Is it possible to convert a fire extinguisher from one type to another?

A fire extinguisher is designed specifically to combat certain types of fires based on its classification, such as A, B, C, D, or K. Each type of extinguisher contains different agents suitable for different fire classes. For instance, a Type B extinguisher is filled with foam or dry chemical designed for flammable liquids, while a Type A extinguisher contains water or an agent for ordinary combustible materials like wood and paper.

Converting a fire extinguisher from one type to another is not feasible because each type is engineered with specific materials and properties tailored to effectively extinguish particular fire hazards. The construction, pressure rating, and extinguishing agents cannot be adjusted or exchanged without compromising safety and effectiveness. Therefore, the principle of fire extinguisher design dictates that they are singular in their functionality and do not allow for conversion between types. This is critical for maintaining safety standards in emergency situations where the wrong type of extinguisher could exacerbate a fire.