FAQ

  • Can I increase my air pressure with an Air Amplifier?

    No. Air Amplifiers amplify volume, not pressure. Air Amplifiers use small volumes of compressed air to produce high volume outlet flows with low outlet pressures (well below 1 PSIG). If low pressure is a problem, it is best to evaluate the compressed air system. Restrictive fittings, undersized lines, clogged lines or a maxed out compressor may be the problem.

  • Can I connect the output of a Vortex Tube to an Air Amplifier?

    No, for proper operation, the Vortex Tube cold outlet should not be subjected to any restrictions that would produce backpressure in excess of 5 PSIG. An Air Amplifier would restrict the flow of a Vortex Tube to the point where the backpressure is excessive and severely limit the cooling capacity of the Vortex Tube.

  • How much ducting can I attach to an Air Amplifier?

    We recommend a maximum of 15' of duct on the positive pressure side of an Air Amplifier and a maximum of 5' of duct on the intake side of an Air Amplifier.

  • How is the volume of air 6" (152mm) away from the unit more than at the exit point?

    The diverging airflow pattern becomes larger as the airflow moves away from the air amplifier. The increasing size of the airflow diameter means that more and more airflow becomes entrained, resulting in a much larger air volume.

  • How do I set the gap on the Adjustable Air Amplifiers?

    To change the gap, loosen the lock ring and back out or tighten the inner sleeve until the desired gap opening is reached. The gap can be set with shim stock to help in obtaining a more accurate setting. After setting the gap opening to the desired dimension, tighten the lock ring to hold it in place. Remove the shim stock from the gap (if shim stock is used).

    The Adjustable Air Amplifiers receive their stock flow setting at the factory with the use of a flow meter.

  • What are the temperature limits of the Air Amplifiers?

    Super Air Amplifier = 275°F (135°C)

    Aluminum Adjustable Air Amplifier = 275°F (135°C)

    Stainless Steel Adjustable Air Amplifier = 400°F (204°C)

    High Temperature Air Amplifier = 700°F (374°C)

  • What is the difference between the Super Air Amplifier and the Adjustable Air Amplifier?

    The Super Air Amplifier is only available in Aluminum whereas the Adjustable Air Amplifier is available in aluminum and stainless steel.  Also, all sizes of the Super Air Amplifier have a 2 bolt flange (except the 8" (203mm) Super Air Amplifier) molded into its body for mounting.  The Adjustable Air Amplifier must be mounted externally or with hard piping. The key operating difference is that a Super Air Amplifier operates with a patented shim to set the air gap which allows it to consume 40% less air than an Adjustable Air Amplifier. This patented shim also allows for a higher amplification ratio than the Adjustable Air Amplifer models. The Super Air Amplifier Shims can be used on an Adjustable Air Amplifier if you wish to decrease the air consumption and have a set air gap.

  • Can I use a Stay Set Hose with an Air Amplifier?

    Yes, EXAIR Stay Set Hoses can be used with smaller sizes of our Air Amplifiers. Please contact an Application Engineer to discuss your specific requirements.

  • What are the available materials of construction for the Air Amplifiers?

    The Super Air Amplifier is available in Aluminum.

    The Adjustable Air Amplifier is available in:

    • Aluminum
    • 303 Stainless
    • High Temperature Stainless Steel (1-1/4" Model Only)

  • Can I connect the output of a Vortex Tube to an Air Amplifier or Air Knife?

    No, for proper operation, the Vortex Tube cold outlet should not be subjected to any restrictions that would produce backpressure in excess of 5 PSIG. The hot end exhaust can withstand pressure up to 30 PSIG (depending on the cold fraction). If backpressure exceeds 5 PSIG, then the performance of the Vortex Tube will deteriorate. The hot end exhaust can withstand pressure up  to 30 PSIG (depending on the cold fraction).

    An Air Amplifier or Air Knife would restrict the flow of a Vortex Tube to the point where the backpressure is excessive and severely limit the cooling capacity of the Vortex Tube.

    If the goal were chilled airflow coming from an Air Amplifier or Air Knife, it would be unrealistic to expect a temperature decrease in the total output flow of either device with chilled compressed air. Compressed air will make up a small fraction of the total airflow output from these devices. The net temperature out will be a mix of compressed and ambient air with ambient air the majority of the volume. The net effect is that the airflow is going to be the same or very close to ambient temperature surrounding an Air Amplifier or Air Knife.

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