerant. When there is too much of a refrigerant flow, the evaporator coil often cannot absorb heat.