Our SDR 35 gasketed sewer fittings are designed for maximum performance in the most demanding environments along with ease of installation. Heavy duty reducing branches utilizing a minimum of SDR 18 wall thickness are used in injection molded 8, 10 and 12 in tees, wyes, and tee-wyes to reinforce the strength of important branch intersections. A robust, high performance gasket protects the system by preventing infiltration and ex-filtration. Special features are incorporated to facilitate assembly, an extended pre-alignment lead in which aids in the proper placement of pipe and fittings and our square pipe stop which resists pipe push-through from over insertion. Our backwater valves are designed to be integrated with this series.