Amana-Goodman B1789878 0.078" Piston Flowrator

The Amana-Goodman B1789878 Piston Flowrator regulates refrigerant flow through a properly sized 0.078-inch piston opening. The regulated restriction controls refrigerant movement through the circuit, allowing the connected evaporator or cooling assembly to receive the specified flow rate during operation in HVAC systems. The piston is seated within the designated flowrator or piston housing and aligned with the refrigerant passage before the assembly is secured. Controlled refrigerant metering maintains the intended flow balance, supports consistent heat transfer, and contributes to stable cooling performance throughout normal equipment operation.