50 PSI constant will fill a cattle trough much faster than if the pump was cycling and varying the pressure between 40 and 60. And if you need more than 50 PSI, then turn up the CSV and pressure switch. I have systems working as high as 400 PSI. So you can have as much pressure as you want, you just have to turn up the pressure. I don't know what you are talking about with "two regulators"? You only need one CSV to make it work properly. With a CSV and a small tank the pump will cycle every time you use water, but will not cycle while water is being used. This is a big difference whether you can see it or not. The pump knows the difference as it will last longer, and the customer knows the difference because of the steady constant pressure. Trying another analogy. If there was a fuel additive that only cost a dollar and could make any car get 100 mpg, do you think the guy at the gas station would tell you about it? Not likely, he makes his living selling fuel. He will probably even try to make you think it will hurt the car engine or destroy the environment to keep you from trying it. In the same way pump guys will try to talk you out of a CSV, because it cuts into their business. No! Homeowners will have to find out about disruptive products like that fuel additive and a CSV on their own. Thank goodness for the Internet and these forums. Homeowners would never hear about a CSV if they waited for their pump man or plumber to tell them about it. They won't tell homeowners about things that save them money if it cuts into their business like a CSV does.