Air Pressure for blowing out lines for winter

tatest wrote:
I crank the regulator on my 150 psi compressor down to 25-35 psi for this task. Blowing out one water line at a time, it is unsual for this to empty the (not very large) tank, and if the compressor has to start running, it has enough output to maintain flow at this pressure setting. For his job, what you need is air volume, not pressure, since you are blowing out open lines and not building up pressure.