Class A Foam is specially formulated to make water more effective for firefighting. The surfactants in Class A foam significantly reduce water’s surface tension and, when mixed with air, create a superior foam blanket that surrounds fuels with a thick layer of water. This creates a barrier between the fuel and the fire, knocking down the fire faster than water alone, and allowing fire fighters to see the areas of application. Making the water more effective reduces the amount of water needed to extinguish the fire, reduces water damage and increases fire fighter safety through quicker knockdown and reduced mop-up/overhaul requirements.
WD881 is highly effective for fighting Class A fires when mixed with water at use rates of 0.1% to 1.0%. It has proven effectiveness in many applications including Compressed Air Foam Systems (CAFS), structural firefighting, forest fire suppression and prescribed burning, mine fires, industrial Class A fires, and for extinguishing hydrocarbon spill fires.
Phos-Chek WD881 is the most concentrated Class A foam product available today. Other products contain significantly more water in the concentrate. This extra water means higher use rates will be required to achieve expected results.
WD881 does not contain fluorinated surfactants such as PFOS/PFOA. Fluorinated surfactants are used in Class B foam concentrates and are necessary to form a film on flammable liquid fires. Class B foams should not be used on Class A fires. Never mix Class A and Class B foam concentrates.
Class B foam is required for protection from and suppression of flammable liquid fires. Typical applications include chemical and petrochemcial plants, refineries, aircraft rescue and fire fighting, LPG/LNG terminals, etc.Explore
Quickly extinguishes and prevents reignition for flammable liquid pool fires. Ideal for storage tanks, railcars, automobile gas tanks, or any fire involving flammable liquid storage.Explore
Liquid fire extinguishers are highly effective and cause far less peripheral damage than powder extinguishers. Class a or Class B additives significantly improve their effectiveness.Explore
Fire suppressant gel is thickened water typically used to coat a structure to protect it from impinging fire. Gel wraps a “blanket of water” around any structure, keeping it cool and preventing ignition from nearby fires.Explore