Well guys, I really don’t want to stand here and start hookin’ with ya but if you looked at the link that I posted you can plainly see that a brass ball valve will only last about 15min before the media will eat through the side. It’s pretty simple, when you shut the ball it diverts the abrasive toward the side of the brass, brass is quite soft and in a few minuets you have a hole through the side, I have the proof.
The weak spot in the deadman gun from Northern Tool is the rubber stopper. It’s in the path of the abrasive stream and it will need to be replaced after an hour because it will erode away and you will not be able to shut it off.
Once again, I’m rigging a ball valve next to the nozzle with two lines taped to the feed hose. I’m going to break the air line before it picks up the media. That way I will be able to control the feed pressure with a valve that is not in the blast stream.
I’m done with the subject for now! I’m satisfied with my findings and moving on to other things.
Denny Graham
Sandwich, IL.
