A valve connected to the vent line labeled "C" in the illustration should be opened __________. See illustration GS-0163.

Question

Accepted Answer

when filling the tank or to insure that the tank is not pressurized prior to entering for cleaning and inspection

Answer

when flushing the pressure tank with firemain water

Answer

by a pressure relief valve when the pressure exceeds the preset level, usually 42 psig (2.98 kg/cm²)

Answer

at all times, except when the tank is pressurized for discharging or aerating the bulk material

🔍 Key Concepts