Small, Precise Blowoff at Your Fingertips

For many blowoff applications, stronger isn’t necessarily better.  For applications and processes where a light, but effective blast of air is needed for cleaning and drying, the VariBlast Compact Safety Air Gun with the Atto, Pico, or Nano nozzle fits the bill. The smallest of the EXAIR engineered Super Air Nozzle family, the Atto, Pico, and Nano have been designed to provide the smallest, most precise blowoff possible. The focused airflow pattern allows for very accurate control and placement of the air stream.  The nozzles are available in both Type 316 Stainless Steel and PEEK plastic (useful for harsh environments, and is non-marring)

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The Atto, Pico, and Nano Super Air Nozzles (Scale is in Inches)

The new VariBlast Compact Safety Air Gun is a great choice for putting the power and performance of the nozzle into a small and lightweight air gun. Designed with a variable flow trigger, the airflow can be throttled from a whisper to full force, simply by varying the trigger pull distance.

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VariBlast Model 1698SS, with Stainless Steel Nano Super Air Nozzle

The Atto, Pico, and Nano nozzles use very little compressed air and are extremely quiet, easily meeting OSHA Standard 29 CFR 1910.95(a) for Noise Exposure.  The design incorporates engineered solutions for safety and can be supplied with higher pressure compressed air and meet OSHA Standard 29 CFR 1910.242(b), relating to dead end pressure requirements.

The table below provides performance data, including the compressed air consumption, force, and sound level for the various configurations.

VariBlast With Small Nozzles

Note that the VariBlast air guns can be had with extensions from 6″ to 72″ and chip shields to meet the performance and safety needs of any application.

The Atto, Pico and Nano Nozzles can also be configured to work with the Soft Grip style of Safety Air Gun.  Consult an Application Engineer for assistance in choosing.

If you have any questions about the Atto, Pico, or Nano nozzles, the VariBlast Compact Safety Air Gun, or any EXAIR compressed air product, feel free to contact EXAIR and myself or one of our Application Engineers can help you determine the best solution.

Brian Bergmann
Application Engineer

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Video Blog: EXAIR Atomizing Spray Nozzles Product Line

Want to learn more about EXAIR’s line of Atomizing Spray Nozzles?  This short video will familiarize you with their benefits, features, and capabilities.

Russ Bowman
Application Engineer
EXAIR Corporation
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EXAIR Flat Super Air Nozzles – Adjustable, Flexible and Powerful

As an Application Engineer here at EXAIR, we get calls from customers looking for an air knife, but shorter than our typical 3″ stocked size.  We can make an air knife to any length needed, but we will look at the 1″ and 2″ Flat Super Air Nozzles as a possible solution.

Like an air knife, the Flat Nozzles provide a wedge shaped pattern of air that maintains the width of the nozzle, to create a concentrated, powerful air flow.  Thus, a 1″ Flat Super Air Nozzle has air stream 1″ wide, and the 2″ Flat Super Air Nozzle has one 2″ wide.

The Flat Super Air Nozzles are available in zinc aluminum alloy or type 316 stainless steel construction, to meet environmental conditions of the process.  Both the 1″ and 2″ nozzles contain a changeable, patented shim that maintains the critical air gap, which allows the release of a precise amount of air through the thin slot, across a flat surface. The result is a wide, forceful stream of high velocity, laminar airflow, with minimal air consumption and noise.

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1″ and 2″ Flat Nozzles, in Zinc aluminum Alloy and Type 316 Stainless Steel

Shims are available in thicknesses of 0.005″, 0.010″, 0.015″, 0.020″, 0.025″, and 0.030″.  Shim Sets with either 2 or 3 shims are available for both sizes to allow for adjustment of the performance to best meet the application need.

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Patented, Interchangeable Shims

Table below shows the stock offerings of 1″ and 2″ Flat Super Air Nozzles, along with Air Consumption, Force and Sound Level data for your review.

Flat Nozzle Table

If you have any questions about the Flat Super Air Nozzles, or any EXAIR nozzle or other compressed air product, feel free to contact EXAIR and myself or one of our Application Engineers can help you determine the best solution.

Brian Bergmann
Application Engineer

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Stay Set Hoses & Magnetic Bases – Precise Positioning for your Blowoff Application!

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Once you’ve selected an engineered compressed air nozzle for your blowoff application, you’ll likely need a solution to mount and position it as well. In some applications you may be able to simply replace the old solution with a similar thread, but if the installation is a bit more complex, or if it is a new installation entirely, you’ll need a means to do so. Here’s where EXAIR’s Stay Set Hoses and Magnetic Bases come into play.

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EXAIR’s Stay Set Hoses are available from 6”-36” in length with ¼ NPT male threads on each end, or a ¼ NPT male on one end and 1/8 NPT female on the other. The Stay Set Hoses are rigid and allow you to maintain precise positioning of the blow off nozzle. The hoses have “memory” and will not creep or bend. They’re easily repositioned as well, making them an ideal solution for applications that may require moving them around due to varying parts.

Stay Set Hoses can also be installed on any Soft Grip Safety Air Gun. Simply adding a suffix to the end of the any of the Soft Grip Air Gun model numbers will come with the Stay Set Hose installed. For example, the gun below is a Model 1230-36SSH. A Model 1230 Safety Air Gun, with a 36” Stay Set Hose installed. Having a Stay Set Hose on your air gun can allow you to reach into tight or awkward places that a traditional air gun won’t permit.

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Model 1230-36SSH

In addition to the Stay Set Hoses, EXAIR also has Magnetic Bases available as well. The powerful magnet permits both horizontal and vertical mounting. A manual valve is also included that will allow you to vary the force and flow. Magnetic bases are available with one or two outlets and can be combined with any of our nozzles and Stay Set Hoses to create your own customized blowoff system.

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(2) 2″ Flat Super Air Nozzles w/ Dual Magnetic Base and 12″ Stay Set Hose

No matter the application, EXAIR has a solution for your blowoff. Give an Application Engineer a call today and we’ll help you determine EXACTLY what you’ll need with all parts available from stock!

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

People of Interest: Henri Coanda June 7, 1886 – November 25, 1972

Henri Coanda was born in Bucharest, Romania on June 7 1886 in a large family with five brothers and two sisters. His father, Constantin M. Coanda, was a decorated Romanian soldier and following in his footsteps he also enlisted in the military. He finished his military education with high honors, but his keen interest in flying and his desire to achieve this sent him down a much different path.

Coanda attended a technical university in Germany and also attended the Superior Aeronautical School in Paris where he graduated at the top of his class with the highest of honors. In less than a year, he had partnered with Gianni Caproni, another known aviator, to construct what was called the Coanda-1910. This aircraft was displayed in Paris at the Second International Aeronautical Exhibition. But, unlike other planes of this time, Coanda’s aircraft did not have a propeller. The plane had an oddly shaped front with built-in rotary blades arranged in a swirling pattern. It was driven by an internal turbine screw that would suck air in through the turbine while the exhausting gases exited from the rear, driving the plane forward by propulsion.

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As impressive as this jet engine was, no one believed that it could fly. It is not believed that it ever did achieve flight, despite some contradictory claims by Coanda himself, but was instead struck by disaster. It is rumored that as Coanda injected more fuel into the engine, he was surrounded by flames, thrown from the craft and was lucky to make it out alive. Coanda is not credited as the inventor of the first jet plane, but it is his technology that sky rocketed future aviation research and provided perspective into how jet engines should be built.

Coanda is most known today for his research into what is now known as the Coanda Effect, or propensity of a fluid to adhere to the walls of a convex surface. It is this principle that creates lift on an airplane wing and is also the driving force behind many of EXAIR’s Intelligent Compressed Air Products. If you’d like to discuss how the Coanda effect is utilized in a Super Air Knife, Super Air Amplifier, or Super Air Nozzle give us a call!

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

 

Jet Engine image courtesy of Luke Healy via Creative Commons License

Super Air Nozzles; Rebates, Environmental Protection, and Energy Savings.

Family of Nozzles

Recently, I wrote a blog, “Flat Super Air Nozzles: Build Your Own System Overview”.  It described how the Flat Super Air Nozzles could be used singly or joined together with accessories for flexibility in your application.  In addition, it demonstrated the amount of compressed air savings and reduction in energy consumption to save you money.  Tyler Daniel, a colleague, wrote a similar blog on “ROI – Is it Worth the Investment?”  He explains the quick payback or ROI (Return on Investment) by using EXAIR Super Air Knives.  In both posts, the word “Super” is intertwined with the product name.  To expand a bit further, the word, “Super” is more than just a word.  It is about cost savings, efficiency, and energy conservation.   In this post, I will dive a bit more into the reasons why EXAIR uses the word, “Super”, and how it can help you.

When EXAIR started to manufacture compressed air products, we created a culture in making high quality products that are safe, effective, and efficient.  Being leaders in this industry, we created a program, the Efficiency Lab, to compare blow-off devices with EXAIR products in noise levels, flow requirements, and force measurements.  With calibrated test equipment, we compare the data in a qualified report to share with our customers.  This information can be helpful to determine the total amount of air savings and safety improvements that EXAIR products can offer.

With the total amount of energy savings that the EXAIR products can provide, EXAIR was able to partner with Energy Star and the Environmental Protection Agency.  This commitment by EXAIR for reducing energy to protect the environment for future generations is a cornerstone for our business model.  Compressors use electricity to produce compressed air.  In most industries, they consider compressed air as a fourth utility.  If you have pneumatics in your facility wouldn’t it be best to use it, and the electricity it requires, as efficiently as you can?

In conjunction with the Efficiency Lab, we created a Cost Savings Calculator.  It is a quick way to view payback periods and annual savings when using EXAIR products.  As an example, I used a 1” Flat Super Air Nozzle, model 1126, and compared it to a 1/8” open pipe.  (The reason behind the comparison is that the model 1126 can screw onto the end of the 1/8” NPT pipe.)  With an operation of 24 hours/day for 250 days a year, the amount of air used by an 1/8” open pipe is near 70 SCFM (1,981 SLPM) at 80 PSIG (5.5 Bar).  The model 1126 has an air consumption of 10.5 SCFM (297 SLPM) at 80 PSIG (5.5 Bar).  By putting the information in the Cost Savings Calculator, it determined that the ROI was in 2.1 days.  The annual savings was $5,355 per year.  Imagine if you replaced ten blow-off spots in your facility, the amount of money that could be saved.  Here is the worksheet below:

Why did I bring this up?  Besides showing the “hidden” extra cost that is wasted when using sub-standard blow-off devices, it also shows the amount of compressed air that was saved.  By using the model 1126, we were able to save 21,420,000 cubic feet of air per year (596,043 cubic meters of air per year).  With this amount of energy savings, people take notice.

The people that did take notice were the utility companies that make electricity.  Depending on your location, electrical suppliers initiated a rebate program to use engineered nozzles in your facility.  Similar to other energy saving rebates, like LED lightbulbs and high efficiency furnaces, the electrical providers notice a big savings when using EXAIR products.  If you qualify, the total cost to purchase and implement the EXAIR Super Air Nozzles are reduced.  (Even if a rebate program has not been implemented in your area, the idea of saving energy and compressed air makes it very profitable and environmentally sound in changing over to EXAIR products).  The website is DSIRE.  “DSIRE is the most comprehensive source of information on incentives and policies that support renewables and energy efficiency in the United States.”  Check it out to see if your area has instituted a rebate program.

When EXAIR uses the word “Super”, it is much more than just an adjective.  It shows the quality and precision that EXAIR uses in manufacturing our products, and the amount of cost and energy savings that can be generated.  Being backed by Energy Star, EPA, and rebate programs, EXAIR can help companies to upgrade their pneumatic systems.  Together, we can save energy, improve the environment, and reduce compressed air.  If you would like to discuss how EXAIR can work for you, you can contact an EXAIR Application Engineer to see if we can put the word, “Super”, into your compressed air program.

John Ball
Application Engineer
Email: johnball@exair.com
Twitter: @EXAIR_jb

What Is Entrainment?

Entrainment is defined in the simplest of terms as: to draw in and transport (something, such as solid particles or gas) by the flow of a fluid.

EXAIR’s Intelligent Compressed Air® products use the principle of entrainment to give you more volume than the compressed air being introduced from your air compressor.  This is very important considering that the standard cost for compressed air is $0.25 per 1,000 Standard Cubic Feet (SCF) and is commonly called the 4th utility. Any pipe, manifold, or fitting can be modified to blow compressed air, however, these homemade blow offs will be very noisy and waste a tremendous amount of compressed air.  In contrast EXAIR’s intelligent compressed air solutions are engineered to be very quiet and use conservative amount’s of compressed while multiplying the output volume through entrainment.  They also comply with OSHA safety standards.

Let’s consider the EXAIR Model 1100 Super Air Nozzle as an example. It comes with either a 1/4 MNPT or 1/4 FNPT threads and will produce 13 ounces of force at a distance of 12″ from the nozzle. All while consuming a relatively modest 14 SCFM of compressed air. To produce that much force using that small amount of air, the Super Air Nozzle is intelligently designed and manufactured to exacting standards to maximize the entrainment of the surrounding ambient air.

To explain how this works compressed air is used to induce the primary air flow. This primary air flow is a high velocity jet of air that creates a low pressure area around nozzle which entrains the ambient or free air. The air streams combine past the tip of the nozzle creating a powerful blast of air. The Super Air Nozzle can entrain air up to 25 times more than the primary compressed air feed.  All EXAIR’s Super Air Nozzle’s create this level of air entrainment.

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EXAIR Super Air Nozzle entrains ambient air up to a 25:1 ratio

In addition to entraining a significant amount of air, the Super Air Nozzle also reduces the noise level. Most homemade nozzles are not well constructed so, the hole(s) that allow the air to escape may have sharp jagged edges which will induce noise or turbulence. Even commercial nozzles with cross drill holes create a tremendous amount of wind shear which leads to an ear splitting compressed air squeal. The smooth design of the Super Air Nozzle creates a laminar flow of air that reduces the noise of the nozzle to 74 dBA at a distance of 3′ from the nozzle. For reference a 1/4″ open tube can easily create noise levels over 100 dBA. Using EXAIR compressed air nozzles can greatly reduce the amount of noise in and around your shop.

Last but certainly not least the EXAIR Super Air Nozzle complies with OSHA standard 29 CFR 1910.242, which requires that all nozzles that use compressed air over 30 PSIG must provide a point of relief in case the nozzle is dead ended and OSHA Standard 29 CFR – 1910.92 (a) for maximum allowable noise exposure. EXAIR Super Air Nozzle uses multiple orifices that are recessed, so that the air always has a path of escape. Many homemade nozzles do not have any provision to protect from dead ending and are very loud which does not comply with the OSHA noise standards.

If you would like to discuss increasing the efficiency of your compressed air usage, quieter compressed air products and/or any EXAIR product,  I would enjoy hearing from you…give me a call.

Steve Harrison
Application Engineer
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