A proportioner having a body portion that defines a fluid passage for transporting a fire protection fluid, and a foam passage for transporting a foam concentrate. The proportioner also includes a restrictor assembly having a restrictor disk and an orifice plate. The proportioner further includes a clapper assembly configured to control a flow of the foam concentrate through the foam passage by varying a distance between the restrictor disk and the orifice plate. The clapper assembly is configured to move the restrictor disk so as to maintain a foam concentrate percentage in the fire protection solution within a target concentration that provides effective fire protection for flows of the fire protection solution within a target flow ratio in a range of 10 to 70, for a foam concentrate viscosity that is greater than 1300 mPas.

An aqueous fire-fighting composition includes a sugar component, anionic surfactant, zwitterionic surfactant, organic solvent and polysaccharide thickener is provided. The composition does not contain any amine oxide or nonionic surfactants and is substantially free of fluorinated compounds. Methods of using the composition to form a firefighting foam and fighting a fire with the firefighting foam are also provided.

Environmentally-clean biodegradable water-based biochemical concentrates for producing fire-inhibiting and fire-extinguishing liquids and foams for fighting Class A and/or B fires. The concentrates are formulated using generally safe food-grade chemicals, for foaming agents, surfactants and dispersants, and fire inhibiting extinguishing agents, without the use of phosphates and ammonia compounds. Automated proportioning and mixing devices and systems can be used to mix the biochemical concentrates with proportioned quantities of pressurized water so as to produce fire inhibiting and extinguishing water streams, as well as finished firefighting foam materials, to both inhibit and extinguish fire involving Class A and/or B fuels.

Disclosed is a mixture comprising the compound trans-1,1,1,4,4,4-hexafluoro-2-butene and at least one additional compound selected from the group consisting of HFOs, HFCs, HFEs, CFCs, CO2, olefins, organic acids, alcohols, hydrocarbons, ethers, aldehydes, ketones, and others such as methyl formate, formic acid, trans-1,2 dichloroethylene, carbon dioxide, cis-HFO-1234ze+HFO-1225yez; mixtures of these plus water; mixtures of these plus CO2; mixtures of these trans 1,2-dichloroethylene (DCE); mixtures of these plus methyl formate; mixtures with cis-HFO-1234ze+CO2; mixtures with cis-HFO-1234ze+HFO-1225yez+CO2; and mixtures with cis-HFO-1234ze+HFC-245fa. Also disclosed are methods of using and products of using the above compositions as blowing agents, solvents, heat transfer compositions, aerosol propellant compositions, fire extinguishing and suppressant compositions.

Provided are fire-fighting foam concentrate compositions incorporating multiple dye indicator agents, fire-fighting foams formed from said compositions, and to methods for evaluating fire-fighting foam concentrates. The compositions are useful as a complex anti-counterfeiting system and also allow for the differentiation of different types of authentic concentrates.

Novel organosiloxane compounds are disclosed that are useful in firefighting foams. Methods of making and using the organosiloxane compounds and foams are also described.

Provided is a foamed dust composition and a method of using the foamed dust composition. The foamed dust composition contains an aqueous foam comprising a foaming agent, a foam stabilizer, water, and a rock dust. The foamed dust composition is sprayed onto coal mine surfaces to prevent coal dust explosion in the event of a fire.

An apparatus for automatically generating a fire-fighting foam at elevated temperatures is provided. The apparatus includes a container sized to hold at least one battery. Water is stored within the container. One or more cartridges made, at least in part, of a temperature-dependent breakdown material are stored within the container. The one or more cartridges contain a foaming agent. Heat generated by a failing battery causes the temperature-dependent breakdown material to fail such that the foaming agent is released from at least one cartridge to mix with the water stored within the container.

Disclosed is a mixture comprising the compound Z-1-chloro-2,3,3,3-tetrafluoroprop-1-ene and at least one additional compound selected from the group consisting ofHFOs, HFCs, HFEs, CFCs, CO.sub.2, olefins, organic acids, alcohols, hydrocarbons, ethers, aldehydes, ketones, and others such as methyl formate, formic acid, trans-1,2 dichloroethylene, carbon dioxide, cis-HFO-1234ze+HFO-1225yez; mixtures of these plus water; mixtures of these plus CO.sub.2; mixtures of these trans 1,2-dichloroethylene (DCE); mixtures of these plus methyl formate; mixtures with cis-HFO-1234ze+CO.sub.2; mixtures with cis-HFO-1234ze+HFO-1225yez+CO.sub.2; mixtures with cis-HFO-1234ze+HFC-245fa; and azeotrope or azeotrope-like compositions. Also disclosed are methods of using the compositions as blowing agents, solvents, heat transfer compositions, aerosol propellant compositions, fire extinguishing and suppressant compositions.

A method of proportioning a finished foam at or near a hazard comprising proportioning and delivering a first finished foam to the hazard, determining if the first finished foam extinguishes or suppresses the hazard, if not, selecting an amount of a fluorinated additive, and proportioning a foam solution including the selected amount of the fluorinated additive to form a fluorinated finished foam. A foam injection system is also disclosed.