Wet Chemistry
A dry pump for wet pumping duty? Absolutely!
Key benefits of XDS dry scroll pumps for "wet" applications:
- No oil or grease within the vacuum envelope
- Isolated bearings and dry mechanism eliminates any oil or grease contamination, and prevents bearing exposure to process flow gases and chemicals
- No working fluid to become contaminated with process that would cause degradation of pumping performance
- No messy oil changes or oil disposal required...... ever!
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- Superior condensable vapour pumping compared to an oil sealed pump
- No working fluid to become contaminated/degraded by vapours condensing in the pump
- Designed for use with all common solvents
- 3-position gas ballast selector enables pumping in excess of 200 grams per hour of water vapour
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XDS scroll pumps were designed for pumping “wet” applications, from gel drying to rotary evaporation, if you are using an oil-sealed or diaphragm type vacuum pump, then changing to an XDS scroll pump will offer less maintenance, less mess and therefore lower cost.
Pumping condensable vapours with oil-sealed pumps creates special challenges and great care must be taken to avoid vapour condensing inside the pump which will then build up (a common condensate is water). Most oil-sealed pumps have steel or cast iron pumping mechanisms which will degrade and rust if left with condensed water inside, even oil-sealed pumps can be damaged if significant quantities of non-compressible liquid water are ingested.
XDS scroll pumps contain no oil or grease to get contaminated in their pumping mechanism, this dramatically eases maintenance requirements, in most cases even running 24/7 maintenance is just 20 minutes once a year, with no messy oil to dispose of either. If the pump does happen to accidentally ingest some liquid, or any condenses inside the pump, the pump will just “gurgle” and spit it out the exhaust.
XDS scroll pumps also have a built in manual gas ballast which can be used to “clean up” the pump by speeding up the passage of condensed vapours, and allowing the pump to achieve its best ultimate pressure. |
