A nozzle includes a nozzle housing defining a first flow path having a first inlet at a first end of the nozzle housing and a first outlet at a second end of the nozzle housing. The nozzle housing also defines a second flow path having a second inlet at an outer surface of the nozzle housing and a second outlet in a side wall of the nozzle housing defining the first flow path, the second outlet defining a Coanda profile and having an annular shape around the first flow path. The nozzle housing defines a third flow path having a third inlet at the outer side surface of the nozzle housing and a third outlet in the side wall defining the first flow path, the third outlet comprising a plurality of holes arranged in an annular pattern around the first flow path.

Provided is a dropping-type fire extinguishing body that, in fire extinguishing using a gel-like fire extinguishing agent, can allow the fire extinguishing agent to be smoothly conveyed and dropped. A dropping-type fire extinguishing body 1 to be dropped onto the fire site to extinguish the fire, wherein a gelling agent 3 is contained in a bag body 2 formed of a water-permeable material and water is permeated into the body and is mixed with the gelling agent to prepare a gel-like fire extinguishing agent, thereby filling the gel-like fire extinguishing agent into the inside of the bag body.

A mist generating apparatus is provided. The apparatus has a longitudinal axis and comprises first and second opposing surfaces which define a transport fluid nozzle between them. The apparatus also has a working fluid passage having a supply passage connectable to a supply of working fluid, and an outlet on one of the first and second surfaces. The working fluid outlet communicates with the transport fluid nozzle. The transport fluid nozzle has a nozzle inlet connectable to a supply of transport fluid, a nozzle outlet, and a throat portion intermediate the nozzle inlet and nozzle outlet. The nozzle throat has a cross sectional area which is less than that of either the nozzle inletor the nozzle outlet. The transport fluid nozzle projects radially from the longitudinal axis such that the nozzle defines a rotational angle of at least 5 degrees about the longitudinal axis.

A combustible aerosol composition is disclosed including an oxidizer including potassium bromate, a fuel including potassium cyanurate, and a hydrated mineral composition including potassium hydromagnesite.

A fire suppressant discharge device is disclosed for connection to a mounting frame 30 and/or to fire suppressant distribution pipework 26. The device comprises an electrical firing circuit 20 configured to cause fire suppressant to be discharged from a discharge valve if triggered, and at least one arming switch 24 in the firing circuit 20 that is movable between an open position and a closed position. The arming switch 24 is arranged on the device and configured so as to be automatically moved to the closed position by connection of the device to a mounting frame 30 and/or to fire suppressant distribution pipework 24 so as to arm the firing circuit 20.

A solid propellant gas generator fire suppression device 6 is disclosed comprising: a solid propellant material for generating a first fire suppression gas when combusted; an ignitor 10 for igniting the solid propellant material so as to generate said gas; an exhaust 12 for said gas; and an odorizer material arranged within the gas generator so that when the ignitor 10 is activated the odorizer material, or an odorous product thereof, exits the gas generator 6 through the exhaust 12.

A device for suppressing and/or extinguishing a fire associated with a container may include a housing defining a hollow sleeve and a column configured to be received within the hollow sleeve. The column may define a first chamber, a second chamber, at least one aperture, and a piercing end configured to pierce a barrier. The first chamber may be configured to receive an expansion agent, and the second chamber may be configured to receive a fire extinguishing agent. The device may be configured such that upon activation of the expansion agent, the column extends from the housing so as to enable the piercing end to penetrate the container and to enable the fire extinguishing agent to be delivered into an interior of the container via the at least one aperture.

A fire extinguishing agent delivery apparatus, system, and method of use having an outer tube with an inlet attached to a pressurized water source and an outlet attached to a firefighting hose. The apparatus includes an inner venturi tube mounted within the outer tube, having a funnel-shaped inlet and outlet, a reduced diameter intermediate portion, and an extinguishing agent inlet port. The apparatus includes a device for injecting extinguishing agent into the inlet port and the venturi tube has a smaller diameter than the outer tube, so a portion of water travels through the venturi tube and mixes with extinguishing agent and a greater portion of water travels unobstructed through the outer tube and mixes with the mixture of water and fire extinguishing agent discharged from the venturi tube, prior to discharge from the outer tube.

The system includes an intake assembly upstream of a pump within the bucket which selectively uses an outer port for drawing water outside of the bucket into the system and an inner port for drawing water from within the bucket into the system. A polymer gel port is interposed between the intake assembly and the pump for combination, mixing and activation of a water and polymer gel emulsion combination within the pump. A fill assembly is provided downstream of the pump which can selectively direct water back into the bucket. A discharge assembly is also provided downstream of the pump which leads to a nozzle or other outlet for water and/or polymer gel emulsion from the system. A control valve selects between delivery of water and/or polymer gel emulsion back into the bucket through the fill assembly or out of the bucket through the discharge.

A system for delivering an additive into a fluid stream is disclosed that addresses the issues of delivering a pressurized stream of a shear thickening or dilatant material which is commonly used for fire suppression. The system uses a positive displacement pump that is controlled to deliver the additive to a fluid stream in the correct ratio according to fluid flow rates. The system also incorporates an injection quill for delivering the additive to the fluid stream within a dispensing line. The injection quill includes an internal extension within its valve chamber, and the internal extension provides ports that allow for improved fluid flow of dilatant material.