I have one of these compressor pumps also. I have not been able to find out much about it. Mine came attached to a Century Electric 1/2 hp repulsion start induction rum motor. Both are in exellent condition. I listened to the compressor run on your Youtube post and mine sounds identical. I was told ic came from a ac unit some where. I found it tossed in the corner of a boat yard and talked them into letting me take it.