High-vacuum pumping units

HP 40 B2

High-performance, reliable vacuum equipment is essential for successful and time-saving work in many science laboratories. The VACUUBRAND high-vacuum pumping units satisfy these needs and fulfil practical requirements, while providing high vacuum to 10-6 mbar. These pumping units consist of an air-cooled diffusion pump, a two-stage rotary vane pump as a backing pump (either RZ 2.5 or RZ 6) and all connecting parts, including high-vacuum valve, ventilation valve and a bypass line. The pumping unit HP 40 B2 with RZ 6 provides higher pumping speed in the pump down phase and is additionally equipped with an oil mist filter FO.



  • efficient - The powerful rotary-vane backing pumps generate the necessary backing pressure so that the diffusion pump can always attain its full pumping speed and an ultimate vacuum of approx. 10-6 mbar (measured with VACUUBRAND pump fluid and cold trap with liquid nitrogen).
  • fast - The pumping unit has a high-vacuum valve at the inlet and a rough vacuum line (bypass). This makes it particularly efficient for rapid evacuation cycles.
  • clear directions - Smaller experimental set-ups can be mounted directly on the pumping unit. A clearly visible, condensed operating diagram on the housing of the diffusion pump guides your use and helps prevent operating errors. The diffusion pump can only be switched on if the rotary vane pump is running. All valves and switches are operated from the front.

Product comparison


High-vacuum pumping unit
HP 40 B2
/ RZ 6

High-vacuum pumping unit HP 40 B2 / RZ 6
-1 x 10-6 --------

High-vacuum pumping unit
HP 40 B2

High-vacuum pumping unit HP 40 B2
-1 x 10-6 ---------