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In this video, you'll learn what causes rotary lobe pump to move liquid through a process. Visit vikingpump.com for more videos!

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One of the most common pump types in the food and pharmaceutical industry is the rotary lobe pump. Viking’s line of hygienic pumps by Wright Flow Technologies includes lobe pumps, with model sizes and designs to cover a wide range of pumping applications and hygienic requirements.

Lobe pumps are similar in pumping action to external gear pumps but differ in that the rotors are driven independently on 2 rotating shafts. A pair of external timing gears ensure that the rotors do not contact.  

As the rotors turn, a cavity is formed at the inlet side of the pump. This creates a vacuum to pull the liquid into the spaces between the tips of the lobes. This liquid is trapped between these lobes and the closefitting casing wall. The rotation of the rotors carries the liquid around to the outlet side of the pump. The liquid does not pass between the rotors.

At the outlet, the meshing of the lobes forces the liquid through the outlet port.

Because of the large pumping cavities and noncontacting design, these pumps are ideal for the gentle handling of both thin and viscous liquids and liquids containing large solids. They are designed to be easily cleaned, making them ideal for applications requiring sanitary construction and frequent cleaning.