Pressure washer sandblasting is an interesting type that mixes abrasive with high pressured water to help abrade the surface, while keeping dust down. The abrasive dust is one of the most annoying things associated with abrasive blasting, so these are becoming popular to keep the dust down. The water prevents dust from forming and is much safer for your lungs.
Although these are similar to the type that is becoming very popular these days called the dustless sandblasting set up, they shouldn’t be confused and operate in a very different manner.
In actuality the pressure washer and so called “dustless sandblasters” are both dustless because they use water mixed in with the abrasive to control dust.
But since the market has sort of coined these terms this way, I will term the dustless sandblaster as the unit that uses compressed air, and the pressure washer blaster as the unit with a motor that only uses compressed water. Using either system is considered “Wet Sandblasting”.
Pressure Washer Sandblaster Set Ups
There are two different set ups that I have seen sold by manufacturers:
- Stand alone units– which are made specifically for blasting.
- Attachment kits– which will hook up to your pressure washer.
How it Works?
These units work in the same fashion as the siphon systems. The nozzle attachment locks into the pressure washer trigger/ gun with an additional dry hose that leads into a container of abrasive. The water leaving the nozzle creates a vacuum which sucks the abrasive and mixes with the water right before it leaves the nozzle.
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