Tag: turn off

Let the EFC Turn Your Compressed Air Off!

Published on by Jordan T ShouseLeave a comment

Compressed air is not free! But when used correctly, it’s a tool that, in most cases, is the most effective option! The best way to save compressed air is to simply turn it off when it’s not being used. This might seem pretty simple, but there may be processes in your facility where this couldn’t be achieved by just turning a valve. In applications where product is traveling along a conveyor and must be dried, cooled, or blown off, there is likely some spacing in between the parts. It isn’t necessary to keep the blowoff running constantly if there are periods of intermittent spacing. To help reduce the overall load on the air compressor, implementing a solution to shut the air off in between each part can have a dramatic impact.

EXAIR’s Electronic Flow Control, or EFC, is designed to improve efficiency by reducing overall compressed air usage. It utilizes a photoelectric sensor that detects when the part is present. When it’s not, it triggers a solenoid valve to close and shut off the compressed air supply.

efcapp
EXAIR EFC

One way to use the Electronic Flow Control would be to turn an Atomizing Spray nozzle on to coat your product.  For example see the photo below where you can use the EFC to sense the pants coming down the line. Then turn the air supply on to spray a bleach solution to get the weathered look you are after. Once the pants pass, the EFC will turn the nozzle off, replacing a manual operation while saving compressed air and your liquid solution!

Another use would be to tell when a hopper that is being filled by a Line Vac is empty or over filled.  You can adjust the sensor and the control module to sense that the hopper is empty, and it will turn the compressed air on to the Line Vac to then feed the hopper.  Then set the timer module so it will run for the length of time it takes to fill the hopper.  The other way would be to place the sensor at the top of the hopper and have it sense when the pile of media has reached the full level.

The EFC models available from stock can accommodate flows up to 350 SCFM. For applications requiring more compressed air, EFCs with dual solenoids are also available. If you have an application in one or more of your processes where intermittent compressed air use could help save you money, give us a call. We’d be happy to take a look at the application and help determine just how quickly the EFC could start paying YOU.

Jordan Shouse
Application Engineer

Send me an Email
Find us on the Web 
Like us on Facebook
Twitter: @EXAIR_JS

EXAIR Solenoid Valves and Ball Valves

Published on by John BallLeave a comment

EXAIR has been a pioneer in compressed air products for efficiency, safety, and quality.  We have designed our products using some interesting inventors from the past; like Henri Coanda and Giovanni Venturi.  These fluid dynamic engineers found a way to entrain ambient air.  We use these phenomena to increase the efficiency of our products by adding free ambient air to the airstream.  This will create a hard-hitting force without using a lot of compressed air.  Since compressed air is very expensive to produce, it will save you much money when using our blow-off devices.  To save even more money, EXAIR does offer valves to turn off the compressed air supply when not in use.  In this blog, I will go over the types of valves that we have.

The Manual Valves allow operators to turn on and off their system by hand. The full-flow ball valves range from ¼” NPT to 1 1/4” NPT in size and will not restrict flows.  EXAIR also offers a manual foot pedal valve for hands-free operations.  This ¼” NPT foot valve has a 3-way operation and works great if the operator has to use both hands in their process.

EXAIR also offers Solenoid Valves to turn on and off the supply of compressed air electrically for automated systems. We offer Solenoid Valves in three different voltages; 110Vac, 240Vac, and 24Vdc.  They have a large range of flows with ports ranging from ¼” NPT to 1” NPT.  All models are UL listed and are CE and RoHS compliant.

In more elaborate situations, EXAIR has attached these solenoid valves to a miniature PLC-like controller.  It is called the Electronic Flow Control, or EFC.  It uses a photoelectric eye to detect the part and trigger a timing sequence.  We have eight different timing operations to best combine the trigger mechanism with the blow-off device.  This is the next step in optimization, which will keep the compressed air usage to a minimum. 

EXAIR created a chart that shows “Six Steps to Optimizing Your Compressed Air System.”  Even though EXAIR has the most efficient products on the market for pneumatic systems, we still want to help our customers save even more money.  When not in use, the compressed air should be turned off, according to the fourth step.  In this blog, I discussed some products that can assist you with this.  If you wish to discuss further how to optimize your compressed air system, an Application Engineer at EXAIR will be happy to assist you. 

John Ball
Application Engineer


Email: johnball@exair.com
Twitter: @EXAIR_jb

Save Compressed Air with the EXAIR Electronic Flow Control

Published on by Jordan T ShouseLeave a comment

The best way to save compressed air is to simply turn it off when it’s not being used. This might seem pretty simple, but there may be processes in your facility where this couldn’t be achieved by just turning a valve. In applications where product is traveling along a conveyor, and must be dried, cooled, or blown off, there is likely some spacing in between the parts. It isn’t necessary to keep the blowoff running constantly if there’s periods of intermittent spacing. To help reduce the overall load on the air compressor, implementing a solution to shut the air off in between each part can have a dramatic impact. EXAIR’s Electronic Flow Control, or EFC, is designed to improve efficiency by reducing overall compressed air usage. It utilizes a photoelectric sensor that detects when the part is present. When it’s not, it triggers a solenoid valve to close and shut off the compressed air supply.

efcapp
EXAIR EFC

One way to use the Electronic Flow Control would be for Turning a Atomizing Spray nozzle on to coat your product.  For example see the photo below where you could use the EFC to sense the pants coming down the line. Then turn the air supply on to spray a bleach solution to get the weathered look you are after. Once the pants pass the EFC will turn the nozzle off, replacing a manual operation awhile saving compressed air and your liquid solution!

Another use would be to tell when a hopper that is being filled by a Line Vac is empty or over filled.  You can adjust the sensor and the control module to sense that the hopper is empty and it will turn the compressed air on to the Line Vac to then feed the hopper.  Then set the timer module so it will run for the length of time it takes to fill the hopper.  The other way would be to place the sensor at the top of the hopper and have it sense when the pile of media has reached the full level.

The EFC models available from stock can accommodate flows up to 350 SCFM. For applications requiring more compressed air, EFCs with dual solenoids are also available. If you have an application in one or more of your processes where intermittent compressed air use could help save you money, give us a call. We’d be happy to take a look at the application and help determine just how quickly the EFC could start paying YOU

Jordan Shouse
Application Engineer

Send me an Email
Find us on the Web 
Like us on Facebook
Twitter: @EXAIR_JS

Turn It Off: Saving Compressed Air The Easy Way

Published on by Brian FarnoLeave a comment

A major benefit to utilizing compressed air is the speed at which it can be shut off and re-energized for use – in fact, this can be done instantaneously. Shutting down the supply of compressed air to an application while it is not needed can drastically reduce the compressed air consumption of the process. This is an easy remedy that can produce significant savings.

Think about a place where you have a compressed air blow off with spaces between the parts or dwell times in conveyor travel. What about break times, do operators continue to keep the air on when they leave for a break or even worse, for the day?

Step number four in EXAIR’s Six Steps to Optimization is:

A simple manual ball valve and a responsible operator can provide savings at every opportunity to shut down the airflow. But an automated solution is a no-brainer and can provide significant savings.

Quarter Turn Ball Valves are low-maintenance and easy to install/use.

For a more automated approach, you can add a solenoid valve that would tie into your existing PLC or e-stop circuit, into your compressed air supply lines to aid in turning the compressed air on and off.

For an automated on/off solution can be found by using the EXAIR EFC (Electronic Flow Control). The EFC is made to accept 110V or 220V AC, and convert it to 24V DC to operate a sensor, timer, and solenoid valve. Its multiple operating modes allow you delay on, delay-off, and delay on/off among others. The operating mode can then be set to the specific time necessary for a successful application.

The spaces between parts can be turned into money saved. Every time you reach the end of a batch run, the EFC can turn the air off. You can also add solenoid valves and run them from your machine controls. If the machine is off, or the conveyor has stopped – close the solenoid valve and save the air. The modes are all defined in the video below.

So, take a look, or even better a listen, around the plant and see what you can find that could benefit from turning the air off; even if it is just for a moment it will help put money back into your bottom line.

Brian Farno
Application Engineer
BrianFarno@EXAIR.com
@EXAIR_BF