PARKER, 1/4 - 5/16 Connection Size (In.), 9 1/2 in Overall Lg (In.), Liquid Line Filter Dryer - 6X590|620 - Grainger
How Filter Driers Work - HVACR - YouTube
Amazon.com: Refrigerator Filter Dryer Set of 3, 19mm x 126mm Filter Dryer for Refrigeration, Copper Filter Drier with 3mm x 6.5mm Inner Diameter Hole : Industrial & Scientific