Which type of pump is most suitable for transferring fluids against low pressure?

The centrifugal pump is particularly suitable for transferring fluids against low pressure due to its design and operational principles. It uses rotational energy generated by a rotating impeller to impart kinetic energy to the fluid, which converts to pressure energy as the fluid moves through the pump and into the discharge line. This mechanism allows centrifugal pumps to efficiently handle large volumes of fluid and achieve moderate increases in pressure, making them ideal for applications where resistance to flow (like pressure) is low.

Centrifugal pumps are generally favored in scenarios where continuous pumping of large quantities of fluid at low to moderate pressures is required. They perform well for liquids with lower viscosities and are self-priming in many designs, which adds to their versatility.

Other options, though functional in certain circumstances, cater to different pumping needs. Positive displacement pumps, which include types like gear or diaphragm pumps, operate by trapping a fixed amount of fluid and forcing it into the discharge line. They tend to be better suited for higher viscosity fluids or situations requiring high-pressure delivery. Diaphragm pumps, similar to positive displacement pumps, use a diaphragm to create a vacuum and draw in fluid, but they are not typically as effective in transferring fluids at low pressure compared to centrifugal pumps. Gear pumps also fall into