MAC Valves Blog

MAC High Speed Capabilities Leaflet!

Posted by Kristin Sweeney on Fri, Feb 12, 2016 @ 13:44 PM

Check out MAC's High Speed Capabilities Leaflet!

MAC offers a full line of unique valve solutions with high repeatability, more flow, and exceptional llifetime in every package.







Also be sure to check out the MAC industry page!

Topics: speed, response time, flow

MAC Valves Expands With Lift Axle and Control Valves

Posted by Kristin Sweeney on Thu, Oct 27, 2011 @ 10:47 AM

MAC Valves, Inc. has expanded it’s line of Lift Axle and Control Valves for the truck/trailer Transportation industry. MAC now offers a full line of pneumatic air valve products for single and dual pressure applications.

Lift Axle

These valves can be mounted directly on the chassis or lift axle or truck cab or in a control box.  One lift axle design eliminates the need for external quick exhaust valves and extra fittings.  All of the products are designed to operate in wide temperature ranges ( -25 C to 80 degree C) with the MAC special bonded spool and poppet.

The designs include Cv 1.5 to Cv 3.3 flow ratings. These are the highest in the industry to get your axles up and down quickly.  They can be solenoid and/or remote air operated and include hardcoat anodized parts with stainless steel fasteners.  They also have a NEMA 4 design and include stainless steel filter screens in their ports.lift axle 2

These Lift Axle and Control Valves can be a great improvement to your application!  Contact your local MAC MDN distributor for more details about these great products. They will be happy to discuss your exact truck or trailer applications and will be happy to offer specific solutions to your needs.


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Topics: MAC Valves, flow, Control Valves, transporation industry, Lift Axle and Control Valves

How Solenoids Can Affect Your Fill

Posted by Kristin Sweeney on Wed, Aug 24, 2011 @ 08:24 AM

fillOne of the most overlooked areas of any pneumatic filling machine is the solenoids.  These devices directly operate the filling head to start and stop the flow of a medium.  They operate with pneumatic pressure which is controlled through an electrical signal, sent from the control panel or PLC. 

Once a flow sensor or other sensor reads that the bottle is full, a signal is sent to the solenoid and air is either supplied or removed from the fill head to stop the flow.  Because of the inherent dynamics of solenoids, there will always be a delay, or response time, between the signal and the flow of air changing states on the fill head.

Most machines can be calibrated to compensate for this delay.  Let's assume that your target fill volume for a 500 ml bottle is 505 ml, taking into account evaporation on the store shelf, and you know that a signal sent when the bottle is at 499 ml will actually fill till 505 ml because of the response time of the solenoid.  This situation will be acceptable for the entire machine if all of the solenoids have the exact same response time but most solenoid manufacturers are either unable or unwilling to calibrate each solenoid to provide the same response time.

MAC Valves, however, has developed a process that during manufacturing each solenoid used for a filling application can be calibrated to have a response time with a variation of only ±0.2 ms between valves.  What this means is that while a standard machine running non-MAC Valve solenoids will have on average 10 ml of additional overfill per bottle, when the same machine is converted to MAC Valve solenoids there is only a 2 ml variation across the entire machine.  This will directly translate into thousands of dollars a year of savings depending on the cost of medium and the quantity of bottles filled.

For more information about Filling, please contact your local MDN distributor or a MAC Valves Sales Engineer!

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Topics: MAC Valves, solenoids, filling, pneumatic pressure, flow