What is the primary function of a lift pump?

The primary function of a lift pump is to actually lift water to the pump suction. Lift pumps are designed to move water from a lower elevation to a higher elevation, enabling it to flow into the intake of a larger pump or system. This is essential in various applications, such as well systems or drainage, where water needs to be moved from a deeper level to an area where it can be utilized.

The mechanism of a lift pump is focused on creating enough suction to draw water upward into the suction line, which then allows another pump to handle it for further distribution or processing. This function is crucial for maintaining adequate supply and pressure in water systems where elevation changes are present.

In contrast, while increasing the pressure of water, transporting water over long distances, and filtering impurities are important functions in various contexts of water systems, they do not define the primary role of a lift pump. Instead, these tasks are typically handled by other types of pumps or filtration systems designed specifically for those purposes.