Double Piston Screen Changer

The Double Piston Screen Changer is a continuous melt filtration system primarily used in plastic extrusion to remove contaminants without interrupting production. It features two pistons, each containing a filter screen cavity, which operate alternately. The polymer melt is divided and flows through both screens simultaneously during normal operation. When a screen change is needed due to clogging, one piston is hydraulically moved out for replacement while the other remains in the melt flow, ensuring continuous processing with minimal pressure fluctuation. This design provides a larger filtration area and is crucial for maintaining consistent product quality and maximum uptime, making it suitable for high-output applications across various polymers and products like pipe, film, and recycling.