Abstract: A concealed sprinkler includes a body, a seal, an activation element, a deflector, and a nosecone. The body includes a passageway having an inlet and an outlet, and defines a longitudinal axis through the inlet and the outlet. The seal couples with the outlet. The activation element couples with the seal. The activation element changes from a first state to a second state responsive to a fire condition to allow the seal to be displaced from the outlet. The deflector is coupled with the body and positioned along the longitudinal axis. The nosecone is coupled with the deflector and includes a first portion positioned along the longitudinal axis, a second portion spaced from the first portion and extending further outward than the first portion, and a wall forming a step between the first portion and the second portion.

Abstract: A sprinkler accelerator system includes an accelerator and at least one orifice. The accelerator is coupled with at least one pipe coupled with at least one sprinkler, and vents gas from the at least one pipe when the at least one sprinkler opens. The at least one orifice controls a rate of change of pressure in the at least one pipe to control operation of a flow control valve coupled with the accelerator.

Abstract: A fluid control valve includes a cover portion and a body portion. Inner surfaces of the cover and the body portion define a chamber that includes an inlet and an outlet in communication with the chamber. The cover portion includes a central section and an inversion inhibitor circumscribing the central section. The inversion inhibitor projects into the chamber toward a central axis of the chamber. The fluid control valve also includes a diaphragm disposed between the cover portion and the body portion. The diaphragm has a flexible member that is disposed within the chamber for controlling communication between the inlet and the outlet. The inversion inhibitor prevents the flexible member from reaching its natural-inverted position and creates a force within the flexible member that urges the flexible member to a seated position.

Abstract: A sprinkler includes a body, a button, an activation element, and a support bridge. The body defines an outlet. The button seals the outlet. The activation element is coupled with the button. The support bridge is coupled with the activation element, and includes a center, a first arm extending from the center, a second arm extending from the center, opposite the first arm, and an arch extending from the first arm to the second arm, the arch having a flat shape.

Abstract: A fusible link assembly including a first detection line, a second detection line, and a fusible link. The fusible link includes, a first substrate with a first end coupled to the first detection line, a second substrate with a first end coupled to the second detection line, and a solder layer directly bonded to a second end of the first substrate and a second end of the second substrate. The solder layer is configured to prevent separation of the first substrate and the second substrate until the solder layer reaches a temperature between 500° F.-575° F.

Abstract: A sprinkler assembly includes a pipe portion extending from an inlet end to an outlet end. The sprinkler assembly includes a stop coupled with the outlet end, the stop including a first wall and a second wall extending from the first wall, the first wall across the outlet end, the second wall contacting an inner surface of the pipe portion. The sprinkler assembly includes a plug coupled with the inlet end, the plug including a rim, a plug wall extending from the rim, and an end wall connected with the plug wall and opposite the rim, the plug wall contacting the inner surface of the pipe portion.

Abstract: Ceiling only dry sprinkler systems and methods for protection of a storage occupancy employing a mandatory fluid delivery delay period. The systems and methods provide for fire protection of stored commodities of forty-five feet or greater with a hydraulic design ranging from six to eighteen design sprinklers. The systems and methods employ an upright sprinkler having a nominal K-factor greater than 28.

Abstract: A pipe fitting assembly to allow for connecting of piping elements by inserting into the pipe fitting, and without the necessity of glued, soldered, or threaded connections. The fitting assembly can include a body element having an inlet and an outlet along a longitudinal axis. The body element can include a sealing recession and a retention recession. The fitting assembly can include a scaling ring to be inserted in the sealing recession, a spacer ring to also be inserted in the sealing recession, a grip ring to be inserted in the retention recession, or a retainer ring to be inserted in the retention recession and fixed to the body element.

Abstract: An injection mold for producing a sprinkler head part and related injection molding methods are described. The sprinkler head part includes a first, second, third and fourth mold portions. The first and second mold portions include first and second shaping elements structured to cooperatively form a body including a substantially cylindrical portion and a substantially planar portion, and two frame arms extending from the substantially planar portion of the body. The third mold portion includes a shaping element structured to form an orifice in the body of the sprinkler head. The fourth mold portion includes a shaping element structured to form a cross member connecting the two frame arms. The injection methods include injecting a composite material in molten form into the mold to form the molded sprinkler head part. The composite material includes thermoplastic polymeric resin and a plurality of reinforcing fibers dispersed in the resin.

Abstract: A sprinkler includes a body, at least one frame arm extending from the body, a deflector coupled with the at least one frame arm, a seal, and a thermal trigger between the deflector and the seal. The seal has a sol-gel material coating. The thermal trigger is to allow the seal to be released from the outlet responsive to a fire condition.

Abstract: An aqueous concentrate, which can be diluted with an aqueous diluent to form a foam precursor composition, is provided. The foam precursor composition may be aerated to form a firefighting foam. The present aqueous firefighting composition includes a surfactant component, which includes one or more of an anionic surfactant, a zwitterionic surfactant and a nonionic surfactant; a rheology additive, which includes clay; and at least about 30 wt. % water.

Abstract: Systems and methods described herein are directed to a sprinkler to provide fire protection. The sprinkler system can include a deflector portion, a head portion, a thermal trigger portion, a trigger seat, or a tubular outer structure. The tubular outer structure can define an internal water flow channel. The water flow channel can extend along a longitudinal axis between an inlet and an outlet. The trigger seat can include a tubular exterior. The tubular exterior can be coupled with the tubular outer structure. The trigger seat can include a component. The component can occlude a flow of fluid through the dry pendent sprinkler assembly. The component can maintain the thermal trigger portion in position. At least one portion of the tubular exterior of the trigger seat can protrude into the water flow channel at an angle towards the longitudinal axis.

Abstract: Systems and methods described herein are directed to a sprinkler to provide fire protection. The sprinkler system can include a deflector portion, a head portion, a thermal trigger portion, a trigger seat, or a tubular outer structure. The tubular outer structure can define an internal water flow channel. The water flow channel can extend along a longitudinal axis between an inlet and an outlet. The trigger seat can include a tubular exterior. The tubular exterior can be coupled with the tubular outer structure. The trigger seat can include a component. The component can occlude a flow of fluid through the dry pendent sprinkler assembly. The component can maintain the thermal trigger portion in position. At least one portion of the tubular exterior of the trigger seat can protrude into the water flow channel at an angle towards the longitudinal axis.

Abstract: Systems and methods herein are directed to a bracket assembly. The bracket assembly can include a first bracket portion, a second bracket portion, or a sliding mechanism. The first bracket portion can include a first end with a first protruding portion, a second protruding portion, and an opening that extends between the first and second protruding portions, or a second end. The opening can receive a portion of a flexible hose assembly. The second end can receive a portion of a lateral support bar. The second bracket portion can be slidably coupled with the first bracket portion through the sliding mechanism by a pin. The sliding mechanism can include an aperture to receive the pin. The sliding mechanism can move in a lateral direction between the first protruding portion and the second protruding portion of the first end of the first bracket portion about the pin within the aperture.

Abstract: Fire suppression systems and methods are provided. The fire suppression system can include a data processing system. The data processing system can be communicably coupled with a sensor. The sensor can sense system information indicative of a state of the fire suppression system. The data processing system can receive a signal from the sensor indicating the system information. The data processing system can determine the state of the fire suppression system based on the system information. The data processing system can identify a location to apply a voltage in order to indicate the state of the fire suppression system. The data processing system can apply the voltage to the location. The data processing system can transmit, responsive to application of the voltage to the location, an indication of the state of the fire suppression system to an external computing device, and present a visual representation of the indication.

Abstract: A sprinkler includes a frame, a deflector member, a sealing assembly, and a releasing mechanism for a controlled actuation. The releasing mechanism includes a hook member, a strut member, a load member, a link member, and an actuator. The link member surrounds or frames the strut and hook members and holds the members in a static relationship of an unactuated configuration. A preferred link member includes a single central slot through which each of the hook member and the strut member extend. The actuator is arranged with respect to the link member to separate the hook and strut members and break the link member upon operation of the actuator.

Abstract: A fire detection and suppression system includes a fire suppression system configured to suppress a fire, an ambient temperature sensor, one or more temperature sensors, and a controller. The ambient temperature sensor measures an ambient temperature. The one or more temperature sensors are configured to measure a hazard temperature. The controller is configured to receive ambient temperature readings from the ambient temperature sensor and hazard temperature readings from the one or more temperature sensors over a learning time period. The controller is configured to determine one or more characteristic values based on the received ambient temperature readings and the hazard temperature readings over the learning time period. The controller is configured to use the one or more characteristic values to detect a fire condition. The controller is configured to activate the fire suppression system in response to detecting the fire condition.

Abstract: A method of extinguishing or abating a lithium battery fire includes administering to the lithium battery fire a firefighting composition including a surfactant component including one or more non-ionic surfactants; a polysaccharide component; and water.

Abstract: Systems and methods herein are directed to a bracket assembly. The bracket assembly can include a first bracket portion, a second bracket portion, or a sliding mechanism. The first bracket portion can include a first end with a first protruding portion, a second protruding portion, and an opening that extends between the first and second protruding portions, or a second end. The opening can receive a portion of a flexible hose assembly. The second end can receive a portion of a lateral support bar. The second bracket portion can be slidably coupled with the first bracket portion through the sliding mechanism by a pin. The sliding mechanism can include an aperture to receive the pin. The sliding mechanism can move in a lateral direction between the first protruding portion and the second protruding portion of the first end of the first bracket portion about the pin within the aperture.

Abstract: Fire protection systems and methods of fire protection systems for protection of a stored commodity. The systems and methods included a plurality of fluid distribution devices disposed above the stored commodity and configured for selective identification and controlled actuation in response to a fire. The systems have a hydraulic demand defined by at least one of: i) a hydraulic design area having a minimum operational area of less than 768 square feet; or ii) less than twelve hydraulic design devices.