All PVC schedule 80 fittings shall be produced by Spears® manufacturing company from PVC Type I, cell classification 12454, conforming to ASTM Standard D1784. All injection molded PVC schedule 80 fittings shall be certified for potable water service by NSF® International manufactured in strict compliance to ASTM D 2467. 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.