EXAIR Flat Air Nozzles: Powerful, Quiet, Safe and Adjustable

Are you tired of your current compressed air being so loud? Well then, we have a solution for you; EXAIR’s Flat Super Air Nozzles. The patented design of the 1” and 2” Flat Super Air Nozzles makes it great for applications that require a powerful but precise flat stream of air. The Flat Super Air Nozzles work much like our Super Air Knives, the main difference being that the Flat Super Air Nozzles provides a more forceful stream of air. The design of the Flat Super Air Nozzles also provides a greatly reduced sound level.

2″ Flat Super Air Nozzle

EXAIR’s Flat Super Air Nozzles are safe, reliable, and efficient. The nozzles are specifically designed in a way to prevent dead head pressure as stated in OSHA Standard 1910.242(b). The directive stats that compressed air used for cleaning purposes can not exceed a dead-end pressure of 30 psig. If a dead-end pressure were to exceed that pressure then there is potential for an air embolism to form. EXAIR has designed our Flat Super Air Nozzles so that they cannot be dead-ended; this allows you to run at a typical 80-100 psig from your compressed air system.

Various Applications of Flat Super Air Nozzles

EXAIR Flat Super Air Nozzles are designed to also be quiet while operating at those higher pressures. When operating at 80 psig the 2” Flat Super Air Nozzle is going to have a sound level of 77 dBA were as the 1” Flat Super Air Nozzle when operated at 80 psig is going to have a sound level of 75 dBA. The higher the pressure the more air is going to flow through the nozzle; the more air flowing though the nozzle the louder it is going to be.

2″ Flat Super Air Nozzle

EXAIR’s High Power Flat Super Air Nozzles are designed for those tougher applications where you need more force, and will operate at slightly louder levels. The HP series Flat Super Air Nozzles have a thicker shim in them that allows for more air to escape out the end delivering a high force. The High powered 2” Flat Super Air Nozzle when operated at 80 psig has a sound level of 83 dBA where the 1” is only 82 dBA.

All of EXAIR’s flat Super Air Nozzles are designed with an internal patented shim which allows for adjusting the total volume of airflow and force that the nozzle produces. These shims are available in different thicknesses and aid in keeping noise levels down, provide gross adjustment of airflow and the flexibility for achieving a successful application. 

If you have any questions or want more information on EXAIR’s Flat Super Air Nozzles or any of our products, give us a call, we have a team of application engineers ready to answer your questions and recommend a solution for your applications.

Cody Biehle
Application Engineer
EXAIR Corporation
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Is It Safe To Use Compressed Air?

Think about it…compressed air is, by definition, gas under pressure: potential (stored) energy.  This energy is intended to do work, like operation of pneumatic tools, actuation of pneumatic cylinders, debris removal with an air gun or blow off device, and (even though I haven’t done it in a while) my personal favorite:

High pressure compressed air is meticulously made, prepared, and stored to ensure the number of surfaces equals the number of dives.

Uncontrolled, unplanned, or accidental releases of stored energy (regardless of the source) are inherently dangerous, and great care must be taken to guard against such incidents.  This is accomplished, primarily, in three areas:

*Operation.  This might be the most prevalent, because it involves the greatest number of personnel (e.g., everyone) as well as the ways compressed air is used (e.g., all of them.)  It’s also the area where the most involved people (the operators) have the most control:

  • Personal protection.  Don’t even think about operating a compressed air device without eye protection.  Ever.  Hard stop.  Also, if the operation involves flying debris, a full face shield, long sleeves, gloves, etc. might be called for.  Hearing protection may be required as well…keep in mind, even if an engineered device (like any of EXAIR’s Intelligent Compressed Air Products) generates a relatively low sound level, the impingement noise of the air flow hitting the object can reach dangerous levels.
  •  Personnel cleaning is prohibited.  The risk of injury to the eyes, respiratory system, and other parts is just too great to rely on personal protective equipment that’s designed for use while discharging compressed air AWAY from the body.  While this is expressly prohibited in certain situations, OSHA has long recognized it as good practice for all industries.
  • No horseplay.  ’nuff said.  Plenty of better ways to have fun at work.

*Design.  This one usually has the advantage of being traceable to a small number of people, and is also the one that’s most likely to be documented.  This is where it starts…if the system is designed to fail, it doesn’t matter how much care the operators take:

  • Supply lines, fittings, and hoses must be rated for use with compressed air, up to and exceeding the maximum discharge pressure of the air compressor.
  • This goes for any tools, blow off devices, components, etc., serviced by the air system.  The only thing worse than a component failing is a component failing in your hand.
  • Shut off valves should be located as close as practical to point(s) of operation.  This allows you to quickly secure the flow of compressed air to a failed component, hose, etc., and prevent further damage or risk of injury.
  • Hoses shouldn’t be run across the floor, where they can become a trip hazard or subject to damage from stepping on them.   This is a surefire way to find out the value of shut off valves (see above.)

*Product specification.  Or, more simply put, using the right tool for the job.  A broader discussion could include efficiency and performance, but we’ll stay within the confines of safety for the purposes of this blog:

  • Be mindful of dead end pressure.  Blow off devices, especially hand held ones like air guns, are oftentimes fitted with a simple open-end discharge.  If this is pushed into a part of the body, the pressurized air can break the skin and cause an air embolism.  This is a serious injury, and can be fatal if it reaches the heart, lungs, or brain.
    • This is a key consideration to OSHA Standard 1910.242(b), which limits the downstream pressure when compressed air is used for cleaning to 30psi.
    • EXAIR products are compliant with this Standard by design…there’s always a relief path for the air pressure; they can’t be dead ended.

Because the compressed air exits through a series of holes, recessed between a ring of fins, any attempt to block the air flow will simply send it in another direction.

  • Harmful sound levels are a consideration as well.  As stated above, hearing protection is required in many cases, but sound levels can be mitigated through the use of engineered products.  EXAIR Intelligent Compressed Air Products, as a result of their high entrainment, generate a boundary layer of air flow that leads to dramatically lower sound levels than a similar-sized open end blow off device.

If you’d like to explore ways to make your compressed air system safer, give me a call.

Russ Bowman
Application Engineer
EXAIR Corporation
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