EXAIR’s Line Vacs are the ideal low-cost solution for bulk material transfer. Available with NPT threaded connections, EXAIR’s Threaded Line Vacs allow you to convert ordinary pipe into a powerful conveying system for parts, scrap, trim, and other bulk materials. With performance identical to that of the Standard Line Vac, the Threaded Line Vac is available in sizes ranging from as small as 3/8 NPT and up to 3” NPT there’s a suitable Line Vac for most standard sized NPT pipe common an any industrial facility.
The Threaded Line Vac is available in a range of different materials: Aluminum, Type 303 Stainless Steel, Type 316 Stainless Steel, and as a Heavy Duty conveyor constructed of a proprietary hardened alloy steel for use in abrasive applications. Where most materials would wear out over time, the Heavy Duty Line Vac is the ideal solution for heavy and abrasive materials. In addition to being abrasive resistant, it’s also more powerful and suitable for longer vertical and horizontal transfer distances.
Each style of Threaded Line Vac is also available as a High Temperature option. By replacing the traditional o-rings with graphite seals, we’re able to provide a solution capable of withstanding temperatures up to 900°F!!!
The conveyance rate through the Line Vac is infinitely adjustable by regulating the air pressure supplied to it. At lower pressures, the conveyance rate (and air consumption) will decrease. At higher pressures, the conveyance rate will increase. If you have a Threaded Line Vac with the standard performance but need just a little bit more, the option also exists for a High Power unit that would match the performance of the similarly sized Heavy Duty. This can be ordered from the factory with an “HP” prefix, or modified yourself. Check out our video to see just how simple it is to get more out of your Threaded Line Vac.
With all sizes and materials on the shelf and in stock, we’re able to get a solution out to you quickly. We’ll ship out the very same day for stock orders received by 3:00 ET. Backed by our Unconditional 30 Day Guarantee, you’re able to make sure it is the right solution for you before committing to keep it. If you have an application that could be better served with an in-line pneumatic conveyor, give us a call. We’ll be happy to help you determine the most suitable size for the application.
Over the weekend I was working on a car in my driveway and I needed a large volume of air at the far end of the car to try and unplug a clogged sunroof drain line. Rather than trying to move the car while it was mostly taken apart, I just hooked up another air line extension and started to go to the drain. Even knowing what I know as an EXAIR Application Engineer about lengths of tubing, air restriction, and fitting restrictions, I went ahead with the quick and easy “fix”.
I grabbed another 30′ – 3/8″ i.d. air line with 1/4″ quick disconnects (see why this is wrong with this blog) on both end, rather than getting out the 50′ long 1/2″ i.d. air line that I have with proper fittings that then reduce down to a 1/4″NPT at the end to tie into most of my air tools. By doing so I ended up hooking up a Safety Air Gun which then gave a very light puff of air into the tube and the clog in the line went nowhere. As a matter of fact, it was almost like it laughed because the tubing vibrated as if the clog said, “Pfft I am going nowhere.”
I then, stepped back and evaluated what I had done in a rush to try and get a job done rather than taking the extra five minutes to get the proper air line to do the job. I then spent 10 minutes putting that hose up and getting out the correct hose. Then, with a whoosh and a thud the clog was launched into my yard from the clogged drain port and I finished the repairs.
If only I had watched Russ Bowman’s spectacular video on Proper Compressed Air Supply Plumbing the day before. Rather than wasting time with the quick “fix” that cost me more time and didn’t fix anything I should have taken a little more time up front to verify I had properly sized my lines for the job at hand.
If you would like to discuss compressed air plumbing, appropriate line sizes, or insufficient flow on your compressed air system, please contact an EXAIR Application Engineer.
Airborne particles surround us everywhere. In a general work environment, nearly four million particles per cubic foot is floating around us at any given time. When a compressor compresses this air, the concentration increases substantially. So, compressed air is not only expensive to make, but very dirty. As the air exits your air compressor and travels into your pneumatic system, there is so much contamination that the International Standard Organization, ISO, created an Air Quality chart with Purity Classes.
This chart is easy to follow and can be found in the ISO8573-1 standard for Air Quality. It is used to select a cleanliness level for your compressed air system. The contamination is categorized into three areas; Particles, Water, and Oil (reference above). A Class is associated with a number for each category ranging from 0 (most stringent) to 9 (most relaxed). As an example, an Air Quality value of ISO8573-1:2010 [1.2.4] has a Class 1 for Particles, Class 2 for Water, and Class 4 for Oil. These Class values will show the maximum value in each category.
To define the categories in more detail, I will separate the three to discuss the origins and solutions.
Particles: For solid particles, this part comes from many different areas. The surrounding ambient air that is being drawn into the air compressor is filtered; but the intake filter will only remove large diameter particles. The smaller diameter particles will go through the filter and into the compressed air system. Another part is rust particles that occur from steel air pipes and receiver tanks. Over time, rust will flake off and create particles that can affect pneumatic equipment. Other particles can come from components inside the air compressor, valves, etc., that wear and breakdown. In the ISO column for Particles, it is separated into three different micron ranges and concentrations. The removal of particles from the compressed air is done by traps and compressed air filters. EXAIR offers two types; Filter Separators with 5-micron filtration and Oil Removal Filters with 0.03-micron filtration. There are other types of filtration systems depending on your ISO requirement.
Water: Humidity is a natural occurrence as water vapor in the surrounding air. It can be measured as a dew point temperature. This is the temperature at which water will condense and make rain. Inside an air compressor, the air is ‘squeezed”, and the amount of space for water vapor is reduced. So, it will condense into liquid form as “rain” inside the pipes. Air that comes out from an air compressor will always be saturated with water. To remove liquid water, a mechanical device can be used. Inside a Filter Separator, a centrifugal separator will spin the air and remove the liquid water. To remove water vapor, a compressed air dryer is required like a refrigerant, desiccant, deliquescent, or membrane type. Each type will have a dew point range that they can reach. As an example, a refrigerant type will reduce the dew point near 37 oF (3 oC). That means that water will not condense until the temperature reaches below 37 oF (3 oC).
Oil: This category can be found as a liquid, aerosol or vapor, and it includes more than just oil. It contains small hydrocarbons, CO, CO2, SO2, and NOX. Oil mainly comes from inside an oil-flooded air compressor. As the air passes through the compressor, it will pick up remnants of oil aerosols and carry it downstream. With high temperatures inside the air compressor, some of the oil will vaporize. Even with oil-less type air compressors, carbon vapor can still be an issue. Small hydrocarbons can come through the air intake and condense inside the system like water vapor above. To remove the liquid and aerosol type of oil, Oil Removal Filters can be used. They are designed to “coalesce” the small particles into larger particles for gravity to remove. Oil vapor requires an activated carbon to remove. These types of filter units will adsorb the vapor. This helps to remove odors as well as dangerous chemical vapors that may be in the compressed air line.
There are a variety of pneumatic systems that use the ISO8573-1 standard. This will include breathing air operations, food and beverage, pharmaceutical, and the electronic industries. If you need stringent requirement for your compressed air system, the Air Quality standard should be used by referring to the Class numbers above. This helps to dictate the types of filtration and air dryers that should be used within your pneumatic system. If you have any questions about your compressed air system, an Application Engineer at EXAIR can help.
I recently worked on a unique application for EXAIR’sBack Blow Nozzle. Generally, these products are used to clean out chips, debris, and coolant from the ID of pipes or tubes. With (3) different sizes available to clean out IDs ranging from ¼”-16” it’s the ideal solution for cleaning out pipes where blowing forward into the pipe won’t work. They’re also available on the end of a Safety Air Gun with extensions up to 72” long, allowing you to get to hard to reach areas.
This particular application, however, was slightly different. The customer has a large machine that rotates a large drum to dry the tobacco, much like a standard clothes dryer. Inside of this drum is a “spray boom” with an angled top designed to prevent the tobacco from settling and sticking in large quantities. At the end of this “spray boom” are Atomizing Nozzles used to apply a cleaning solution after each drying process is completed at the end of the shift. Unfortunately, the angled design didn’t work quite as well as they’d intended.
The customer needed a solution that could periodically clean off the boom while the drying was in operation. It wasn’t reasonable to do this at the end of the drying process once the majority of material had passed through. The accumulated tobacco on the boom was perfectly usable product and anything stuck after the cleaning operation would have to be thrown out as waste. In order to clean the boom and allow the stuck tobacco to remain as usable product, we needed an automated solution.
The customer installed (4) of the 1006SS Back Blow Nozzles situated around the boom to remove any stuck-on product during the drying process. The results spoke for themselves, at 90 PSIG it removed a 14” wide radius of material from the surface. By implementing the Back Blow Nozzle they were able to reduce waste and eliminate a daily 1-hour long cleaning process to remove stuck on material from the boom.
Just because it’s an outside-the-box application for one of our products, doesn’t mean it won’t work!! With EXAIR’s Unconditional 30-Day Guarantee, you can test any of our stock products out before committing to keep them. Reach out to an Application Engineer today if you have a unique application you’d like to discuss!
I recently had the pleasure of talking with a caller from a consulting firm that specializes in improved ergonomics. They work with clients on everything from preventing carpal tunnel syndrome through the use of things like gel-filled mouse pads for office personnel, to preventing injuries in the workplace due to repetitive strain, heavy lifting, and other physically demanding tasks. They called about an operation where workers used buckets to move 150 pounds of dense pellets from a large container into a smaller vessel for weight load testing. After the test, they move the pellets back into the container, where they stay until the next test is to be run. Then they do it again.
This, of course, was a great fit for a 2″ Heavy Duty Line Vac and a 10ft length of Conveyance Hose. They simply move the suction & discharge hoses from, and to, the storage container & test vessel. Risk of injury is greatly reduced, as the whole Line Vac conveyance system is less than half the weight of one bucket of the material.
This is just the latest success story in the long history of EXAIR Air Operated Conveyors. They’re on the shelf in a range of sizes and materials of construction to meet most any need. If you don’t see what you’re looking for, though, call me and we can discuss your needs.
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Recently I was working with a company who grows plants using a method I’ve never heard of before, aeroponics. See I grew up on a farm, so I’m used to the old fashion way to grow crops! Dirt, water and sunlight, or as my grandpa would call them “The three pillars of life as we know it”.
So I had to do some research into aeroponics so I could understand if we could help him. It turns out aeroponics does not use a dirt medium, they relay on a very fine mist to provide the nutrients the plant needs to grow. But its very important that the mist have droplet sizes of less than 50 microns, or the roots will not be able to absorb it.
We ended up going with the AW8010SS Internal mix wide angle round pattern. And after playing with them the customer ran the nozzles at 5 PSIG air pressure and 10 PSI of liquid pressure. running the nozzle every 10-15 mins kept the room at the perfect humidity for the plants they are growing.
They are planning to install up to 20 of the AW8010SS Internal mix wide angle round pattern in each section of their facility once they build their building!
To discuss your application and how an EXAIR Intelligent Compressed Air Product can help your process and save you money, feel free to contact EXAIR and myself or one of our Application Engineers can help you determine the best solution.
Safety should always be a serious concern within industrial environments. Walk through any production facility and you should see all kinds of steps taken to give a safe workplace to the operators, contractors, and other team members. Whether this is through a sign showing PPE required to enter an area, an emergency exit sign, a safe walkway, or machine guards. Safety has become a standard that should never be lowered and there is good reason for that.
EXAIR designs all of our products to be safe and they meet or exceed OSHA standards that are directed toward compressed air safety. The first is to ensure that an operator or maintenance worker will not be injured through air impinging their skin should they come into contact with an EXAIR product. This OSHA standard is 29 CFR1910.242(b) claiming that all point of use compressed air products must be regulated to have less than 30 psig of dead end pressure. This directive is critical for worker safety and the way many blowoffs skirt by is to cross drill holes in the end of the blowoff.
Cross drilled holes may satisfy the dead end pressure standard but it does not address OSHA’s next important compressed air standard about noise exposure, OSHA standard 29CFR1910.95(a). The allowable noise level standard combined with 30 psig dead end pressure will render many home made or retail nozzles near useless because few, if any, meet both standards. Again, EXAIR has engineered and designed our Super Air Nozzles to permit 80 psig inlet pressure and still meet or exceed both of these OSHA standards so that the work can still be done by the operators while remaining safe and retaining their hearing.
For a better explanation and demonstration of how our nozzles meet these standards please see the video below.
While I use nozzles and cross drilled pipes as examples within this blog these safety features are designed into every product that EXAIR offers. This is due to the fact that OSHA, NIOSH, and the CDC do not delineate between a blow gun, blow off within a machine, or even a Cabinet Cooler System. If the device is powered by compressed air then the two key OSHA standard are in effect due to the inherit dangers of compressed air.
I encourage you now to walk through your facility and try to listen or spot compressed air points of use within your facility. Then, I ask you to call, chat, e-mail, or tweet an Application Engineer here at EXAIR and let us help you determine the most efficient and safest product to get the work done.