COVNA Pneumatic Flanged Butterfly Valves provide you with a reliable and flexible fluid control solution. It means a double flanged butterfly valve driven by a rack and pinion pneumatic actuator to open or close. Flanged butterfly valve can be customized into ANSI standard, DIN standard, JIS standard and GN standard according to your pipeline requirements. Furthermore, flanged butterfly valve can be customized into soft sealing butterfly valve or hard sealing butterfly valve to meet your various media needs.