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Pfeiffer <strong>Vacuum</strong><br />
Page 34<br />
Model<br />
Duo 5 M<br />
Duo 10 M<br />
Duo 20 M<br />
Duo 35 M<br />
Duo 65 M<br />
Model<br />
Duo 5 MC<br />
Duo 10 MC<br />
Duo 20 MC<br />
Duo 2.5 C<br />
Duo 35 C<br />
Duo 65 C<br />
Duo 120 C<br />
<strong>Vacuum</strong> <strong>Technology</strong><br />
Duo M series<br />
M series pumps are equipped with a magnetic coupling with can. This wear-free sealing<br />
concept hermetically seals the pumps, making them clean and environmentally friendly. The<br />
magnetic coupling minimizes maintenance and thus results in significant savings.<br />
Table 2.5: Duo M series performance data<br />
Pumping Speed<br />
5 m³ / h<br />
10 m³ / h<br />
20 m³ / h<br />
35 m³ / h<br />
65 m³ / h<br />
Ultimate Pressure<br />
5 . 10 -3 mbar<br />
5 . 10 -3 mbar<br />
5 . 10 -3 mbar<br />
3 . 10 -3 mbar<br />
3 . 10 -3 mbar<br />
Applications<br />
Ideally suited for turbopump pumping<br />
stations, analysis, research & development,<br />
coating, non-explosive toxic gases<br />
Duo C series and MC series<br />
The C series pumps are suitable for corrosive gas applications. In contrast to standard<br />
pumps, they have a special gas ballast valve, through which inert gas can be admitted into<br />
the pump. In addition, the pumps are equipped with special vanes that are especially resistant<br />
to chemicals. All corrosive gas pumps are ready for operation with chemical-resistant F4 or<br />
F5 (perflourpolyether) operating fluids. The Duo MC pumps are especially suitable for<br />
pumping toxic gases, because the hermetically sealed magnetic coupling prevents gas<br />
from reaching the outside.<br />
Table 2.6: Duo C series and Duo MC series performance data<br />
Pumping Speed<br />
5.0 m³ / h<br />
10.0 m³ / h<br />
20.0 m³ / h<br />
2.5 m³ / h<br />
35.0 m³ / h<br />
65.0 m³ / h<br />
120.0 m³ / h<br />
Ultimate Pressure<br />
5 . 10 -3 mbar<br />
5 . 10 -3 mbar<br />
5 . 10 -3 mbar<br />
6 . 10 -3 mbar<br />
3 . 10 -3 mbar<br />
3 . 10 -3 mbar<br />
3 . 10 -3 mbar<br />
Applications<br />
Suitable for corrosive gas applications,<br />
chemical labs, toxic non-explosive gases<br />
Suitable for corrosive gas applications,<br />
chemical laboratories<br />
2.2.3.3 Operating fluid selection<br />
Because operating fluid comes into contact with the medium to be pumped, it is exposed to<br />
the influences of the medium in question. Consequently, operating fluid should be selected<br />
on an individual basis in accordance with the respective application. Pfeiffer <strong>Vacuum</strong> offers<br />
four different types of operating fluids that are suitable for all major applications. The pumps<br />
are factory-set for the respective operating fluid.<br />
www.pfeiffer-vacuum.net
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