... frame complete with a material discharge hopper, hoist, iris valve and an upper mobile cross bar for lifting of ... 7.62 m) of load cell cable. iris valveRELIABLE VALVE TO CONTROL THE GRAVITY DISCHARGE OF FREE-FLOWING DRY ... screw Conveyor, Bag filling system, Dump dumper, Iris valve, Fluidizer, rotary valve, slide valve, diverting valve, iris valve, conveyors, vibra conveyor, screw conveyor, drum dumper ...