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Oil-less Rotary Vane Systems
Principle of Operation
A rotor is positioned eccentrically in a cylindrical housing so that it is almost touching the cylinder. When the rotor starts turning, centrifugal force moves the blades out of the rotor slots and they slide against the internal surface of the cylinder. A cell is formed between two blades creating a volume that changes constantly during rotation. Air enters from the inlet port into a cell when the cell has achieved its maximum air volume. As the cell moves away from the port, its volume becomes smaller and smaller, the air is compressed and the pressure rises. This continues until the pressure in the cell exits through the outlet port.
Dry rotary vane pumps do not have any oil in them. The tip of the vanes come in direct contact with the pump housing. The vanes are typically made out of a carbon based material. Typical maintenance of this type of pump is: vane changes.
EMSE oil-less rotary vane vacuum systems are similar to the lubricated rotary vane pumps, except they are equipped with self-lubricated carbon vanes and do not require any oil for operation.
Advantages: |
Disadvantages: |
- Suitable for a dedicated anesthesia evacuation system
- Air cooled design
- No water and sewage costs
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- Can not take a slug of water
- Much shorter vane life compared with the lubricated pump vanes
- Lower capacity per horsepower when compared with the other designs
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System Selections
Simplex Systems
System Model Number |
Pump HP |
System |
Tank Size |
Pump SCFM at 19″Hg |
System SCFM at 19″Hg |
Catalog Cuts |
Suggested Specs |
1SOB1.5T80V |
1.2 |
Simplex “Space-Saver” Vertical Tank Mounted |
80 |
5.3 |
5.3 |
Catalog Cuts |
Specs |
1SOB2T80V |
1.7 |
80 |
8.0 |
8.0 |
Catalog Cuts |
Specs |
NFPA Duplex Dry Rotary Vane Vacuum Systems
NFPA Triplex Dry Rotary Vane Vacuum Systems
System Model Number |
Pump HP |
System |
Tank Size |
Pump SCFM at 19″Hg |
System SCFM at 19″Hg |
Catalog Cuts |
Suggested Specs |
1TOB5HS200 |
5.6 |
Triplex Stack Mounted
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200 |
21.0 |
42.0* |
Catalog Cuts |
Specs |
1TOB7.5S200 |
7.5 |
200 |
38.0 |
76.0* |
Catalog Cuts |
Specs |
1TOB10S200 |
10 |
200 |
55.0 |
110.0* |
Catalog Cuts |
Specs |
1TOB15S200 |
15 |
200 |
80.0 |
160.0* |
Catalog Cuts |
Specs |
*System capacities are shown without the reserve pump per NFPA 99 |
NFPA Quadruplex Dry Rotary Vane Vacuum Systems
System Model Number |
Pump HP |
System |
Tank Size |
Pump SCFM at 19″Hg |
System SCFM at 19″Hg |
Catalog Cuts |
Suggested Specs |
1QOB10S200 |
20 |
Quad Stack Mounted |
200 |
55.2 |
165.6* |
Catalog Cuts |
Specs |
*System capacities are shown without the reserve pump per NFPA 99 |
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