Eurovacuum Products two stage oil sealed rotary vane vacuum pump
Our EVD range of double stage oil sealed rotary vane pump operate according to the rotary vane principal. The rotor is eccentrically positioned in the pump cylinder and has machined slots for sliding vanes. The centrifugal force of the rotation pushes vanes out these slots and towards the wall of the cylinder. The gas enters the vacuum pump inlet then passes through a built-in anti-suck valve that prevents the pump from rotating backwards and into the cylinder. The gas is compressed and pushed out to the second stage of the pump. The process of the second stage is the same as the first stage and it will compress the gas to an higher pressure.