Abstract: A blasting nozzle for a blasting apparatus includes an inlet for attachment to the outlet hose of the blasting apparatus, an accelerating portion, and an outlet portion through which an accelerated abrasive-laden jet can be ejected. The outlet portion has an interior surface that flares outwards to define a single outlet orifice but that also defines a transverse cross-section profile having at least two lobes between which is at least one splitter element. In use, the abrasive within the jet is directed by the splitter element into one or other of the two lobes within the single egressing jet. The overall effect is such that the abrasive distribution transversely across the jet is much more even than in a conventional blasting nozzle.

Abstract: A blasting nozzle for a blasting apparatus includes an inlet for attachment to the outlet hose of the blasting apparatus, an accelerating portion, and an outlet portion through which an accelerated abrasive-laden jet can be ejected. The outlet portion has an interior surface that flares outwards to define a single outlet orifice but that also defines a transverse cross-section profile having at least two lobes between which is at least one splitter element. In use, the abrasive within the jet is directed by the splitter element into one or other of the two lobes within the single egressing jet. The overall effect is such that the abrasive distribution transversely across the jet is much more even than in a conventional blasting nozzle.

Abstract: A blasting apparatus includes a pressure vessel adapted to contain a particulate blasting medium and a liquid. The vessel includes an inlet and a bottom outlet. The interior of the vessel communicates via its bottom outlet with an opening in a conduit along which conduit an entraining pressurized gas can be fed from a pressurizing gas source. A pressurizing device is provided to pump liquid from a liquid source into the vessel behind its contents in terms of its contents' outflow from the vessel through the bottom outlet. A valve is provided to control the flow of pressurized gas along the conduit. Immediately upstream of the opening in the conduit is located a venturi so that the velocity of the pressurized gas is increased as it passes over the opening thereby increasing the quantity of particulate blasting medium entrained by the gas.