Description
The Copeland Comfort Control (Alco) 055878 Thermostatic Expansion Valve is a 1/2-ton refrigerant metering part for HVAC and refrigeration systems. Featuring 3/8″ x 1/2″ ODF connections and a 5-foot capillary tube, it regulates the flow of cooling fluid into the evaporator based on temperature and pressure conditions. This valve support maintains proper superheat, ensuring efficient heat absorption and preventing liquid refrigerant from reaching the compressor. Commonly installed in air conditioners, heat pumps, and commercial refrigeration units it plays an essential role in system, supporting stable operation, energy efficiency and compressor protection.









