Just wanted to let you know that all air compressors have regulators that allow you to ADJUST the air pressure on the output side, I certainly did not mean to make it sound like you should go at it full pressure - I believe I stated that they'll have enough power to blow your lines appart, but, you can turn it down to a trickle if you want, with a rubber stopper bored in the center for the air compressor nozzle to fit as a seal on the line you're all set, and at least with an air compressor, you can put it to tons of other uses, so it's not just one piece of expensive AND overpriced equipment used once a year and collecting dust the remainder of the year. I'm trying to be a little efficient here and give you some bang for your buck.