Self Priming Monoblock Pumpsets

What is a Self Priming Monoblock Pump & How does it work?

These are monoblock pumpsets with self priming characteristics which are generally used in homes for lifting water from underground sump to Over head Tank. The main feature of the pumpset is that it does not require priming each time when it is started. Due to its design, a self priming pump creates a vacuum space which sucks both air and water from the bottom. The air is vented out continuously till the water level reaches the pumpset. Compared to standard centrifugal Pumps, these pumps can operate without manual assistance and do not require a foot valve. They are basically a centrifugal pump with a chamber or a mechanism that creates the necessary vacuum for priming.