... with a material discharge hopper, hoist, iris valve and an upper mobile cross bar for lifting ... designing and supplying of system and equipment for conveying, mixing, batching, feeding, dumping, packaging and other processes ... Conveyor, Bag filling system, Dump dumper, Iris valve, Fluidizer, rotary valve, slide valve, diverting valve, iris valve, conveyors, vibra conveyor, screw conveyor, drum ...