Class D fires are caused by burning metals that combust easily on contact with air, such as magnesium and lithium. Such specialised fires require a specialised metal powder fire extinguisher to deal with them, and will be required in scientific labs or where manufacturing processes involve the risk of metal fires. For example, aluminium dust or swarf can catch fire, so any process involving cutting, drilling or milling aluminium holds potential risk.

Manufactured by Thomas Glover (the sister company of Chubb Fire), our 9kg M28 powder fire extinguisher is especially designed to fight Class D fires (but not those involving lithium) and our 9kg L2 fire extinguisher is designed to tackle lithium metal fires, or any Class D fire.

The special low velocity applicator lance prevents you spreading the burning metal powder or swarf around your lab or workshop as it slows down the delivery of powder to allow the user to carefully aim where it is needed.

metals, lithium magnesium