Products 
Rotary Valves 
When capacity and performance are the requirements rotary valves are the answer.  Popular rotary products include butterfly, eccentric plug, full bore pipeline, high performance butterfly and segmented ball. 
Baumann 21000Butterfly Valves
Butterfly valves provide outstanding performance under extreme pressure and temperature conditions. They are available for a variety of throttling or on/off applications.
Fisher CV500Eccentric Plug Valves
The eccentric plug rotary control valve features an eccentrically mounted plug or ball, which combines rotary valve efficiency with globe valve ruggedness.
Fisher V260Full Bore Pipeline Ball Valves
Full- or reduced-bore ball valves provide a solution for throttling and severe service applications in gas transmission lines, gas distribution, or liquid pipelines.
Fisher CONTROL-DISKHigh Performance Butterfly Valves
Fisher High Performance Butterfly Valves feature an eccentrically mounted disc and are known for their wide application range and shutoff capability.
Vee-Ball V150Segmented Ball Valves
Vee-Ball is a segmented ball valve which features a patented contoured segmented V-notch ball.
Quick Links 

Brochure on tests of rotary valves