Traditional extinguishers are not only ineffective but dangerous to use against metal fires. For metal fires, the class D fire extinguisher is used instead. Effective against lithium, sodium, magnesium ,calcium ,zinc and aluminium fires when in the form of powder or swarf.
To prevent splashing of the molten metal, these extinguishers are equipped with a low velocity applicator cup 1.5m in length. This provides a degree of safety to the person operating the extinguishers.
The unique lance applicator is designed to allow the powder to fall gently over the fire to prevent burning material from spreading.