What does brine overflow mean in practice?
The emergency nozzle drains water when the level rises above the allowable height due to a filling fault.
When does it matter?
Does not replace float control and should operate by gravity; connection to a pressurized drain may result in sewage backflow.
Which solutions are related to it?
The pipe is run with a slope to a safe drain with an air gap and its patency is periodically checked.