Manufacturer Name: Nordyne Product Number: 669564R OEM Part Number: 669564R The Nordyne 669564R is a thermal expansion valve (TXV) designed specifically for HVAC systems that use R410A refrigerant. It plays a critical role in regulating the flow of refrigerant by responding to changes in pressure and temperature within the evaporator coil, a key part of the air conditioning syste... https://www.partshnc.com/669564r-nordyne-2ton-r410a-txv-valve