Description
The First Company 9EVR22-4 Thermal Expansion Valve (TXV) is a refrigerant metering component designed to regulate the flow of refrigerant into the evaporator based on system load conditions. It maintains proper superheat control to protect the compressor and ensure efficient heat exchange performance. Installed in air handling and coil assemblies, it is used in residential and light commercial air conditioning and heating systems, HVAC where precise refrigerant distribution is required for stable cooling operation. The valve helps optimize evaporator efficiency by adjusting refrigerant flow during varying operating conditions, supporting consistent system performance and reliability.









