3 Product description
3.1 Function
The
gas circulation cooled
roots pumps of the OktaLine "
G
" series work according to the Roots princi-
ple, and are operated without backing pump. 2 rolling pistons, which are coupled by a pair of gears,
counter-rotate and roll in the housing in opposite directions without making contact. When used as a
single pump, they can reach a pressure range of 130 to 1013 Pa. A series connection of two vacuum
pumps reduces the ultimate pressure to 20 to 30 hPa. When combined with other Roots pumps, the
final pressure can be lowered down to the medium vacuum range. The direction of flow of the vacuum
pumps is vertical from top to bottom, so that any accumulating fluids cannot become deposited in the
pump housing.
2
3
1
4
6
7
8
9
10
11
12
13
5
Fig. 2:
Design, Okta 8000 G
1
Lubricant filling plug
8
Sealing gas connection (2×)
2
Vacuum flange
9
Fore-vacuum flange
3
Eye bolts
10
Measurement connection, fore-vacuum flange
4
Lubricant filling plug
11
Cooling gas connection
5
Oiler for version with RSSR
12
Sealing gas connection (2×)
6
Sight glass
13
Lubricant drain plug
7
Lubricant drain plug
Product description
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