Flomatic has announced the expansion of its American Iron and Steel (AIS) complaint Model 4082 Ball Check Valve family with new 8- and 12-inch sizes. The Model 4082 Ball Check Valve is now available in a complete size range from 3 through 12 inches. Additional AIS type valves and sizes for water and wastewater applications are available. The valve is virtually maintenance free. It is designed and built to meet AWWA C508 standards. The valve is constructed of a strong ductile iron body coated internally and externally with a fusion bonded epoxy coating in compliance with ANSI/AWWA C550 standards. The maximum pressure rating is 150 PSI and the maximum temperature rating is 180 degrees Fahrenheit.