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Multi-stage roots vacuum pumps designed for quiet and clean environments

Dry multistage roots vacuum pumps

The ECODRY plus is a family of dry-compressing multi-stage roots vacuum pumps, which sets new standards in noise reduction. The pumps have been specially designed for use in quiet and clean environments, such as analysis and research laboratories. 

ECODRY plus small dry pumps provide clean vacuum at maximum pumping speeds of 25 to 55 m³/h while maintaining low noise levels. They deliver stable vacuum performance for many years without maintenance. 

These vacuum pumps are based on the multi-stage roots pumping principle with two rotors turning in opposite directions in a single pump housing. The rotors do not get into contact with one another, or with the pump housing making them both quiet and clean pumps. 

Through their rotation, they convey the gas from the intake flange on the upper side to the outlet aperture on the bottom of the pumping chamber. Several pumping stages are arranged in series to achieve a high compression ratio. 

The pump’s operating range extends from the medium vacuum range to ambient pressure. Short channels between the compression stages, combined with a very high rotational speed, enable a compact package with high pumping performance. The pumping chamber is oil-free allowing clean vacuum generation.

Check out the advantages!

Fast pumps with quiet operation

With high speed from high pressures down to ultimate vacuum your vacuum system pump-down times are significantly shortened. The low ultimate pressure of down to 0.01 mbar makes the ECODRY plus perfectly suited for Ultra High Vacuum (UHV) systems. The rotors’ high manufacturing quality guarantees that the pumps will run with a low level of vibration. Consequently, also with a low level of noise, even at high inlet pressures. Efficient noise insulation is integrated within the pump housing, to shield the user from residual noise. The silencer integrated within the exhaust further serves to minimize noise, even at high gas flow rates. Combining these features achieves a low noise level of less than 52 dB(A) - meaning they are quieter than a normal conversation.

Clean and environmentally friendly

Thanks to the oil-free pumping chamber, no lubricant can enter the vacuum chamber or the environment of the pump. Furthermore, because the rotors operate contact-free, no abrasion debris is created in the form of particles, which could contaminate the vacuum chamber. Clean vacuum generation with no contamination of workstation or vacuum chamber.

Maintenance free thanks to a friction-free operating principle

ECODRY plus features a friction-free operating principle, so their components are not exposed to wear in any way. All ECODRY plus components are designed for up to five years’ operation. Maintenance measures such replacing seals or changing the oil are not required during that time. In the case of the pump itself, this guarantees long-term stable operation with no deterioration in final pressure or suction capacity.

Easy to use small sized pump

The ECODRY plus dry vacuum pumps have a compact housing and are simple to operate. With integrated castors and their low weight (less than 29 kg), they can be easily rolled out to their installation location and be moved at any point in time. There is no need for complex installation work, as the pumps can be connected directly to a single-phase electricity supply. The pumps are air-cooled, and therefore require no connection to a water supply for the purposes of cooling.

High water vapor tolerance: no internal condensation

In drying applications, such as cryopump regeneration, or when pumping out vacuum chambers with large surface areas, high quantities of water vapor may accrue. Not every pump can handle this without difficulty, as condensation in the pump can lead to corrosion and pump failure. However, with its gas ballast valve open, the ECODRY plus can pump water vapor at rates of up to 500 g/h without internal condensation.

Smart pump with integrated control dashboard for a fully intuitive operation

The ECODRY plus enables intuitive operation thanks to its integrated control dashboard. It offers you the possibility to directly connect both vacuum gauges and valves to the pump: enabling easy pressure and valve control, resulting in improved energy efficiency and process safety.


  • Mass spectrometry  

  • Electron microscopy   

  • Backing pump for turbomolecular pumps  

  • Drying   

  • Accelerator/synchrotron  

  • Spectroscopy 

  • Regeneration of cryopumps  

  • Surface analysis  

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