Flexicon's manual dumping station for pneumatic conveying systems collects dust created during manual dumping of powder and bulk solids from containers. The hopper is configured with a non-flow-through, pick-up adapter for introducing material into vacuum pneumatic conveyor lines. The unit features a high-velocity vacuum fan that draws airborne dust into two cartridge filters. Automatic reverse-pulse filter cleaning allows continuous operation. Solenoid valves release short blasts of compressed plant air inside cartridge filters, causing dust build up on the outer filter surfaces to fall into the hopper.