Mapner - Model VAC -Side Channel Pumps

Our SEM/VAC rotary piston vacuum pumps belong to the positive-displacement machines family. The symmetrical three-lobe pistons rotate in opposite directions without any surface contact. They are synchronised by means of high precision gears. During rotation at the intake stage, a space of increasing volumetric flow capacity is generated. For controlling the vacuum level and maintaining the acceptable thermal conditions in service, the machine has been fitted with an automatic overpressure valve which provides air recirculation, thus avoiding extreme differential pressures from developing in the core of the pump.