I have been using a compressor I removed from an old refrigerator we replaced in 1968. It is still going strong.
I used some Neoprene tubing over the outlet of the compressor and then hooked the tubing to the storage/surge tank using compression fittings.
I reinforced the Neoprene tubing - outlet pipe with a wire tie.
Every once in a while the tubing will work off the pipe; just slip it back on.

I use an old brass fire extinguisher as a surge tank with a 50 PSI pop off valve I got from Miller. I have a bit of an aversion to trying to pick pieces of surge tank out of myself if I over pressurize the tank.
The setup is a water trap, an oil trap, a straight line to the pop off valve, a 90 degree T to the tank and a second water trap, pressure adjustment and quick connect fittings. I use all the traps as I do not like to have my paint blush.

As to the compressor itself, compressors from old dehumidifiers, refrigerators, or any other thing that uses compressors work fine.
They are designed for quiet and long term operation. In long spraying sessions the quiet compressor is quite nice.

A friend worked in the lab at General Electric in Morrison Illinois. They were curious if they could use a refrigerator compressor for a test they wanted to conduct. The compressor was hooked up to an Industrial grade storage tank. The pressure got up to 650 PSI and the compressor was still pumping away and they figured that it would do the job they wanted.

In reference to all the above; keep in mind that people think I like baby chickens because they are cute, yellow and fuzzy. Naw, it is that wonderful sound they make-CHEAP-CHEAP-CHEAP

John Swanson