Rotary Vane Pumps Internal and External Protection

Editor: Dominik Stephan

Better safe then sorry: The Duo 11 Atex rotary vane pump by Pfeiffer Vacuum, which meets Atex directive 2014/34/EU, is a reliable workhorse for processes taking place in potentially explosive atmospheres or conveying explosive gases and vapors.

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Pfeiffer Vacuum introduces new magnetically coupled rotary vane pump Duo 11 ATEX
Pfeiffer Vacuum introduces new magnetically coupled rotary vane pump Duo 11 ATEX
(Source: Pfeiffer Vacuum)

As such, it satisfies the most stringent explosion protection requirements. The Atex certification applies for both the interior and exterior of the pump. The Duo 11 Atex is classified as equipment category 3G and temperature class T4. It can convey all gases up to and including explosion group IIC.

The pumping speed is 9 m³/h at 50 Hz and 10.5 m³/h at 60 Hz. The pump is equipped with a frictionless magnetic coupling, providing extra safety in hazardous atmospheres: Without shaft seal rings, it is impossible for media inside the pump to escape out through faulty seal rings.

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