First off thanks Cary so for all your help. Not too many responding to my queries.
I ran through your video twice and 100% makes sense to me. It seems in essence that the cycle stop will reduce the number of times the pump cycles correct? I should be worried how long pump runs but the # of times it cycles?
It sounds like your control valve is really the perfect thing to incorporate. It seems like a very simple concept but very effective.
This set up is only for a lake pump to supply water for an underground lawn irrigation. I was also planning to have a garden spigot for a garden hose. SO just to review... lake water is <12 lower than pump and I was going to position pump 70-75' from waters edge. If I use 3 rainbirds that use 3-4 gallons that would translate to approx 12 gpm per zone. As long as I buy a pump that will produce at least approx 15 gpm @12 feet elevation, (taking into consideration friction loss) I should be pretty good. Ad if I went 4 rainbirds that would be 16gpm and essentially I would just need a bit larger pump? Am I on the right track?
Question, now about your product, according to the video the size of tank isn't that much off on issue as your valve balances the flow of water out of the tank?
I live in Canada but I would like to buy and try one of your valves. No sense buying the kit with the tank, as it would only cost more to ship. Do I purchase directly from you? You indicate you can preset the valve pressure for me anywhere from 15 psi to 150 psi! I assume it should be the maximum that these sprinkler heads will allow?
You don't know how much time I have spent reading and talk with local shops here (which I may add hasn't been extremely helpful). Your posts to me have been great,.... and I am excited to try your valve. I have been concerned about the on/off cycles but this will solve that. Now I assume I just have to purchase a pump that will give me that 15-20gpm.
What size of tank should I look for. (Sounds like size of tank is now more irrelevant with your valve??)
Thank You
Right it is the cycling on and off that destroys pumps. Pumps are made to run 24/7/365 and I have one that hasn't turned off in nearly 19 years so far. The closer to the waters edge for the pump the better. Using HJ's quote, you can pump water to the moon, but you can only suck water up 24' at most. You could also use a submersible in the lake instead of a jet pump.
To barely get 16 GPM at 50 PSI you will need a jet pump like a J10S in 1HP. The J15S is 1.5HP and would give you up to 25 GPM at 50 PSI, and the CSV would let it work down to as little as 1 GPM without hurting anything. Always better to have a pump slightly larger than you need than smaller than you need.
The CSV make the pump deliver from 1 to 25 GPM, matching the amount of water you are using. Water is going right past the tank, so the size of the tank is a moot point. The 4.5 or 10 gallon tank is plenty. No reason to go any larger.
Every country in the world, including Canada, puts import fees and restrictions on products coming from the US. This makes products from the US much more expensive and hard to get. I don't know why the US puts up with such unfair trade practices? Anyway, we know the problems with trying to get US products in Canada. We make the PK1ALT, which the LT means less tank. This is so you can have everything you need in the kit except the tank, which makes shipping and custom fees much less for you. Then all you need is to purchase a 4.5 or 10 gallon tank locally to have the complete pump control package.