Y-R Series are single barbed equal and enlarging Wye tube fittings. The equal Wye barb sizes are 1/8 inch, 3/16 inch, 1/4 inch, 3/8 inch, 1/2 inch, 5/8 inch, and 3/4 inch. The enlarging Wye barb are oriented with 2 smaller branches to a larger inlet on the bottom. Current sizes are (2)1/8 inch by 1/4 inch; (2)3/16 inch by 5/16 inch; (2)1/4 inch by 3/8 inch; 3/8 inch by 1/2 inch; 5/8 inch by 3/4 inch, and 3/4 inch by 1 inch. Available materials are Natural and Black Nylon, Glass-Filled Black Nylon, Natural and White High-Density Polyethylene, and Natural and Gray PVDF.