This pump is top, best to empty as far as the waterbed core !!! The small pump sucks even a vacuum in the waterbed mattress and emptied it completely. Filling per mattress took 14min.in claim that has not emptied lasted longer. I have the pump connected directly to the "blue original piece" and about be three to four feet to the window place in the garden. (Drill 1300 / min) I can really only advise everyone who wants to drain a waterbed without much Auzugeben money is right here.
