Dilute Phase Vacuum System
- Typical dilute phase vacuum system where material is entrained in air stream which must be greater than the saltation velocity of the material.
- Not suited for abrasive or fragile, or very heavy materials.
- Even higher velocities than the dilute pressure systems due to “thin” air.

Advantages:
· Minimal headroom at feed point
· Ideal for conveying from multiple sources to a single destination
· Good for toxic products or where external leaks can not be tolerated
· Good for materials that tend to pack or compress under pressure (eg. Fibrous mat’ls.)
Disadvantages:
· Not suited for abrasive applications
· Not well suited for fragile materials
· Least efficient type of pneumatic conveyor due to thin (low density) air
· Not ideally suited for long distances or high capacities