EXAIR Line Vacs™: Air Operated Conveyor Promo

EXAIR Line Vacs

As an Application Engineer, I get the pleasure to speak to many companies about finding a simple, long-lasting, powerful and quiet type of transfer system.  Companies have operators that climb steps to dump bags of material into hoppers above.  This can be dangerous and is not ergonomic.  Other applications would include a compact way to remove scrap from a process; or budgetary constraints to convey material from point A to point B.  If your company has to tackle any of these issues, EXAIR can help you.  We manufacture Air Operated Conveyors that do not have any moving parts, very compact in design, and have a high throughput capacity.  They can attach easily to standard hoses, pipes, or sanitary flanges.   These inexpensive conveyors are designed to make conveyance safer and ergonomically better for your staff.  EXAIR calls this product line, Line Vacs™

Line Vacs can convey many things.

Line Vacs use a small amount of compressed air to generate a vacuum by a Venturi effect.  The unique design generates a high velocity to create a powerful vacuum on one side.  Once the product reaches the throat area of the Line Vac, the compressed air will carry the product the rest of the way.  We can reach horizontal distances up to 100 feet (30 meters) and vertical heights up to 20 feet (6 meters).  EXAIR manufactures a variety of Line Vacs in different sizes, styles, and materials.  Here is an overview of the Line Vacs that EXAIR offers.

Lightweight and durable aluminum is the most popular choice, but we make them in stainless steel (Types 303 and 316) for heat and corrosion resistance. For extreme heat, the High Temperature option affords protection to 900F (482C) in either 303SS or 316SS.

Line Vacs:  Our standard Line Vac is the most versatile product in this family.  We have two types of connections, slip-on ends for hose connections and threaded ends for pipe connection.  EXAIR can also mix the connection types on each end.  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 from asking for special types of materials.  We have a high temperature version that can withstand temperatures up to 900oF (482oC).  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 place a bag of dry material on his shoulder to climb stairs, a Line Vac would be a much better alternative.

Heavy Duty Line Vac Family

Heavy Duty Line Vacs:  They 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. (18.2 Kg/min) of material.  With the hardened alloy construction, they are great for sand blasting materials, 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.      

Light Duty Line Vacs

Light Duty Line Vacs:  On the other end of the Line-Vac spectrum, EXAIR created the Light Duty Line Vac.   They use much less compressed air than the other Line Vacs which is 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. 

Sanitary Flange Line Vacs

Sanitary Flange Line Vacs:  Our latest engineering design within the Line Vac family is the Sanitary Flange Line Vacs.  They can 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.  (Bracket are not sold with all types and sizes.)  The filter will help keep the Line Vac clean as well as the product that it being conveyed.  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.      

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 are 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.  For our U.S. and Canadian customers, we are running a promotional ad.  You will receive a 2” Flat Super Air Nozzle, a $75.00 value, for free from now until the end of October 2021 with a qualified purchase online.  If you would like to discuss your conveying application further, please contact an Application Engineer at EXAIR.  We may have the perfect solution for you. 

John Ball
Application Engineer

Email: johnball@exair.com
Twitter: @EXAIR_jb

Conveying Coffee Beans With EXAIR’s Line Vacs

We often take for granted the simple process of brewing a fresh pot of hot coffee in the morning. But do you ever consider where this coffee came from and how it made its way into your kitchen? We’ve documented the life of the coffee bean previously here on the EXAIR Blog.

For manufacturers looking for a way to convey bulk coffee beans (both before and after roasting or grinding), EXAIR’s Line Vac is the simple and easy solution. In many cases, this operation is performed manually by an operator. In applications where operators must manually lift loads of bulk material, this opens them up to a variety of potential risks and hazards.

EXAIR's Threaded Line Vac Family

The EXAIR Line Vac allows you to use an ordinary supply of compressed air and standard hose, tube, or pipe to turn that compressed air into a powerful conveying system. Installation is quick and easy. With no moving parts to wear out or replace, the Line Vac is a maintenance-free product that’ll not only keep your operators safe but also dramatically increase productivity.

This was the exact case for a customer of our Colombian Distributor (home of some of the best coffee beans in the world). They were seeking a method of transferring their whole and ground products automatically so as to eliminate any potential safety concerns to their personnel. What turned out as simply a means of increasing safety, also provided them with an ability to transfer the product more quickly.

They were manually moving bulk sacks of coffee at a rate of approximately 80kg/hr. With the Model 141100-316 (1” NPT Threaded 316 SS) Line Vac, they were able to convey 150 kg/hr of ground coffee and 250 kg/hr of coffee beans at a height of over 30’ (10m). So, not only did they eliminate a potentially hazardous process, but they were able to move nearly 2x the volume of coffee in the same time period.

EXAIR’s Line Vacs are available from stock in aluminum, type 303 & 316 stainless steel, and a hardened alloy steel for use in abrasive applications. Each style is offered with either smooth connections for use with smooth-bore hose, or with NPT threads depending on your preferred connection style.

Available to ship same day from stock with orders in by 2:00 ET and backed by our unconditional 30-day guarantee, there’s no excuse not to try one out in your process! If you’d like to discuss a possible application for our Line Vacs, feel free to get in touch with us via phone, chat, or e-mail.

Tyler Daniel
EXAIR Corporation
E-mail: TylerDaniel@EXAIR.com
Twitter: @EXAIR_TD

Coffee image courtesy of trophygeek via Flickr Creative Commons License

EXAIR’s 2-1/2″ 303SS Threaded Line Vac Brings Home the Gold: 2020 Plant Engineering Product of the Year

While Team USA is out in Tokyo winning some gold medals, EXAIR is taking a similar approach. Winner of Plant Engineering’s Product of the Year Award in the Material Handling Systems Category, EXAIR’s 2-1/2″ NPT 303 SS Threaded Line Vac is a simple pneumatic conveyor for transferring of bulk materials in your processes.

Available with NPT threaded connections, EXAIR’s Threaded Line Vac air operated conveyor 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 2:00 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.

Tyler Daniel
Application Engineer
E-mail: TylerDaniel@EXAIR.com
Twitter: @EXAIR_TD

EXAIR Line Vacs™: We can do specials…

Here is a question; what is an eductor?    Eductors are also called ejectors, Venturi jets, aspirators, jet mixers, or jet pumps.  Eductors use either compressed gas or liquid to generate a vacuum by a Venturi effect which is based on Bernoulli’s equation.  (You can read more about the person here, “People of Interest: Giovanni Battista Venturi March 15, 1746 – April 24, 1822 By Tyler Daniel”.)  They can be used for vessel evacuation, gas sampling, pump priming, venting, and blending.  EXAIR Line Vacs work on this same principle in creating a Venturi vacuum by using compressed gas.  In this blog, I will cover the design, verification, and testing that EXAIR provided for a customer’s special.    

For this customer, the design was based around our 2” and 1” 316SS Line Vacs.  They required ISO flanges on the vacuum and exhaust sides to match their piping connections for gas sampling.  They would supply nitrogen to the inlet port as a carrier gas to generate the venturi and to mix with the sample gas.  Since the accuracy of the test is dependent on the amount of each gas, we had to test the operations of the Line Vacs at different conditions. 

First, EXAIR designed these special Line Vacs to get approval.  Once the customer approved, EXAIR had to make a strong effort to meet the other criteria that was requested.  Generally, with our standard Line Vacs, we use our test data with estimated conveyance rates, inlet flow rates, and vacuum pressures measured at 80 PSIG (5.5 bar).  For these special Line Vacs, we had to do a bit more work because it was for gas sampling.  This was not a problem for us.  EXAIR has many calibrated instruments to accurately measure different conditions.  For this customer, we had to measure the inlet flow, suction pressure, velocity, and maximum back pressure at different inlet pressures.  We also had to create another chart showing the exhaust velocities with a back pressure present. 

From these details, the customer could calculate the amount of nitrogen that would be introduced to the gas sample at different pressures and backpressures.  And, as an added preference, they requested us to do a leak check after assembly.  We were willing to buy the flange blanks and add this test procedure to the router.  We looked for leaks between the cap and body of the special Line Vac, as well as the flanges to verify that gas was not escaping.  EXAIR tries to support our customers to the best of our abilities.  For this customer, we worked together to provide the needed information for their setup.    

The reason that I wrote this blog was to show that EXAIR has the capabilities to make special items for specific applications.  If we need to use different materials, design configurations, and even present test data, we can decide the best course of action.  With special products, they are unique to customers in fit, form and function as a solution, whether for end-users or OEMs.  For the special Line Vac above, we presented the data as related to an eductor for this customer’s decision to place the order.  If you would like to see if EXAIR can make a special product for you, please do not hesitate in contacting an Application Engineer at EXAIR.  We will be happy to work with you. 

John Ball
Application Engineer

Email: johnball@exair.com
Twitter: @EXAIR_jb