EXAIR Safety Air Guns: Quiet, Safe, And Efficient Blowoff (Literally) In The Palm Of Your Hand

One of the more popular uses in industry for compressed air is blowing off parts or products, and one of the more convenient methods of doing so is by use of a handheld blow off device.  Given this combination of popularity and convenience, the manufacture and use of air guns is prolific.  They come in all shapes & sizes, and can be made simply and cheaply.

Simple and cheap is fine, in most cases, for the air gun itself.  The part that the air comes out, however, can make all the difference in the world when looking at the cost of operation, environmental effects, and the ability to use the device safely:

  • Cost of operation: the simplest design of an air gun is a trigger device that starts & stops the flow of compressed air through an open discharge.  Throttling this down through a narrow passage increases the velocity of the air flow, making for a more powerful blast of air.  Thing is, this still uses a LOT of compressed air to create that powerful blast…much more than an engineered product. 
  • Environmental effects: By this, I mean noise.  Air guns with a simple open discharge can be LOUD – over 100 dBA in many cases.  It’s been well documented, for a long time, that high noise exposure is bad for operators’ health…and not just in the obvious manner of hearing loss.  Among these other effects are high stress, hypertension, and sleep disorders.
  • Safe use: Open ended blow offs are in violation of OSHA’s directive 1910.242(b,) which regulates the use of compressed air for cleaning purposes.  The big hazard is dead-ending the device into your body…the pressurized air can literally tear your skin open, and inject itself inside.  This creates a dangerous and often life-threatening condition known as an embolism.
Thumb guns are a perfect example of the above mentioned “popularity and convenience.”  They can be made efficient, quiet, and safe by replacing the open end discharge fitting with an engineered product like the EXAIR Super Air Nozzle.  Chip Shields provide additional protection for blown back particulate as well.

EXAIR Corporation offers a diverse line of Safety Air Guns that address all three of these items:

  • Our Super Air Nozzles use a smaller amount of compressed air flow to entrain an enormous amount of “free” air from the surrounding environment to generate a resultant high volume, high velocity air flow.  So you get the same job done, using less compressed air.
  • Another benefit to their specific design is that the entrained air forms a boundary layer that attenuates the sound level of the primary flow, resulting in extraordinarily quiet operation, while still producing a very usable air flow.
  • And…they’re fully compliant with OSHA 1910.242(b) because they can’t be dead ended.

If you’re looking for additional encouragement to try one out, consider this:  Order an EXAIR Safety Air Gun right now, and get a FREE Model 1126 1″ Flat Super Air Nozzle.  This versatile little engineered blow off device has a number of applications…not the least of which involves its installation on an air gun.

Whichever Safety Air Gun you buy, you get to try a 1″ Flat Super Air Nozzle too.

If you’d like to talk about efficiency, sound level reduction, and safety in regard to your use of compressed air (hand held or other,) give me a call.

Russ Bowman
Application Engineer
EXAIR Corporation
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Undersized Regulators Create Performance Problems with Compressed Air

“I have a Cabinet Cooler installed on my panel but it isn’t getting the temperature down cold enough. Can you quote me for a duplicate system to install on this panel?” This was a recent inquiry from a customer regarding an electrical enclosure that they had installed in their plant. The Cabinet Cooler was producing cold air, but not enough to keep the cabinet at their desired temperature. It would seem logical that they need additional capacity, right? While that could be the case, in this instance it most definitely was not.

When we get questions like this, we first want to take a closer look at the current installation. The cooling capacity for each system is published in our catalog. BUT, in order to rate a cooling capacity for any type of cooling system, some assumptions must be made. All Cabinet Coolers are specified with 70°F compressed air fed to the Cabinet Cooler at a pressure of 100 PSIG. In addition, each cooler has a specified volume of air that it must utilize in order to produce that rated cooling capacity. If any one of those parameters change, so does the overall cooling power.

In this particular case, the customer had installed a non-EXAIR pressure regulator just upstream of the cooler. Upon looking at the specifications for this regulator, it was found that the overall volume of air it can deliver was just 10% of the overall volume needed to produce the rated 1700 Btu/hr. They didn’t need another Cabinet Cooler System, they just needed to remove that restriction! Upon learning that it needed 100 PSIG, they removed the regulator and supplied full line pressure. No more heat alarms for that shift!

CC undersized valve

Rather than purchasing and installing an unnecessary system, they were able to get back up and running just by removing the problem upstream. At EXAIR, we want to make sure that you’re getting the most out of our products. Just because you call and inquire about a new purchase doesn’t necessarily mean that you need it. We’re here to help you determine if something is afoul with the current setup and make sure you have all of the knowledge necessary to rectify it.

We’re right in the middle of summer, and boy is it hot out there. If you have panels that are overheating and creating problems for you in your processes, give us a call. With Cabinet Cooler Systems ready to ship same day from stock (with properly sized regulators) you can have it fixed by tomorrow.

Tyler Daniel
Application Engineer
E-mail: TylerDaniel@EXAIR.com
Twitter: @EXAIR_TD

Know How Much Money You Can Save with EXAIR’s Efficiency Lab

 
Free testing. Verifiable data. EXAIR Efficiency Lab.

When it comes to buying new gear for any kind of outdoor hobby the research almost becomes a full-time job to decided what to get. When I’m hanging 200 ft. in the air off of a single rope, I want to make sure that my harness, rope, and all my other gear is top notch and not going to fail me as my literal life is hanging on the line. Sometimes it would be nice to have a professional climber standing there telling you all of the pros and cons, what they like and dislike about it, and weather it’s worth the buy. Outdoor gear is expensive and climbing equipment is no exception, in an ever-changing world of innovation new things are coming out every week and is just to hard for one person to keep up with.

Similarly, EXAIR has multiple product lines, many new products, and countless applications for our products. That is where our Application Engineers come in; as experts on our products and their applications we can provide in-depth knowledge on the various uses and expected outcomes. 

EXAIR’s Products in action

EXAIR has been making compressed air products since 1983, and have since created a culture of making high quality, safe, and efficient compressed air products. With this in mind we started the Efficiency Lab program for people to take advantage to test your current pneumatic blow-off device and compare it to an EXAIR Intelligent Compressed Air product. We will generate a detailed report on our findings and send it to you for your review. This free service provided to U.S. and Canadian companies allows people to test and look into possible upgrades and cost savings.

During my time as a project and process engineer at Valeo and Tyson I wish I had known about this service.  The Efficiency Lab allows you to look at what your current process is, whether it is an open-ended pipe or some other nozzle and have EXAIR compare it to an EXAIR product for free. Its like getting a free inspection of all your gear and having an expert help you find the best replacement if needed.

You may be wondering why we offer this service; it’s simple, compressed air can be expensive and we want to save you money. Not only are open ended pipes unsafe and can violate OSHA Standards on both dead-end pressure and noise level, but they also use a lot of compressed air. To operate an 1/8” open pipe you are looking at over $2000 a year for just one pipe; there isn’t a single plant that is just going to use one pipe. That is a lot of money that can add up over time, which could easily be saved by changing out what you are using.

The Efficiency Lab is quite simple to use. The simplest way is to contact us (my info below) and we can exchange the information needed to get your product into EXAIR. Once received, we will proceed. We will then calibrate the equipment and standardized procedures to test for noise level, air consumption, and force generated. Based off of this information we will recommend a similar product. Don’t be afraid, let us take care of the hard part of choosing which product is best for your application. If you cannot send any product in, use our  Product Efficiency Survey to provide as many details as possible. 

If you have any questions about compressed air systems or want more information on any of EXAIR’s 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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When Air Flow, Not Force, Makes The Difference

I recently had the pleasure of talking with a CAGI Certified Compressed Air Systems Specialist, who was working with a client to improve energy efficiency in the use of their compressed air. One particular application that was particularly taxing on their system is the use of hose barb fittings (basically, an open blow device) to fold over a cardboard box flap on a packaging line.

We discussed the possibility of trying something out, but the client wanted to look at some data, showing what their expected savings could be. Hose barb fittings are quite common, and they DO focus the flow of a compressed air discharge into a forceful little blast, which is quite effective at folding a box flap.

The client’s main concern was the force applied. In truth, there’s no better way to maximize force than by discharging a compressed gas directly through an open ended device. Excessive force, however, isn’t the only way to solve an application like this, as I proved in a test in our Efficiency Lab.  Here’s what happened:

EXAIR 1″ and 2″ Flat Super Air Nozzles can be fitted with a variety of shims for variable performance.
  • All of them folded the box flap easily.  The Model HP1125 folded it just as far as the hose did in the test I rigged, and with a 37% reduction in compressed air consumption.  The others folded it very nearly as far, with 62% (Model 1122) and 70% (Model HP1126) reductions.
  • Not to mention the drastic reduction in noise levels.

Lastly, I documented it all in a short video:

We field calls all the time from callers wanting to know how much force our Intelligent Compressed Air Products can generate.  Applications like part ejection do indeed require a certain amount of force to, say, move an object in motion from a conveyor belt…that’s just physics.  Most blow off applications (and folding over a flat box flap, for instance,) just need air flow…which engineered products from EXAIR Corporation can handle just fine, and at a fraction of the compressed air use & sound levels associated with open end blowing devices.

If you’d like to find out how EXAIR Corporation can help save you money on compressed air consumption, and ear plugs, give me a call.

Russ Bowman
Application Engineer
EXAIR Corporation
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Air! image courtesy of Barney Moss  Creative Commons License