I don't think anyone has. In fact I've never heard of a "separate drive" rotary vane pump. I have seen the really large ones you can add several regulator valves to to direct them to different ponds or areas of ponds.

I have a 1/3 hp rotary vane ~4 cfms I direct to three different 1/10th acre ponds via three separate air lines.

Last edited by Cecil Baird1; 07/30/10 01:14 PM.
If pigs could fly bacon would be harder to come by and there would be a lot of damaged trees.