CN8 series eccentric rotating control valves plug's geometric center deviates with rotation axis, which can reduce the seat abrasion and extend the lifetime of the product. The flow guiding wing at the plug's back is good for stabilize fluid flow, so it has excellent stability. In addition, it has large flow capacity and wide rangeability. It is especially suitable for the control of those slurry fluids susceptible to clogging. CN series are characterized by compact structure, large output torque, effective handle and long lifetime.