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Ohio Medical Rotary Vane Vacuum Pumps

Ohio Medical's rotary vane vacuum pumps are used in industrial and medical applications. Rotary vane vacuum pumps are positive-displacement pumps containing an impeller with vanes. This impeller is driven by an induction motor and is offset from the center of the cylindrical body of the pump. The offset means the vanes are closer to the top of the pump's body and farthest away from the body's bottom.

The eccentrically-installed vanes divide the working chamber into two compartments with variable volumes. As the impeller turns, air flows into the enlarging suction chamber until it is sealed by the second vane. As the impeller continues to turn and decreases volume, the enclosed air is compressed en route to the outlet valve.

The outlet valve is usually oil-sealed. When the valve opens, a trace of pump oil (a.k.a. operating fluid) enters the suction chamber, lubricates moving parts, seals the vanes against the pump's body, and ensures an optimal temperature balance through heat transfer.

However, Ohio Medical also offers oil-less, dry-running rotary vane vacuum pumps, for applications where even traces of pump oil are unacceptable.

Ohio Medical Small Rotary Vane Vacuum Pump Small Rotary Vane Vacuum Pumps (¾ – 7½ HP)
These smaller vacuum pumps are oil-sealed, air-cooled, and are idea for a number of low-to-medium vacuum applications.
Ohio Medical Large Rotary Vane Vacuum Pump Large Rotary Vane Vacuum Pumps (10 – 25 HP)
Ohio Medical also manufactures larger and more powerful vacuum pumps for applications where large capacities at deep vacuum are needed.
Ohio Medical Oil-less Dry-Running Rotary Vane Vacuum Pump Dry Rotary Vane Vacuum Pumps
These dry-running, oil-less vacuum pumps are ideal for medium vacuum applications, and those requiring a varable vacuum range.
Squire Cogswell Rotary Vane Vacuum Pumps Squire Cogswell Rotary Vane Vacuum Pumps
Squire-Cogswell vacuum pumps have served many industries for decades. Made of rugged cast iron, these pumps rotate at 1200 RPM, resulting in low heat and long service life.

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