The Georg Fischer Type 244 Butterfly Valve feature a unique double eccentric design means the disc is not in contact with the seal when the valve is being operated. The result is less component wear and decreased required operating torques when compared to traditional boot-style designs. Better chemical compatibility is achieved because the inner body is the same material as the pipe. The unique Q ring design insures a superior seal with virtually any type of flange without the need for additional gaskets. Additionally, the electro-pneumatic positioner, stroke limiter, and feed back switches give flexibility for integration into a wide variety of applications.