CAPTUBE (5SL22C) 2.5HP is:
»“ASSY, CAPTUBE (5SL22C) 2.5HP” is the capillary tube assembly (complete with strainer) used on Daikin / York 2.5 HP outdoor units using compressor models like RN25CV1P7 / Y5SL25C3 — basically the metering device that regulates refrigerant flow into the evaporator.
»The designation 5SL22C is the specific capillary assembly code used by Daikin / York for this size.
»This part is often listed as 2.5HP Strainer C/W Capillary Tube (5SL22C) in parts catalogues.