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Air Knives
Which Air Knife is Best For Your Application?

EXAIR manufactures the Super Air Knife™, Standard Air Knife™ and Full-Flow Air Knife™. The table below provides a quick comparison of the three styles.

Five Year Built to Last Warranty
EXAIR manufactures the Super Air Knife, Standard Air Knife and Full-Flow Air Knife. 
Super Air Knife (shown left), Standard Air Knife (shown middle), Full-Flow Air Knife (shown right).

Air Knife Comparison

Air Knife Comparison
Air Consumption Velocity Force per Inch (25mm) Sound Level Amp.
SCFM SLPM FPM M/S OZS GRAMS dBA RATIO
6" Super Air Knife 17.4 492 11,800 57.9 2.5 71 69 40:1
6" Standard Air Knife 20.4 577 11,000 55.9 2.7 77 83 30:1
6" Full-Flow Air Knife 18.6 526 10,000 50.8 2.3 65 80 30:1
   Velocity and force measured at 6" (152mm) from target
   Sound level measured at 3' (914mm)
   All measurements taken at 80 PSIG (5.5 BAR)

The Super Air Knife provides the best performance with a 40:1 air amplification ratio, making it the most efficient. It is the best choice for all applications. The Super Air Knife has a laminar airstream that is uniform, forceful and quiet. Velocity is the highest of all three air knives. Air consumption is lowest of all three air knives. Compressed air inlets are provided on each end and on the bottom. Multiple Super Air Knives can be mounted "end to end" for longer lengths of uninterrupted airflow.

  • Best choice for all applications
  • Lowest operating cost
  • Highest efficiency (saves most air)
  • Quietest
  • 40:1 air amplification ratio
  • Compressed air inlets on each end and the bottom
  • Airflow length and overall length are the same

 

The Standard Air Knife provides good performance with a 30:1 air amplification ratio that is less efficient than the Super Air Knife. It is a good choice when a less expensive alternative is required. The Standard Air Knife has an airflow that is also uniform and forceful. It is louder and uses more compressed air than the Super Air Knife. Compressed air inlets are provided on each end. Overall length is 1" (25mm) longer than the airflow length.

  • Good choice, lower purchase price
  • Highest operating cost of the three
  • Good velocity
  • Higher dBA rating
  • Compressed air inlets on each end
  • Overall length is 1" (25mm) longer than the airflow length

Full-Flow Air Knife provides good performance with a 30:1 air amplification ratio. The Full-Flow Air Knife is the least expensive and is a good choice for tight spaces. Force is less than the other two. Air consumption and sound level falls between that of the Super Air Knife and the Standard Air Knife. Compressed air inlet(s) are provided on the rear. Inlets are available on each end at a small additional charge, however they are not recommended for applications where uniform flow across the length is required.

  • Good choice, lowest purchase price
  • Higher operating cost than the Super Air Knife
  • Smallest size
  • Airflow length and overall length are the same

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