ALCO Controls ASD 28S3 VV 3 8 ODF Suction Filter Drier

ALCO Controls ASD-28S3VV suction line filter-drier protects the compressor by removing moisture and acids from the suction line in hermetic refrigeration and air‑conditioning systems. This 28 cu in unit uses 3/8" x 3/8" ODF connections and dual-access valves (VV) for service, making it compatible with solder/ODF copper piping common in HVAC/R installations. Model ASD-28S3VV carries item number 049168 and is part of ALCO's ASD series of suction-line filters and filter-driers designed for moisture adsorption and acid removal in the suction path. It features copper ODF fittings for easy soldering and provides water adsorption capacity around 11.8 g and acid adsorption around 3.0 g. These specifications come from ASD-series product literature, which notes the unit size, inlet/outlet configuration, and dual-access design. The 3/8" ODF connections align with standard refrigeration piping practices, and the dual-access configuration simplifies service access and valve isolation when servicing the suction side.