Flomatic, of Glen Falls, N.Y., has added 2-1/2??, 3″ and 4″ sizes to their industrial valves, Model 816. These check valves are widely specified and used by beverage, food, water, heating and the chemical processing industries (CPI). Model 816 valves are patented Teflon seated check valves with size range from 1/4?? through 4″ in threaded, socket weld or flanged connections. Depending on body material, connection and sizes, the valves rated maximum pressure is 600 psi and maximum temperature 450 degrees F.