Is it dangerous if there is rust on the fire extinguisher body?

Fire extinguishers with rust on the body can be dangerous, depending on the severity and area of ​​rust. The reasons are as follows:
Potential hazards of rust on a fire extinguisher:

1.  Risk of leakage: Rust on the surface of a fire extinguisher can weaken the metal. In cases of severe corrosion, it can cause a hole to leak, which will reduce the pressure inside the tank, causing the extinguishing agent inside the tank to be ineffective or the tank to leak out.
2. . Reduced durability of the tank: Rust that has accumulated for a long time can weaken the structure of the tank. When rust reaches the inner layer of the metal, the tank may crack or be damaged when exposed to high pressure, which may cause the tank to explode if the internal pressure is too high.
3.  Reduced efficiency: Rust can cause valves and other components of the fire extinguisher to not work effectively, such as valves that may be stuck or the spray hoses may be corroded, making it impossible to use to extinguish a fire in an emergency.

• If rust occurs on the surface and can be easily scrubbed off, it can be cleaned and coated.
• If rust has spread deep into the metal of the tank, the tank should be inspected by a professional to see if the tank structure is still strong and safe.
  

• If rust occurs on the outer surface, you can use a wire brush to remove the rust and then apply a rust preventive coating. However, make sure that the surface of the tank is not severely corroded.

• If the rust is deep or has eaten into the metal of the tank, replacing the fire extinguisher is the safest option.

• Fire extinguishers should be stored in a dry, ventilated place, avoiding moisture and places with water seepage or high temperatures to prevent rust from forming.