Here is short video of the ebay pump. I went today to my friend and tried it. In Russian, we speak about the additional pieces and that obtaining the clamps from the seller is very important.. Now to have in mind that this is 7cfm pump at the same time only 0.37kw and very quiet. Its 3 phase so as you can see at the video. Definitely worth purchasing if sb is on a hunt for vacuum pump. All extra pieces are custom made.

https://photos.google.com/photo/AF1Q...jnfNiLBkTyDYMU