Pneumatic trailers are great for when you have materials that need to be sealed from outside air and moisture contamination. Materials hauled in a pneumatic trailer are easily unloaded through pipes with compressed air, and they are perfect for hauling a variety of construction materials such as Cement, Clay, Sand, Fly Ash, Lime, Plastic Resin Pellets, and many other dry chemicals. Some of these trailers have a bottom unloading capability as well. Unloading like a hopper trailer.
Other products hauled with pneumatic trailers would be; Magnesium Oxide, Urea, Potassium Chloride, Flour, Sugar, Grains, Wheat, Oats, Starch, Powder.