Class K Fires

Class K fires involve combustible cooking fluid(s) and wet chemical fires

The following types of materials which would burn in a Class K fire are:
• Fats
• Oils
• Grease

Vegetable oils used in food preparation can require heating rates with higher temperature than normal food preparing. Commercial and industrial related cooking currently requires a Class K fire extinguisher is installed in every restaurant kitchen. Should a fire happen in a cooking medium such as a deep fryer or other cooking apparatus using high temperature fats or oils, a standard range hood extinguisher or a Class B fire extinguisher may be insufficient for containment. Class K fire extinguishers are used ONLY after a built-in hood suppression system has been activated. Class K fire extinguishers are not a necessity when no built-in hood suppression system exists.

Class K fire extinguishers may contain wet or dry chemical agents. An extinguisher labeled as Class K can spray a wet, fine chemical patina, or mist, or this type of extinguisher can contain potassium bicarbonate, a dry chemical agent. Use a Class K fire extinguisher after the cooking apparatus or electrical appliance has been switched off. The chemical agents in Class K extinguishers can become electrically conductive.

Distance Class K fire extinguishers have a travel distance of thirty feet maximum.

Dependable Fire Equipment Inc. 100 LeBaron Waukegan, IL 60085

Phone: 847 • 662 • 8400
Fax: 847 • 662 • 8420


Certificate No. 8036480-FE

nfpamember logo

nafed member logo