Danfoss-Flomatic Valves has added 2 1/2", 3" and 4" sizes to its industrial valves, Model 816. These check valves are widely spaced and used by beverage, food, water, heating and chemical processing industries. The Model 816 valves are patented Teflon seated check valves with a size range from 1/4" through 4" in threaded, socket weld or flanged connections. Depending on body material, connection and sizes, the valves feature a rated max pressure of 600 psi and max temperature of 450 degrees F. Danfoss-Flomatic Valves. www.flomatic.com