Which type of pump is best suited for use with the fuel oil burner system?

The positive displacement pump is the most suitable option for use with a fuel oil burner system due to its ability to move a consistent volume of fluid with each cycle. This characteristic is essential in applications where precise and reliable fuel delivery is required, such as in burner systems, which depend on a specific fuel flow rate to operate efficiently.

Positive displacement pumps work by trapping a fixed amount of fluid and forcing it into the discharge pipe, making them effective for handling high viscosity fluids like fuel oil. This pump type can maintain a constant pressure and flow rate, which is crucial for ensuring the burner operates effectively without fluctuations in fuel supply that could lead to inefficiencies or operational issues.

In contrast, centrifugal pumps, while commonly used for many fluid transport applications, can struggle with viscous fluids and may not provide the consistent pressure delivery required in fuel oil applications. Auxiliary pumps can serve various purposes but are not specifically designed for the consistent volume requirement of fuel oil systems. Vacuum pumps are also not appropriate for this context, as they function primarily to remove air or gases from a system rather than to facilitate the movement of fuel directly into the combustion process.