Self Priming Pumps

In many applications, a pump has to be placed above the level of the liquid, for example, when emptying an underground storage tank.  At start-up, there will be air in the suction line and before the pump can discharge the liquid, this air must be evacuated or displaced.  Pumps are optimised to move a particular liquid; evacuating a gas is a very different challenge.

For these applications, a pump is ideally required to evacuate air from the suction side during startup before transitioning to its normal pumping mode. Such pumps are known as self-priming. Certain pumps, like gear pumps, are inherently self-priming by design.

We offer a wide range of self-priming gear pumps, including large industrial internal gear pumps for viscous liquids, stainless steel external gear pumps for precision applications, and micro annular gear pumps for extremely precise flow control. 

For more details of our range of gear pumps please click here. 

See below for our range of more specialised self-priming pumps:

Manufacturer	Pump Type	Typical Applications	Flow Range
Finish Thompson Inc	Centrifugal	Waste water, acids and alkalis,	up to 45 m³/hr
SAWA	Side-Channel	Wine, beer, milk loading/unloading	up to 70 m³/hr
SAWA	Hybrid Centrifigal	Wine, beer, milk loading/unloading, ultrapure water, alcohols, perfumes.	up to 70 m³/hr
Dickow	Side-Channel	Flammable & corrosive liquids, tank unloading	up to 50m³/hr
Dickow	Multistage centrifugal	Flammable & corrosive liquids, tank unloading	up to 190³/hr
Viking Hygienic	Lobe	Food & drink, pharmacutical, personal care	Up to 189 m³/hr
FTI Air	AODD	Simple, reliable transfer of a wide variety of liquids	Up to 900 l/min

 

For a more detailed explanation of how self-priming pumps work, please visit the 'Useful information on Self-Priming Pumps' page.