- For complete bulk material handling solutions visit Carolina Material Technologies. Mass Flow Feeding - No more operator "stirring" the stored product. Eliminate constant feed rate associated control changes. Minimize Dust. Feeder is mounted less than 3" above the making line. Feeder & cover are sealed. Adjustable Coating Width with 3Sigma's RatePlates™. Turndown Range - 100:1. Volumetric and Weight Based Systems. Unsurpassed 2-year Warranty.