The eccentric plug rotary control valve features an eccentrically mounted plug or ball, which combines rotary valve efficiency with globe valve ruggedness. The Fisher^? V500 is designed for severe and/or erosive service and features sealed bearings, an oversized one piece valve shaft and a variety of replaceable wear resistant trims ranging from SST to Ceramic. The Fisher CV500 features the same ruggedness of the V500 but uses a segmented ball as the control member rather than a plug. The CV500 has higher capacity than the V500 and features an equal percentage characteristic for better control performance.  Both of the valves feature a splined valve shaft, which provides zero lost motion when coupled to a Fisher rotary actuator.