I forgot to mention I got a compressor from my neighbor. It is 34 Cubic Feet per Minute. That's right, hugh volumn flow. This is a compressor that came out of a semi truck and is now mounted to a tank and runs from an electric motor. It is 220 Volt 30 amp motor. It is smooth and not loud. It just runs quielty and pumps up the tank. I've taken it to the airport for use there.