A dry sprinkler includes a flexible tube section that maintains a pressurized fluid, such as a liquid antifreeze solution, between a first end and a second end. A first seal prevents fluid from a supply line from entering the flexible tube section. The first seal is maintained in a sealed position by a pressure of the pressurized fluid. A sprinkler head is coupled to the second end of the flexible tube section, and includes a frame, an output orifice, a deflector, a second seal that seals the output orifice, and a thermally responsive element configured to maintain the second seal in a sealed position when the thermally responsive element is in a non-responsive state. A differential pressure controller maintains a ratio between the pressure of the pressurized fluid in the flexible tube section and a pressure of a supply fluid in the supply line to at least a certain ratio.

A dry sprinkler includes a flexible tube section that maintains a pressurized fluid, such as a liquid antifreeze solution, between a first end and a second end. A first seal prevents fluid from a supply line from entering the flexible tube section. The first seal is maintained in a sealed position by a pressure of the pressurized fluid. A sprinkler head is coupled to the second end of the flexible tube section, and includes a frame, an output orifice, a deflector, a second seal that seals the output orifice, and a thermally responsive element configured to maintain the second seal in a sealed position when the thermally responsive element is in a non-responsive state. A differential pressure controller maintains a ratio between the pressure of the pressurized fluid in the flexible tube section and a pressure of a supply fluid in the supply line to at least a certain ratio.

A sensor assembly for monitoring any fluid accumulation, temperature, and other properties, characteristics and conditions of the fluid in the dry portion of a life safety fire sprinkler system. The sensor assembly includes a sensor receptacle, an initial fluid level accumulation sensor, a fluid temperature sensor, and at least one upper fluid level accumulation sensor. The sensor assembly can transmit data in real time through a transmitter assembly to a controller and based upon programmed criteria and interact in real time, with other devices. For example, if the sensor assembly detects an amount of condensed fluid in the system and a temperature of the condensed fluid is below a programmed value (e.g., ≤38.0° F.), the system can send an alarm in real time that the system could be experiencing a potential fluid freezing event which could be detrimental to the sprinkler system.

A sensor assembly for monitoring any fluid accumulation, temperature, and other properties, characteristics and conditions of the fluid in the dry portion of a life safety fire sprinkler system. The sensor assembly includes a sensor receptacle, an initial fluid level accumulation sensor, a fluid temperature sensor, and at least one upper fluid level accumulation sensor. The sensor assembly can transmit data in real time through a transmitter assembly to a controller and based upon programmed criteria and interact in real time, with other devices. For example, if the sensor assembly detects an amount of condensed fluid in the system and a temperature of the condensed fluid is below a programmed value (e.g., ≤38.0° F.), the system can send an alarm in real time that the system could be experiencing a potential fluid freezing event which could be detrimental to the sprinkler system.

A nozzle plug for a deluge fire protection system having nozzles connected with a pipe network, the nozzles having a pipe connection with a nozzle chamber and a nozzle orifice allowing for the flow of water toward a deflector for dispersal, includes a plug body configured to fit within the nozzle chamber and/or nozzle orifice and form a seal of the nozzle orifice; a deformable component connected with the plug body configured to retain the seal of the nozzle orifice up to a predetermined pressure level above atmospheric pressure within the pipe network and to deform when a current pressure with the pipe network exceeds the predetermined pressure level and release the seal of the nozzle orifice to allow for the flow of water through the nozzle orifice; and wherein the deformable component is configurable to calibrate a deformation point corresponding to the predetermined pressure level.

A nozzle plug for a deluge fire protection system having nozzles connected with a pipe network, the nozzles having a pipe connection with a nozzle chamber and a nozzle orifice allowing for the flow of water toward a deflector for dispersal, includes a plug body configured to fit within the nozzle chamber and/or nozzle orifice and form a seal of the nozzle orifice; a deformable component connected with the plug body configured to retain the seal of the nozzle orifice up to a predetermined pressure level above atmospheric pressure within the pipe network and to deform when a current pressure with the pipe network exceeds the predetermined pressure level and release the seal of the nozzle orifice to allow for the flow of water through the nozzle orifice; and wherein the deformable component is configurable to calibrate a deformation point corresponding to the predetermined pressure level.

A sprinkler system includes a fitting, at least one tube, at least one fluid distribution device, and an actuator. The fitting connects with at least one pipe, defines an opening, and includes a seal. The seal has a closed state in which the seal seals the opening and an open state in which the seal does not seal the opening to allow fluid flow from the at least one pipe through the opening. The at least one tube connects with the fitting on an opposite side of the seal from the at least one pipe. The fluid distribution device is connected with the at least one tube. The actuator receives a detection signal indicative of a trigger condition and causes the seal to change from the closed state to the open state to allow the fluid flow through the opening responsive to receiving the detection signal.

A sprinkler system includes a fitting, at least one tube, at least one fluid distribution device, and an actuator. The fitting connects with at least one pipe, defines an opening, and includes a seal. The seal has a closed state in which the seal seals the opening and an open state in which the seal does not seal the opening to allow fluid flow from the at least one pipe through the opening. The at least one tube connects with the fitting on an opposite side of the seal from the at least one pipe. The fluid distribution device is connected with the at least one tube. The actuator receives a detection signal indicative of a trigger condition and causes the seal to change from the closed state to the open state to allow the fluid flow through the opening responsive to receiving the detection signal.

A fire extinguishing apparatus for a vehicle is provided, which is capable of quickly and easily extinguishing, at an initial time, a fire that occurs in an engine compartment of a vehicle by injecting a fire extinguishing fluid into the engine compartment from the outside of the engine compartment when the fire occurs in the engine compartment of the vehicle. The fire extinguishing apparatus for a vehicle according to an exemplary embodiment of the present invention includes: a cowl assembly provided at a boundary between the outside and an engine compartment that defines an internal space of a vehicle, and configured to divide the outside from the engine compartment; and a fire extinguishing pipe coupled to the cowl assembly to allow the engine compartment to communicate with the outside, in which an inlet portion of the fire extinguishing pipe, of which at least one end is exposed to the outside, is connected to a fire extinguisher having therein a fire extinguishing material, and an outlet portion of the fire extinguishing pipe, which is partially exposed into the engine compartment, guides the fire extinguishing material discharged from the fire extinguisher so that the fire extinguishing material is injected into the engine compartment.

A fire extinguishing apparatus for a vehicle is provided, which is capable of quickly and easily extinguishing, at an initial time, a fire that occurs in an engine compartment of a vehicle by injecting a fire extinguishing fluid into the engine compartment from the outside of the engine compartment when the fire occurs in the engine compartment of the vehicle. The fire extinguishing apparatus for a vehicle according to an exemplary embodiment of the present invention includes: a cowl assembly provided at a boundary between the outside and an engine compartment that defines an internal space of a vehicle, and configured to divide the outside from the engine compartment; and a fire extinguishing pipe coupled to the cowl assembly to allow the engine compartment to communicate with the outside, in which an inlet portion of the fire extinguishing pipe, of which at least one end is exposed to the outside, is connected to a fire extinguisher having therein a fire extinguishing material, and an outlet portion of the fire extinguishing pipe, which is partially exposed into the engine compartment, guides the fire extinguishing material discharged from the fire extinguisher so that the fire extinguishing material is injected into the engine compartment.