... foam trolleyPY series Half-fixed (Portable) Foam-agent Fire Extinguisher This kind of fire extinguisher consists of the foam maker (foam gun ... ), foam proportioner (foam proportioning unit), fire hose, foam concnetrate storage tank, foam monitor / nozzle and the ... / warehouses as well as other places where there is a fire hazard.Products details-AFFF:a.3% b.6%PARTS:BRASS VALVE ...