oftalmos;1326609; said:But how you are going to achieve that?...... the water of the compartment that you are talking about should be the same water that is in the sump...
I mean the water that gets to te compartment arrives from where?
You need water to close the floating valve...but with you example if there is no electric power then the sump is going to overflow because the floating valve is not closing.....because the water is going to the sump not to the compartment....unless of course you connect a pipe between the sump and the compartment....but I think is the same....in that case what you are doing is just expanding the sump.....
The water that arrives in the overflow float compartment would come from the sump. Normally these compartments are dry. There would be a wall between the sump and the float compartment that is two inches lower than the outside wall of the sump. Normal operating level would be maybe 1" below the wall (3" below outside walls of the sump). If power is lost water continues to flow into the sump compartments, raises, spills over the walls into the float compartments, rises, lifts the floats and closes the valves. As I was typing this I realized there needs to be a mechanism to drain the float compartments once they are full. Otherwise when power is restored the sump will be pumped dry and the pump starved for water because the drain valves from the tank will be closed. Again, I love how you solved the problem. I'm just thinking out loud on how it could be expanded upon to make it a little easier to maintain equilibrium and maximize filtering efficiency.