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The Goodman B1796630 is a factory-original flowrator inlet tube used on ADPF182416AA evaporator coils. It carries liquid refrigerant from the line set into the flowrator (piston-style metering device) at the coil inlet, where it's distributed to the coil circuits. Correct tube length, bend, and bore are critical for proper refrigerant feed—a kinked, corroded, or mismatched tube causes feed imbalances, frosting, and capacity loss. The OEM tube guarantees the right geometry and braze fit.
Generic tubing requires field-bending and cutting that risks kinks, contamination, and incorrect bore size, all of which disrupt metering. This genuine Goodman inlet tube is formed to the coil's exact dimensions and braze points, so it seats and solders cleanly while preserving the factory refrigerant feed.
Advanced (4/5). Replacement involves recovering refrigerant, brazing connections, pulling a vacuum, and recharging—work that requires EPA Section 608 certification and proper tools. This part is intended for licensed HVAC professionals. Always follow recovery and evacuation procedures.