bullpump
A bullpump is a type of mechanical device used to move water or other liquids. It operates on a principle that utilizes the kinetic energy of a moving fluid to lift a portion of that fluid to a higher elevation. The most common design involves a large volume of flowing water, often from a stream or river, which enters a chamber. Within this chamber, a valve system is arranged such that the flow creates a sudden pressure surge. This surge momentarily closes a discharge valve, forcing a small fraction of the incoming water through a smaller, higher-pressure pipe to an elevated reservoir. When the flow stabilizes, the discharge valve reopens, and the cycle repeats.
The bullpump requires a significant flow rate of water at a relatively low head (the vertical distance