Butterfly valves are normally used as shut-off valves in pipeline systems. we offers a cost-effective control valve on the basis of the proven butterfly valves for simple control tasks. These butterfly control valves are available with screw connection or welded design as well as in intermediate flange design which is easy to maintain. In order to adapt the valve to the process, actuations with three different power levels are available. The control possibilities are the same as with single-seat control valves, but they don’t reach the same control accuracy due to the design-related moment of inertia of the sealing washer/flap