At work, we have a huge pressure washer that we acquired 1.75 years ago. It has a very large electric motor, a heavy cord is on it that looks like a welder power cord and the pump looks like a pump that would be used in a self-service jet-spray car wash. It also has a diesel or kerosene fired heater so that one could hot pressure wash. We entertained the idea of converting it to a wet soda blaster. It is so heavy that I thought about building a road worthy utility trailer under it and a raise up roof to protect it. I'll get a picture later when I do go to my shop.
Also the neighbor next to the shop has bought old stuff at equipment auctions has a piece of equipment that at first glance it looks like a sandblaster but when you take a closer look at it, it is some kind of roof or parking lot coating piece of equipment that has its own high pressure Co2 tank, that looks like a fountain drink Co2 tank, I'll get a picture of it too and finally tell him that I'll take it to convert to another sandblaster.
Jim, I'd be interested in knowing more about the bottom of the sandblast tank valve that you are referring to.
@WORTH That's a good idea using an electric solenoid air valve on the supply. That with a foot pedal switch or an electric push button "dead man" style handle trigger would work for on and off.
