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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
  • 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


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

 


System Model Number Pump HP System Tank Size Pump SCFM at 19″Hg System SCFM at 19″Hg Catalog Cuts Suggested Specs
1DOB1.5T30V 1.2 Duplex
"Space Saver"
Vertical Tank
Mounted
30 5.3 5.3* Catalog Cuts Specs
1DOB1.5T80V 1.2 80 5.3 5.3* Catalog Cuts Specs
1DOB2T30V 1.7 30 8.0 8.0* Catalog Cuts Specs
1DOB2T80V 1.7 80 8.0 8.0* Catalog Cuts Specs
1DOB3HT80V 3.2 80 13.5 13.5* Catalog Cuts Specs
1DOB5HT80V 5.6 80 21.0 21.0* Catalog Cuts Specs
1DOB7.5T80V 7.5 80 38.0 38.0* Catalog Cuts Specs
1DOB7.5T120V 7.5 120 38.0 38.0* Catalog Cuts Specs
*System capacities are shown without the reserve pump per NFPA 99
1DOB1T60 0.75 Duplex Horizontal
Tank Mounted
60 3.0 3.0* Catalog Cuts Specs
1DOB1.5T60
1.2 60 5.3 5.3* Catalog Cuts Specs
1DOB2T60 1.7 60 8.0 8.0* Catalog Cuts Specs
1DOB2T120 1.7 120 8.0 8.0* Catalog Cuts Specs
1DOB3HT120 3.2 120 13.5 13.5* Catalog Cuts Specs
1DOB3HT120N 3.2 120 13.5 13.5* Catalog Cuts Specs
1DOB5T80N 4.6 80 17.0 17.0* Catalog Cuts Specs
1DOB5T120 4.6 120 17.0 17.0* Catalog Cuts Specs
1DOB5T120N 4.6 120 17.0 17.0* Catalog Cuts Specs
1DOB5HT120 5.6 120 21.0 21.0* Catalog Cuts Specs
1DOB7.5T120 7.5 120 38.0 38.0* Catalog Cuts Specs
*System capacities are shown without the reserve pump per NFPA 99
1DOB3HS60H
3.2 Duplex
Stack Mounted
60 13.5 13.5* Catalog Cuts Specs
1DOB5HS60H 5.6 60 21.0 21.0* Catalog Cuts Specs
1DOB5S120 4.6 120 17.0 17.0* Catalog Cuts Specs
1DOB5HS120 5.6 120 21.0 21.0* Catalog Cuts Specs
1DOB7.5S120 7.5 120 38.0 38.0* Catalog Cuts Specs
1DOB7.5S200 7.5 120 38.0 38.0* Catalog Cuts Specs
1DOB10S120 10 120 55.0 55.0* Catalog Cuts Specs
1DOB10S200 10 200 55.0 55.0* Catalog Cuts Specs
*System capacities are shown without the reserve pump per NFPA 99



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
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