The ParkProcess VenturiVac MaxSac Hopper is a system designed to move gravel, sand, anthracite, resin, salt, lime and other flowable solids. The system is intended to be used with super sack material. It includes four rubber hoses with ball valves that allow some of the feed water or water from an external source to be fed to the hopper facilitating media moving into the VenturiVac suction port. The hopper also includes a gum rubber skirt on the top of the hopper that makes a seal when the super sack is placed on top of the hopper. The materials of construction are either galvanized carbon steel, painted carbon steel or stainless steel. The eductor bodies are available in 3 in., 4 in. and 6-in. pipe sizes.