From the original inventors of the disk refiner, first introduced in 1955, comes the 5th generation DD® refiner, the DD®6000. Continuous improvement on features and designs of the DD series has led to the development of the most efficient and cost effective refining technology available. This innovative product offers 50% greater hydraulic capacity and 30% higher connected power than any other disc refiner available. In addition, a new patented plate design allows for even lower refining intensity and increased fiber strength development. The combination of increased capacity, power, and low intensity plate design allows larger, inefficient refiners to be replaced with the new, energy efficient design.