Main Page | See live article | Alphabetical index A helical pump is one that is designed in a spiral or helix fashion. It consists of two parts: a twisted tube whose cavity is shaped like a curly noodle, and a helical rotor. The rotor turns inside the tube in such a way that one point along the helix is at the edge of the cavity, and the opposite point is at its center. This article is from Wikipedia. All text is available under the terms of the GNU Free Documentation License.