Another source of good compressors can be found in old junked travel trailers from the 60's and 70's. Back then, the water systems were pressurized with air compressors which pushed the water thru the pipes. Trailers have since abandoned that practice and now use electric water pumps to move the water. I got an excellent 12V pump free for just removing it. I discovered it needed a new piston but the cost was minimal and I have an excellent air compressor. Much better than the cheap ones found in stores today.

Boone