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The Goodman B1796630 Flowrator Inlet Tube is the OEM refrigerant metering tube used in ADPF304216AB evaporator coil assemblies. The flowrator (piston-style metering device) tube delivers refrigerant to the coil at the precise rate the system was designed for — a damaged, kinked, or wrong-size tube causes poor cooling, frosting, and compressor strain.
The OEM B1796630 is sized to the ADPF304216AB coil's exact metering specification. Substitute tubing with the wrong bore or length alters refrigerant flow and undermines capacity and efficiency. The factory tube ensures proper braze fit and metering accuracy.
Professional / Advanced. This part is in the sealed refrigerant circuit. Installation requires recovering refrigerant, brazing, evacuation, and recharge — work that must be performed by an EPA 608-certified HVAC technician. Not a DIY part.