2BV5121 vacuum water ring pump - VVN can only use water as a working medium. Vacuum water ring pump works in systems for pumping out inert gases insoluble in water, aggressive gases or simply for discharging air (creating a vacuum). "Water ring" means that the working fluid is water. Wide use speaks of the versatility of the unit and its operational properties. Oil, chemical, paper, construction, mining, metallurgical, food, medical, etc. The device of nodes and the working chamber of the pump does not require lubrication and additional oil pumps, unlike other vacuum units. This reduces labor costs and material costs for the Customer. The rotor is coaxial with the electric motor and has a proportional shape. This prevents imbalance and ensures stable, long-term operation. When the pump is working, all important gaps in the working chamber are filled with water.