... FM200,clean-air,halon,Co2 Foam-agent Fire-extinguishing system Foam-agent fire extinguishing system consists of pressured water source, foam ... proportioner is an important part of foam agent fire extinguishing system. Electromotor, hydraoturbine or other source of power ... extinguishment. Therefore, it is widely used in large fire extinguishing projects, such as, zone of tanks, oilfield and offshore ...