The Emerson Flow Control (Alco) 063649 5-Ton Thermostatic Expansion Valve is a precision refrigerant control component designed to regulate refrigerant flow into an evaporator. It works by sensing evaporator outlet temperature and adjusting the valve opening to maintain proper refrigerant superheat, supporting efficient heat transfer and compressor protection. Commonly used in compati... https://www.partshnc.com/063649-emerson-flow-control-alco-38-x12-odf-aae-5ton30-capr22