Safety New Atex Scroll Pumps

Editor: Ahlam Rais

Pfeiffer Vacuum has launched a new HiScroll Atex scroll pump which is ideal for pumping potentially explosive gases. The scroll pump can be used for analytics, industry or research & development.

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Pfeiffer Vacuum’s new HiScroll Atex scroll pump is suitable for pumping potentially explosive gases.
Pfeiffer Vacuum’s new HiScroll Atex scroll pump is suitable for pumping potentially explosive gases.
(Source: Pfeiffer Vacuum)

The new pumps in the HiScroll Atex range meet the requirements of the European directive Atex II 3/-G Ex h IIC T4 Gc X +5° C ≤ Ta ≤ +40 °C and are therefore suitable for pumping potentially explosive gases, states the company. Depending on the operational requirements, the Atex directives are subdivided into different categories based on the conditions under which the pumps are allowed to operate. The new scroll pump conforms to equipment category 3G based on contact with the pumped substance and meets temperature class T4. This allows all gases up to and including explosion group IIC to be pumped. It is even possible to pump hydrogen, adds the firm.

With these properties, the scroll pump covers many applications in the field of analytics, industry or research & development. It is also used in laboratories for pumping solvent-based liquids and gases which can produce combustible vapors. The Atex certification is awarded since the new scroll pump has no sources of ignition for potentially hazardous gas mixtures, mentions the company.

The firm’s scroll pumps offer high pumping speeds during pump-down, even at atmospheric pressure. According to the company, the completely dry and hermetically sealed vacuum pumps achieve a nominal pumping speed of 6 to 20 m³/h. They are characterized by their compact design and extremely quiet, low-vibration operation (<47 dB[A], in stand-by mode <42 dB[A]). They have a high-water vapor tolerance, and condensation in the vacuum pump is therefore prevented from the start. The integrated two-stage gas ballast valve allows individual adjustments to be made to the process requirements.

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