MV Series
MV series vacuum pumps are robust and the ideal choice for industrial applications. Models in the Marpa Vacuum MV Series are two-stage, air-cooled and direct-driven and operate with recirculating oil. Their compact design is dependable, durable and easy to maintain and install. Thanks to their air-cooling system, they are easy to install and do not require water for cooling. The pumps are direct driven and, therefore, do not need belts, and the built-in exhaust filter unit discharges exhaust air that is 99.9% oil-free.
Operating principle
Rotary vane pumps in an oil bath operate according to the rotary vane principle.
They consist of a cylindrical housing (1) with an eccentrically positioned rotor (2) and several free-moving vanes (4). The vanes are located in the rotor slots (3), and as the rotor rotates, the centrifugal force pushes them against the cylindrical wall while creating a chamber between the rotor and the cylinder (7). The volume of the chamber changes as the rotor rotates. From the inlet (5), the chamber volume enlarges and then decreases towards the outlet (6). When air enters through the inlet (5) and the chamber enlarges (7), the vanes create a vacuum. When air is pushed through the chamber and compressed, pressure is produced at the outlet (6).
