VIGAN pneumatic equipment principle is based on conveying the products thanks to the air which handles them inside the pipes and therefore is behaving as the transport medium.

It means that at the suction nozzle and thanks to the vacuum produced by the turbo blower(s) a certain amount of air will be mixed with the free flowing products. The sufficient air speed in the pipes will maintain the products into the air flow and therefore they will be conveyed in the same way as the air.

In the central part of the equipment at the arrival of the products inside the receiving cyclone or hopper, the air will be sucked upwards into the turbine meanwhile the products will settle down into the hopper bottom or cyclone.

After being conveyed down by an airlock (rotary valve), the products will handle either pneumatically or mechanically to their final destination such as into trucks, railway cars, silos and/or storage warehouses.


Which ship size is adapted for pneumatic unloaders ?
R: VIGAN equipment range allows to unload any size of ship because mobile machines can be put on ship deck of large size vessels and large size models can have a boom with its suction pipes up to 28 meters for vessels post-Panamax size.

How to chose between VIGAN range of pneumatic equipment ?
R: See choose your machine

Which products are suitable for transport by VIGAN equipment ?
R: In most case, the products should be free flowing like cereals, nuts and beans, powdery chemicals for instance with a bulk density around 0.5 to 1.5 density but see more explanations