Part Number: 8.709-939.0 Cross Reference Part Number(s): 340026, 87099390 This 8.709-939.0 “The Big One” Chemical and Detergent Filter installs easily into 1/4 inch or 3/8 inch detergent line and has a check valve to prohibit back flow. This plastic detergent strainer is larger and heavier, with more filtering area than the competitors’ filters and is weighted to hold onto the bottom of the tank. Corrosion-resistant plastic, stepped to 1/4″ & 3/8″ Hose Barb.