Pumpen refers to the process of moving fluids, such as water or air, from one place to another using a mechanical device called a pump. Pumps are commonly used in various applications, including irrigation, water supply, and industrial processes. They can be powered by electricity, engines, or manual operation. There are different types of pumps, including centrifugal pumps and positive displacement pumps, each designed for specific tasks. Centrifugal pumps use rotational energy to move fluids, while positive displacement pumps move a fixed amount of fluid with each cycle. Understanding these types helps in selecting the right pump for a given application.