Lobe

Rotary Lobe pumps are similar to gear pumps in that the pump operates by two Y or I shaped lobes which are aligned vertically rotating within a pump casing. The timing is controlled via a gearbox and timing gear which prevents the lobes from making contact with each other. 

Lobes rotate within the pump casing creating a vacuum enabling the pump to be self-priming 6M, as well as handling gas slugs. 

The lobes create flow by creating exposed cavities for the liquid to flow into, which then rotate towards the outside of the pump casing and expelled through the outlet of the pump. Liquids do not pass between the lobes, but between the lobes and outside casing before exiting through outlet ports. Inlet & outlets on the pump can be configured horizontally or vertically. 

Learn more about Lobe Pumps from North Ridge Pumps.