Roots vacuum pumps

Pfeiffer Vacuum UltiDry series

The Pfeiffer Vacuum UltiDry series at a glance: 2 models from the field of Roots vacuum pumps – with technical data, variants and the option to send an enquiry.

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  • 2Models
  • 1,800–3,000m³/h pumping speed at 50 Hz
  • 5.3 × 10⁻⁴mbar lowest ultimate pressure
Operating principle: Roots vacuum pumps (schematic drawing)
Operating principle: Roots vacuum pumps

Product overview

Products of the Pfeiffer Vacuum UltiDry series

Each row leads to the model with its technical data and variants.

UltiDry P1820Pumping speed 1,800 m³/h 50 HzUltimate pressure 1.1 × 10-3 mbar
UltiDry P3020Pumping speed 3,000 m³/h 50 HzUltimate pressure 5.3 × 10-4 mbar

About the series

Technology and features

Operating principle

Multi-stage Roots vacuum pumps compress the gas through several Roots stages arranged in series directly against atmospheric pressure and need no backing pump to do so. The pump chamber is dry and contact-free; gears and bearings are separated from the gas chamber.

The technology page shows the operating principle with an interactive drawing: Roots vacuum pumps.

Features of the series

  • Wide temperature range: according to Pfeiffer the widest temperature range on the market, from 50 °C to 270 °C
  • Robust: longer service life in harsh applications thanks to improved powder management, higher corrosion resistance and optimised temperature profile
  • Economical: low power consumption, patented purge gas injection system for lower N₂ and water demand

Manufacturer's data as given in the product descriptions of the individual models.

Frequently asked questions

Questions about the Pfeiffer Vacuum UltiDry series

Which models does the Pfeiffer Vacuum UltiDry series comprise?
The Ehrler & Beck catalogue lists 2 models of the series. The product overview names each model with its key figures and the number of its variants; the model page shows the technical data.
Which pumping speeds does the series cover?
At 50 Hz the models cover pumping speeds from 1,800 to 3,000 m³/h. The figure comes from the product data of the individual models; values for 60 Hz, where available, are given in the product overview.
What ultimate pressure do the models of the series reach?
Depending on the model, the ultimate pressure lies between 5.3 × 10⁻⁴ and 1.1 × 10⁻³ mbar. The figures on the page of the respective model are decisive.
How does the technology of the series work?
The series belongs to the field of Roots vacuum pumps. The technology page explains the operating principle with an interactive drawing and names all series of this technology.
Does Ehrler & Beck supply spare parts and service for the Pfeiffer Vacuum UltiDry series?
Yes. Ehrler & Beck supplies the models of the series as well as spare parts and accessories and takes care of maintenance and repair. For a quotation, an enquiry with the model or part number is all it takes.

Which model fits your process?

Tell us the gas to be conveyed, the working pressure and the flow rate you need – we will advise you on selection, spare parts and service.

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