Self priming pump and their uses

Self- priming water pumps tend to be technically centrifugal pumps which make use of a mixture of both air as well as water in order to accomplish a fully-primed pumping status. The following paragraphs will briefly describe the properties of a self-priming pump and why they’re a more attractive choice than the standard non-self- priming pump.


The centrifugal pump uses centrifugal forces to establish a pressure difference as well as facilitate a pumping result. Standard non- self- priming pumps can only operate when they’re completely surrounded by water. If there is even the smallest quantity of air present in the actual chamber then the pump is going to be air-bound. This means that it will not be able to function and also won’t have the ability to pump the water until the air is removed.

Self- priming pumps overcomes that one weak point which regular centrifugal pumps have got. Self- priming water pumps are specifically designed to be able to efficiently pump a combination of both air as well as water. This is achieved simply by mixing the air and the water together. The resulting combination can be pumped in the same way as a standard pump would pump water only. When the self- priming pump has created a combination of water as well as air, it starts to pump the mix until it has gotten rid of all of the air present and is ultimately pumping water only.

It is essential to note that while a self- priming water pump has the capacity to deal with air being present within the pump casing; it should never be started if there is no water present. Make certain that there is some water onside the casing before you activate the pump.

Let’s take a closer look at exactly how self- priming pumps work:

The priming cycle begins with the air being combined with the water via the suction line and by means of the impeller. When the air and also the water are missed together thoroughly, this mix is directed to the water reservoir by way of centrifugal forces. The air will likely then raise and only the water, which is heavier compared to the mixture of water and air, will sink back down to the impeller where it will be mixed with any remaining air. This cycle is repeated until all of the air has been dispelled from the casing.

Now that the air has been eliminated, the change in atmospheric pressure results in air-free water being forced up to the suction line. This water then is directed to the impeller and this is when the self- priming water pumps begins to pump water only. From this point forwards, the self- priming water pump pumps water in the same manner that a standard (non- self- priming) water pump does.

Self- priming water pumps possess a water tank that is included in their layout. You will not discover these reservoirs on standard centrifugal pumps. It’s this additional feature that enables the self- priming pump to recirculate water as well as perform the priming cycle.