Author Topic: CSV Control While Water Tower being serviced  (Read 3133 times)

Cary Austin

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CSV Control While Water Tower being serviced
« on: September 21, 2014, 08:09:13 AM »
This is a picture of the pump system at Hook, Texas.  They were planning on using pressure relief valves on fire hydrants to discharge excess water being pumped while the water tower was out of line for service.  They calculated they would be wasting about $40,000.00 worth of water while the tower was being serviced.  Carey Gould found us on the Internet and talked the engineers into trying CSV's instead.  The CSV's deliver as little as 3 GPM to as much as 1600 GPM directly from the pumps to distribution.  The CSV's make the discharge amount from the pumps exactly match the amount needed in the distribution system.  The pumps run all the time, but the CSV's reduce the amperage when the flow rate is also reduced.  This system is running without a water tower or any pressure tanks on the system.  The CSV's make the pumps feed the system exactly the right amount of water at anytime of day or night.  To do this the CSV's are also holding a steady or constant 70 PSI on the system.  When CSV's control the system, there really is no need for a water tower or pressure tank in the system.



Cary, the valves are working perfectly.  They had a major water leak yesterday and the valves performed as planned.  They have not had any complaints about water pressure at all.  I wish I would have known about these years ago. The city personal and the engineers are very impressed.  I have also included pics of the instillation.

Thanks,
Carey Gould
PROTECTIVE LININGS & COATINGS, INC.
15156 Country Place
Alexander, Arkansas 72002
« Last Edit: July 27, 2020, 12:32:43 PM by Cary Austin »

Cary Austin

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Re: CSV Control While Water Tower being serviced
« Reply #1 on: February 23, 2015, 02:07:22 PM »
No News is Good News.  :)

Cary Austin

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Re: CSV Control While Water Tower being serviced
« Reply #2 on: July 27, 2020, 12:37:18 PM »
Credit: HOOKS, TX Coating removal, sandblasting, and applying primer begin a 1970s tank repair.
In this first story on water tower refurbishment, the author covers the steps a town took to prepare the water tower for refurbishment and the considerations the town faced with the project.  In Part 2 of this article, we’ll look at the application of high tech coatings to ensure a long service life.
What do you do when you’re a one-water-tower town, struggling on a shoestring budget and a routine inspection by state officials hands you a report card of multiple, and expensive, repair violations. You’ve got a water tower refurbishment project on your hands.
Donald Buchanan, town administrator of Hooks, TX, a community of about 4,000 located fifteen miles west of Texarkana on the Arkansas border in northeast Texas, describes his dilemma.
“We have a water tower inspection every year and we got handed a list of things to fix. Fortunately, we had passed a bond issue to do water and street repairs, but the problem with the water tower was a big one.”
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Buchanan says it’s likely that “nobody had been inside the water tower since the day it was built in 1968,” but that now, there were cracks and deterioration and the needed repairs would cost the town a hefty bill in citations if left undone.
“Since we only have one water tower, we had to figure out how to deliver water to our people, and still fix the water tower. We can’t turn off water for the three to six months that we needed to do the repairs. The one idea was to put a pump on and then divert the water to a tank, but have it attached to a fire hydrant where a pop-off valve would release pressure when it got too high.”
But this was not a good solution, Buchanan says, “because if we did that, we would lose about $30,000 of water. We have to buy our water from Texarkana and can’t afford to waste it.”
Buchanan says their engineer then heard about what is called a cycle-stop valve, from Russell Hicks of Induron Protective Lining and Coatings, the company whose coatings allowed for a very successful water tower repair. Hicks explains the scenario the town faced at the outset.
“Small town funds are tight and when you take a tank out of service to rehab, it’s a big production.”
Hicks says the town had last rehabbed the 300,000 gallon pedesphere tank back in the 1970s so a major facelift was in order.
How to Keep the Water On
“What we were going to do involved a complete removal of all coatings, then blast it to white metal on the outside, and then blast the inside as well. Then, coat the inside and outside with primer and finish coats. But, before we did anything we had to figure out how to divert the water and provide service. I had run across this variable-frequency device (VFD) called a cycle-stop valve which actually works so well you don’t even need a water tower.”
Hicks says he brought the innovative technology to Kiron Browning of A.L. Franks Engineering who was already working on the project, and Browning introduced the idea to Buchanan and his staff. Beyond the concern for continuous public drinking water supply, the town and engineers also required that there would be enough water for fire suppression during the rehab time. Hicks describes why the cycle-stop valves were the perfect solution to ensure all water needs would be met.
“I explained that typically, when you use other VFDs to supply water to the end-user without the use of gravity—like in a water tower—these devices can’t manage pressure changes that well, and this can cause water hammer, and blow out pipes. This cycle-stop valve is a continuously regulating device that prevents this. So we installed two of them for the aboveground water holding tank. This diverting process not only saved water, but worked so well nobody in the town knew there was anything different going on with their water delivery.”
Hicks says these valves, which continuously regulate pressure and amperage, were under $11,000 to purchase and install. They not only allowed work to begin, but saved hundreds of thousands of gallons of water and up to $40,000 in water waste costs.
In Part 2 of this article on water tower refurbishment, we’ll look at the application of high tech coatings to ensure a long service life.

Cary Austin

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Re: CSV Control While Water Tower being serviced
« Reply #3 on: July 27, 2020, 12:38:37 PM »
The following is an email I got from a guy who paints and repairs water towers.  He normally uses pressure relief valves on fire hydrants and lets the excess water run down the street while he is working on the towers.  He had calculated that they would waste $40,000.00 worth of water while he painted the tower in Hooks, TX.  He found us on the Internet.  I guaranteed it to work so he tried it.  This system does not even have a little 80 gallon tank.  The CSV’s on those two pumps just feed the right amount of water to the city.  Those pumps with the CSV’s can deliver as little as 5 GPM or as much as 1600 GPM to the city at constant pressure, without any kind of water tower or tank.

Re;  Hooks, Texas
Cary, the valves are working perfectly.  They had a major water leak yesterday and the valves performed as planned.  They have not had any complaints about water pressure at all.  I wish I would have known about these years ago. The city personal and the engineers are very impressed.  I have also included pics of the instillation.
Thanks,

Carey Gould

PROTECTIVE LININGS & COATINGS, INC.
15156 Country Place
Alexander, Arkansas 72002