Scroll vacuum pumps consist of both a set and an orbiting scroll. As the orbiting scroll movements, voids are created at the inlet of the pump, drawing in the gas. As the rotor additional moves, the gas is usually steadily compressed until it really is discharged to atmosphere at the pump exhaust.

The scroll pump design provides 100% oil-free operation as it does not require any lubrication. The bearings are separated from the compression chamber so no contamination of the pumped gas is possible. In Scroll Vacuum Pump addition, the leak-tight design helps prevent contamination of the pumped gas by ambient air flow. Maintenance is bound to changing the scroll tip seals which may be quickly completed by the operator and with no need for special tools.