Plant room engineer

Which is the best vacuum pump?

October 28, 2019 1:56 pm Published by

The answer to this question is, the most suitable one for your application. It is of course more complicated than that. Here we will give you an introduction to some of the pump types and how they can best be used.

Rotary Vane

These vacuum pumps operate on the proven rotary vane principle. When the rotor turns centrifugal force throws the vanes against the cylindrical wall and creates a chamber between the rotor and the cylinder. Unlike traditional rotary vane pumps where oil is used to create a seal, dry running pumps have self-lubricating vanes, so no operating fluid is necessary. While many rotary vane pumps are used in automotive applications in industrial situations including packaging, woodworking, plastics, paper and printing, material handling and other demanding applications. Rotary Vane pumps are relatively low cost and are compact making them ideal for use where restricted access is an issue.

Rotary Lobe

Three-blade rotary lobe blowers work according to the proven Roots system: two parallel rotary pistons mounted rotate in opposite directions within a housing. Dry running, they are often used in food processing applications, pharmaceutical and similar industries because lobe pumps handle solids without damage to the product. Ease of maintenance and extended life time are the key benefits of Rotary Lobe pumps.


Dry claw pumps use two counter-rotating components to create compression and expansion. The rotors are nestled close to one another without touching, with minimal clearance between the claws. These pumps do not require liquid to seal and lubricate the vacuum. This makes them extremely robust and able to withstand harsh operating conditions. Dry claw pumps are ideal for applications that require low maintenance and increased process compatibility, such as the printing industry, soil remediation, medical vacuum, bulk material handling, CNC machines and vacuum hold-down. If you are looking to replace a rotary vane or rotary lobe pump, you may want to consider a claw pump as they offer higher efficiency and lower maintenance. 

Side Channel Blower

Side channel blowers work by transferring kinetic energy from a rotating impeller to the pumping medium and converted into pressure. A side channel blower can be used to generate both vacuum and blast air. They generate higher pressures than other types of pumps of a comparable size and power. These versatile dry running pumps can be used in many applications. Vacuum packing, thermoforming in the plastics industry as pneumatic conveying of granules or powders. They can also be used for aeration of swimming pools and ponds and in soil remediation.

This covers only a few of the types of vacuum pumps available. Harrier Pneumatics are a main distribution partner for Gardner Denver’s Elmo Rietschle product range. With Vacuum Pumps found in nearly very manufacturing process we will have a suitable pump for your application available. Harrier can also provide installation, servicing guidance and advice on your vacuum pump and blower requirements. Get in touch to discuss your particular needs.

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This post was written by Harrier Pneumatics