The heart of the control valve is the trim, especially the mating parts that throttle the stream to the demands of the controller. Each process is unique in nature and demands unique flow control characteristics. The synergy between what is demanded and what is supplied by the valve can be achieved by re-shaping the valve trim to get desired valve characteristics. Here I am sharing my experience of using simulationHub Control Valve Performer app with underlying CFD technology as a tool to evaluate the valve trim design of a lift valve.