Generally, when we’re talking about a Line Vac application it involves the transfer of bulk materials from one place to another. Many applications involve replacing what we call a “bucket and ladder” operation. An operator must fill a bucket or container with the material, climb up a ladder, and then deposit it into a hopper. While this is a great example of one way to use them, Line Vacs can also be used in a variety of other applications.
In the past, we’ve blogged about using smaller Line Vacs for conveying yarn or string. At the end of a run there’s often too little thread left on a roll to save for a future run. The customer must strip the yarn off the remaining spool in order to reuse it. Using just a small amount of compressed air, a 3/8” Line Vac makes quick work of any residual thread on the spool.
I recently worked with our distributor in Argentina on another unique Line Vac application. Their customer manufacturers a variety of different types of protective plastic mesh. They come in many different sizes and colors and are used to protect the outsides of parts or products during shipping. Their machine required an operator to keep a close eye and at times manually feed the material into the machine as it would get stuck. Their hopes were to automate this process so that they could increase production and alleviate the need for an operator to worry about feeding the material by hand.
Using a Model 6082 1-1/4” aluminum Line Vac fitted with a funnel on the intake side, they were able to convey the plastic material into the cutter. It was cut to length and deposited in a box below. The video below shows the process.
The material is fed off of the spool and into the cutter without jamming or getting bunched up. Production rates are now consistent and they were even able to increase the feed rate by almost 20%. The 6082 consumes just under 26 SCFM of compressed air at 80 PSIG, making it a low-cost solution to what was an aggravating problem for them. In addition to the ability to increase the feed rate, automating this process freed up an operator to monitor additional processes in the facility.
If you have an outside the box application that you believe could be suitable for a Line Vac Air Operated Conveyor, take advantage of EXAIR’s 30 Day Unconditional Guarantee and test one out for yourself!
EXAIR’sHeavy Duty Threaded Line Vac air operated conveyors can take ordinary threaded pipe and convert it into a powerful conveying system for pellets, scrap trim, bulk solids, chips, paper, small parts, sawdust, granules, and many other bulk materials. The Heavy Duty Threaded Line Vac attaches easily to plumbing pipe couplers, making it easy to build a complete system with parts that are readily available from your local home supply or hardware store.
They are available in 7 different sizes ranging from 3/8 NPT to 3 NPT and are made from a proprietary hardened alloy for superior abrasion resistance and performance. Heavy Duty Threaded Line Vac Air Conveyors are ideally suited for conveying large volumes of materials over long distances. They eject a small amount of compressed air to produce a vacuum on the intake side and a high output flow from the outlet side. Using a regulator to control the compressed air supply pressure, the rate of conveyance can be controlled to match what the application requires all while minimizing your compressed air usage!
The Heavy Duty Threaded Line Vac Kit includes a pressure regulator, filter separator to keep the air clean, modular coupler clamp (connects air regulator to filter separator, not shown below) and the mounting bracket for ease of installation.
Line Vacs are still on promotion through October, so act now to receive a free air nozzle with your purchase.
If you would like to discuss Heavy Duty Threaded Line Vac Air Conveyors or any of EXAIR’s safe, quiet & efficient compressed air products, I would enjoy hearing from you…give me a call.
On any given day myself and my Application Engineering Brethren here at EXAIR have discussions with customers on air starvation of any given EXAIR Product. The calls generally start off the same, “The Line Vac is not performing like it should”. We at EXAIR absolutely want to help you get the most out of our products and we certainly want them to perform to your expectation. However they must be supplied with clean/dry compressed air at sufficient pressure and volume.
Just the other day I was discussing a performance issue with a customer on a 1″ Line Vac. The customer thought he needed a larger Line Vac. I asked the questions regarding the diameter of his Supply Line and if he was using Quick Connect or Push Lock connectors. He was attempting to feed this Line Vac with 1/4″ Poly Tubing through a elbow Push to Loc fitting.
This 1″ Line Vac was being severely starved for air and therefore not performing as expected. The 1″ Line Vac require’s 14.7 SCFM @ 80PSI to reach the rated performance of 42″ of water column.
Below is a table for Pipe/Hose sizing from the Line Vac installation manual that you can use as a reference guide. It is recommended that if using hose for the supply air to go up to the next size over the pipe recommendation.
Don’t forget that quick connects and Push Lock fittings are not recommended and could restrict the air flow which will have a negative impact on performance.
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!