Adjustable Air Amplifiers Solve Cooling and Air Circulation Problems

An EXAIR Adjustable Air Amplifier

An EXAIR Air Amplifier is a compressed air-driven device designed to utilize a small volume of compressed air and transform it into a large volume airflow.  This is done by throttling the compressed air through a small gap within the Air Amplifier, and allowing a controlled volume to escape.  This escaping compressed air flow adheres to a Coanda profile, changing its flow direction and resulting in an entrainment of ambient air.  The end result is an amplification of as much as 25x the output airflow compared to the inlet compressed air flow.  And, this already amplified volume of air continues entraining air as it exhausts from the Air Amplifier, resulting in further amplification.

But, what if you are uncertain of the air volume needed in your application?

When exploring any solution, there are bound to be uncertainties.  There may be application parameters which will change or remain unknown, a need to produce multiple airflow volumes within a given space, or simply a desire to have variability in the solution package.  If any of these apply, an Adjustable Air Amplifier is worth consideration.

EXAIR Adjustable Air Amplifiers utilize the same approach mentioned above to entrain ambient air, while allowing infinite adjustment of the incoming compressed air.  This translates to an infinite adjustment of the output airflow, allowing for fine tuning in an application to move the maximum volume of air with minimal compressed air use.

Arrows and text identify the components of an Adjustable Air Amplifier

To adjust compressed air consumption of an Adjustable Air Amplifier, simply loosen the locking ring, turn the “plug” within the “body” to increase or decrease the airflow, and retighten the locking ring.  There are no parts or components to change, just an easy, simple adjustment.

Aluminum and Stainless Steel Adjustable Air Amplifiers

Our adjustable units are available from stock in aluminum and 303 grade stainless steel, and in sizes from ½” to 4” in outlet diameter.  This range of size and materials (from stock) allows for proper sizing and adjustability within an application, while maintaining the integrity based on materials requirement.

For applications with high ambient temperatures and a desire to take advantage of the adaptability of Adjustable Air Amplifiers, a High Temperature Adjustable Air Amplifier is available upon request with our Application Engineers. These units withstand ambient temperatures of 700F (374C) and are useful to circulate hot air within ovens to provide consistent temperatures. They have been used within large rotational molds to prevent hot spots to maintain even material thickness. High Temperature Adjustable Air Amplifiers solve circulation and cooling problems with zero maintenance or breakdown concerns.

No matter the material of construction or application temperature, EXAIR Adjustable Air Amplifiers allow infinite adjustment of input and output flows while entraining a huge volume of ambient air.  This ability, to entrain high volumes of ambient air with small volumes of compressed air, is an expertise of EXAIR, which serves us well in helping customers with applying this principle to do work.  For example, if you were to need to cool a cast part and needed a large volume of airflow to complete the task, we can not only provide the products to do so, but also the engineering support to help determine the required air volumes.

Let us help you find an efficient solution to your application today.  We’re available by phone (1-800-903-9247), email (, online chat (, and our social media handles (@EXAIR_LE).

Lee Evans
Application Engineer

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