4'' x 2 1/2'' Flange Ty Bend PCN Female C-TyHigh & Best Quality Product. Long Life. The 4'' x 2 1 2'' Flange Type Bend PCN Female C Type is an agricultural sprinkler fitting, typically made of high density polyethylene (HDPE) or cast iron, designed to connect a 4 inch main pipe to a 2. 5 inch sprinkler line. It features a C type female connector and a reducing bend for efficient water direction, widely used in irrigation systems. Key Features & Specifications: Size: 4 inch (main) 2 1 2 inch