Case
The most common equipment used worldwide for the unloading of trucks carrying brewing malt in breweries is the pneumatic equipment for its advantageous features like:

•    Cost of investment;
•    Contamination;
•    Environment;
•    Operation / Maintenance;
•    Breakings.

Pneumatic unloading is the cheapest method because of its low initial investment, as compared to the mechanical options. This lower cost is due to the lighter weight of the equipment, for the transportation is made through the piping which carries the air+product mixture. For example, the cost of the pneumatic unloading is 30% lower than the mechanical unloading.

One advantage of the pneumatic transportation is that the product is kept free from contamination inside the system.

To avoid legal difficulties and preserve the image of the company, environmental protection laws must be considered. The pneumatic system greatly reduces dust emission. This is a costly procedure for the mechanical system as it requires the use of hoppers for the unloading of trucks.