You say a rotary pump....can someone recommend a few specifically for my application? I think what I've decided to do is to put the compressor in my attached garage, run a line from there through the crawl space into the basement, and connect to the old water line. I'll have to figure out all the fittings to use, but what would you think about using a back-flow preventer after the airline connects to the PVC (old water line)? Would the compressor have any issue pushing through this?
I was also thinking about mounting the compressor up on the wall in the garage, this way there is no chance water could ever make it back to the compressor, and as long as no fitting fail my basement won't end up full of water...:-)
