A new class of oil-free vacuum pumps

To generate vacuum in the laboratory, diaphragm pumps have been the number one choice in pump technology. The main reasons are their chemical resistance, oil-free vacuum, and available options for solvent recovery. VACUUBRAND now offers an entire new class of oil-free vacuum pumps under the label “NT” (for NewTechnology). In fact, this new technology is evident in every detail.

For example, enhanced tubing connections have led to an even lower leak rate. Whisper-quiet operation with ultra low vibration results from the compact and patented “overhung motor” drive. Smooth and tidy surfaces make it easy to keep the pumps clean.

Above all, vacuum performance has been improved once again. All models feature increased pumping speed and better ultimate vacuum. The entry-level one-stage pumps reach an ultimate vacuum of 70 mbar at pumping speeds up to 7.3 m³/h. With additional stages of compression, the ultimate vacuum improves correspondingly, down to the new limit of 0.5 mbar, attainable with the four-stage model.

As in the past, the new generation of pumps comes in two different designs. The “aluminium” version is ideal for evacuation and transfer of non-aggressive gases. The “chemistry” version shows its strength with aggressive gases and solvent vapours.

A popular model for chemistry applications is the two-stage chemistry diaphragm pump MZ 2C NT. It delivers an ultimate vacuum of 7 mbar, and 12 mbar even with gas ballast. The two and three-stage models come with a gas ballast valve as standard.

NT chemistry diaphragm pumps are also available in ready-to-connect packages that include solvent recovery and vacuum control.