3 Product description
3.1 Function
DuoLine rotary vane vacuum pumps are two-stage, oil-sealed rotary positive displacement pumps for
use in coarse and medium vacuum. The vacuum pumps are equipped with a safety valve that vacuum
seals the vacuum chamber and simultaneously vents the vacuum pump when the pump is at a stand-
still. The rotary vane pump has a contactless and wear proof drive with magnetic coupling. The pump
housing is hermetically sealed.
1
2
4
5
6
8
10
11
12
13
7
3
9
Fig. 2:
Structure of the rotary vane pump
1 Vacuum connection
8
Base plate
2 Protective cap
9
Stand
3 Handle
10
Drain screw
4 Exhaust connection
11
Sight glass
5 Mains switch (single-phase motor only)
12
Filler screw
6 Motor
13
Gas ballast valve
7 Locking screw (oil pressure switch)
3.2 Operating principle
1
3
4
5
6
2
Fig. 3:
Rotary vane vacuum pump functional principle
1 Housing
4
Vane
2 Vacuum flange (inlet)
5
Suction chamber
3 Rotor
6
Exhaust (outlet)
The rotary vane pump is an oil-sealed rotational displacement pump. The pumping system is made up
of the housing, the eccentrically mounted rotor, and the centrifugally- and spring-loaded radially sliding
vanes, which divide the suction chamber into multiple chambers. The volume of each chamber changes
Product description
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