... ,clean-air,halon,Co2 Foam-agent Fire-extinguishing system Foam-agent fire extinguishing system consists of pressured water source, foam-stored tank ... This system is widely used in petrochemical industry, tanks zone, oilfield, offshore oil plateform in case of fire caused by ... is an important part of foam agent fire extinguishing system. Electromotor, hydraoturbine or other source of power is used to ...