In order to ensure the efficiency and improve the working life expectancy of any Wet Blasting System, regular machine maintenance is required. 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. 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. When the compressed air is turned off or the operator stops blasting, media will make its way back into the air jet. Then when the compressed air is turned back on it will force the media out causing it to wear. You should also inspect the check valve inside the gun body that stops the media from entering the compressed air line. Replacing the nozzle and air jet regularly will ultimately save money. 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.
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. However they will still wear over time. The good news is there is a simple way to check when to change the nozzle and air jet in your system;
Nozzles
- If a 9/16” drill bit can enter a 3/8” Nozzle then it needs to be replaced.
- If a 3/4” drill bit can enter a 1/2” Nozzle then it needs to be replaced.
Air Jets
- If a 1/4″ drill bit can enter a 3/16” Air Jet then it needs to be replaced.
- If a 5/16” drill bit can enter a 17/64” Air Jet then it needs to be replace.
Guyson offers a variety of different Gun Body, Nozzle and Air Jet styles and set ups for its WBS Wet Blasting Systems. If you would like to receive more information regarding your Blast Gun as well as a step by step instruction guide on how to replace your nozzles and air jets please contact Guyson at 800-228-7894 , custsvc@guyson.com or request a quote below .
Contributors : Robert Thomson
