Retrofit3D has been developed to eliminate problems in control valves without the need to replace the entire valve. Essentially, Retrofit3D is an engineered trim solution customized to each specific application and process, that fits into the existing valve body without the need to change the body and top works. The guiding principles of their design remain the same as those of DRAG® technology, which is to provide a tailored solution addressing the root cause of the issues. The multi-stage, multi-path DRAG® trim directs fluid through a tortuous trim to incrementally reduce the differential pressure. The DRAG® trim limits velocity head at the trim to eliminate erosion, vibration, and noise problems associated with the valve.