The Nordyne 920672A R410A Thermal Expansion Valve (TXV) is a 4-ton metering component designed for compatible R-410A HVAC systems. It regulates refrigerant flow into the evaporator coil by responding to temperature and pressure changes, helping maintain proper superheat for efficient cooling. This TXV kit is commonly used in residential and light commercial air conditioners and heat p... https://www.partshnc.com/920672a-nordyne-r410a-txv-4ton-kit