... control system;2, precise adjustment of advance and retreat knife;3, safe and effective protection device;4, multi-tooth, long ... be replaced;7, high effective seal water control system. Paper Machine, stock preparation line1. DD Series Double Disc Refiner 2. ... 25020-40040-800Power(KW)220-500250-800315-1000400-1800Consistency (%)3-5%Paper Machine, stock preparation line1. DD Series Double Disc Refiner 2 ...