The vacuum blasting equipment operating principle is shown here in diagrammatic cross section. The arrows marked in green indicates abrasive flow that is pressure fed from the pressure vessel / abrasive tank (a) to the blast gun (b) and it is vacuum recovered via vacuum hose to the reclaimer unit (c). The gun body is specially designed to hold blast nozzle as well as the recovery hose. A nylon brush surrounds the gun body to prevent the escape of abrasive and dust. The blast gun remains in close touch with the surface to be cleaned.