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Valve Tech / Re: New CSV to replace my other
« on: January 14, 2012, 08:36:27 AM »
The dimensions are on this web page under products. Scroll down until you find the valve your looking 4.
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I think as many people who find this website, I started out by looking for variable speed controls for my well pump. I am very intrigued by the use of this valve. If it performs as advertised, it would be an acceptable, simpler, and lower cost alternative to the electronic speed controls.
I wish I had a nickle for everytime I have heard that since 1993. That is how long we have been replacing VFD's, which is also what we started with. I guarentee it to perform as advertised. It really is a simpler, lower cost, and superior to VFD's in many ways. That is actually one of the reasons why you haven't heard of it in all these years. People who make their living on pumps, motors, and controls might say they are trying to increase the life expectancy, efficiency, and reduce the "life cycle costs", but that would really be counter productive in terms of "cash flow". So when offered a proven way to make that happen, most will quickly deny knowing of any alternative to a VFD. I actually heard two of my good distributors say that very thing at a trade show last week. They want to keep my product exclusive in their area, so they can make sure no one knows about it. I have been dealing with this problem for nearly twenty years. That is why I have so much on this web page. Thank goodness for the Internet. It makes it hard to keep a good product or idea secret anymore.
Another reason you've never heard of us in all these years is because when something works, people forget they ever had a problem. No one comes to the Internet or forums when they have a CSV and their water system is working perfectly. They just expect water to come squirting out any faucet, at the correct flow and pressure, anytime they need it. They just go on with their everyday life and never give it a second thought. A happy customer will never mention the product, but an unhappy customer will tell a thousand people. So I have to toot my own horn, so to speak.
My questions deal with the positioning and configuration of the CSV and associated piping.
My first question, which I think I have already answered for myself is, does the valve need to be in any "up" orientation or can it be placed in any direction? It looks to me like any direction should work since the valves can be placed in the vertical well piping or in a horizontal pipe run in the house. Am I correct?
Only the 2" and larger valves need to be positioned in a certain way, only to get the air out of the upper chamber. The smaller valves can be mounted in any position.
My second question is about the statement that there can not be any water uses/outlets before this valve. Is this because the valve will be damaged by reverse flow, or because the valve will not function properly in reverse flow, or because any outlet before the valve would not have the benefit of the constant pressure? I ask this because I live on a farmette and the water in the barn is run from the same well and pressure tank that the house is and the split in the line is out in the yard, probably just outside the pitless connection on the well casing. I would rather have the valve in the house so I can easily adjust it and control the pressure in the house and let the barn pressure be whatever it will be since all I use that water for is filling stock tanks for the horses and chickens. It seems to me that a simple arrangement of a bypass loop with a reverse direction check valve in it would allow the water to flow at high volumes to the barn from the house like it does now, but would allow the CSV to control the pressure in the house when water is being used in the house. If damage to the valve occurs in the reverse flow condition, a check valve before the CSV would prevent any water from flowing backward through the CSV and allow all of the reverse flow to go around the CSV through the reverse check valve in the bypass loop. There would be no issues with negative pressures anywhere in the line since once the flow stops the pressure would equalize on both sides of any or all check valves in this configuration.
Thirdly, other than the bypass loop mentioned above, would it be a good idea to install a bypass loop around and isolation valves before and after the CSV in case a problem does arise where the CSV needs to be serviced or removed so that the system does not need to be depressurized and drained to do so?
It won't hurt anything for water to flow backwards through the CSV. However, it will only flow backwards at 1 GPM until the pressure is lower than the setting of the CSV. Then it will open fully until the pump comes on and the water starts coming from the other direction. So the bypass around the CSV with a reversed check valve is a good idea an we do it all the time. You have to also be aware that at times there maybe as much as 150 PSI on the lines and faucets prior to the CSV, and that your pump will still cycle while using water from these lines. Small amouts of use as filling a bucket or two is OK, but longer uses require using all the water the pump can produce to keep the pressure from getting too high and from cycling the pump to death.
This is one reason we make CSV's that will fit in the well itself, so that everything will have perfect control, not just part of the system. And it is overthinking to think you will need to adjust or even see the CSV. It will be fine in the well because you will never have to touch it.
Sorry, I'm a process engineer and this is just how my mind works. I hope I didn't cause any brain trauma.
NO problem there. I appreciate the good questions on the forum. It is not my brain having trauma that I am worried about. Sorry, just how MY miind works. Cary
Thanks