A Class K fire extinguisher is a specialized wet chemical extinguisher engineered to combat fires involving cooking oils, fats, and grease — typically found in commercial kitchens, restaurants, hotels, and food-service areas. Unlike general-purpose extinguishers, the wet chemical agent in a Class K extinguisher reacts with hot cooking media to form a soapy layer, cooling the fuel and helping prevent re-ignition while minimizing splashing of burning oil.

Constructed with a robust stainless or mild steel cylinder and fitted with an easy-to-operate valve and discharge nozzle, Class K extinguishers are designed for quick response and safe deployment in high-heat kitchen environments. They are essential in fire safety plans for kitchens where deep fryers, grills, and other high-temperature cooking equipment are used.

In Nepal, Class K (wet chemical) fire extinguishers are commonly available in approximately 3 litre, 6 litre, and 9 litre sizes, accommodating various kitchen sizes and risk levels from smaller residential kitchens to larger commercial food-service operations.

Ideal for restaurant kitchens, hotel kitchens, institutional cafeterias, and domestic cooking areas, Class K extinguishers help ensure compliance with fire safety best practices and provide dependable performance when dealing with cooking oil and grease fires.