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Water Fire Extinguishers

Need help? Need help? What should you use Water Fire Extinguishers on? UK’s Widest Range of Top Quality Water Fire Extinguishers

Water fire extinguishers, also known as ‘Class A’ extinguishers, were one of the first types of fire extinguishers developed, and as such are commonly found in a wide variety of settings. Although these are the most economical extinguishers available, standard water extinguishers are more limited in their application and are typically only suitable for fires involving flammable solids.

As such, they are most often found in non-commercial settings or in commercial settings with a low risk of liquid or chemical fires. They are easy to use and can work rapidly and effectively if used on the appropriate material.

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What are Water Fire Exitinguishers Used For?

Water fire extinguishers are best used on fires involving flammable solids, such as wood, paper, textiles or other combustible materials. As such, whilst they are less common in commercial kitchen settings, they will commonly be found in areas where large quantities of combustible materials are stored, such as warehouses, textile factories or construction sites.

Smaller to medium sized water fire extinguishers may also be found in domestic settings, particularly in spaces with a fireplace or any type of open fire and are also usually found in offices. As water fire extinguishers do not usually contain any chemical solutions, they have a much lower environmental impact compared to other types of extinguishers.
When displaying your extinguisher it is a legal requirement to have adequate identification signage clearly showing what type the extinguisher is, we supply a range of Water Fire Extinguisher Kits that come with all the necessary signage to ensure you comply with health and safety regulations in the workplace.

When not to use a water fire extinguisher?

Water fire extinguishers have a somewhat limited range of uses and it is just as important to know when not to use them, as such they should never be used on fires involving the following materials:

  • Electrical Fires: Using water fire extinguishers on electrical fires is highly dangerous and could result in electrocution for the user or those in the surrounding area. To fight these fires, use CO2 Fire Extinguishers.

  • Cooking Oil Fires: Water reacts poorly with flaming oils, causing them to spit and splash. Using water on these types of fires is highly dangerous for anyone in the immediate area and can cause the fire to spread quickly. Store a Fire Blanket nearby or in the kitchen to ensure these fires canbe tackled when they occur.

  • Flammable Liquids and Gases: Water based fire extinguishers should never be used on fires involving flammable liquids, such as petrol and paint, or on flammable gases, such as butane or other gases.


If you think you could be at risk of any fires involving these materials, it is advisable to combine a water fire extinguisher with a separate CO2 extinguisher.

How does a water fire extinguisher work?

Water fire extinguishers are essentially large tanks of water that have been compressed with air. When the handle is pulled, they produce a high-pressure jet of water which saturates the flaming material. This produces an instant cooling effect and deprives the fire of the heat and oxygen needed to burn. Water fire extinguishers generally have a long, flexible hose, with a narrow nozzle which allows the stream of water to be accurately directed to the base of the fire. Once saturated, the affected material cannot reignite.

How do you use a water fire extinguisher?

Water fire extinguishers are very simple to operate. Standing a good distance away from the fire, the user should simply remove the safety pin, squeeze the handle firmly, and point the nozzle at the base of the fire, continuing to spray until the affected area is entirely covered in water and the fire is completely out.

How to identify water fire extinguishers


Water fire extinguishers are identifiable by a large white label on them stating ‘Water’, and will generally have a medium length, flexible hose with a small nozzle.

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