Originally Posted by Mike Leary
Good for you, I never trusted putting serious air through a backflow assembly because of the possibility of melting/warping the check retainers.
Then your really gonna not like this, at my former company I was taught to open all the testcocks and blow air through them with the compressor, but most of them didnt get tested anyway. The cool thing is I get to suggest what we do next year, so I just have to get through this year with the roofing compressor. Funny thing is the guy I am replacing had it set to 120. I think I will stick to the philosophy that less is better as long as the job gets done. Nothing like popping a manifold by a menu board in a drive thru because the new hire isn't paying attention.