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Self Priming Pump Guide

Self-Priming Pump Guide


What is a Self Priming Pump?

A Self Priming Pump can remove air from the suction pipe before continuing with standard operating. This is often required when a pump is installed above the fluid that will be pumped, for example, above a storage tank, because the suction lift from the tank will be full of air from when the pump was last shut down.

Self-priming pumps are often compared closely to the design and operation features of a Centrifugal Pump. However, with self-priming capabilities, the pump inlet is designed to work as a vacuum for fluid and doesn’t require further liquid to enter at a later stage due to the water storage it can obtain. This also means that a self-priming pump is generally a lot bigger when compared with centrifugal pump ranges.

Which pumps from our range are self-priming?

We have 3 pump series’ within our range that have self-priming capabilities: Self-Priming Centrifugal Pumps, AODs and Peristaltic Pumps.

Self Priming Centrifugal Pump

We can supply Self-Priming Centrifugal Pumps for either industrial or hygienic applications. The pumps are very similar to the standard Centrifugal Pump range but come with a Self-Priming chamber that holds enough liquid for the level inside the casing to cover the impeller. This ensures that the pump can self-prime upon start-up and will then allow the pump to operate as a standard Centrifugal Pump. A Centrifugal Pump will not be able to self-prime if the impeller is not flooded.

The pumps in this range can create up to 4.5m suction lift and are ATEX rated.

Our Industrial Self-Priming Centrifugal Pump is ideal for liquids with some solids, water, mild chemicals, solvents and highly aerated fluids.

The Hygienic Self-Priming Centrifugal Pump is fully FDA approved meaning it is suitable for products such as flavourings, alcohol, edible oils, or juice.

For more information on how a Centrifugal Pump works, head over to our Centrifugal Pump Guide.


Diaphragm Pumps

We also distribute a whole range of Air Operated Diaphragm Pumps available in a variety of materials and options including, Metal, PTFE, HDPE, Low Energy and Sanitary.

The Diaphragm Pumps we offer can self-prime up to 5m from dry (8m from a wetted pipe). Diaphragm Pumps are a fantastic option for self-priming applications because they can pull high volumes of fluid, as well as are able to dry run without causing damage to the pump, meaning that AODs are useful for emptying tanks. The suction capability of your Diaphragm Pump will depend on the size of the pump that you purchase but all of them can be installed above the fluid.

We can supply AOD pumps with a suction pipe that has been designed for easy manoeuvrability with handles that can be moved between drums.

To find out more about our range, head over to our Diaphragm Pump Guide.

Peristaltic Pump

Peristaltic Pumps have the highest self-priming capability in our range, able to achieve up to 9.8m! The roller or shoe design of the pump compresses the hose, which is the only component of a Peristaltic Pump to come into contact with the liquid. When the hose is compressed, it creates a vacuum from the inlet port which generates the high suction lift.

A Peristaltic Pump can dry run indefinitely and the rotation of the rollers creates a constant vacuum; together this means that the pump can self-prime immediately from start-up without the need to have a flooded suction, like a Centrifugal Pump. These features also allow Peristaltic Pumps to be used for emptying tanks, as well as transferring, metering and dosing applications.

Click here for more information in our Peristaltic Pump Guide.


If you have any questions about Self-Priming Pumps or you’re looking for a quote, get in contact with our Sales Team today!

The team aims to quote within 24 hours, so what are you waiting for?

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