Maag Backflush screen changers are based on the proven double-piston design which operates without any mechanical seals and is equipped with four screen cavities. This design is used mainly in recycling applications. Due to its fully automatic backflush function screen service life is maximized and the level of automation of the entire system is increased. Reduced operating costs and an enormous system availability are the main characteristics of this series. The sturdy construction guarantees reliable and leak-free filtration and backflush performance of polymer melts for many years.