Roots vacuum pumps

Pfeiffer Vacuum A4 series

The Pfeiffer Vacuum A4 series at a glance: 12 models from the field of Roots vacuum pumps – with technical data, variants and the option to send an enquiry.

View 12 modelsSend an enquiry

  • 12Models
  • 95–1,650m³/h pumping speed at 50 Hz
  • 3 × 10⁻³mbar lowest ultimate pressure
Operating principle: Roots vacuum pumps (schematic drawing)
Operating principle: Roots vacuum pumps

Product overview

Products of the Pfeiffer Vacuum A4 series

Use the filters on the left to narrow the models down by their key figures. Each row leads to the model with its technical data and variants.

A 124 HPumping speed 95 m³/h 50 Hz110 m³/h 60 HzUltimate pressure 0.05 mbar
A 204 H/XPumping speed 130 m³/h 50 Hz160 m³/h 60 HzUltimate pressure 0.2 mbar
A 604 HPumping speed 480 m³/h 50 Hz560 m³/h 60 HzUltimate pressure 3 × 10-3 mbar
A 804 H/XPumping speed 600 m³/h 50 Hz700 m³/h 60 HzUltimate pressure 8 × 10-3 mbar
A 1204 HPumping speed 1,050 m³/h 50 Hz1,150 m³/h 60 HzUltimate pressure 3 × 10-3 mbar
A 1504 H/XPumping speed 1,100 m³/h 50 Hz1,200 m³/h 60 HzUltimate pressure 8 × 10-3 mbar
A 1804 H/XPumping speed 1,650 m³/h 50 Hz1,700 m³/h 60 HzUltimate pressure 8 × 10-3 mbar
A 1504 XNPumping speed 1,100 m³/h 60 HzUltimate pressure 0.0145 mbar
A 1804 XNPumping speed 1,600 m³/h 60 HzUltimate pressure 0.0145 mbar
A 3004 H/XPumping speed 3,000 m³/h 60 HzUltimate pressure 4 × 10-3 mbar
A 3004 XNPumping speed 2,900 m³/h 60 HzUltimate pressure 4 × 10-3 mbar
A 804 XNPumping speed 600 m³/h 60 HzUltimate pressure 0.0145 mbar

Model comparison

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.

Frequently asked questions

Questions about the Pfeiffer Vacuum A4 series

Which models does the Pfeiffer Vacuum A4 series comprise?
The Ehrler & Beck catalogue lists 12 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 95 to 1,650 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 3 × 10⁻³ and 0.2 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 A4 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.

Send an enquirySpare parts and accessoriesService