I would strongly discourage you and anyone else from going with the Duda Diesel Pump that you linked. After several lengthy discussions with them about these pumps, they assured me that it was the right pump for my application.
First major issue was the advertised size. I wanted and was told that I was getting a 1 1/2" input and output pump size. Instead what I got was a 1 1/2" adapter on either side that was simply an adapter screwed into the 3/4" ports. Certainly not a 1 1/2" pump. When I called them on it, they said it is what it is and basically tough shit. I suggested that they change the way the product description was written they said, with quite attitude, " We think it's fine the way it is"
Then there's the quality issue. Ok so it wasn't going to do what I had wanted it to, gee maybe I can simply use it to pump water...should handle that right? Wrong. The impellers would jam up and seize. Had to keep manually spinning the keyed chuck to free it.
Not a good experience with Duda Diesel on any front. Ended up going with an air operated diaphragm pump (Made in the good Ole U S of A) and couldn't be happier.