GV 25 e GV 30 are complete medium size portable screen and mobile screenrs  which allow to obtain n.3 sizes of material in a single screening cycle. The GV plant are featured of a n.2 vibrating nets, a main unloading conveyor built in under the net (to unload the finest material) and n.2 other lateral conveyors. The GV plants can be loaded directly by the unloading conveyor of the crusher or they can be loaded by excavators or loaders. For optimizing the screening process it is possible to we can supply an extra loading conveyor to be mounted over the GV machine.