Emerson XBN-1019 FW-4A Thermal Expansion Valve is a precision refrigerant metering device that controls the flow of liquid refrigerant into the evaporator to regulate evaporator superheat. The valve is specified for use with R134A, R12, and R401A refrigerants, making it compatible with a range of legacy and modern systems. Identified by model XBN-1019 FW-4A, this Emerson TXV delivers automatic flow adjustment in response to evaporator conditions to help maintain stable cooling performance and system efficiency.
