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.

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 disposed in the opening.

An environmentally-clean aqueous-based fire extinguishing biochemical liquid concentrate to be mixed with a proportioned quantity of water, to produce a fire extinguishing water stream that produces good immediate extinguishing effects when applied to extinguish a burning or smoldering fire, and good long-term fire inhibiting effects when being proactively applied to protect combustible surfaces against the threat of fire. The environmentally-clean aqueous-based fire extinguishing biochemical liquid concentrate includes: a dispersing agent realized in the form of a quantity of water, for dispersing potassium ions dissolved in water; a fire inhibiting agent in the form of at least one alkali metal salt of a nonpolymeric saturated carboxylic acid, specifically potassium citrate, for providing potassium ions dispersed in the quantity of water when the potassium citrate is dissolved in the quantity of water; and a dispersing agent in the form of triethyl citrate, an ester of citric acid, for dispersing the potassium ions in the quantity of water, and lowering the surface tension of the liquid solution formed when the potassium citrate is dissolved in the quantity of water, forming of a fire extinguishing liquid solution, for mixing with a proportioned amount of water, to produce a fire extinguishing water stream having good immediate extinguishing effects when applied to extinguish a burning or smoldering fire, and good long-term fire inhibiting effects when applied proactively to protect combustible surfaces against the threat of fire ignition and flame spread of an incident fire.

A PFAS-free fire foam concentrate composition comprising water, a plant-based protein, a surfactant, an alcohol, and a builder. The bio-based content of the PFAS-free fire foam is preferably 80% by weight or greater. There is also disclosed a process to produce the PFAS-free fire foam concentrate composition, and the application of the fire foam concentrate onto a Class A fire or Class B fire.

The present specification discloses nontoxic fire extinguishing agent compositions, devices, methods and uses of same that are safe for both users and the environment. In particular examples, the nontoxic fire extinguishing agent comprises a microbial supernatant.

The present specification discloses nontoxic fire extinguishing agent compositions, devices, methods and uses of same that are safe for both users and the environment. In particular examples, the nontoxic fire extinguishing agent comprises a microbial supernatant.

A PFAS-free fire foam concentrate composition comprising water, a plant-based protein, a surfactant, an alcohol, and a builder. The bio-based content of the PFAS-free fire foam is preferably 80% by weight or greater. There is also disclosed a process to produce the PFAS-free fire foam concentrate composition, and the application of the fire foam concentrate onto a Class A fire or Class B fire.

The present invention relates to non-AFFF firefighting compositions and methods of making and using same. Applicants disclose firefighting compositions that comprise a wetting agent and a thickening agent. Such thickening agent captures and changes the chemical properties of fuel vapors as they permeate around and through the bubbles of a firefighting composition. Such firefighting compositions are particularly useful in fighting Class B fires.

An environmentally-clean aqueous-based fire extinguishing biochemical liquid concentrate to be mixed with a proportioned quantity of water, to produce a fire extinguishing water stream that produces good immediate extinguishing effects when applied to extinguish a burning or smoldering fire, and good long-term fire inhibiting effects when being proactively applied to protect combustible surfaces against the threat of fire. The environmentally-clean aqueous-based fire extinguishing biochemical liquid concentrate includes: a dispersing agent realized in the form of a quantity of water, for dispersing potassium ions dissolved in water; a fire inhibiting agent in the form of at least one alkali metal salt of a nonpolymeric saturated carboxylic acid, specifically potassium citrate, for providing potassium ions dispersed in the quantity of water when the potassium citrate is dissolved in the quantity of water; and a dispersing agent in the form of triethyl citrate, an ester of citric acid, for dispersing the potassium ions in the quantity of water, and lowering the surface tension of the liquid solution formed when the potassium citrate is dissolved in the quantity of water, forming of a fire extinguishing liquid solution, for mixing with a proportioned amount of water, to produce a fire extinguishing water stream having good immediate extinguishing effects when applied to extinguish a burning or smoldering fire, and good long-term fire inhibiting effects when applied proactively to protect combustible surfaces against the threat of fire ignition and flame spread of an incident fire.