All PVC SCH 40/STD white fittings shall be produced by Spears® Manufacturing Company from PVC Type I cell classification 12454, conforming to ASTM D1784. All injection molded PVC SCH 40/STD white fittings shall be certified for potable water service by NSF® International and manufactured in strict compliance to ASTM D 2466. All fabricated fittings shall be produced in accordance with Spears® General Specifications for Fabricated Fittings. Spears® 406-251, 90 deg Elbow Fitting/Connector, 2 x 1-1/2 in Nominal, Socket End Style, SCH 40 Schedule, Molded Method of Manufacture, PVC, White, 140 deg F, Domestic/Import: Domestic