In industrial applications, Roots blowers and vacuum pumps are widely used for air and gas handling. While they may look similar, their working principles, pressure ranges, and application scenarios are quite different. In this article, we'll explore the key differences between the two, and help you determine which one fits your system best.
A Roots blower (also known as a Roots air blower) is a positive displacement blower. It uses two rotors rotating in opposite directions to move air from the inlet to the outlet, thereby increasing the pressure and delivering air consistently.
A vacuum pump, on the other hand, removes gas molecules from a sealed volume to create a vacuum (negative pressure).
In some systems, a negative pressure Roots blower may be used to create mild vacuum conditions, but its core function remains air delivery under pressure.
Wastewater treatment aeration
Aquaculture aeration (Root Blower Aquaculture)
Pneumatic conveying systems
Powder conveying system pneumatic
Industrial pneumatic conveying systems for PVC
Coal conveying system pneumatic
Pneumatic conveyer for rice husk, corn, sawdust
Truck/ship loader-unloader rice husk air grain pneumatic vacuum conveyor
Pneumatic conveying machine for bulk materials
Vacuum packaging
Laboratory and medical equipment
Semiconductor processing
Vacuum drying systems
Roots blowers operate in low to medium pressure ranges, perfect for continuous airflow applications like aeration and material conveying. A popular model such as Root Blower 15 HP is often used in aquaculture and pneumatic conveying systems.
Vacuum pumps are used for generating high vacuum and are ideal for environments requiring very low pressure.
Although both machines have similar external structures, their internal components and goals are different. Roots blowers push air, while vacuum pumps extract air.
In systems such as powder conveying, Roots blowers are paired with specialized pipe for pneumatic conveying to build a complete system, while vacuum pumps are typically isolated units.
As a trusted manufacturer and solution provider, OASIS recommends the following:
Root Blower Golden Tech Series – Efficient and durable for complex working conditions
Roots Blower Longtech Series – Low noise and vibration for industrial setups
15 HP Root Blower – Cost-effective and reliable for both aquaculture and pneumatic conveying
We provide fully integrated industrial pneumatic conveying systems, including:
PVC powder conveying systems
Pneumatic conveyer for rice husk, sawdust, corn, and other biomass materials
Bulk material truck/ship loader and unloader solutions
Custom pipe fittings and pipe for pneumatic conveying
10+ years of industry expertise
Custom design available
Free technical consultation & blower selection
Global shipping support.