Posi-flate Series 585/586 butterfly valves feature seats and discs for application pressures up to 9.3 bar. The Posi-flate Series 585/586 butterfly valves are designed for the most severe of applications. They are ideally suited for very abrasive materials which can reduce valve life. 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. The seat automatically compensates for wear when it inflates against the disc, extending valve life considerably.
Because the Posi-flate disc only makes casual contact with the seat during opening and closing, torque requirements are substantially lower. This ease of movement also allows the disc to come to a perfect 90-degree position every time. Additionally, the smooth profile of the disc helps material flow easier and reduces build-up. For unique fail-safe monitoring, a pressure switch can be utilized to verify a perfect seal.
The Posi-flate 585/586 butterfly valves are available in a wide variety of construction materials including stainless steel and lightweight aluminum. The 585/586 valves are designed to fit PN 10 flanges, and come in sizes 80mm to 600 mm.