How Maintaining Constant Pressure on Your Pivot Can Save You 35 to 40 Percent in Pumping Costs | by Jonny Branom

Growers that use corner machines or have some elevation changes in their field know that there can be a big variance in pressure at the end of their pivot. In a typical corner machine, the difference in pressure can be as much as 35 to 40 PSI between when the corner is extended or retracted.

With a Valley Drive Connect^® and a Variable Frequency Drive (VFD) in your installation, you can maintain a constant pressure at the end of your pivot regardless of the elevation differences you may have, or the position of the corner machine if you use one.

Valley Drive Connect mounts on the end of your pivot and uses a pressure transmitter to measure pressure. The pressure feedback is then sent back to your VFD wirelessly, to adjust your pump speed to maintain constant pressure.

By only supplying your pivot the pressure it needs to operate correctly, you can save up to 40 percent in pumping costs, eliminate pressure spikes, prolong sprinkler regulator life and help prevent pipeline blow outs. Valley Drive Connect can also be used in conjunction with Valley Pump Connect^®. Now you can have pressure feedback from the end of your machine and on/off control from your pivot point, all wirelessly back to your VFD.

Valley Water Management and your local Valley dealer are committed to bringing you the very latest in money-saving pumping technologies. For more information, please contact your local Valley dealer.

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Jonny Branom Project Sales Manager – Valley Water Management Jonny joined Valley Water Management in 2013 as the Western project sales manager. He has more 15 years of experience in industrial automation, instrumentation, wireless controls and VFDs. Jonny has been working with Valley dealers for many years solving control and pumping needs. He lives with his wife, Tammy, and two children in Spokane, WA, and enjoys many outdoor activities around the Inland Northwest.

Save Energy and Money With Variable Frequency Drives | by Wade Sikkink

When growers look to invest in new products or technology for their farming operation, they generally expect to get one of two things out of the investment. It will either increase their output (yield) or it will reduce their operating costs. Either one is a good thing. When growers invest in irrigation equipment they tend to be focused on the yield side of the equation. Adding center pivot irrigation will give a grower higher, more reliable yields, and he can expect that equipment to pay for itself in a reasonable amount of time.

However, irrigation is not just about increasing yield. The equipment and pumping stations have operational costs, so growers also look for ways to reduce those costs. A great way to do that is by using Variable Frequency Drives on your electric pumps. A Variable Frequency Drive (VFD) is an electronic device that can change the frequency of the supplied power to a pump or other electric motor. This means that the pump doesn’t always have to operate at the same speed, but can operate at different speeds depending on demand. 

Let me use an example to illustrate. Corner machines are a great way to add additional irrigated acres to your investment in a center pivot. A typical corner machine on a quarter-mile pivot can pick up as much as 25 acres. However, corner machines can have a big effect on your pumping system. The difference in flow between when the corner machine is extended vs. retracted can be 35 percent or more. That’s significant! If your pump only operates at one speed, and is sized correctly to provide the right amount of water when the corner machine is extended, then it’s going too fast and providing more pressure and flow than necessary when the corner machine is retracted. The bottom line is the pump is using more energy than necessary, increasing your operating costs.

Here’s where the VFD comes in. If there is a VFD controlling the pump, it can reduce the speed of the pump as the corner machine retracts and continue to provide only the needed pressure and flow. The pump is then running at a slower speed and using less energy; therefore, saving money!

The corner machine example I used above strongly illustrates the benefit of using a VFD for your pumping system, but there are many other applications that can benefit just as much from a VFD, including rolling terrain, Benders, VRI, multiple pivots on a single pump, etc.

Valley_® Water Management is focused on designing and building the best possible pumping solutions for growers. We have partnered with Yaskawa™ Electric America to make Yaskawa VFDs available on our custom-engineered pump stations, which are available to Valley dealers for all their pumping applications. Yaskawa is the leader in VFD technology for agriculture applications and its VFD software includes the most control and protection features available on the market today.

In a future post, I’ll tell you about another new product from Valley Water Management called Drive Connect.

To learn more about Valley Water Management VFDs, visit our website.

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Wade Sikkink Director - Valley Water Management Wade joined Valley Irrigation in 2008 as a Product Manager. He has spent a lot of time in the field working with dealers and growers on developing new products. In 2012, Wade changed roles to lead a new division within Valley Irrigation focused on pumping systems for center pivots called Valley Water Management.  When he’s not working, Wade enjoys hunting, fishing, and spending time with his wife and three children on their acreage in rural Nebraska.

A Winning Formula from Valley Water Management | by Tyler Fields

With inflation on the rise and increased power costs, efficiency in pumping applications has reached critical mass. When it comes to the engineering and design of pump stations, Valley_® Water Management has produced a winning formula. Our mission is not only to serve our dealers and customers, but also to always seek and implement the most efficient pumping solutions possible. 

It’s not uncommon for us to completely redesign a project just for cost comparison with an end game of keeping that dollar in your pocket. How does that work? We can save hundreds of horsepower through the use of booster stations, if applicable, which could save thousands of dollars per year.

Another huge money saver is a Variable Frequency Drive (VFD). VFDs are used in aiding the startup of large pumps, which can eliminate demand charges (based on your local power company). The use of VFDs greatly increases the life of your pump motor through a patented “slow start,” as well as byu maintaining pressure instead of wasting it.

Another great tool is Pump Connect™, a product that provides a secure back-up plan when you’re not around. It simply mounts on your center pivot/linear and connects to your pump, enabling it to shut down your pump if the pivot safeties out or is shut off remotely. This one tool saves power, water, and prevents your field from flooding.

VWM is here to help you in your custom applications. Contact your local Valley dealer and get your farm in on a winning formula today!

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R. Tyler Fields Agricultural Engineer Tyler, an agricultural engineer specializing in land and water resources, joined Valley Water Management in April 2013. He had worked in the Valley network for many years, enabling him to work closely with the agricultural irrigation community in assessing the needs of the farm and other Ag industries. Tyler grew up on a dairy farm in south Florida and also has been involved in the daily operations of ranches and row crop farms. Working for VWM allows him to pair his education and his love for agriculture.