High pumping performance, improved ultimate vacuum:

Roots Pumping Units RP / RP VARIO

The combination of oilfree chemistry diaphragm pumps with roots pumps allows for a pumping unit series with greatly increased pumping speed and an ultimate vacuum that is improved by one order of magnitude in comparison to diaphragm pumps. VACUUBRAND roots pumping units distinguish themselves with high specific corrosion-resistance. Due to the dry, oilfree operation and high pumping speed especially in the pressure range of 50 — 0.2 mbar the roots pumping units can pump large quantities of vapour.

VARIO roots pumping units have automatic workload-dependent motor speed control. This allows for operation also at high pressure levels (> 50 mbar) with limited heat release. 

Application

• in chemical laboratories / mini-plants for distillation, drying etc.
• all "oilfree" applications with high demands, such as e.g. load lock systems, electron microscopes or mass spectrometers
• as "oilfree" backing pump for modern turbo-molecular pumps, cryo pumps and the like

Advantages

• oilfree chemistry vacuum pump
• dry running roots pump, with oilfree vacuum chamber
• high pumping speed below 50 mbar (for large vapour quantities)
• corrosion resistant configuration
• low ultimate vacuum
• fine vacuum with less backflow and contamination
• active protection of the environment: less impact on the environment, no contaminated waste oil