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Innovative Rotary Vane Vacuum Pumps by A10

Rotary Vane Vacuum Pump, Single Stage

Atlas Copco’s GV 20-300 range is a series of robust an reliable oil-sealed rotary vane vacuum pumps, packed with innovative features. Oil-sealed rotary vane vacuum pumps are ideal for critical applications like packaging and material handling in the general industry. With 8 models, offering pumping speeds of between 20 and 365 m³/h, you will definitely find the right model for your specific application.

Customer Benefits

High Reliability – Thanks to a rugged design and optimal oil retention at all operating pressures. An inlet non-return valve protects the pump against counter rotation.

Plug and Play Installation – Easy installation thanks to a compact, space-saving design.

Easy Maintenance – Wear is low thanks to optimally selected shaft speeds. Servicing can be done by the same engineer that services your compressed air equipment.

Low noise and vibration levels throughout the pressure rangeA10 Compressed Air Services provides a full range of Atlas Copco air compressors, vacuum pumps, filtration systems, receiver tanks and more for companies in South Carolina. For more information, Call (864) 605-7792 or email

What is a rotary vane vacuum pump?

A rotary vane pump is a positive-displacement pump that consists of vanes mounted to a rotor that rotates inside a cavity. In some cases these vanes can have variable length and/or be tensioned to maintain contact with the walls as the pump rotates.

Single Stage Vs. Dual Stage Rotary Vane Pumps

Oil-sealed rotary vane pumps are mainstays in industrial vacuums with a wide variety of applications. Typical rotary vane pumps are offered in single-stage and two-stage designs depending on the application and process requirements. Both types are oil-sealed, sliding vane pumps that use plates, or vanes, in an offset rotor to create a volume to compress gas to the pump exhaust.

So how do these pumps compare?

Single-stage Rotary Vane Vacuum pumps

How they work – Single-stage pumps exhaust into a built-in chamber in the pump that separates the oil from the pumped gas. The oil is returned and the gas is exhausted.
Applications – Single-stage pumps work well for rough vacuum levels and are less expensive than similar two-stage versions.

Dual-stage Rotary Vane Vacuum pumps

How they work – Dual-stage pumps have a low vacuum stage and a mated high vacuum stage in one assembly. The high vacuum stage takes in process gas and transfers it to a second, low vacuum stage that compresses the gas to atmospheric pressure, improving the vacuum performance of the pump.
Applications – Dual-stage pumps have a greater pressure range, usually an improvement of a decade or two (10-1 Torr vs. 10-3 Torr) for processes that require deeper vacuum.
In short, if vacuum level is not an issue, a single stage vane pump may do the trick. Conversely, if deeper pressure with good vacuum performance is necessary, the dual stage rotary vane pump would be the best solution. For more information on whether you need a single stage or double stage vacuum pump, please reach out to an Atlas Copco expert.