If a 1/4″ drill bit can enter a 3/16” Air Jet then it needs to be replaced.If a 3/4” drill bit can enter a 1/2” Nozzle then it needs to be replaced.If a 9/16” drill bit can enter a 3/8” Nozzle then it needs to be replaced.The good news is there is a simple way to check when to change the nozzle and air jet in your system The Nozzles in the WBS Wet Blasting Systems are made from an ultra-wear resistant Boron Carbide material and the Air Jets are all polyurethane covered to maximize their usage. If either of these items wears too much the media will start to erode the gun body and the gun body will cost more to replace than the Nozzle and Air Jet combined. Replacing the nozzle and air jet regularly will ultimately save money. You should also inspect the check valve inside the gun body that stops the media from entering the compressed air line. Then when the compressed air is turned back on it will force the media out causing it to wear. When the compressed air is turned off or the operator stops blasting, media will make its way back into the air jet.
The Nozzle is the area within the system where the media rich slurry comes into contact with the compressed air and whenever the media comes into contact with a surface at maximum velocity it is going to cause maximum wear.
One of the biggest areas that are most prone to wear in a Wet Blasting System is inside the Blast Gun, the Nozzle and Air Jet in particular. In order to ensure the efficiency and improve the working life expectancy of any Wet Blasting System, regular machine maintenance is required.
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