A method of manufacturing a self-expanding fire-fighting foam solution is disclosed. Here, the method can include purging air from a container, wherein the purging is performed via flowing an inert gas into the container, such that substantially inert environment is created within the container. In addition, the method can further include dispensing or filling a pre-determined amount of foam concentrate into a container, dispensing or filling a pre-determined amount of water into the container, and mixing the foam concentrate and water within the container, wherein the mixed foam and water within the inert container provide the self-expanding fire-fighting foam solution and having a pH ranging from about 6.8 to 7.8 moles per liter.

This relates to apparatus that can form dilute aqueous firefighting compositions from an aqueous concentrate.

A fire suppression system for mitigating a thermal runaway event. The system comprising a battery pack having a housing defining a volume, a battery module arranged within the housing, and a plurality of battery cells arranged within the battery module, where the plurality of battery cells are configured to provide an electrical output. The system also comprising a suppression system coupled with the battery pack, the suppression system comprising a nozzle configured to receive a gaseous fluid and a liquid fluid, where the nozzle is configured to deliver a mist suppressant including the gaseous fluid and the liquid fluid to the battery pack, such that the gaseous fluid entrains the liquid fluid to mitigate the thermal runaway event.

A fire apparatus includes a fluid delivery system having a water circuit, an agent circuit, and a ratio controller. The water circuit includes a water pump configured to pump water from a water source through the water circuit. The agent circuit includes an agent tank configured to store an agent, an agent pump configured to pump the agent through the agent circuit, and an agent metering valve positioned to variably restrict a flow of the agent therethrough. The ratio controller is positioned to receive the water and the agent. The ratio controller is configured to provide an agent-water solution to one or more outlets. The agent metering valve is a self-adjusting metering valve having a valve controller configured to adjust at least one of an orifice size and a valve position based on a water flow rate entering the ratio controller and a preselected agent-to-water ratio for the agent-water solution.

The fire-escape composition is composed of two components, one consisting essentially of urea, diammonium hydrogen phosphate, ammonium hydrogen carbonate, sodium bicarbonate, fluorocarbon surfactant and water; the other consisting of tartaric acid, potassium citrate and potassium dihydrogen phosphate, wherein the two components are combined before usage. The fire-escaping system comprises the fire-escape composition and a container with a chamber, wherein the container is to be applied to a fire so as to deliver the composition.

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.

A fluid distribution system includes a first flow meter configured to be positioned along an agent line, a metering valve configured to be positioned downstream of the first flow meter, a second flow meter configured to be positioned downstream of the first flow meter and an eductor, and a controller configured to selectively operate the fluid distribution system in a testing mode where the controller is configured to acquire a first flow rate of a fluid flowing through the first flow meter and a second flow rate of the fluid flowing through the second flow meter, determine a performance characteristic based on the first flow rate and the second flow rate, and modulate a current setting of the metering valve from a first setting to a second setting and conduct the testing mode sequence again at the second setting to verify the fluid distribution system is performing properly.

A method of manufacturing a self-expanding fire-fighting foam solution is disclosed. Here, the method can include purging air from a container, wherein the purging is performed via flowing an inert gas into the container, such that substantially inert environment is created within the container. In addition, the method can further include dispensing or filling a pre-determined amount of foam concentrate into a container, dispensing or filling a pre-determined amount of water into the container, and mixing the foam concentrate and water within the container, wherein the mixed foam and water within the inert container provide the self-expanding fire-fighting foam solution and having a pH ranging from about 6.8 to 7.8 moles per liter.

A fluid system includes a ratio controller. The ratio controller includes a housing, a nozzle, and a diffuser. The housing defines a mixing chamber, a first inlet positioned at a first end of the mixing chamber, an outlet positioned at an opposing second end of the mixing chamber, and a second inlet positioned at a location around a periphery of the mixing chamber between the first inlet and the outlet. The first fluid is configured to receive a first fluid input. The second inlet is configured to receive a second fluid input. The nozzle includes a nozzle inlet positioned proximate the first inlet and a nozzle outlet positioned within the mixing chamber. The diffuser extends from the outlet and outward from the housing. The diffuser includes a diffuser inlet positioned within the mixing chamber.

A fire protection system that includes a fluid supply and a fluid delivery apparatus. The fluid delivery apparatus receives fluid from the fluid supply and delivers a protectant solution to a building to prevent the building from catching fire. The fluid delivery apparatus includes an expansion chamber having an inlet for receiving fluid from the fluid supply, and an outlet where the protectant solution exits the expansion chamber. The fluid delivery apparatus also includes a resource line in fluid communication with the expansion chamber to provide a flame resistant substance to the expansion chamber from a reservoir. Further, the fluid delivery apparatus includes a vent line in fluid communication with the reservoir and the expansion chamber, a pressure difference between the vent line and the resource line causes the fluid in the vent line to push the flame resistant substance from the reservoir to the expansion chamber via the resource line. A method of installing the fire protection system on a building. The fluid delivery apparatus of the fire protection system can be provided to receive fluid from the fluid supply and positioned adjacent to desirous parts of the building to deliver a protectant solution from the fluid delivery apparatus to the building.