All PVC SCH 80/XH fittings shall be produced by Spears® manufacturing company from PVC type I, cell classification 12454, conforming to ASTM Standard D1784. All injection molded PVC SCH 80/XH fittings shall be certified for potable water service by NSF® international manufactured in strict compliance to ASTM D2467. All fabricated fittings shall be produced in accordance with Spears® general specifications for fabricated fittings. All PVC flanges shall be designed and manufactured to meet CL150 bolt pattern per ANSI Standard B16.5 and rated for a maximum internal pressure of 150 psi, non-shock at 73 deg F. Spears® 836-020, Standard, Adapter Fitting/Connector, 2 in Nominal, Socket x MNPT End Style, 2-7/8 in Length, SCH 80 Schedule, 150 psi Pressure, Molded Method of Manufacture, PVC, Gray, Domestic/Import: Domestic