Liquid Ring Vacuum Pump Working Theory. The vacuum pump consisting an impeller which is situated eccentric to the cylinder body(Vacuum pump casing). Vacuum is created in the vacuum pump by using a liquid seal. … When the impeller Water Vacuum Pump starts to rotate, the liquid is begins move outward by centrifugal power.
Water ring vacuum pump is a common type of liquid band vacuum pump. Water band is certainly a rotor with multi-blades eccentrically installed in the pump shell. When it rotates, it throws liquid in to the pump and forms 
a liquid band concentric with the pump shell. The liquid band and the rotor blade form a rotating variable capability vacuum pump with periodic quantity change. When the functioning liquid is drinking water, it is called water Band vacuum pump. There are numerous kinds of water band vacuum pumps with different prices. .Among them, 2BV is more cost-effective. The type selection of water ring vacuum pump ought to be based on your on-site process, the required vacuum level and the amount of air pumping required.