All mainline valves shall be resilient wedge and conform to AWWA C153 standards. Material shall be ductile iron per ASTM A536, Grade 65-45-12. Epoxy coating on all interior and exterior surfaces shall be fusion bonded epoxy, 12 - 14 mil thickness. The epoxy coating shall pass 90-Day immersion tests per CSA Z245.2098. Gate valves shall be available in spigot x bell and bell x bell models to mechanically connect to fittings or plastic pipe.