RBE17;1324270; said:
I was just re-reading your portion on the key valve. If you would reduce the size of the pipe that recirculates to the sump and put less restriction in your return you would get more flow to the tank and wouldn't have to throttle the key valve so much. Your recirculating circuit is the path of least resistance and that's why you have to throttle it back so much. Also, another way to do it is have larger drains from the tank to the sump so there would be more flow into the sump. I know you can't do that now, but if you ever tear it down for an upgrade maybe it would be possible. Again, this tank is gorgeous and there are some very ingenious ideas here. Kudos!!!!
Later,
Steve.
The most important goal is to achieve the balance….you can use larger drains but the important thing is that even if you put larger drains the goal is that the floating valves keeps completely open…remember that a floating valve is completely open when the ball is all down….so (you have to keep the surface of the water in the sump in certain level to really take advantage of the bigger drains)….because if the ball is not all down …then there is no purpose of the bigger drains because you are reducing the waterfall…but if you are going to use bigger drains with the floating valves all down….then you need a powerfull pump…because if you dont have it… then the floating valves are not going to be completely open because the water that goes to the tank will be less than the water that goes to the sump by gravity…
In the article I mention that the key valve must be almost closed because in my case the less water to recirculate to the sump the better…because that means that the floating balls are all down….and open……and that means that most of the water is returning to the tank…the goal is to keep the floating valves full open…and avoid the last chamber from getting empty….
It is important to open and close the key valve and see how the water of the last chamber is doing and mark the ideal position of the key valve to balance everything…
In my case with the 3 drains I have a waterfall of 4.5 inches so it is more than enough for the size of the tank….I think…..
Greetings….