Any one if its powered and configured right
Study the veturi effect
You will probably note the specs listed for just about any 2 head recirculating aspirator pump read something like
1 pump head 20mbar @20 degrees Celsius 15 lpm flow rate. The horse power of the pump is probably listed as well.
Why would anyone pay $1800 for a pump that is barley good enough for vacuum filtrations? $150 and a trip to Harbor Freight can handle that .
Well i guess if your shopping for one the manufacturer just assumes the buyer knows how these things work and are able to make the calculations in order to determine its peak performance and figure optimal configuration to suit their needs.
What about 2 heads in parralel? In series? Whats that give you? How about 4 heads?6? How do these different configurations effect flow rate? Pump head capacity?
What does the 20 degrees have to do with anything? What would 10c do, more or less vacuum? 5c? How about 40c?
What moves faster hot or cold water? How powerful of a bilge pump do you need to move water fast enough and what temperature does the water have to be to be able to move that fast? Another peripheral device I failed to mention that would be required would be some kind of chiller recirculator so as to keep a constant consistent temperature. So to anybody interested if you don't already have one of these well that would probably more than triple the total cost. Keep in mind all that heat coming from your distillation is going into the reservoir
Sorry for answering your question with a bunch of other questions. There is a way-2 chart or graph this out it's possibly available online or you can figure it out yourself and draw your own curves and see where the dots land. Sorry I do not have time to find this for you right now