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.
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.
Monnex Powders are specialised ‘BCE’ Powder, with a greater ability to extinguish Liquid, Gas and Electrical fires than standard.
The types of risk the 9Kg M28 Dry Powder (D Class) Fire Extinguisher would cover is metal fires involving Sodium, Magnesium and Aluminum.
This particular Fire Extinguisher will not cover you for Lithium.
The types of risk the 9Kg L2 Dry Powder Fire Extinguisher would cover is metal fires involving Lithium.