A Rotary Vane Pumps is a positive displacement pump. It consist of a motor mounted with vanes which rotate inside the pump cavity. vanes slide in & out of motor & create sealing along all the edges, crating chambers that do pumping work. A consistent vacuum level is maintained through circulating oil lubrication which helps in making.
Specially treated vanes give advantage of silent operation & reduces wear & tear on stator. The unique design of lubrication system positively feeds minimum required oil to all rotating & frictional parts.