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The Goodman B1796630 Flowrator Inlet Tube is the genuine OEM metering tube that feeds refrigerant into the evaporator coil of Goodman ARPF48601BA air handlers. The flowrator (piston-style metering device) relies on this precisely sized inlet tube to deliver the correct refrigerant charge to the coil. A kinked, corroded, or damaged tube degrades cooling capacity and can cause coil flooding or starvation.
This genuine Goodman OEM tube is sized to the exact bore and length the flowrator piston requires. Refrigerant metering is extremely sensitive to internal diameter, so even small dimensional differences in a generic tube can throw off the charge and reduce efficiency. OEM ensures rated performance.
Difficulty: Advanced — Replacement involves breaking into the sealed refrigerant circuit, brazing, and a proper evacuation/recharge. This is an EPA-certified technician task. Plan for full recovery, brazing, and recharge. Professional installation required.