The Boron Carbide Venturi Nozzle with Aluminium Jacket and Rubber Sleeve (MT28418 and MT28439 series) is an abrasive blast nozzle with a liner made from hot-pressed boron carbide. The Boron Carbide Venturi Nozzle directs and accelerates abrasive in a blast cleaning system, and its venturi bore shapes the abrasive stream for an efficient blast pattern. Nozzle wear is a constant cost in blast cleaning, so the boron carbide liner, which offers chemical and wear resistance, is suited to hard abrasives such as garnet, aluminium oxide and steel grit passing through at speed.

The aluminium jacket keeps the Boron Carbide Venturi Nozzle lightweight and adds heat and corrosion resistance, while the rubber sleeve absorbs shock and helps preserve the internal liner against knocks. Each Boron Carbide Venturi Nozzle is supplied with a rubber gasket for sealing to the nozzle holder.

Sizes of the Boron Carbide Venturi Nozzle run from No. 3 to No. 8, with orifice diameters from 4.8mm up to 12.5mm, lengths from 135mm to 220mm and a 32mm entry diameter throughout. XL versions in the MT28439 series extend the length to 350mm. Nozzles are available with a 51mm Contractor thread (C part numbers) or a 32mm NPSM thread (N part numbers). The range for the Boron Carbide Venturi Nozzle conforms to PED and ASME requirements. Used in surface preparation, coatings, corrosion and marine work, and supplied by BAMR, South Africa's authorised distributor of Elcometer instruments.