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The Goodman B1796630 is a genuine OEM flowrator inlet tube engineered for the ADPF486016AA evaporator coil / air handler assembly. This copper inlet tube routes liquid refrigerant to the flowrator (metering device) at the coil inlet, ensuring correct charge delivery and consistent cooling performance. Using the factory tube preserves the original braze geometry and flow path your system was designed around.
Unlike universal aftermarket tubing, this OEM tube arrives pre-formed to the exact bend radius and length for the ADPF486016AA, eliminating guesswork on field bending and reducing the risk of restricted flow or kinks. Generic replacements often require re-flaring or adapters; the genuine Goodman part brazes in cleanly the first time.
Advanced / HVAC technician recommended. Replacement requires recovering the refrigerant charge, brazing the new tube in place, evacuating the system, and recharging to spec. This is not a DIY repair — it should be performed by an EPA 608-certified technician.