The Daikin-McQuay 335053003 Thermal Expansion Valve is a refrigerant flow control component designed for compatible Daikin-McQuay air conditioning and commercial HVAC systems. It regulates the amount of refrigerant entering the evaporator by adjusting flow according to cooling demand and system conditions. This process helps maintain proper refrigerant pressure and temperature for eff... https://www.partshnc.com/335053003-daikin-mcquay-thermal-expansion-valvetxv-1-18-inch-x-1-38-inch-odf