Portable - Stored Pressure Type - Mechanical Foam AR-AFFF
|Fire Rating||4A 233B|
|Working Temperature °C||+5 °C to +60 °C|
|Burst Pressure||55/80 bar min., 110 bar (actual) approx|
|Cylinder Testing Pressure||35 bar for 30 sec.|
|Operating Pressure||12 bar|
|Min. Effective Discharge Time||15 sec.|
|Charge||Water with AR-AFFF 6X6%|
Mechanical foam (AR-AFFF) fire extinguishers are suitable on water soluble flammable liquids like alcohols, ketones, amines, esters, ethers, aldehydes etc. in pure form as well as in mixture with hydrocarbons. These extinguishers can be used on both Class A (ordinary solids) and Class B (flammable liquids) fires containing materials such as wood, paper and other solid combustibles as well as flammable liquids including petrol and spirits. Mechanical Foam type extinguishers should never be used on electrical fires, flammable gases, cooking fats & oils.
Operating principle is similar as other foam type extinguisher but in case of polar solvents foam is produced by mixing foam concentrate with water and applied through aerating nozzles on alcoholic fires, after which a thick foam film is formed on the surface of the fuel blocking external air, thereby extinguishing the fire.
These fire extinguishers find special use in Hotels, Manufacturing Industries, Beverage Industries, Petrol Pumps, Water soluble Solvent Storage Areas e.g. Isopropyl Alcohols, Warehouses, CNG/PNG/LPG storage Areas, Laboratories, Printing Shops, Paint Dipping Operations, Oil Change Facilities. Mechanical foam fire extinguishers carry a yellow colour band which is clear and easy to see in the event of any emergency.