Hybrid Vacuum Pump for condensable and corrosive vapours

Rotary vane vacuum pumps are frequently used to generate a vacuum in the range of 1 mbar to 10-3 mbar, such as in freeze drying or vacuum distillation. However, the condensable and corrosive vapours generated in such processes may lead to serious malfunctions of these oil-sealed pumps. Often the oil is irreversibly contaminated, and vital pump components suffer from corrosion attack.

An effective corrosion reducing strategy has been implemented in the new VACUUBRAND Chemistry Hybrid Pump RC 6. It is based on its predecessors RC 5 and RC 4, proven in laboratories for many years. It basically consists of a combination of a two-stage rotary vane pump, and a chemistry diaphragm pump built of corrosion-resistant materials.

This is how it works: The diaphragm pump evacuates the oil case of the rotary-vane pump, reducing the partial pressures of solvent vapours, oxygen and corrosive gases. When used as intended, the vapour pressures of most common solvents remain below their saturation point. Thus, no condensation takes place inside the oil-sealed part of the pump. Less condensation means less corrosion and cleaner oil for longer periods of use, and a significantly reduced amount of waste oil.

The Chemistry Hybrid Pump RC 6 incorporates the new XS rotary-vane pump module – whisper-quiet in operation and easy to maintain. The new bi-material chemistry diaphragm pump provides highest mechanical and chemical stability.

The vacuum indicator for the operating vacuum inside the oil case also serves as maintenance alert for the diaphragm pump. The new motor with electronic startup is designed for minimal current draw.