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Oct 21

Vacuum pumps are used in a wide range of industries, from the food and beverage industry to the medical industry. Considering that different industries have different needs, even the smallest difference in function and application can make an impact. As such, different types of vacuum pumps were invented to serve specific needs. Two of the more popular types are the rotary vane vacuum pump and the dry claw pump.

In today’s blog, let’s review the differences between these two pumps:

Rotary Vane Vacuum Pump

A rotary vane vacuum pump is a positive-displacement pump, wherein its suction and discharge capabilities are facilitated by rotating vanes on a motor. At the suction side, pressure is created from the rotation to pull in the pump medium, while at the discharge side, the vacuum pump simply loosens its chamber to allow the pump medium to exit. The rotary vane vacuum pump can work with oils, gas, and other fluids, and is prized for its versatility – these pumps can virtually be employed universally throughout low and medium vacuum ranges.

The most common places to see a rotary vane vacuum pump in action are in the aerospace or automotive industries. In addition, they can also be used in laboratory freeze dryers or in HVAC applications.

Dry Claw Vacuum Pump

Dry claw vacuum pumps also operate based on the principle of rotation, albeit with two closely placed rotors, or claws. These claws never touch, but as they rotate the motions cycle between drawing in and compressing air. This pump type is known for its relatively low level of noise and is thus deemed beneficial for facilities where pneumatic machines and conveyors are used.

In addition to this, dry claw vacuum pumps are also used in packing, wood processing, and wastewater management applications. This pump type is prized for its mechanical strength and efficiency and does not require any oil to operate.

As you can see, these pump types can be quite similar on some fronts, but by virtue of their different methodologies, each pump type will be more suitable for certain applications compared to the other. The best way to be sure of whether you have acquired the correct pump for your needs is to consult with an expert. So, give GlobalVac a call any time you have questions about vacuum pumps – you can be assured that we will have the answers!

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