A long time ago back in the dark ages I had a pipe that had a squeezy concertina type of thing in the middle with a valve. The idea was to insert one end in for instance a bareel to siphon water into another barrel. Also good of emptying fish tanks. Anyway once the ends were in the respective containers, one then squeezed the concertina bit and it then drew up the water until there was enough to start the siphon effect. Saves you sucking up dirty water etc and getting it into your mouth. Does any one know if such an apparatus still exists?