MAC Valves Blog

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

Preventative Maintenance for Your Air Valve

Posted by Kristin Sweeney on Wed, Jul 27, 2011 @ 13:31 PM

There are several actions you can take to help extend the life of your air valve.  Here are the most important ones:


Supply air to the valve needs to be free of contamination.  Too much contamination can cause the air valve to stick, leading to valve failure.  Keeping the supply air dry is also very important.  Too much moisture in the air can also cause the valve to stick.



Non-lube service is offered by some air valve manufacturers, including MAC Valves, Inc., which means valve lubrication is not required to keep your valve running smoothly.  However, if lubrication is being supplied to your valve, then you need to consistently lubricate the valve to help keep it from sticking.  Always check with your air valve manufacturer before supplying lubrication to ensure compatibility with the rubber seals of the air valve.  Do not under any circumstance use solvent cleaners such as WD40 as a lubricant or a cleaner for your air valve.  Solvent cleaners dry and degrade air valve pre-lubricants and rubber seals.

  • TEMPERATURE CONTROLtemperature control

Extreme high and low temperatures can interfere with air valve performance.  Make sure that the temperature of the valve is kept between 0 degrees and 120 degrees fahrenheit.  If the temperature of the environment does not fall within this range, then a special modification to the air valve may be needed for certain applications.

Preventative maintenance really comes down to the application and surrounding environment of the valve.  For more help about your specific application, you can contact a MAC Valves sales engineer or your local MDN distributor!

Topics: MAC Valves, air valve, preventative maintenance, clean and dry air, lubrication, temperature control

MAC Noid ® Sets New Standard in the Paintball Industry

Posted by Kristin Sweeney on Thu, Jun 23, 2011 @ 13:49 PM

MAC NoidWixom, MI –MAC Valves, Inc. has developed yet another version of its MACNoid™ solenoid for use in the newest Planet Eclipse® Ego11 marker.  This version of the MACNoid ™solenoid utilizes MAC® four-way Bullet Valve® lifting solenoid technology (patents pending) with integrated flow controls.    


According to Jack Wood of Planet Eclipse LTD, Manchester UK; “Our newest paintball marker – Ego11 comes equipped with an industry first, a bespoke (proprietary) MACNoid™ solenoid – manufactured by MAC Valves, Inc.  USA that incorporates twin flow control devices. These Solenoid Flow Controls each comprise a quarter-turn adjuster which has a pointer to indicate position on an incremental scale etched into the body of the solenoid. The Solenoid Flow Controls are used to independently control both the forward and rearward speed of the rammer and bolt so that, for the first time ever in a poppet marker, the user can tune the feel of the marker with a simple twist of a screwdriver. In the time it takes to turn off the tourney-lock, the EGO11 can be switched from a high speed, uncapped, free-for-all machine to the softest, gentlest, smoothest shooting poppet you have ever felt -- or anything in-between. The analogue adjustment allows an infinite level of control over the speed of the rammer and bolt in either direction, providing unprecedented influence over the dynamic characteristics of the marker. With the Ego11 it looks like you really can have your cake and eat it!” – YouTube link – Ego11 Indepth - Adjustable Solenoid Part 1

Click Here to Download the Bullet Valve® Catalog!

Topics: MAC Valves, Bullet Valve, Solenoid Flow Controls