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The Pneumatic SWECO In-line Sifter is used to sift dry flowing material. It can also be used to segregate smaller particles from larger particles, and to remove foreign matter. It screens dry material only while being pneumatically conveyed. The PSI™ sifter includes an air by-pass system to provide equal pressure on both sides of the screening surface. Typical applications include: flour, starch, salt, sugar, and plastics.