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 discharge valve includes a valve body, a closure, and a non-rigid valve member. The valve body has a bore that extends between an inlet and an outlet. The closure is seated to the valve body and extends to the bore. The non-rigid valve member has an interior and is fixed within the bore between the inlet and the outlet of the valve, the interior of the non-rigid valve member in fluid communication with the closure for expansion and contraction of the non-rigid valve member. Fire extinguisher assemblies and methods of making fire extinguisher assemblies are also described.

A discharge valve includes a valve body, a closure, and a non-rigid valve member. The valve body has a bore that extends between an inlet and an outlet. The closure is seated to the valve body and extends to the bore. The non-rigid valve member has an interior and is fixed within the bore between the inlet and the outlet of the valve, the interior of the non-rigid valve member in fluid communication with the closure for expansion and contraction of the non-rigid valve member. Fire extinguisher assemblies and methods of making fire extinguisher assemblies are also described.

A fire suppression system includes a feed port and a channel to couple the feed port to an actuation chamber. A solenoid valve controllably blocks a connection between the feed port and the channel. Pressure from the feed port builds up in the actuation chamber based on the solenoid valve unblocking the connection. A piston is in communication with the actuation chamber. The system also includes an inlet port closed off by a disc. The piston travels through the inlet port and burst the disc based on the pressure in the actuation chamber. An outlet port is coupled to the inlet port.

A valve actuation mechanism comprises a housing, an actuation pin rotatably mounted within the housing and at least one torque spring coupling the actuation pin to the housing for biasing the actuation pin from a first, inoperative rotational position towards a second, operative rotational position. The mechanism further comprises an actuation pin retaining element for selectively retaining the actuation pin in its first position, the retaining element being engageable with the actuation pin and the housing when the retaining element is in a retaining position so as to prevent rotation of the actuation pin towards its second position, and selectively disengageable from the housing to permit rotation of the actuation pin towards its second position. A locking element is provided for selectively preventing disengagement of the retaining element from the housing.

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.

Provided is a fire extinguisher which reduces a risk of a discharge accident caused when a stopper is unintentionally separated at a normal time and from which a handle is easily pulled out when fire occurs.

According to the fire extinguisher, a force pressing an upper handle is not transmitted to a valve stem as a gap between the upper handle and a plug is maintained by a gap support part when the stopper is installed on the handle, and the force pressing an upper handle is transmitted to the valve stem through a valve pressing part as the gap support part horizontally moves by an elastic member so as not to overlap the plug when the stopper is separated from the handle.

Provided is a fire extinguisher which reduces a risk of a discharge accident caused when a stopper is unintentionally separated at a normal time and from which a handle is easily pulled out when fire occurs.

According to the fire extinguisher, a force pressing an upper handle is not transmitted to a valve stem as a gap between the upper handle and a plug is maintained by a gap support part when the stopper is installed on the handle, and the force pressing an upper handle is transmitted to the valve stem through a valve pressing part as the gap support part horizontally moves by an elastic member so as not to overlap the plug when the stopper is separated from the handle.

In order to provide a portable fire extinguisher suitable for first-aid fire extinguishing, the fire extinguisher, using as the fire-extinguishing agent inert gas, etc. not limited in the object to be extinguished and the method of use due to toxicity to human body and making easy to maintain the necessary concentration of the fire-extinguishing agent, thus securing the effective fire-extinguishing effect, has the fire-extinguishing agent storage container to which the nozzle portion to discharge the fire-extinguishing agent is connected and made portable so as to be able to discharge the fire-extinguishing agent toward the object to be extinguished, and the nitrogen gas is stored in the fire-extinguishing agent storage container and at the outlet portion of the flow route of the fire-extinguishing agent formed in the nozzle portion, a metallic porous member in installed.

In order to provide a portable fire extinguisher suitable for first-aid fire extinguishing, the fire extinguisher, using as the fire-extinguishing agent inert gas, etc. not limited in the object to be extinguished and the method of use due to toxicity to human body and making easy to maintain the necessary concentration of the fire-extinguishing agent, thus securing the effective fire-extinguishing effect, has the fire-extinguishing agent storage container to which the nozzle portion to discharge the fire-extinguishing agent is connected and made portable so as to be able to discharge the fire-extinguishing agent toward the object to be extinguished, and the nitrogen gas is stored in the fire-extinguishing agent storage container and at the outlet portion of the flow route of the fire-extinguishing agent formed in the nozzle portion, a metallic porous member in installed.