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The B1796630 is a genuine Goodman flowrator inlet tube used on ARPF30301BA evaporator coils and matching fan-coil assemblies. This short metering tube connects the liquid line to the flowrator (piston) metering device that feeds refrigerant into the coil. A kinked, corroded, or damaged inlet tube restricts flow and degrades cooling capacity, so replacing it with the correct OEM tube preserves the system's designed refrigerant flow.
OEM tubes are pre-formed to the exact length and bend radius for the coil, ensuring a clean brazed joint and proper alignment. Generic copper stock must be cut and bent by hand, risking restrictions. The OEM B1796630 drops in without guesswork.
Advanced — Requires recovering refrigerant, brazing, evacuation, and recharge. This is a job for an EPA-certified technician.