Embodiments of the invention provide a choke valve that includes a valve body, a stationary disc, a rotating disc, an actuator system, and a wear monitoring system. The valve body defines an inlet and an outlet. The stationary disc includes a bean and defines a passageway arranged between the inlet and outlet of the valve body. The rotating disc is arranged adjacent the stationary disc and is movable between an open position and a closed position. The actuator system is coupled to the rotating disc and is arranged to actuate the rotating disc between the open position and the closed position. The wear monitoring system includes a port in communication with a depressurized cavity formed between the valve body and the bean, and a pressure sensor that monitors a pressure in the depressurized cavity.