harbor freight pressure blaster clogs at sand/air mix valve
I am using 20/40 grit coal slag. The nozzle is just fine and the media is not getting wet. I slowly open the valve to let the media mix but after about a few minutes it just clogs up and I have to play with the valve to get it to blast again. Of course a few moments later it is just blowing out alot of air and no media. The nozzle is not clogged and non of my media is clumped as I constantly checked. Is the media/air mix valve to small? Do i need a finer media?