Positive Pressure Conveying Systems – Dilute-phase pressure conveying is one of the most common conveying methods for powders or granules. It’s most often used with nonabrasive, non-fragile materials that have a light bulk density common.
Vacuum Conveying Systems Dilute-phase vacuum conveying is suitable for conveying materials that tend to pack or compress under pressure, such as talc, pigment, silica, fine sugar and certain other fibrous materials, and for toxic materials that must not leak into the work place air, an inert gas such as nitrogen can be employed. This system is typically used to convey materials over short distances at low capacities.