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.