An aqueous fire-fighting composition includes a surfactant component that includes an anionic surfactant, a zwitterionic surfactant, a nonionic surfactant, or a mixture of any two or more thereof, and a suspension agent comprising microfibrous cellulose. The suspension agent may include a water-soluble oligosaccharide and/or polysaccharide co-agent together with the microfibrous cellulose. The fire-fighting composition may also include one or more of a sugar component, organic solvent and a polysaccharide thickener, and be substantially free of fluorinated additives.

Systems and compositions for suppressing and extinguishing several classes of fire, e.g. Class D, fires are disclosed. The composition includes some form of powdered Aloe vera, a bio-surfactant, a thickening agent, and a diol. The composition may be mixed with paint to coat a structure thus protecting the structure from fire. The composition may also be mixed with epoxy resin for coating a structure also for fire protection. The composition may also be in the form of a gel in canisters for extinguishing fire.

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.

A system for explosively applying a fire-fighting foam is provided. The system includes a thermoelectric generator that is attached to a battery heat source. A temperature differential across the thermoelectric generator generates an electrical current having a temperature-dependent voltage. A detonator circuit is electrically connected to the thermoelectric generator. The detonator circuit measures the voltage of the electrical current. An explosive foam applicator is communicatively connected to the detonator circuit and includes a trigger mechanism that detonates a propelling charge in response to receiving a signal from the detonator circuit when the detonator circuit determines that the electrical current corresponds to temperature that is greater than or equal to a threshold temperature. The explosive foam applicator is oriented such that detonating the propelling the charge causes the explosive foam applicator to apply a foam to the battery heat source.

A firefighting composition for use in onboard firefighting systems of heavy industrial equipment, such as heavy vehicles and other types of heavy equipment used in construction, forestry, mining, and other similar industries, includes aqueous liquids that include (a) a sodium and/or potassium salt of an organic acid; (b) one or more of an alkylpolyglycoside surfactant, an alkyl sulfate anionic surfactant, an alkyliminodialkylcarboxylate surfactant and a zwitterionic surfactant; (c) an acetylenic diol derivative surfactant and/or a siloxane-based surfactant; and (d) alkylene glycol and/or glycerol.

The present invention discloses a device for testing control of polymorphic foam on flowing fire, comprising a test bench, a combustible liquid injecting mechanism and a polymorphic foam spraying mechanism. The combustible liquid injecting mechanism and the polymorphic foam spraying mechanism are relatively arranged on the test bench. The combustible liquid injecting mechanism can spray combustible liquid to the test bench. The polymorphic foam spraying mechanism can spray polymorphic foam to the test bench, and the spraying direction of the polymorphic foam is relative to the spraying direction of the combustible liquid. The present invention can be used for testing and observing cut-off and control effects of polymorphic foam on combustible liquid flowing fire.

The present invention relates to compositions for use in refrigeration, air-conditioning, and heat pump systems wherein the composition comprises a fluoroolefin and at least one other component. The compositions of the present invention are useful in processes for producing cooling or heat, as heat transfer fluids, foam blowing agents, aerosol propellants, and fire suppression and fire extinguishing agents.

A firefighting foam preservative composition and a method of making the firefighting foam preservative composition are provided. The firefighting foam preservative composition includes a suspension system containing water and at least one suspension agent. The firefighting foam preservative composition also includes a first polysaccharide that is soluble in the suspension system; and a second polysaccharide that is insoluble in the suspension system, but soluble in water alone. Methods of using the firefighting foam preservative composition to produce a firefighting foam and using the firefighting foam to secure a hazard by extinguishing fire and/or suppressing flammable vapors are also provided.

A proportioner having a body portion that defines a foam passage and a fluid passage. The proportioner also includes a restrictor assembly having a restrictor disk and an orifice plate having an opening for receiving the restrictor disk. The proportioner can further include a rod member connected to the restrictor disk and a clapper assembly connected to the rod member via a sliding interface. The clapper assembly can be configured to control a flow of the foam concentrate through the foam passage in proportion to a flow of the fire protection fluid through the fluid passage by moving the rod member to vary the distance between the restrictor disk and the orifice plate. The sliding interface can be disposed between a first guide and a second guide, and at least a portion of the restrictor disk is deposed in the opening.

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 foam concentrate mixes with the fire protection fluid to form a fire protection solution. The proportioner also includes a restrictor assembly having a restrictor disk and an orifice plate. The orifice plate has an opening for receiving the restrictor disk. The restrictor disk and opening are configured to form an annulus between an outer surface of the restrictor disk and an inner surface of the opening when at least a portion of the restrictor disk is disposed within the opening and the restrictor disk is spaced from the orifice plate. The restrictor assembly is configured to maintain the annulus for a full travel range of the restrictor disk.