Line Vac for Matrix Removal from Labelling Application

We have been able to specify Line Vacs for a variety of interesting applications that generally tend to be classified as “hopper loading” types of applications. But sometimes, we also get to see them used for other tasks for which they are perfectly matched in their ability. One is for movement of yarn/string as shown in this video originally mentioned in Brian Farno’s blog “Yet Another Way to Help You, Customer”.

Matrix Removal 1Matrix Removal

Another great application is in the labeling process (1. Line Vac; 2. Conveying hose; 3. Compressed air supply and on/off valve). After the labels have been applied to their respective product, there is a waste stream that is referred to as “the matrix”. No, I’m not talking about the movie, but rather the release liner that labels are affixed to in bulk format prior to being used. The normal method for taking up this waste stream was to use a winder. However, after some amount of time, the winder inevitably becomes filled with the matrix and must be emptied. The Line Vac presents a unique advantage in that it can pull the matrix from the machine and simply blow it out to a waste receptacle. The above photos are the most recent incarnation of this system. Below is an older system that has a little different twist.

Matrix Removal 2Matrix Removal 3

If you have a labeling system giving you trouble due to the winding process getting fouled, give the Line Vac products a try. We have models from 3/8” hose size up to 4” hose size which can accommodate various sizes of product moving through.

Neal Raker, Application Engineer

It’s Fair Time

We were at a cook out, and the grill master asked if the ground cow was ready. The term disturbed one young lady until it was explained to her that ground cow is hamburger.  Interestingly, as we become more urbanized, some of the basic facts of life we learned on the farm not so long ago are being lost.

Agricultural shows (Fairs) are an important part of cultural life in small country towns, and popular events in larger towns and cities. Shows range from small events in small towns usually lasting two days, through medium-sized events of three days, to large state fairs lasting a couple of weeks.

American county fairs developed in the 1800’s and was a venue to show new equipment and farming techniques. Over time entertainment has been added.  In the 1900’s the 4H groups were sponsored. The focal point of 4H has been the idea of practical and hands-on learning, which came from the desire to make public school education more connected to rural life. Early programs tied both public and private resources together to benefit rural youth.chicken

One of  the employees at EXAIR has 3 kids in 4H and they live in the city. Their project this year was to raise market chickens for show but ultimately for the table. It was a learning experience for all three as it required teamwork and responsibility for the care and welfare of the brood. Their efforts were rewarded by being able to show their three best at the fair, having them judged and then auctioned off. The community well supports the program as these three went for $150. It is not the value of the chicken but donors way of supporting the program and pocket-money for the kids.

Our children are our future. Activities like 4H, Junior Achievement, Scouts, and others prepare them to be respectful, responsible future citizens. We are certain there are many other programs out there for our kids to participate in, do you have a favorite? We appreciate hearing about what is learned from these programs. Our employee here has found that 4H has provided the kids an opportunity to be active, responsible, and accountable while developing a good sense of community.

Joe Panfalone
Application Engineer
Phone (513) 671-3322
Fax (513) 671-3363

Monitoring Is Apparently The New Thing To Do

Over the past month, I have been loosely watching the events revolving around a former government contractor, Edward Snowden.   The contractor leaked classified information about how the NSA monitors the US citizens.   This has of course brought on a large amount of news coverage and lots of questions from the US citizens to the government.  Others have been able to turn it into a laughing matter like Jimmy Kimmel did on his show.   Below is the commercial Jimmy did for the NSA on his show.

So with all the talk about how every little thing you do is monitored, and I am probably going to end up on several lists for keywords in this blog, why not begin your own monitoring campaign.


EXAIR offers a full line of monitoring devices for your compressed air system, after all it’s the first step in the 6 Steps To Compressed Air Optimization.  The best part of our offering is that you can not only use the EXAIR Digital Flowmeter to monitor your compressed air system, when combined with the Summing remote display and/or the USB Data Logger, you can also collect the data from the meter.

The complete setup will allow you to easily see, and calculate, your cost savings before and after you implement an Intelligent Compressed Air product.

If you have any questions on how EXAIR can help you monitor your compressed air system, give us a call, chat, fax or e-mail.

Brian Farno
Application Engineer

Air Compressor Throughput Control

Throughput Control

At the end of my last blog, I mentioned the slide valve operation on a screw compressor.  A slide valve is the basis of throughput control for a screw compressor.  Throughput control is a term used to describe the process of controlling the energy input to the compressor in order to reach the control objective (output pressure and/or flow).  No matter the type of compressor, throughput control is achieved by using speed control, suction throttling, discharge throttling, or recycle control.  There are a few other methods of controlling throughput, but these four are the most common, and throughput control is a common practice used to dial in the needs of a compressed air system/application.

The first, speed control, is the most common and most efficient method.  Essentially, the output flow and pressure are regulated by adjusting the speed of the motor driving the compressor unit.  Increasing the speed of the motor driving the compressor will result in an increased output flow at a constant pressure, or an increased output pressure at a constant flow.  Speed control can also be coupled with other control methods to fine tune the throughput of the compressor.

Suction valve throttling is exactly what it sounds like.  The incoming air flow and pressure are restricted by installing a control valve immediately upstream of the compressor inlet, and the valve’s position is controlled as a function of the exhaust discharge pressure and/or flow.  When the valve is activated and the suction is “throttled” or restricted, the output flow will decrease (because there is less air taken in by the compressor), and the output pressure will subsequently increase.

Discharge valve throttling restricts the pressure from the compressor to match the process requirements at a constant flow.  As a result of this setup, the compressor must work harder than the process requires and this control scheme is extremely inefficient.

Recycle control uses a valve to return compressor discharge flow back to the suction port of the compressor.  As many people know, compressing a gas can generate a good amount of heat, and this heat is often transferred into the compressed air.  Because of this, a cooler is usually (and should be) installed in the line between the recycle control and the suction valves.  The recycle valve can modulate from fully open to fully closed, which gives a full range of control over the discharge flow and can help with loading/unloading of the compressor.

These control methods are all fairly straightforward and on their surface aren’t too intimidating.  They remind me of rudimentary PID controllers, which can be dialed in to a tee.   Think of the way an elevator car reaches the intended floor without slamming to a stop or jolting when it starts moving.  That’s achieved though PID control, and similar methodology is applied to compressor load and unload as well as operation.  But if I get under the surface of compressor control and see PID diagrams, I’m getting the professor!

Lee Evans
Application Engineer

Video Blog: Proper Supply Plumbing for Compressed Air Products

This video illustrates how improper compressed air supply lines can result in a pressure loss and impact product performance.

Russ Bowman
Application Engineer
EXAIR Corporation
(513)671-3322 local
(800)923-9247 toll free
(513)671-3363 fax

Vortex Tube Keeps Electronics On Board Heated Tool Cool

Box and sm VT

The application is that our customer has a tool (represented by the blue box) which is heated up to as much as 80°C in some cases. The tool utilizes an on-board micro-processor which must stay down below 35°C in order to function properly to maintain the process. The micro-processor is housed inside a specially designed box with quick release opening and two M25 ports.

The customer came to EXAIR seeking a Vortex Tube that can withstand the heat produced and also keep the micro-processor below the target temperature.

Model 3208 Vortex Tube, set to 80% cold fraction and powered by compressed air at 60 PSIG produced more than enough cooling power to keep the small enclosure at the desired set point. Previously, the customer was using un-cooled compressed air, straight from a hose. That solution was not cool enough to do any good. The customer actually needed cold air to offset the constant heat of the tool.

If you will recall my previous blog about Cooling Load Cells; this is another great example of being able to provide just enough cooling power, right where it is needed and doing so with a very small product so it can fit into tight spaces.

Neal Raker, Application Engineer

Epiphanies Can Happen Anywhere And Everywhere

I know I’ve blogged before about some of the characteristics that were instilled in me from my father.   This past week I had an epiphany, it was yet another time when I realized that my position in EXAIR is exactly where I need to be.  I only wish it took place like the epiphanies from the episode of Scrubs below.  (Side note: Scrubs is by far my favorite TV show, next to Cheers, and Dukes of Hazard)

The event that sparked this epiphany was when I was scrolling through a few threads on a local motorcycle forum, and found a riding buddy had just bought a new bike.  The only problem he had, was that he had no way to pick it up. He needed a trailer.  So, I sent him a message and set my small trailer up for him.  He picked it up from my driveway while I was at work and will be dropping it back off this weekend.   The fact is that I have only been out riding with this guy two or three times.  I know who he is and where he works but through out mutual hobby I felt no worries about letting him borrow my trailer for a week.

As I was putting a ramp and straps on the trailer in my driveway, I had the epiphany.   One of the reasons I love my job here at EXAIR so much, is that I get to help our customers everyday.  Not only do I help our customers, I even get to help other team members with their projects on a daily basis.


I’ve never been one to look for the spotlight but I have always been one that wants to help whenever possible and not expect a single thing in return.   It’s part of the whole Karma and pay it forward campaign that we need to see more of in the world today.

So if you need a hand with your compressed air system, give us a call.  It’s not just myself that will help here.  It’s every single member of our EXAIR team.

Brian Farno
Application Engineer