Posi-flate offers butterfly valves and the Vibra-Gate valve, as well as its new gravity diverter valve. The Posi-flate butterfly valve is ideally suited for abrasive materials such as sand, feldspar, fly ash, and most other dry, granular materials. The inflatable seat design provides a better seal by utilizing air pressure to expand the seat against the disc, providing more sealing area and an even pressure distribution against the disc every time. Standard valve sizes range from 2 to 30 in., and fit both ANSI and metric flanges. The valves are available in a wide variety of construction materials including stainless steel and aluminum. Posi-flate also offers a line of valve operators and accessories including actuators and limit switches. Posi-flate, St. Paul, MN 651-484-5800 www.posiflate.com