Not All Compressed Air Guns Are The Same

If you work in an industrial plant or manufacturing environment, chances are you use some type of compressed air gun for cleaning parts, work areas, etc. Many air guns purchased through large industrial suppliers are a common choice due to the cost of the gun but as the saying goes – “you get what you pay for”. These types of guns may be cheap to purchase but they are also made cheap and have parts that can break easily, like the trigger or nozzle. In many cases, the nozzles on these guns are also in violation of OSHA requirements, producing dangerous discharge pressures and loud noise levels, which can lead to costly fines or potentially deadly injuries.

EXAIR offers 5 different styles of Safety Air Guns that not only eliminate these concerns, but also provide a more efficient operation, which can reduce energy costs. All of our Safety Air Guns are fitted with our engineered Air Nozzles  which meet OSHA Standard 1910.242(b) for 30 PSI dead end pressure, as they provide a relief or safe path for the air to exit if the nozzle were to be blocked or pressed against an operator’s body so the exiting air pressure will never reach 30 PSIG. They are also engineered to entrain surrounding air across the profile of the nozzle, which produces a smoother airflow, ultimately reducing wind shear, resulting in much lower sound levels, meeting OSHA Standard 29 CFR 1910.95(a).

 

 

The Precision Safety Air Gun body is made of a durable high impact, glass reinforced nylon, providing for a lightweight, ergonomic operation. These guns feature a curved extension, ideal for delivering a powerful stream of air in hard to reach areas, like clearing debris from drilled holes. All of the nozzles used with these units are either 316ss construction for durable, corrosion resistance or PEEK plastic for non-marring applications. The air inlet is 1/4 FNPT and there is a convenient hanger available for safe storage.

 

 

 

Our NEW VariBlast Compact Safety Air Guns are ideal for light to medium duty processes, featuring a variable flow trigger to achieve different force levels ranging from 2.0 ounces up to 1 pound, depending on the nozzle. The body is cast aluminum and there are (2) 1/4 FNPT air inlets available, 1 on the bottom and 1 on the back of the gun, as well as a storage hanger, for easy installation. Nozzles are available in zinc aluminum alloy, 303ss, 316ss and PEEK plastic. These guns are available with aluminum extensions from 6″ up to 72″.

 

 

The Soft Grip Safety Air Guns are commonly used in long-term use applications as they feature a comfortable grip and long trigger which helps to reduce hand and finger fatigue. The cast aluminum construction is well suited for more rugged environments and again, features a hanger hook. These guns can be fitted with aluminum, stainless steel or PEEK plastic to meet the demands of a variety of applications and are available with 6″ – 72″ aluminum extensions for extra reach or Flexible Stay Set Hoses , allowing the user to aim the airflow to a specific target area. The air inlets for these guns are going to be 1/4 FNPT.

 

 

 

EXAIR’s Heavy Duty Safety Air Guns deliver higher force and flows than other air guns, as these units feature a 3/8 FNPT air inlet, which maximizes the compressed air flow to the engineered Super Air Nozzle. Like the Soft Grip, the durable cast aluminum body is designed for use in tough industrial processes, and the ergonomic and comfortable trigger are ideal for hours of use. Aluminum extension are available, again in lengths from 6″ up to 72″, but feature a larger diameter for optimal flow and superior durability.

 

The Precision, VariBlast, Soft Grip and Heavy Duty Safety Air Guns are ALL available with an optional, polycarbonate Chip Shield to protect personnel from flying chips and debris, further meeting OSHA Standard 1910.242(b) for the safe use of compressed air.

 

Lastly we offer our Super Blast Safety Air Guns. The Super Blast Safety Air Guns are ideal for wide area blowoff, cooling or drying a part, as well as long distances. They feature a comfortable foam grip and spring loaded valve that will shut off the airflow if the gun is dropped. These units use our larger Super Air Nozzles and Super Air Nozzle Clusters, providing forces levels from 3.2 lbs. up to 23 lbs. Depending on which nozzle is fitted on the assembly, air inlets will range from 3/8 FNPT up to 1-1/4 FNPT. Aluminum extensions are available in 36″ or 72″ lengths.

 

 

For help selecting the best product to fit your particular application, please contact one of our application engineers for assistance.

Justin Nicholl
Application Engineer
justinnicholl@exair.com
@EXAIR_JN

 

EXAIR Accessories – We’ve Got you Covered

When you work with us here at EXAIR, we strive to have all the ancillary items that you might need to make your installation a success, without having to find components at the last minute or perhaps using the wrong sized components. Each specific product line such as Super Air Knives or Line Vac air operated conveyors have specific accessories such as mounting brackets or plumbing kits which EXAIR has made to simplify the installation of those particular products. We also carry generalized accessories which work across all of the product lines so you do not have to use multiple vendors or purchase orders.

Silencing Mufflers – Per OSHA Standard 1910.95(a), a worker must not be exposed to sounds levels above 90 dBA for any eight hour shift of a 40 hour work week.  EXAIR offers several types of mufflers including – Reclassifying, Sintered Bronze, Straight-Through and Heavy Duty.  For reducing the noise associated with an EXAIR E-Vac Generator, Vortex Tube, Cabinet Cooler System, or the exhaust air from cylinders, valves and other air powered equipment, we’ve got a muffler that will help to keep the noise level at an acceptable level.

Mufflers

Solenoid and Manual Valves – The easiest way to reduce compressed air usage and save on operating expense is to turn off the compressed air to a device when it isn’t needed. EXAIR carries a wide assortment of solenoid valves, with offerings in the NEMA 4/4X classification, and supply voltages of 24VDC, 120VAC, and 240VAC.  We also have manual ball valves from 1/4 NPT to 1-1/4 NPT and a foot operated valve, with 1/4 NPT connections.

Valves

Swivel Fittings, Stay Set Hoses and Magnetic Bases – To provide a great degree of flexibility for positioning an EXAIR Super Air Nozzle, Air Jets or Air Amplifiers, EXAIR offers several items.  The Swivel Fittings have 25 degree of movement from the center axis, providing a total of 50 degree of adjustability.  The position is locked in place and holds until adjustment is needed. For applications where frequent re-positioning of the air device is required, the Stay Set Hoses are ideal.  Simply mount the hose close to the application, bend it to the shape preferred, and because the hose has “memory”, it will not creep or bend.  Lastly, the Magnetic Bases are another option for flexible, movable installations.  The base has a on/off valve, and a powerful magnet to hold in any vertical or horizontal mounting arrangement.

Swivels, StaySets,MagBases2

 

Hoses – EXAIR can provide hoses for your application.  For the Line Vac air operated conveyor applications, we offer conveyance hose – a durable, clear reinforced PVC hose, in diameters of 3/8″ to 3″ ID, and lengths up to 50′. On the compressed air side, we can provide 12′ Coiled Hoses with 1/8, 1/4, and 3/8 NPT connections, and also 3/8″ and 1/2″ ID hose in lengths to 50′.

Hoses

Filter Separators, Oil Removal Filters and Pressure Regulators – Perhaps the most important accessories for use on a compressed air device are filters and regulators. Filtering the compressed air of dirt, debris, moisture and oil will help to prevent build up inside the EXAIR products, leading to longer service life, and less time spent cleaning, while providing optimum performance. Regulating the air pressure allows for tuning of the performance, using the proper amount of compressed air to obtain satisfactory results.

Filter and Regualtors

If you have questions regarding accessories for use with 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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Finding The Right Solution Through Dedicated Engineering Support

crate

Plastic crate in need of blow off after washing

An OEM of crate washing equipment in Lebanon recently contacted me about an application on one of their conveyors.  The conveyor carries a plastic crate out of a washer and excess water on the crate was presenting a problem in the application.  In order for the crate to move on to the next step in the machine, a blow off solution was needed, but the exit rate from the washer was inconsistent.  In a given minute there could be 5 crates exit the washer, or there could be 20.  So, the ideal solution needed to have intermittent control options with instantaneous on/off functionality.

We immediately began discussing Super Air Knives, not only because we show plastic crate blow off in one of our many videos, but also because these units are instant on/off with full compatibility with a flow control device.  Utilizing a flow controller, such as the EXAIR Electronic Flow Controller or PLC device, will allow for precise control of the blow off solution, limiting compressed air use to a minimum.

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The first blow off system design

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This layout utilizes Air Knives on each side of the blow off as well as the top

After discussing application details we came to the design shown above, using one 24” Air Knife on the top of the crate and two 9” Air Knives on the sides.  However, this OEM had purchased numerous 2” Flat Stainless Steel Super Air Nozzles in the past (model 1122SS) and had a number available on site.  Modifying the system to utilize the nozzles already on-site, we came to this design:

system-layout

The finalized layout for this blow off system. Click for a larger view.

This layout utilizes (1) 24” Stainless Steel Super Air Knife on the top of the crate and (2) sets of (3) 2” Flat Stainless Steel Super Air Nozzles on the sides, held in place with EXAIR Stay Set HosesNotice the independent pressure regulators for the nozzles and the knife.  This is to allow the customer to balance the air flows, because the 2” flat nozzles will create a higher force than the Air Knife when operating at the same pressure.

In this application we were able to help a returning OEM solve their problem with the right mix of needed products.  Exploring the problem and discussing numerous viable solutions led to the best fit for the application and customer.  That’s precisely why EXAIR Application Engineers are available for any application call or question.  If you’d like to explore an EXAIR solution we’ll be happy to help.

Lee Evans
Application Engineer
LeeEvans@EXAIR.com
@EXAIR_LE

 

“(Stay) Set It And Forget It”

The Stay Set Hose is a popular, and practical, accessory for use with many of our blow-off products. Thread one end onto a compressed air supply connection, thread a Super Air Nozzle (or maybe even a small Air Amplifier or short Air Knife) onto the other end, and you’ve got an easily repositionable blow off…which will reliably hold its position.

That last part was of considerable importance to a caller I had the pleasure of assisting recently. Some of the CNC machines in their shop were fitted with flexible plastic tubing (commonly used for coolant & cutting fluid,) supplied with compressed air to blow off chips & debris from the tooling as the parts were being machined. They use our Super Air Knives in other blow off processes (where they used to use costly & loud open blow off devices,) and wanted to see if engineered products might reduce their compressed air consumption & noise levels in the machine shop too. (spoiler alert: Yes, they can.)

Thing is, they really needed the flexibility of the modular hose, but it’s not rated for the pressure supply required for a Super Air Nozzle. This is what makes our engineered products so efficient; they use the Coanda effect to amplify the compressed airflow..and they use the supply pressure to do that. So they can’t install a Super Air Nozzle on what they have now.

Enter the Stay Set Hoses: They’ll bend to direct the nozzles’ air flow right where you need it, and they’ll keep it there until you bend it again. Which (back to what’s most important to this caller) is exactly what they needed. With our efficient & quiet Super Air Nozzles, they’re saving compressed air and improving the conditions of their work environment. With the Stay Set Hoses, they’re able to quickly & easily rig the air flow before running a job, knowing they won’t have to worry about it until the job’s done.

EXAIR Stay Set Hoses hold their position as long as you need them to. All day, every day.

EXAIR Stay Set Hoses hold their position as long as you need them to. All day, every day.

“Set it and forget about it” is a benefit you can realize from many EXAIR Intelligent Compressed Air Products. If you’d like to find out more, give me a call.

Russ Bowman
Application Engineer
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High Power Super Air Nozzles Provide Forceful Air Flow

When considering the application of a compressed air product, we have an awful lot of discussions with callers about the amount of force generated.  Now, if that’s all you want, you’re not going to get more force from compressed air flow from anything but an open ended blow off.  There are problems inherent with this: it’s unsafe, it’s loud, and it’s a horribly inefficient way to use compressed air.  By the time they’ve called EXAIR, they probably know this, but the main concern is still the same: solving their application.

Good news is, you don’t need a lot of FORCE for most blow off situations.  Think about it…how much do sawdust, machining chips, coolant droplets, etc., weigh, anyway?  All you really need to do is optimize the air flow, which is EXACTLY what EXAIR Intelligent Compressed Air Products are engineered & designed for.  So, we talk a LOT about how often a high amount of force isn’t needed in compressed air blowing applications.

Then…I got a call from a user who needed force.  They had an air knife installed to blow parts out of a mold, as the halves separated.  There’s a rectangular array of parts in a multi-cavity mold, and the air knife just wasn’t getting them all out, all the time.

The air knife, was, of course, originally chosen for its efficiency, but it just wasn’t delivering the needed “punch.” They even tried other shim thicknesses (which increases the outlet air gap) to increase the flow & force delivered, and that helped a little, but wasn’t 100% effective.

The solution came in the form of an array of HP1125-9212 2″ High Power Flat Super Air Nozzles, supplied with 12″ Stay Set Hoses.  They’re able to mount these closer to the mold than the air knife, and the ability for each nozzle to operate independently meant they were able to be aimed precisely where they can do the most good.  They are now able to evacuate the molds the first time, every time.

Sometimes, you DO need the high force of the HP1125 2″ High Power Flat Super Air Nozzle

If you have questions about how to get the most out of your compressed air use, give me a call.

Russ Bowman
Application Engineer
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This Is A Hold Up

To clarify, right off the bat:

  1. Nobody is getting robbed here.
  2. Nothing is being delayed, especially a shipment from EXAIR. If it’s in the catalog, it ships on time, 99.97% of the time, for 17 years & running. This has nothing to do with this blog; I just never get tired of bragging about that.

Today I wanted to write about installing EXAIR products, but hey, it’s Friday, so I thought I’d start with something that would get your attention. If you’re still reading, I guess it worked.

We talk to users…and potential users…all the time about how to install an Air Knife, Air Nozzle, Vortex Tube, etc. And the answer is…it depends. But, it’s almost always quick and easy.

Consider the EXAIR Super Air Knife. There are a few ways to hold one in place:
*There are 1/4″-20 tapped holes, every 2″ along the bottom. These can be used to bolt it to just about anything you want to bolt it to.
*The 1/4″-20 cap screws can also be replaced with fasteners of sufficient length to allow use of a bracket. In fact, this is what we use for…
*The Universal Air Knife Mounting System – it’s a quick and convenient way to support an Air Knife. It’s especially beneficial to precisely position the Super Air Knife for optimum performance.
*Last but not least, Super Air Knives 24″ and longer need to be plumbed to both ends for proper performance. If you hard pipe it in, it’ll be as well supported as the piping.

EXAIR Super Air Knives are easy to install, no matter what the length, or application.

EXAIR Super Air Knives are easy to install, no matter what the length, or application.

Then there’s our Super Air Nozzles:
*With standard, common NPT threads, these are easy to install anywhere you have an existing air line. You can get NPT adapters for darn near any threaded connection, off the shelf, from a friendly local air compressor or hydraulic/pneumatics shop.
*We’ve got Stay Set Hoses in lengths from 6″ to 36″ – these let you reposition the Air Nozzle at will. It’ll “stay set” until you bend it again.
*Our Swivel Fittings can be used with any of our Super Air Nozzles, as well as our Air Amplifiers, for sturdy, yet easily repositionable, installation.

EXAIR Swivel Fittings or Stay Set Hoses - no better way to optimize your air flow than aiming it where it needs to be!

EXAIR Swivel Fittings or Stay Set Hoses – no better way to optimize your air flow than aiming it where it needs to be!

We’re even committed to making our air preparation accessories easy to install…our Automatic Drain Filter Separators, Oil Removal Filters, and Pressure Regulators (up to 1/2 NPT) can be coupled via a modular block assembly that eliminates a threaded connection between them, and is ideal for close quarters.

EXAIR Model 9027 Oil Removal Filter, installed between Model 9004 Filter Separator and 9008 Pressure Regulator, using our Modular Coupling Kits

EXAIR Model 9027 Oil Removal Filter, installed between Model 9004 Filter Separator and 9008 Pressure Regulator, using our Modular Coupling Kits

That’s not even mentioning the products that are ready to install, right out of the box with a convenient Magnetic Base:

From left to right: EXAIR Mini Coolers, Cold Guns, and Adjustable Spot Coolers come with Magnetic Bases for instant installation.

From left to right: EXAIR Mini Coolers, Cold Guns, and Adjustable Spot Coolers come with Magnetic Bases for instant installation.

If you’d like to find out more about how easy it is to install an EXAIR Compressed Air Product, give me a call.

Russ Bowman
Application Engineer
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Flexible Stay Set Hoses

Adjustability and flexibility have been common themes for some of my recent blog posts. The EXAIR Flexible Stay Set Hoses certainly exhibit those same characteristics and more. For applications where frequent re-positioning of the air product, whether it be a Super Air Nozzle or Jet, or small Super Air Knife, the Flexible Stay Set Hoses are ideal.  Simply mount the hose near the area of application, and bend and shape it to deliver the air flow precisely as needed.

stay-set-hoses

Flexible Stay Set Hoses

The hose was designed and manufactured to have “memory”, and it will not creep or bend. It will maintain the positioning and directional aim of the air flow until it is reshaped to a new position.  The materials of construction allow it to withstand temperatures up to 158°F (70°F.)

The Flexible Stay Set Hoses are offered in 5 different lengths – 6″, 12″, 18″, 24″, 30″, and 36″ and with 2 different end configurations – 1/4 male NPT x 1/8 female NPT and 1/4 male NPT on both ends, providing many options to match the needs of the application.

The Magnetic Base works in conjunction with the Stay Set Hoses, as they also allow a flexible location for positioning the hose.

stay-set-hose-application-photo

Magnetic Base, 24″ Stay Set Hose and 2″ Flat Super Air Nozzle Provide Blowoff for a Machining Operation

For additional information on the Flexible Stay Set Hoses including the proper way to install and set the position for long lasting service, check out the Video Blog.

To explore how the Stay Set Hose could be of use in your facility, feel free to contact EXAIR and one our  Application Engineers can help you determine which solution can help you.

Brian Bergmann
Application Engineer

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