Nordyne 669822R 4-Ton Thermal Expansion Valve (TXV) R-410A

The Nordyne 669822R 4-Ton Thermal Expansion Valve (TXV) which is used in HVAC systems which uses R-410A refrigerant. A TXV is a essential part of HVAC systems it controls the amount of refrigerant that gets into the evaporator coil. It works through measuring the leaves temperature and pressure of the refrigerant and varies the opening of the value with it. This is particularly essential with R-410A systems this refrigerant works at higher pressures than the earlier refrigerants such as R-22.