Foam Fire Extinguishers
AFFF foam fire extinguishers (and some water extinguishers with additives) contain a range of substances which are gradually being discontinued by law. This could mean that AFFF foam extinguishers purchased today would have to be replaced within the next few years, possibly before the end of their useful lifespan. Safelincs, after careful consideration, has therefore retired the majority of their range of AFFF foam extinguishers and is offering suitable AFFF foam-replacement extinguishers.
To help support customers, all discontinued models shown below present a link to a suitable replacement. Most AFFF foam extinguishers in the past were installed in offices, public buildings, and homes. Our range of Class A rated water mist extinguishers are the perfect replacement for these locations. For small Class B risks, e.g. indoor storage of solvents, please select from our range of Class A and B-rated water mist extinguishers. All of our replacement models are suitable and certified for use on live electricity of up to 1000 Volts (at 1m safety distance). For large Class B risks, such as petrol tanks etc, please choose from our powder extinguisher range
Foam Fire Extinguisher is a type of fire extinguisher that suppress the fire by cooling down the flames. Foam Fire Extinguisher covers the flames with a thick blanket of foam to suppress the flames. The blanket of foam cuts the supply of oxygen and cools down the flames. The water droplets in the foam cool down the burning substance and extinguish the fire. Foam Fire Extinguisher has a cream label. During the last few years, various transformations occur in the texture of foam used to extinguish the fire. In the original foam fire extinguisher, the texture of the foam was very thick. The foam was very smelly because the foam was made from animal protein. But now foam is made from more advanced material and is more effective than the previous one.
Foam fire extinguishers are available at affordable prices and are easy to use. They are more flexible. They come up with a full package of nozzles, valves, and steel cylinders. They can be refilled when expired.
Foam type fire extinguisher is suitable for Class A and Class B fires. Class B fire is caused by flammable liquids such as petrol or diesel. They are mostly used to extinguish fire due to flammable liquids. Foam fire extinguishers can be purchased at very affordable rates and are easy to use. they are supplied with a full package of nozzles, valves, and steel cylinder. The nozzles are non-conductors so they can be used for the equipment near live electrical installations. When the fire extinguisher expires it requires refilling.
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TROLLEY FOAM FIRE EXTINGUISHER:
Trolley Foam Fire Extinguisher is the first type of foam type fire extinguisher. The foam type fire extinguisher on the trolley is moveable. When the fire cannot be dealt with a portable fire extinguisher, we use a trolley foam fire extinguisher to suppress the fire. This type of foam fire extinguisher requires a supply of water (the minimum water supply required is 180 LPM at 5 bar). Trolley Foam Fire Extinguishers are available in different sizes. They are available in 25kg, 50kg, and 100kg cylinders. A trolley comes up with this fire extinguisher which enables easy mobility. Trolley foam fire extinguisher requires effective protection when it is used to extinguish the fire that spread out on the large area.
The features of the trolley area as following:
These are some of the points that should keep in mind before the extinguisher is discharged.
Portable Foam Fire Extinguisher:
Portable fire extinguishers discharge the extinguishing agent that suppresses the fire by covering the flames with a thick layer of foam. The foam cuts off the supply of oxygen and extinguishes the fire. When there is a lack of oxygen, it stops the chemical reaction and the fire cannot continue to burn. It consists of two containers. The outer container contains water. The central container contains a foam solution and carbon dioxide charge. When we compress the handle of the extinguisher, the agent is discharged from the nozzle. Hose clips, squeeze for action handle and carrying handle are made up of stainless steel. Stainless steel prevents these parts from corrosion, starches, and then help in the maintenance. Portable foam fire extinguishers are reliable. They are suitable for use when they are readily accessible so that they can be used immediately. The foam is basically a blend of perfluorinated and hydrocarbon surfactants. It is an ideal Class B fire. It is best suited when the fire is caused by flammable liquids such as petrol. Portable fire extinguishers require regular checking.
These are some of the points that should be kept in mind before the extinguisher is discharged.
Foam fire extinguishers have undergone a major transformation over the years. They originally came with a thick and gloopy texture. The foams were rather smelly due to the use of high animal protein content. Conversely, modern Aqueous Film Forming Foam (AFFF) is more evolved and advanced. It provides a more effective solution when it comes to fire extinguishing.
This type of extinguisher is typically indicated by a blue band above the instructions. It is designed to extinguish class A and B fires. Class A encompasses fires triggered or involving a number of materials, including rubber, different types of plastics, textiles, paper, and wood. On the other hand, class B covers flammable liquids. Foam extinguishers are available in different sizes to suit various applications and requirements.
How Foam Fire Extinguishers Work
A foam fire extinguisher puts out fires by covering the flames with a thick blanket of foam. In turn, this deprives the fire of the air supply, thus undermining its capacity to release flammable vapours. When directed towards flammable liquids, the foam allows the liquid to drain from it before forming an aqueous film. This creates ideal conditions for the effective suppression of fuel vapour and the sealing of the liquid surface.
Traces of water in the foam bolster the suppression by producing a cooling effect. However, these extinguishers are ineffective for dealing with fires involving deep fat fryers.
Aqueous Film-Forming Foam (AFFF) leverages the fire suppression power of hydrocarbon- and fluoro-surfactant technologies to provide superior firefighting capability. The foam also uses multiple mechanisms designed to ensure burn-back resistance. It also boasts outstanding wetting properties and can be used with other chemical agents like the purple-K dry compound to provide improved fire suppression performance.
Alcohol-resistant foams come with a polymer that provides a protective layer between the foam and the flame surface. This is aimed at counteracting foam breakdown, which is typically caused by the presence of alcohol in the blazing liquid. Alcohol-resistant foams are more effective in extinguishing blazes with oxygenates.
Expansion rates of foam
Low-expansion foams like Aqueous Film-Forming Foam (AFFF) are highly mobile allowing them to cover large areas. They also have low-viscosity properties and an expansion rate of less than 20.
The expansion ratio of medium-expansion firefighting foams ranges between 20 and 100.
High-expansion foams are well suited for use in enclosed spaces because they have the capacity to quick-fill the burning area. They have an expansion ratio that ranges between 200 and 1000.
Features Of Foam Extinguishers Foam extinguishers and electricity
The nozzle for these extinguishers is non-conductive, thus allowing users to operate the equipment close to (but not directly on) live electrical fixtures. Some of the quality standards used to determine the suitability of equipment for such applications, including the BS EN3 35,000V test as defined by BSEN3-7:2004.
Types of Foam Extinguishers
Synthetic foams are manufactured using synthetic surfactants to ensure better flow. This allows the extinguisher foam to achieve the knock-down effect much faster as it spreads above the hydrocarbon-based liquids. However, this variant can contaminate groundwater and has limited post-fire security. Aqueous film-forming foams (AFFF) and alcohol-resistant aqueous film-forming foams (AR-AFFF) fall under this category.
Unlike synthetic variants, protein foams generally flow and spread at a slower rate. Yet, they are more durable and heat-resistant. These foams are made of natural proteins and they are environmentally friendly thanks to their bio-degradable properties. Some of the foams that fall under this classification include:
Universal Fire Protection Offers Foam Fire Extinguisher which is more expensive than water, but more versatile. Used for Classes A & B fires. Foam spray extinguishers are not recommended for fires involving electricity but are safer than water if inadvertently sprayed onto live electrical apparatus. Though these are more flexible but costly than water fire extinguishers. You can use them on Class A & B fires but not on fires associated with electricity. They can be safer than water-based varieties if accidentally sprayed onto any operating electrical device.
Universal Fire Production provides a complete range of different kinds of fire extinguishers.
Universal fire Protection has a team of highly professional and technical persons who not only design and provide the best quality firefighting equipment but also provide a complete package of services for the maintenance and repairing of equipment.
Purchase Foam Fire Extinguishers today from universal Fire Protection CO Pvt. Feel free to contact us. We provide products at your doorsteps.
Where Can Foam Fire Extinguishers Be Used?
Some of the specific uses for a foam fire extinguisher include:
Where Can Foam Fire Extinguishers Not Be Used?
Foam ExtinguisherThis extinguisher type should not be used in any of the following scenarios:
How Do You Identify a Foam Fire Extinguisher?
There are several identifying factors to a foam fire extinguisher which are as follows:
What Are Foam Fire Extinguishers Also Known As?
A foam fire extinguisher can also be known by one of the following names:
How Do Foam Fire Extinguishers Work?
There are two principle ways, as follows:
Firstly: Being chiefly water-based, they have a similar effect to a water extinguisher in lowering the temperature to put the fire out
Secondly: Aqueous Film Forming Foam is included in the extinguisher (hence why they can often be referred to as AFFF from extinguishers)
What Are the Pros and Cons?
Several pros exist with the use of a foam fire extinguisher, these are listed as follows:
The main disadvantage with this extinguisher type is that it is dangerous if used on flammable gas fires or on cooking fires and causes damages to electrical appliances.
Who Needs Foam Fire Extinguishers?
Foam fire extinguishers are considered a good choice for general use and can be used in most business premises. They make an ideal choice for premises where there are multiple fire risks. Some examples of such premises include:
How Do You Use a Foam Fire Extinguisher?
The type of fire will determine how to use the extinguisher. However, all scenarios will have the same first step as follows:
FIRST STEP in all scenarios: Remove the safety pin to break the anti-tamper seal and stand at a safe distance.
For Flammable Liquid Fires:
If you need fire extinguisher servicing and maintenance, our accredited consultants will attend your sites at a time convenient to you. Contact us today to arrange a visit and decide on the future course of action.