Description
The Emerson Flow Control (Alco) 066979 Thermal Expansion Valve (TXV) HFESC-1/2 BA is a refrigerant metering part that controls flow into the evaporator based on equipment demand within HVAC systems. It operates by sensing temperature and pressure changes to adjust refrigerant feed, maintaining proper superheat and system balance. The valve is configured for use in refrigeration and air conditioning circuits, with a 1/2-inch connection size and HF series design that supports controlled capacity and pressure conditions. Installed in the liquid line near the evaporator, it regulates cooling performance and supports stable system operation.
