... vehicle and ship. Company office B). Description --- 4kg dry powder fire extinguisher (stretching cylinder) Type:4KGItem No.:KTX-15Out-diameter:Φ ... valve,Sucker,Spray tube,Pressure gage,PVC fire hose, Hose reel,Plastic rack etc. Manufactory 2 D). How to use-4kg dry powder fire ... 3. Working pressure: 18Bar; 4. Test Pressure: 27Bar;Portable Dry Powder fire extinguisher1kg, 2kg, 3kg, 4kg,5, 6kg, 8kg, 9kg ...