EXAIR’s Soft Grip Safety Air Gun Provides Safety & Efficiency Benefits

The Soft Grip Safety Air Gun is in stock for immediate shipping and has a durable cast aluminum body that is suited for rugged industrial use.  The ergonomic design has a large trigger and a soft, comfortable grip for easy operation and keeps the hand in a comfortable position for extended periods of use. A convenient hook hanger allows for easy storage when not in use.  Aluminum Extensions (up to 72″ long) and Stay Set Hoses (up to 36″ long ) can be fitted, providing access to hard to reach places. Chip Shields are available for most models, protecting operators from flying debris, helping to meet an important part of OSHA’s requirements for the safe use of compressed air, OSHA Standard 1910.242(b).

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The Soft Grip Safety Air Gun can be configured with over a dozen nozzle options, with air consumption as low as 2.5 SCFM @ 80 PSIG of supply pressure and up to 60 SCFM if needed.  Nozzle materials include Zinc Aluminum alloy, 316 Stainless Steel, and PEEK (a thermoplastic polymer.)

Use of an EXAIR Soft Grip Gun with an Engineered Air Nozzle will provide a safe and efficient use of compressed air, reduce energy costs, and eliminate harmful dead end pressures (again, helping to comply with the OSHA standard for safe use of compressed air.)

When outfitted with EXAIR’s engineered air nozzles, the Soft Grip Safety Air Gun is a powerful ally to reduce personnel noise exposure and protect them from noise induced hearing loss. This is another important safety feature complying with OSHA’s standard 29 CFR-1910.95(a).

The Soft Grip Safety Air Gun can be configured to meet applications from delicate blowoff of electronic circuit boards to large chip removal in metal cutting operations, and everything in between.

If you have questions regarding the Soft Grip Safety Air Gun, or would like to talk about any EXAIR Intelligent 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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EXAIR Super Air Nozzles: 38 Day ROI Saves Money

Blow off station

I received an email from an engineer that was looking at our Super Air Nozzles.  They currently were using four blow-off lines that were made from 6mm ID copper tubes.  (Reference picture)  The system was designed to blow out holes after machining.  The engineer was in charge of the task of optimizing 25 machining stations similar to this one.  He was familiar with EXAIR products from his previous employment, and he recognized the waste of compressed air by using open pipe.  He purchased four Nano Super Air Nozzle, model 1110SS, for a trial.  He was impressed with the performance, the low sound level, and the engineered design in safety.  But, for upper management in his company, he had to show a cost savings in order to change all the stations in the facility.  He asked me to help him in calculating the compressed air savings.

He gave me some additional details about their application.  He was using the compressed air about 30% of the time throughout an 8 hour day at a pressure of 80 PISG.  He wanted to present the savings per day, week, and year as well as the payback period in his evaluation.  I have performed many of these calculations for other customers and was happy to help.  It is sometimes easier to speak in terms of savings, as everyone can relate to money, especially management.  (The numbers below can be adjusted to match your application and blow-off devices).

Knowns:

Cost of compressed air: $0.25/1000 cubic feet of air (this is based on $0.08/Kwh of electrical cost)

Flow: 1110SS Nano Super Air Nozzle – 8.3 SCFM at 80 PSIG

Flow:  6mm ID copper tube – 42 SCFM at 80 PSIG

 

The difference in compressed air flows from a 6mm tube to the Nano Super Air Nozzle is (42 SCFM – 8.3 SCFM) = 33.7 SCFM.  At a 30% duty cycle, we get 33.7 SCFM * 0.3 = 10.2 SCFM (cubic feet/minute) of additional compressed air being used.

Per day, the additional amount of compressed air wasted is:

10.2 cubic feet/minute * 60 min/hr * 8 hr/day (one shift) = 4,896 cubic feet per day.

Per week, the additional amount of compressed air wasted is:

4,896 cubic feet/day * 5 days/week = 24,480 cubic feet per week.

Per year, the additional amount of compressed air wasted is:

4,896 cubic feet/day * 250 days/year = 1,224,000 cubic feet per year.

 

With the cost to make compressed air at $0.25/1000 cubic feet, we have the following:

4,896 cubic feet/day * $0.25/1000 cubic feet = $1.22 per day

24,480 cubic feet/week * $0.25/1000 cubic feet = $6.12 per week

1,224,000 cubic feet/year * $0.25/1000 cubic feet = $306.00 per year.

From these values, the payback for a model 1110SS Super Air Nozzle is just under 38 days.  Because the EXAIR Super Air Nozzles are so efficient, some utility companies will offer a rebate program to use them.  This will improve your ROI even more.  (We can check to see if your local electric company participates in these programs).  Just think, the remaining life of the Super Air Nozzle will be using less compressed air and saving much money for the company.

The calculations above are only for one nozzle.  As discussed above with the engineer, they had 4 tubes/station and 25 stations in their plant.  So, if you multiply each figure by 100, you can see the large amount of money that can be saved.   The engineer presented these figures to upper management, and it was an easy decision to replace all the copper tubes with EXAIR nozzles.

Nano Super Air Nozzle

Don’t be fooled by the initial cost of a tube, pipe, drilled holes, or a substandard nozzle.  You can see by the facts above, if you use any additional compressed air in your blow-off application, it will cost you a lot of money in the long run.  If you need any help in calculating how much money EXAIR products can save you, you can use our Air Savings Calculator from our website, or you contact an Application Engineer at EXAIR.  We will be happy to help you.

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

Crescent Hammers, Phillips Head Punches, and Other Cautionary Tales

I don’t want to sound “preachy,” but I’m a stickler for using the right tool for the job. Case in point: just the other day, I noticed (OK; my wife told me about) a loose drawer handle. I went to my toolbox in the garage to get a flat-head screwdriver, even though the drawer in question had a selection of butter knives, any one of which could have been used to tighten that screw.

I can trace this, without doubt or hesitation, to my service in the US Navy, under the direction of Senior Chief Cooper.  Proper tool selection & use was VERY important to him.  He stressed the issues of safety, quality, and performance, but if that didn’t work, he’d make his point with an offer to demonstrate the use of a specific tool (a ball peen hammer) on a sensitive part of your anatomy (it’s exactly the part you’re thinking of.)  At that point, it would have been unwise (and unsafe) to question whether that was a proper use of the tool or not.

Only one of these is a hammer………………..….only one of these is a punch………………..…..only one of these is a chisel.
Choose wisely.

Likewise, there are safety, quality, and performance issues associated with compressed air blow offs.  At EXAIR, we’re ALL sticklers about this, and we get calls all the time to discuss ways to get more out of compressed air systems by using the right products.  Here’s a “textbook” example:

A hose manufacturer contacted me to find out more about our Air Wipes, and how they might be a better fit for their various cleaning & drying applications (spoiler alert: they are.)  The blow offs they were using were made of modular hose, designed (and very successfully used) for coolant spraying in machine tools.

Only one of these is a compressed air blow off. Again…choose wisely.

The selection process was two-fold: they purchased one Model 2401 1″ Super Air Wipe to verify performance, and they sent in some of their modular hose assemblies for Efficiency Lab testing.  The first part was just as important as the second because, no matter how much air they were going to save (another spoiler alert: it was significant,) it wouldn’t matter if it didn’t get the job done.  At the station shown above, the Super Air Wipe resulted in superior performance, and a compressed air cost savings of over $400.00 annually.  For that one station.  Based on that, they outfitted TWENTY FIVE stations with engineered product sized for their different hoses, using our Model 2400 (1/2″), 2401 (1″), 2402 (2″) and 2403 (3″) Super Air Wipes.

If you’d like to find out how using the right product for the job can help your operation, give me a call.

Russ Bowman
Application Engineer
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PEEK Super Air Nozzles Resist Corrosion; Won’t Scratch Sensitive Surfaces

Because they might be needed in some pretty aggressive environments, EXAIR offers many of our Intelligent Compressed Air Products in a variety of materials. One particular material of construction, however, has two distinct benefits. PEEK (Polyether Ether Ketone, for those of us who ruined the grading curve in CHEM102) plastic offers not only superior chemical corrosion resistance; it’s also non-marring. Since EXAIR introduced the first PEEK Super Air Nozzle in 2005, they’ve been specified all over the world; sometimes for their corrosion resistance; other times so they won’t mar or scratch sensitive surfaces…and every once in a while, for both.

I recently had the pleasure of discussing blow off applications with the production manager of a large anodizing & plating company. The chemicals used in these processes are extremely corrosive, and the equipment used in those areas has to be made of something that’ll handle it. PEEK plastic is just such a material. Also, once they’ve treated their customers’ parts, they need to handle them with care…they’re getting paid a premium to provide nice, shiny parts with a perfect finish. When they’re blowing them off, they need to use something that won’t scratch up the surface if the operator makes incidental contact with the blow off tip. Again, PEEK plastic is just such a material.  Since their existing blow offs were fitted to 1/8 NPT connections, they chose the Model 1102-PEEK Mini Super Air Nozzle.

EXAIR’s PEEK Super Air Nozzles can be mounted in place or on a Safety Air Gun, depending on your needs.

Corrosion resistant and non-marring…EXAIR offers our PEEK Super Air Nozzles in six sizes, from the Atto (M4x0.5 threads; 2.5 SCFM; 2 oz force applied) to our High Force Model 1104-PEEK (3/8 NPT threads; 35 SCFM; 1.9 lbs force applied) for an incredibly diverse range of applications.

If you’d like to discuss what material(s) of construction your application(s) require, give me a call.

Russ Bowman
Application Engineer
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Replacing Unsafe Open Pipes with High Pressure Air Nozzles

Open pipes present unsafe working conditions and continuous pressure drops in compressed air systems

Let’s talk for a minute about pressure drops. Normally when the topic of pressure drops is raised, it comes in a context related to proper plumbing and volume supply.  (If there are significant pressure drops within a compressed air system, especially those which reduce volume flow, problems will arise with compressed air driven devices.)

But, there is another important aspect of pressure drops which relates to open pipe blow-off, a common homemade remedy for blow-off applications. This aspect has to do with the available compressed air pressure at the exhausting point from the pipe or nozzle.  In the case of an open pipe, it requires so much compressed air volume that, there can be a continuous pressure drop from the compressor to the open pipe.  However, when a nozzle is installed onto a compressed air pipe, there is a restriction to the flow and the entire pressure drop takes place across the nozzle.

What this means for the blow-off solution is a higher velocity blow-off and a more powerful force from the airflow, with less compressed air consumption.

To think of it another way, imagine the flow of water from your garden hose. If the hose is open-ended and the water is fully on, the flow will be high and the force will be low.  But, when you install a nozzle onto the end of the hose the flow reduces and the force increases.  This is because the pressure drop in the system is taking place across the nozzle rather than the entire system.

This type of a scenario was taking place in the image shown at the top of this blog. The plastic lines connected to the aluminum manifold were fully open on the end, providing a continuous pressure drop and poor blow-off performance.  This, coupled with the maximum operating pressure of similar types of hose being 35 PSI, led to a poor performance in this application.

The solution for this customer was to replace these open pipe blow-offs with EXAIR model 1126 Flat Super Air Nozzles and 12″ Stay Set Hoses, model 9262. The flat airflow of the 1126 Super Air Nozzles provide a highly efficient and forceful blow-off, and the Stay Set Hoses allow for articulation of the nozzles into any position needed.

By replacing these open pipes this customer saved compressed air, added safety (open pipes present an operating hazard per OSHA Standard CFR 1910.242(b)), and improved the performance of their operation.

If you have a similar application or would like to speak with someone about increasing the efficiency of your compressed air applications, contact an EXAIR Application Engineer.

Lee Evans
Application Engineer
LeeEvans@EXAIR.com
@EXAIR_LE

Offshore Pipe Welding Cooled with Series of EXAIR Super Air Nozzles

atoll_air-cooling-interpass-1

EXAIR model 1122 Flat Super Air Nozzles used to provide cooling blow off.

One of the services we provide to our customers, is assistance in selection of the most suitable product solution for their application.  For most applications we have solutions readily available from stock, though that wasn’t the case in the solution shown above.

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This unique blow off solution cools welds on 450mm (18″) pipes.

This configuration of model 1122 Flat Super Air Nozzles is used to cool pipe welds in an application located off the coast of France.  Pipes with an OD of 450mm (~18”) are welded together, and in order for the welds to be of the highest quality, they must be cooled.  To cool the welds, this customer needed to blow ambient temperature air over the pipes.

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Closeup of nozzles used in this application

Initially, we explored a Super Air Wipe solution.  A Super Air Wipe can provide a full 360° blow off for this pipe, but there was an aspect of the application which led to a better solution through nozzles; an irregularity in position of the pipe.

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Another view of the 1122 Flat Super Air Nozzles

The diameter of the pipes in this application is relatively constant, but there is some fluctuation in position as the pipe is moved.  If using a Super Air Wipe, this could mean contact with a precision machined surface, resulting in a change to the performance of the unit.  But, what if we could find a way to allow the blow off solution to have some “flex”.

swivels

Flat Super Air Nozzles with swivels provide the unique solution needed for this application.

“Flex” in this solution is provided through the use of EXAIR model 9053 swivel fittings, shown above with red circles, each used to mount an 1122 Flat Super Air Nozzle (16 of each).  These allow for proper placement of the nozzles, and also for movement if anything should ever contact the blow off solution.

An additional benefit of the EXAIR 1122 nozzles used in this application, is the ability to exchange shims inside the nozzle to increase or decrease the amount of force delivered from the nozzle.

Understanding the critical requirements of the customer led to this semi-custom solution using EXAIR Super Air Nozzles.  If you‘d like to explore an EXAIR blow off solution for your application, contact an EXAIR Application Engineer.

Lee Evans
Application Engineer
LeeEvans@EXAIR.com
@EXAIR_LE

EXAIR Atomizing Spray Nozzles Make It Nice & Foggy In Greenhouses

Fog. Nobody likes driving in it. It’s downright perilous to sailing vessels on the open water, but especially those near the shore, or other watercraft. Flights get delayed or cancelled, stranding travelers in airport terminals far from home, and keeping many from pressing matters that necessitated the speed of an airline flight in the first place.  Oh, and it’s ALWAYS where the bad guy is hiding in the movies.  You can tell by the ominous low-string music that starts playing right before things get real nefarious.

You know who LIKES fog, though?  Greenhouse operators.  Their plants get plenty of water to sustain their growth from the well-irrigated soil, but the leaves & petals can wither and get discolored if the humidity isn’t kept at a high level.

The same is true for the parts of a greenhouse that folks don’t see when they’re selecting the annuals to plant on the next nice spring weekend (which we should be coming up on quite soon here!) – like the seed germination chambers.  I had the pleasure of helping a greenhouse operator recently, who needed to replace some old, and malfunctioning, nozzles in one of their germination chambers.  They were interested in the extremely fine mist that our Atomizing Spray Nozzles produce.  After some experimentation with a couple of different flow rates & patterns, they determined that the Model AW1020SS (Wide Angle Round Pattern, Internal Mix) Atomizing Spray Nozzles provided optimal results.

The fine, atomized mist (left) produced by the EXAIR AW1020SS (right) optimizes the seed germination in this chamber.

The fine, atomized mist (left) produced by the EXAIR AW1020SS (right) optimizes the seed germination in this chamber.

As the fogging systems in their other chambers start to fail, they’ve been replacing them with the AW1020SS’.  We shipped them two earlier this week.

With (90) distinct models to choose from, we’ve got the solution to your liquid spraying application.

EXAIR Atomizing Spray Nozzles offer an incredibly wide range of flow rates, patterns, and adjustability to suit most any application that requires a fine liquid mist.  If you’d like to find out more, give me a call.

Russ Bowman
Application Engineer
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