... ammonium phosphate. The driving gas——nitrogen, is filled in a full-sealed container. When there is a fire, the extinguishing agent, driven by ... 2L,3L,4L,6L,9L 7> Extinguisher accessory Extinguisher cylinder,Co2 fire extinguisher cylinder, Powder, Fire escape mask, Fire blanket, Fire ... D). How to use-4kg dry powder fire extinguisher (stretching cylinder) Pull the Pin at the top of the extinguisher. ...