Wet Chemical Extinguishers

Wet chemical fire extinguishers are designed for use on deep fat fryer and cooking oil fires (Class F) and also offer protection against general Class A fires (such as paper, wood, straw, textiles and coal etc.). These are the only extinguishers that can combat fat fires. The small and compact 2ltr wet chemical extinguishers are perfect for use in small commerical kitchens as well as mobile catering units and domestic kitchens.

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Wet Chemical (F-Class) Fire Extinguisher Information

Wet chemical f-class fire extinguishers are the only fire extinguishers that will safely extinguish fire involving cooking oils and fats and they are often used in a wide range of commercial kitchens, chip shops and catering vans. Wet chemical extinguishers are filled with a special type of foam that works by covering and smothering the fire therefore cutting off the supply of air and safely extinguishing the fire. Wet chemical f-class fire extinguishers can be used from between 1 and 2 metres away from the fire helping to ensure the safety of the fire extinguisher operator. The larger 6ltr wet chemical extinguishers are ideal for use in larger kitchens and can be operated from a safe distance of around 3-4 metres away from the fire.

Wet chemical fire extinguishers supplied by Firemart are safe for inadvertent use on live electrical equipment up to 1,000 volts at a distance of 1 metre meaning added fire protection for users if electrical equipment is also present in the kitchen environment (such as ovens, electrical sockets, light fittings, microwave ovens etc).

The wet chemical f-class fire extinguishers supplied by Firemart are stored pressure extinguishers meaning that they are supplied ready filled and pressurised. Our wet chemical fire extinguishers are also supplied complete with a wall mounting bracket making them ready to quickly wall mount. They also feature an easy to read pressure gauge which helps to ensure that the extinguisher is safe for use: if it is pressurised and ready for use, the pressure gauge will be in the green zone. If it has lost pressure, the reading will be in the red zone and requires remedial attention. Some of our wet chemical fire extinguisher models also offer a high B fire rating meaning that they are often known as ABF fire extinguishers and are the only foam fire extinguishers that will extinguish three fire risks: A, B and F

Add enhanced fire safety protection by using a Firemart fire blanket within the kitchen environment. See our comprehensive fire blanket range for more information!

Some wet chemical fire extinguishers are suitable for fires involving solid combustible materials known as Class A fires (wood, paper, straw, coal and textiles), flammable liquids known as Class B fires (oils, fats, solvents and petrol) and this will be indicated on the fire extinguisher label.

How will I recognise a wet chemical fire extinguisher? Wet chemical fire extinguishers all feature a usage label that will include a bright yellow strip which indicates the fire extinguisher type and usage.

You will also want to include a wet chemical fire extinguisher id sign above the fire extinguisher.

How do wet chemical fire extinguishers work?

wet chemical f-class fire extinguishers release a foam when they are operated. The foam forms a layer over the top of the fire effectively sealing the fire and removing the oxygen from the fire. Without the oxygen, the fire is no longer able to burn and will be extinguished.

Wet chemical fire extinguishers are often called ‘F’ class fire extinguishers and they have an ‘F’ class fire rating which is showing as a number followed by the letter F. The letter indicates that the fire extinguisher can be used on Class F (wet chemical fires). For example, the letter and number combination 75F means that the fire extinguisher is suitable for up to 75 litres of oil. The larger the number, the larger the fire that it will extinguish.

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