one stage centrifugal pump: such a pump is made up of only one impeller that generates the required force to propel water. it can be perfect for smaller to medium-scale fire suppression duties.
A submersible pump is https://mohamadwwhg060430.activoblog.com/28429972/getting-my-centrifugal-pumps-fire-fighting-pumps-submersible-pumps-dosing-pumps-ro-water-pumps-chemical-pumps-to-work