EXAIR’s Line Vacs are an ideal solution for bulk conveying over long distances. With just a small amount of compressed air, the Line Vac generates vacuum on one end and high output flows on the other. The conveyance rate is easily adjustable by regulating the pressure supplied to the Line Vac. At higher input pressures the Line Vac will move more material, at lesser pressures the conveyance rate is also reduced.
The Heavy Duty Line Vac looks similar to the standard Line Vac, but packs a more powerful punch. Performance has been boosted with larger holes in the generator. This makes the Heavy Duty Line Vac ideal for heavier materials that must be conveyed over longer vertical and horizontal distances. Standard Line Vacs can also be drilled out to match the performance of a Heavy Duty. In addition to being a more powerful conveying system, the Heavy Duty Line Vac is also constructed of our proprietary hardened alloy steel blend. This material provides exceptionally strong abrasion resistance for applications requiring the transfer of materials such as crushed glass, steel shot, or dry sand.
Where a material such as aluminum or even stainless steel would quickly wear out, the Heavy Duty Line Vac will not. As with all of our stock products, the Heavy Duty Line Vac comes with EXAIR’s Built-To-Last 5 year warranty. We’ve tested these units here ourselves with a variety of different common abrasive materials. Check out the video below to see for yourself just how durable these Line Vacs are!
Just as the Standard Line Vacs, the Heavy Duty Line Vac can come with either smooth of NPT threaded connections to turn ordinary pipe into a powerful conveying system. With sizes from ¾ NPT up to 3” NPT, there’s a size from stock available suitable for your application. If you’re looking to move abrasive materials from one point to another in your shop, look no further than EXAIR’s Heavy Duty Line Vac. Reach out to an EXAIR Application Engineer for help in determining the most suitable sized Line Vac for your requirement.
Do you have operators climbing steps to dump bags of material into hoppers? Do you need a faster way to remove scrap from a process? Do you have budgetary constraints in trying to move material from punt A to point B? If you answered yes to any of these, EXAIR may have a simple solution. We manufacture an air-operated conveyor that does not have any moving parts, has a very compact design, and generates a high throughput capacity. They can attach easily to standard hoses, pipes, or sanitary flanges to convert your piping system into a powerful conveying system. EXAIR manufactures these air-operated conveyors and trademarks them as Line Vacs™.
EXAIR Line Vacs use a small amount of compressed air to generate a powerful vacuum by a Venturi effect. The unique design of the generator creates a high velocity of air to create a low pressure on one side and a powerful thrust on the other. The Line Vac can pick up and move solid material from light and fluffy batting to steel components. They can transfer product horizontally up to 100 feet (30 meters) away and vertically up to 20 feet (6 meters) high. You can watch a video on the operation of a Line Vac HERE. Compared to other vacuum or conveying systems, the EXAIR Line Vacs are very quiet, rugged, and powerful. EXAIR makes a variety of Line Vacs in different sizes, styles, and materials to best fit your application.
The standard Line Vac is the most versatile product in this family. EXAIR stocks a wide range of sizes, materials, and styles for targeting the best solution for moving material. We have two types of connections, slip-on ends for hose connections and threaded ends for pipe connection. EXAIR can swap the connections with a slip-on hose on one end with a threaded connection on the other. They range in diameters from 3/8” (10mm) up to 5” (127mm). We manufacture the Line Vacs in aluminum, 303SS, and 316SS; but don’t let that deter you if your need them manufactures in any other type of material. We have high temperature models that can withstand temperatures up to 900 deg. F (482 deg. C). These Line Vacs work great in applications for loading plastic pellets in hoppers, discarding scrap pieces, trim removal, and transferring material. If an operator has to carry a container of dry material and climb stairs, a Line Vac could be a much better alternative.
The Heavy Duty Line Vacs are made from a hardened alloy steel for abrasion resistance. The generators inside these Line Vacs are more powerful than the standard models; so, that they can convey heavier materials at higher conveyance rates. They can reach rates as high as 40 lbs./min. (18.2Kg/min) of material. With the hardened alloy construction, they are great for sand blasting applications, ceramic, glass and steel shot. They are manufactured with inlet and outlet connections for ship-on hoses or threaded pipes. EXAIR stocks the Heavy Duty Line Vacs in the range from ¾” (19mm) to 3” (76mm) for both hose and NPT connections. These Line Vacs are our most powerful design with great wear resistance.
On the other end of the Line-Vac spectrum, EXAIR also created the Light Duty Line Vac. They use much less compressed air than the other Line Vacs which work great for moving lightweight materials over short distances. They can also be used for removing smoke and fumes from a work area. The Light Duty Line Vac ranges from ¾” (19mm) up to 6” (152mm) diameter for slip-on hose connections. This two-piece design provides an effective way of moving material at a lower cost. It can be used in applications like hopper loading, fiber tensioning, filling operations, and smoke removal. For moving material within a short distance, the Light Duty Line Vac could be the proper product to use.
Our latest engineering design within the Line Vac family is the Sanitary Flange Line Vacs. They can fit within sanitary piping systems to convert pipes into a useful conveyor for bulk material and waste removal. They use an ISO2852 flange for easy disassembly and cleaning to reduce bacterial entrapment. They ae made from 316 stainless steel material for superior corrosion resistance. They come in four different sizes to fit the sanitary flanges from 1-½” up to a 3” flange. For sensitive applications where cleanliness is a major requirement, the Sanitary Flange Line Vac are manufactured for these conditions.
With all of the EXAIR Line Vacs above, they can be sold as kits. A kit will include a filter, regulator and a bracket. (A bracket is not sold with the Light Duty Line Vac kits.) The filter will help keep the Line Vac clean as well as the product that it is conveying. The regulator is a great tool to vary the conveyance rates for better control. The bracket helps to mount the Line Vac to a sturdy base for support. A useful accessory to conveniently hide the compact Line Vac for ease of use and operation.
If you need to convey solid materials in a quick and easy way, an EXAIR Line Vac could be a solution for you. We have them in a variety of formats to match your application. They are compact, quiet, and simple to use without any moving parts. As compared to a conveying system which is bulky and rigid, the Line Vacs are flexible and inexpensive. Ergonomically, they can save the back-wrenching labor of picking up bags, climbing stairs, and dumping material into hoppers. If you want to know if the EXAIR Line Vac could work for you, please fill out the Line Vac Data Sheet (click HERE). An Application Engineer at EXAIR will help to recommend the best unit for you.
The Heavy Duty Line Vac is EXAIR’s most powerful air conveyor. While the appearance is similar to our other Line Vacs the Heavy Duty Line Vac it is constructed from a proprietary hardened alloy for greater wear resistance in highly abrasive applications, it is also designed to convey heavier product over greater distances!
The performance of the Heavy Duty Line Vac’s is nothing short of amazing! With vacuum ratings between -144 to -20 inches of water column, it is more than likely there is a Heavy Duty Line Vac model that will suit your application.
Models range from 3/4″ OD to 3″ OD either in smooth bore or NPT threaded models for the ultimate in versatility. The table below shows the different Heavy Duty Line Vac Models and their respective recommended kit, which includes a pressure regulator for fine tuning performance, filter separator to keep the compressed air supply clean and a mounting bracket.
Because EXAIR designs and manufactures our own products, if you need something a little different we can probably help. This is true throughout our entire product line, the following examples are of our Line Vac products.
Do you have an application that may not be best served by one of our stock Line Vac products? While we have quite a variety of both materials, sizes, and connection types sometimes a special application requires a special solution. For this reason, EXAIR manufactures special Line Vacs suited EXACTLY for the type of application or environment that it’ll be operating in.
This special Miniature Line Vac was manufactured with barb fittings and designed for a manufacturer of integrated circuit chips. It was used to remove microscopic debris during the chip making process. It’s small overall footprint makes it ideal for applications requiring tight mounting conditions. It has also been used by other manufacturers to vacuum liquid and chips from small drilled holes. While the Line Vac isn’t typically suitable for liquids, the higher vacuum level associated with the smaller Line Vacs makes it a possibility.
This next special Line Vac was used to convey fine powders or granulated materials from a hopper. While this is a pretty straight-forward application for a standard Line Vac, their material could sometimes be moist which would pack the tube and restrict the flow of material. The funnel-shaped design created a suction on the existing tube that permitted a continuous product flow.
This flanged Line Vac was used to retrofit existing machinery to remove acidic vapors resulting from surface etching of a silicon wafer. Where this would typically be a nice fit for a Stainless Steel Air Amplifier, the existing exhaust piping was lengthy with many bends that would have caused back pressure on any Air Amplifiers. In this case, they needed the high velocity airflow from the directed nozzles of the Line Vac to overcome this downstream resistance.
In addition to making Line Vacs in different shapes and sizes, we can also use special materials. In this instance, the special flanged Line Vac was manufactured out of PVDF (Polyvinylidene Flouride) due to its superior corrosive resistance. The Line Vac would be regularly exposed to a chloride wash that would corrode even stainless steel. It was also manufactured with special QF flanges to allow for easy assembly and removal of the conveying hoses for cleaning purposes.
As you can see the sky is the limit when it comes to potential styles of Line Vacs. Don’t think just because you don’t find something you need in the catalog that EXAIR can’t do it! We’ll create special manufactured products for just about anything that you can find in the catalog, not just the Line Vacs. Whether it’s custom-length Super Air Knives or special Air Amplifiers we can make it happen. Reach out to an Application Engineer today for help designing a solution, just for YOU!
The EXAIRLine Vac is a tried and true device for conveying parts, materials, and waste – with no moving parts. The list of successfully conveyed materials in the application database is far reaching – including plastic pellets, scrap/trim, chips, pills/tablets, shavings, sawdust and granules.
The Line Vacs can be used for more than conveying large amounts of material from A to B. Recently, one of our automation customers found an application for the Line Vac in the design and manufacture of a custom fill machine. The machine was commissioned to fill small, plastic cups. To move the cups from the material staging area to the filler processing area, (10) of the 2″ aluminum Line Vacs were used. Using a sensor to measure the stack height in each tube, the compressed air is triggered on/off to transfer a group of cups over to the filling area. See photo below-
Other types of applications that Line Vacs have been used for include pick and place, small space ventilation, fine powder dispersion and light vacuum generation. Another popular use is to integrate into a machining process for waste removal of chips, shavings, and waste removal.
The Line Vacs come in (3) types- Standard, Light Duty and Heavy Duty. Also, (3) different end connections are available including smooth bore, threaded, and the new sanitary flanged. Depending on the model type, materials of construction may include aluminum, type 303 and 316 stainless steels, and a hardened alloy. Special high temperature versions are available with temperature ratings up to 900°F (482°C.)
When it comes to conveying bulk materials like pellets, grains, powders, etc., you’ve got plenty of choices: Mechanical conveyor types, like bucket, auger, and cleated belt conveyors can move product as far as you want, and as quickly as you want…they can be made as long as you want, and as big & fast as you want. “Fast” as in conveyance rate, that is. Lead time, including engineering, design, fabrication, and installation, can be months.
Air operated conveyors are quite popular too, and the dense phase models can move a lot of material a great distance, and quickly. Like the mechanical types, they have a wide range of economy to scale…and the price tags to prove it. Medium- and dilute-phase pneumatic conveyors are less complicated in design, which brings us to the heart of today’s blog.
EXAIR Air Operated Conveyors, or Line Vacs, are the simplest of all: the Line Vac itself used compressed air to generate a “pull/push” to draw material into the suction, and propel it through the discharge. We have a variety of models to choose from, but our focus today will be the Heavy Duty Line Vac.
EXAIR Heavy Duty Line Vacs are the workhorse of our Air Operated Conveyors product line. Consider their advantages:
*Made of a proprietary hardened alloy, they offer superior abrasion resistance & durability. They’re ideal for shot blast and tumbling media…the very stuff that’s MADE to wear metal surfaces down…and it’s no problem for the Heavy Duty Line Vac.
*Heavy Duty also means higher power, which means higher suction heads (up to 2-1/2 times increase) and conveyance rates (up to 11 times greater.) Oh, and that blasting shot & tumbling media I mentioned? Standard dilute-phase conveyors may have trouble moving that at all.
*Like our Standard Line Vacs, the Heavy Duty models’ Kits come with a Mounting Bracket for ease of installation, an Automatic Drain Filter Separator to keep the air clean & dry, and a Pressure Regulator so you can ‘dial in’ the performance you need.
*Also like our Standard Line Vacs, the Heavy Duty models use common sized conveyance hose (3/4″ to 3″ ID) and are also available with male NPT threads (3/4″ to 3″ as well) if you want to hard pipe them.
If you’re looking for a simple, durable, and powerful conveyor system, look no further than the Heavy Duty Line Vac. Give me a call if you’d like to discuss your application and/or product selection.
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Today I worked with a customer that manufactures a wide variety of material handling equipment including coil unwinders. The engineer was calling because there was a special project for a coil unwinder that could handle a waste piece of paper trim. As the metal coil is being unwound for delivery to a metal processing machine, the protective paper is pulled off and was to be collected into a waste receptacle for easy handling and disposal/recycling. The engineer was hoping to replicate an existing system that used a hybrid blower system, with an extra compressed air nozzle, but in a simpler form.
We proposed the use of the 4″ Light Duty Line Vac– shown below.The Light Duty Line Vacs offer an effective way to convey small and light materials a short distance. Like the standard Line Vac, the Light Duty Line Vac converts an ordinary hose or tube into a conveyor for scrap, trim, and bulk materials.
When the process involves moving low volumes of materials over short distances, the Light Duty Line Vac is a great choice. The simplified (2) piece design offers effective conveying at a lower cost. As an added plus, the compressed air consumption is lowered to levels commensurate with handling the lighter materials, at lower volumes and short distances. Using a pressure regulator to control the supply air allows for tuning of the transfer rate, and keeps air usage to the minimum amount needed.
The Light Duty Line Vacs are available with inlet/outlet diameters from 3/4″ up to 6″. With no moving parts, maintenance free operation is assured.
For other larger materials, higher transfer rates, corrosive environments, or abrasive materials, take a look at the other EXAIR Line Vac offerings including the aluminum, 303 and 316 stainless standard Line Vacs, the aluminum, 303 and 316 stainless steel Threaded Line Vacs, high temperature models, standard and threaded Heavy Duty Line Vacs, and lastly the new Sanitary Flanged 316 stainless steel type.
If you would like to talk about Light Duty Line Vacs or any of the EXAIR Intelligent Compressed Air® Products, feel free to contact EXAIR and myself or one of our Application Engineers can help you determine the best solution.