New Pfeiffer Vacuum rotary vane pump for explosive atmospheres and gases
German pump maker Pfeiffer Vacuum has released the Duo 11 ATEX rotary vane pump for processes taking place in potentially explosive atmospheres or conveying explosive gases and vapours.
The Duo 11 ATEX meets ATEX directive 2014/34/EU and as such it satisfies the most stringent explosion protection requirements.
The ATEX certification applies for both the interior and exterior of the pump, and it is classified as equipment category 3G and temperature class T4.
It can convey all gases up to and including explosion group IIC at pumping speeds of 9m/h at 50 Hz and 10.5m/h at 60 Hz.
The Duo 11 ATEX is equipped with a frictionless magnetic coupling and the shaft seal rings that are used with other rotary vane pumps can be dispensed with as a result.
The extra safety which the magnetic coupling provides is important in explosive atmospheres as without shaft seal rings, it is impossible for media inside the pump to escape out through faulty rings.
Explosion-proof equipment is required in many types of applications, and potentially explosive gases are used in numerous industrial processes.
Hazardous gas atmospheres are present in applications such as research experiments, various industrial processes, biotechnology, and chemistry laboratories.
Gas filling machines are also vulnerable to a massive risk of explosion.