RAPID ACTION AFFF Foam Type (Stored Pressure) Fire Extinguisher 20 Liter. Capacity as per IS: 16018 operating temperature (+5) ºC to (+60) ºC for Class 20A & 233B type of fire filled with AFFF Foam Complete in all respect & 'A' & 'B' class fires - inflammable liquids, gaseous fires like L.P.G. and acetylene. RAPID ACTION AFFF foam based fire extinguishers are the most widely used fire extinguishers, filled with AFFF (Aqueous film forming foam) foam based, Suitable for all types of fire i.e. A & B started fire effectively extinguish by interrupting the chemical reaction of a fire triangle. Suitable for - apartments / crude oil ships / offices / oil shops / commercial, residential ; industrial buildings Purpose.