The Butterfly Valves are widely used in opening / closing the flow in the system. The butterfly valve is a compact and light weight valves, no maintenance required. Butterfly valve is a rotating valve in 0-90 deg. The valve operator can be Hand Lever, Gear Operator, Electric Actuator and Pneumatic Actuator. So, it is popular in Production Line, Cooling Tower System, Water Supply System and etc. Kistler Butterfly Valves are available both Wafer and Lug type. The Wafer type can be installed for all flange connection standards.