Which device warns that the liquid is above the pump level?
(a) High level alarm
(b) Check valve
(c) Union
(d) Pump lift chain
The question was posed to me in an online interview.
I'd like to ask this question from Inverted Siphon, Storm Regulator and Sewage Pumping in division Construction of Sewers, Sewer Appurtenances and Sewage Pumping of Environmental Engineering