Nordyne 664073R 0.073" Piston

The Nordyne 664073R 0.073" Piston controls refrigerant flow by metering the amount of liquid refrigerant entering the evaporator for the cooling process. Refrigerant passes through the precisely sized opening, creating the pressure differential required for proper expansion before circulating through connected cooling circuits. Integrated between the liquid line and evaporator, the piston establishes the required flow restriction across the HVAC equipment under varying operating conditions. Controlled refrigerant metering stabilizes system pressure, improves cooling uniformity, minimizes flow fluctuation, maintains balanced operation and ensure dependable thermal performance.