I came across this Davey air compressor from a neighbor. He said it was purchased from a local firestation back in 2007. It is a 20hp 220/440v 3 phase electric motor. Can pressure up to 4000 psi. It appears to be a Vane style compressor with 2 cylinders on each side for the 3rd and 4th stages. I cannot find any information online for this compressor. I contacted bargainmarge and they have never seen one either. There is no identification tags on it anywhere. The storage tank on the bottom has the year 1959 on it and 4000psi. 248 hours on it. It was last used a couple of years ago and now he wants to sell it. He said there is nothing wrong with it. Thought I would list it and see if anyone knew what it is. It is for sale. If interested let me know.