Abstract: A fire protection sprinkler is provided. The sprinkler includes a body having an output orifice and a flange; a seal cap to seal a flow of fluid from the output orifice; and a thermally-responsive element positioned to releasably retain the seal cap and constructed to separate into a plurality of portions upon exposure to a predetermined temperature. The sprinkler also includes at least one deflector support member, a deflector connected to the deflector support member, and at least one arm extending from each of the deflector support members. Each of the arms has a free end positioned in spaced relation to the thermally-responsive element to contact the portions of the thermally-responsive element upon separation thereof. In another embodiment, the sprinkler includes at least one arm extending from the flange, and the arms may be formed as a bracket.

Abstract: Fire-extinguishing agent supplying equipment pressurizes a water-based fire-extinguishing agent and supplies the agent via a pipe; and the water-based fire-extinguishing agent is pressurized and supplied via the pipe to an electrification spray head installed in a protection area A, and the jetted particles of the fire-extinguishing agent are electrified and sprayed from the electrification spray head. A pulsed or alternating electrification voltage is applied to the electrification spray head from a voltage application unit 15, and an external electric field generated by applying the voltage between a water-side electrode unit and an induction electrode unit is applied to the fire-extinguishing agent in a jetting process to electrify the jetted particles.

Abstract: An aircraft fire prevention system provides oxygen depleted (hypoxic) air for the fuel tank and/or cargo compartment protection; the system does not employ compressed air for the production of hypoxic air, which allows to save energy and fuel and to reduce negative impact on the earth atmosphere.

Abstract: A sprinkler assembly including a fluid deflecting structure including a plurality of spaced apart tines defining a plurality of slots. The tines include a first pair of symmetric tines and a second pair of symmetric tines disposed orthogonally to the first pair of symmetric tines. The tines includes outer edges of varying configuration to define tine and slot geometries and patterns.

Abstract: A cover plate for a concealed sprinkler includes a member having at least one passageway section enabling heated air to pass between the cover plate and the sprinkler housing and towards the sprinkler head to permit the timely activation of the sprinkler head. The passageway section is defined by an outwardly extending peripheral rim of the cover plate or by a cutout section along one edge enabling air to pass therethrough. The cover plate includes a plurality of mounting tabs upon which a fusible material is applied to adhere the cover plate to the housing of the sprinkler head. The cover plate increases the response time of the concealed sprinkler head while maintaining a low profile, discrete appearance.

Abstract: A sprinkler assembly includes a sprinkler body having a base and a frame extending from the base. The base has a passage extending therethrough defining an inlet and an outlet. A deflector is mounted to the frame and spaced from the outlet, which is configured to deflect fluid flowing from the outlet in a radial pattern. A trigger assembly extends between the frame and the base and is adapted to support a pip cap assembly in the outlet and release the plug when a temperature associated with a fire condition is detected. The pip cap assembly includes a copper shell and a stainless steel insert received in the copper shell and extending outward therefrom.

Abstract: A dry sprinkler for a fire protection system. The preferred dry sprinkler has a metallic disc annulus positionable within a passageway to skew a central axis of a face of the metallic disc annulus with respect to a longitudinal axis of the dry sprinkler so that an expected minimum flow rate based on a rated discharge coefficient is provided. The dry sprinkler operates to provide an expected flow rate over a range of start pressures. The expected flow rate is based on a K-factor rating. The dry sprinkler provides an acceptable level of fluid flow rate from the expected flow rate based on the K-factor for a range of start pressures.

Abstract: An adaptor is provided that is configured to receive a support assembly for mounting a flexible fire sprinkler fitting in a ceiling support structure formed of parallel, spaced beams. The adaptor includes first and second long sides configured to be secured to each beam of an adjacent pair of beams, and first and second short sides configured to be secured to the support assembly. One end of each long side is joined by the first short side, and an opposed end of each long side is joined by the second short side such that the first and second long sides are parallel to each other and perpendicular to the first and second short sides, whereby the adaptor is a generally elongated, hollow, rectangular structure. The adaptor permits the support assembly to be mounted in a suspended ceiling formed of hat channel or metal stud furring.

Abstract: A trim manifold assembly is utilized to facilitate control of the control valve in a fire protection system. The trim manifold assembly utilizes a manifold block with numerous passageways to provide desired flow communication between various components, such as automatic and manual valves, check valves, inlet and exit ports, and sensor ports, by way of non-limiting example. The trim manifold assembly can be cost-effectively manufactured and may require less assembly steps. The trim manifold assembly can facilitate the assembly of a fire protection system and the attachment of the trim manifold assembly to the control valve for operation thereof.

Abstract: A cover plate for a concealed sprinkler includes a member having at least one passageway section enabling heated air to pass between the cover plate and the sprinkler housing and towards the sprinkler head to permit the timely activation of the sprinkler head. In one embodiment, the passageway section is defined by one or more undulations formed within the cover plate, each of which define a ridge at the periphery, enabling air to pass therethrough. The cover plate includes a plurality of mounting tabs upon which a fusible material is applied to adhere the cover plate to the housing of the sprinkler head. The cover plate of the present invention increases the response time of the concealed sprinkler head while maintaining a low profile, discrete appearance.

Abstract: A shipping cap for a sprinkler includes a main body having a hollow annular wall portion having a closed upper end. A first pair of side legs extend laterally and axially from a first side of the cylindrical wall portion and a second pair of side legs extend laterally from a second side of the cylindrical wall portion. A first side curtain extends from one of the first pair of side legs and one of the second pair of side legs and a second side curtain extends from the other of the first pair of side legs and the other of the second pair of side legs.

Abstract: Method and a fire-fighting extinguisher nozzle for providing a spray of fine droplet mist of liquid into a space, room or a cavity, comprises a number of openings in the exterior surface of the nozzle. Openings communicate with a liquid source through at least one small diameter drilled hole in a nozzle material, enabling liquid in the form of a mist to be directed at least partly in lateral direction and/or at least partly in a sector axially out from the nozzle. The nozzle is also being associated with trigger mechanism, initiating the mist creating effect by allowing an extinguishing liquid to be sprayed out the openings of the nozzle when heat or fumes are detected. Some of the drilled holes are configured in such way that a deflecting surface is provided inside the drilled holed in the nozzle material in the vicinity of the outlet, causing formation of the mist spray of crushed liquid consisting of fine, minute droplets just inside the drilled holes.

Abstract: A temperature-activated valve for a conventional fire sprinkler utilizing a hyperelastic single-crystal shape memory alloy is described. The shape-memory element expands as it is heated, forcing a bolt to break, thereby opening the sprinkler valve. The devices described are less susceptible to accidental breakage than conventional actuators, and have fewer moving parts. Transition temperature of the shape memory alloy can be tuned to a narrow range.

Abstract: A fire sprinkler of the preferred embodiments includes a frame, a trigger, and a deflector. The frame defines a duct to exhaust the flow of a fire suppressing or extinguishing substance, and includes a fastener to fasten the frame to a supply line. The trigger blocks the flow of the fire suppressing or extinguishing substance through the duct during a first mode, and permits the flow of the fire suppressing or extinguishing substance during a second mode. The deflector redirects the flow of the fire suppressing or extinguishing substance into a coverage area. The deflector also at least partially shields the trigger from the dispersal of a fire suppressing or extinguishing substance from an adjacent fire sprinkler and prevents a failure of the trigger.

Abstract: A concealed sprinkler including a body having a proximal portion and a distal portion. The distal portion includes an annular wall defining a chamber and an opening in communication with the chamber. A deflector assembly is disposed within the chamber. A trigger assembly having a lever assembly engaged with an inner surface of the annular wall supports the deflector assembly in the first position, the trigger assembly including and a thermally rated plate assembly having a lip portion to substantially circumscribe and substantially cover opening and chamber.

Abstract: [Problem] To present an injection head for gas-type fire exchanger using an injection head of a small size, capable of enhancing the noise reduction rate, and lowering the injection reaction of the fire-extinguishing gas applied to the injection head at the time of release of the fire-extinguishing gas.

Abstract: A corridor sprinkler includes a first flow shaper member supported by a support for shaping the flow of fluid from a sprinkler that includes a shelf portion having a proximal end and a distal end, the shelf being generally parallel to and spaced from the axis of the flow passage through the sprinkler body. A shield extends directly from the distal end of the shelf and generally perpendicular to the axis and partially intersecting the column of fluid without the support obstructing the column of fluid between the discharge opening and the shield. The shelf and the shield can each have a diameter greater than a diameter of the discharge opening. A second flow shaper can extend from the support on an opposite side of the axis from the first flow shaper and partially intersecting the column of fluid.

Abstract: A sprinkler assembly can utilize an adapter having straight threads and an internal sealing member therein to attach the sprinkler to a piping system. The sprinkler may include tapering threads that engage with the straight threads of the adapter and compress the sealing member therein to form a fluid-tight seal. A sprinkler assembly can utilize a fitting that is attached to an extension member containing the sprinkler. The fitting allows the sprinkler and extension member to be coupled to the piping system with a solvent weld. A sprinkler assembly can utilize an attachment system to couple a sprinkler attached to an extension member to a piping system. The attachment system can include a first fitting attached to the connection member, a second fitting attached to the piping system, and a clamping member to clamp the two fittings together.

Abstract: A low pressure, extended coverage, fire protection sprinkler, e.g., of the upright type, suitable for use in protection of at least extra hazard and high piled storage occupancies, in accordance with the 1999 Edition of NFPA 13, has a body with an internal passageway extending between an inlet end and an opposite outlet end, and a deflector mounted to the body by at least one support arm and disposed in alignment with the axis and generally spaced from the outlet end of the internal passageway. The sprinkler has a predetermined K-factor, e.g., of greater than about 16.0. The sprinkler is configured and arranged to deflect flow of water generally radially outwardly and downwardly of the sprinkler in a predetermined spray pattern. Preferably, the predetermined spray pattern has a generally polygonal shape, e.g., a rectangular shape, when viewed at a predetermined distance below the deflector.

Abstract: A concealed sprinkler including a body having a proximal portion and a distal portion. The distal portion includes an annular wall defining a chamber and an opening in communication with the chamber. A deflector assembly is disposed within the chamber. A trigger assembly having a lever assembly engaged with an inner surface of the annular wall supports the deflector assembly in the first position, the trigger assembly including and a thermally rated plate assembly having a lip portion to substantially circumscribe and substantially cover opening and chamber.

Abstract: A horizontal sidewall fire protection sprinkler has a deflector having a vertical face, transverse to the fluid flow from the output orifice, and a horizontal shelf positioned above and perpendicular to the vertical face. A portion of the horizontal shelf extends in the fluid flow direction by a first length, with respect to the vertical face, and this first length is less than about half of the total length of the horizontal shelf in the fluid flow direction. The sprinkler may be installed in a support cup having a raised mounting platform configured to receive the sprinkler body and a cylindrical outer surface. A horizontal or pendent fire protection sprinkler has a body having an output orifice and a flange and a seal cap to seal a flow of fluid from the output orifice and a thermally-responsive element positioned to releasably retain the seal cap. Housing members extend through and from the flange of the sprinkler body, and contain rods, each of which extends through the flange.

Abstract: A combined plug and sealing ring for a sprinkler nozzle includes a nozzle plug having a substantially cylindrical portion adapted to engage within a nozzle orifice of a sprinkler nozzle, and a cap overlaying the substantially cylindrical portion. A sealing ring is adapted to seat onto a threaded pipe fitting portion of the sprinkler nozzle. A leash interconnects the nozzle plug and the sealing ring. A combined plug and sealing ring in combination with a sprinkler nozzle, and a method of installing a sprinkler nozzle in a highly corrosive or extremely corrosive environment are also disclosed.

Abstract: Disclosed is an intelligent, autonomously usable closure for misting nozzles, atomizing nozzles and sprinklers. A covering plate 20 is fixed on the closure having a heat tripping device, a nozzle body 2, outlet channel 11 and outlet opening 10 by means of a melt tripping device 5. The melt tripping device 5 is activated when necessary by a heat element 23 and the outlet opening 10 is released. A structural element 21, such as a disk spring, ensures at the melting moment of the melt tripping device 5 that a force F is applied and the covering plate 20 is separated with force from the outlet opening. In case of emergency, the release is triggered without energy. The proposed autonomous device can be used in a system network and can also be integrated into an existing system.

Abstract: A fire sprinkler of the preferred embodiments includes a frame, a trigger, and a deflector. The frame defines a duct to exhaust the flow of a fire suppressing or extinguishing substance, and includes a fastener to fasten the frame to a supply line. The trigger blocks the flow of the fire suppressing or extinguishing substance through the duct during a first mode, and permits the flow of the fire suppressing or extinguishing substance during a second mode. The deflector redirects the flow of the fire suppressing or extinguishing substance into a coverage area. The deflector also at least partially shields the trigger from the dispersal of a fire suppressing or extinguishing substance from an adjacent fire sprinkler and prevents a failure of the trigger.

Abstract: a fire-prevention sprinkler that can be used with a dual-use or multipurpose supply may have a sprinkler body, an inlet to admit water into the sprinkler body and an outlet by which the water can exit the sprinkler body upon actuation of the sprinkler, as well as a deflector to direct the water in a desired pattern as the water exits the sprinkler outlet, and an actuation device, that opens at least the sprinkler outlet upon detection of a fire condition. The entire inner surface of the water passage is made of a material such as will protect the water in the sprinkler from absorbing potentially harmful substances, including as one example lead. The entire sprinkler body may be made of that same substance, as well, and the seal(s) may be made of the same material, or of another having the mentioned property. Such materials are preferably metals, but may be plastic or vitreous.

Abstract: A temperature-activated valve for a conventional fire sprinkler utilizing a hyperelastic single-crystal shape memory alloy is described. The shape-memory element expands as it is heated, forcing a bolt to break, thereby opening the sprinkler valve. The shape memory element typically communicates with the valve so as to force it open. The devices described are less susceptible to accidental breakage than conventional actuators, and have fewer moving parts. Transition temperature of the shape memory alloy can be tuned to a narrow range.

Abstract: An exemplary sprinkler nozzle includes a nozzle body having a sidewall, an internal passage and a plurality of slots through the sidewall to allow fluid to pass from the internal passage to an outside of the nozzle. Each of the slots has an axial dimension in a direction generally parallel to an axis of the nozzle body. Each of the slots has a second dimension in a different direction. At least a first one of the slots is axially offset from at least the second one of the slots. An opening provided by the first slot partially overlaps the opening of the second slot in the different direction.

Abstract: A horizontal sidewall fire protection sprinkler has a deflector having a vertical face, transverse to the fluid flow from the output orifice, and a horizontal shelf positioned above and perpendicular to the vertical face. A portion of the horizontal shelf extends in the fluid flow direction by a first length, with respect to the vertical face, and this first length is less than about half of the total length of the horizontal shelf in the fluid flow direction. The sprinkler may be installed in a support cup having a raised mounting platform configured to receive the sprinkler body and a cylindrical outer surface. A horizontal or pendent fire protection sprinkler has a body having an output orifice and a flange and a seal cap to seal a flow of fluid from the output orifice and a thermally-responsive element positioned to releasably retain the seal cap. Housing members extend through and from the flange of the sprinkler body, and contain rods, each of which extends through the flange.

Abstract: An aesthetic cover is provided to conceal a cover plate of a concealed fire protection sprinkler, the cover plate having an inner side facing the sprinkler and a wall or ceiling surface and an outer side facing away from the sprinkler. The cover includes a concealing surface and an attachment member configured to attach the concealing surface to the cover plate so as to conceal the cover plate.

Abstract: A sprinkler which comprises a sprinkler frame (2), in which there is at least one nozzle (3), a heat-activated triggering element (5), and a protective element (8) which is in front of the nozzle (3) in the protective position and mechanically protects the triggering element (5) when the sprinkler is in a non-active mode, and which protective element (8) is movable to a second position in which the nozzles (3) and the triggering element (5) are not protected by the protective element (8).

Abstract: A dry sprinkler for a fire protection system. The preferred dry sprinkler has a metallic disc annulus positionable within a passageway to skew a central axis of a face of the metallic disc annulus with respect to a longitudinal axis of the dry sprinkler so that an expected minimum flow rate based on a rated discharge coefficient is provided. The dry sprinkler operates to provide an expected flow rate over a range of start pressures. The expected flow rate is based on a K-factor rating. The dry sprinkler provides an acceptable level of fluid flow rate from the expected flow rate based on the K-factor for a range of start pressures.

Abstract: An upright ESFR sprinkler includes a generally tubular body, at least one frame arm, a closure assembly, an unactuated heat responsive trigger assembly and a deflector assembly with a K-factor greater than 14, and preferably 16.8. The passageway extends between inlet and outlet openings. The closure is positioned proximate the outlet so as to occlude the passageway with a Belleville seal. An ejection spring is coupled to the closure assembly. The heat responsive trigger assembly has a Response Time Index of 40 meter1/2-second1/2 (m1/2sec1/2) or less. The deflector assembly includes a nosepiece and a plate like redirecting member. The plate like redirecting member faces the outlet and is coupled to the at least one frame arm and spaced from the outlet opening. The plate shaped member includes a first generally planar portion, a conical second portion, and a third portion extending from the conical second portion.

Abstract: A wide protection range can be ensured by extending the flying distance of fire-extinguishing agent particles electrified and sprayed from a head. A water-based fire-extinguishing agent is pressurized and supplied to an electrification spray head 10 installed in a protection area A via a pipe, the jetted particles of the fire-extinguishing agent are electrified and sprayed from the electrification spray head 10. The electrification spray head mixes and sprays the fire-extinguishing agent having a comparatively small particle size included in a range from 30 ?m to 200 ?m by a small-particle jetting nozzle 38a and the fire-extinguishing agent having a comparatively-large particle size of 200 ?m to 2000 ?m by a large-particle jetting nozzle 38b, thereby carrying the group of the fire-extinguishing-agent particles having the small particle size by the air current caused by spraying the group of the fire-extinguishing-agent particles having the large particle size.

Abstract: A landing pad with an inbuilt fire suppressor that includes at least one first interlocking unit. The interlocking unit includes a landing surface, wherein the landing surface includes openings distributed thereon; and at least one interlocking mechanism located along its periphery. The interlocking mechanism is adapted to interconnect with a corresponding interlocking mechanism from another interlocking unit. A hollow chamber is located beneath the landing surface such that the hollow chamber is in fluid communication with the openings. A heat conductive layer is arranged to span across the hollow chamber thereby subdividing the hollow chamber into an upper section and a lower section. The upper section is in fluid communication with the openings. The heat conductive layer is adapted to dissipate heat from a localized point thereon to over the entire heat conductive layer.

Abstract: A dry sprinkler is provided that includes a structure, a fluid deflecting structure, a locator, a metallic annulus and a shield. The structure defines a passageway extending along a longitudinal axis between an inlet and an outlet. The structure has a rated K-factor defining an expected flow of fluid in gallons per minute from the outlet divided by the square root of the pressure of the flow of fluid fed into the inlet of the passageway in pounds per square inch gauge. The fluid deflecting structure is proximate the outlet. The locator is movable along the longitudinal axis between a first position and a second position. The locator supports the metallic annulus. The metallic annulus includes first and second metallic surfaces spaced apart along the longitudinal axis between an inner and outer circumference with respect to the longitudinal axis. The shield has a first face exposed to the inlet and a second face confronting the first metallic surface to define a gap there between.

Abstract: Fire-extinguishing agent supplying equipment pressurizes a water-based fire-extinguishing agent and supplies the agent via a pipe; and the water-based fire-extinguishing agent is pressurized and supplied via the pipe to an electrification spray head installed in a protection area A, and the jetted particles of the fire-extinguishing agent are electrified and sprayed from the electrification spray head. A pulsed or alternating electrification voltage is applied to the electrification spray head from a voltage application unit 15, and an external electric field generated by applying the voltage between a water-side electrode unit and an induction electrode unit is applied to the fire-extinguishing agent in a jetting process to electrify the jetted particles.

Abstract: An early suppression fast response pendent-type fire protection sprinkler is suitable for use in accordance with one or more of NFPA 13, NFPA 231 and NFPA 231C to protect single row rack storage, double row rack storage and multiple row rack storage, the sprinkler having a K-factor of about 25 and flowing pressure of about 15 pounds per square inch. Preferably, the sprinkler has a body defining an orifice and an outlet for delivering a flow of fluid from a source, and a deflector mounted with a first surface opposed to flow of fluid from the outlet. The deflector defines at least one pair of generally opposed reentrant slots extending from the first surface through the deflector, the reentrant slots extending from slot openings at an outer peripheral edge of the deflector inwardly from the peripheral edge toward a deflector axis.

Abstract: To provide a sprinkler head including: a sprinkler head main body having a nozzle therein, connected to water supply piping, and installed in a ceiling; a cover plate concealing the sprinkler head main body; a retainer disposed so that the cover plate is located below the ceiling surface and capable of releasing the cover plate in the event of fire; and a cylindrical member that is attached to the sprinkler head main body and to which the retainer is detachably connected, and having a structure that can save the trouble of removing and reattaching a protective cap at the time of installation of the sprinkler head. The sprinkler head has such a structure that a protective cap attached to the sprinkler head is fitted to the outer periphery of the sprinkler head main body.

Abstract: A dry sprinkler for a fire protection system. The preferred dry sprinkler has a metallic disc annulus positionable within a passageway to skew a central axis of a face of the metallic disc annulus with respect to a longitudinal axis of the dry sprinkler so that an expected minimum flow rate based on a rated discharge coefficient is provided. The dry sprinkler operates to provide an expected flow rate over a range of start pressures. The expected flow rate is based on a K-factor rating. The dry sprinkler provides an acceptable level of fluid flow rate from the expected flow rate based on the K-factor for a range of start pressures.

Abstract: A sprinkler head cover including an end wall and a side wall extending from and around the end wall to form a cavity therebetween. The cavity is sized for receiving a deflector and arms of a sprinkler head. The side wall is adapted for engaging the sprinkler head to thereby releasably mount the cover to the sprinkler head.

Abstract: A dry sprinkler is provided including a structure, a fluid deflecting structure, a locator, a metallic annulus and a shield. The structure defines a passageway extending along a longitudinal axis between an inlet and an outlet with a rated K-factor defining an expected flow of fluid in gallons per minute from the outlet divided by the square root of the pressure of the flow of fluid fed into the inlet of the passageway in pounds per square inch gauge. The fluid deflecting structure is proximate the outlet. The locator is movable along the longitudinal axis between a first position and a second position and supports the metallic annulus which includes first and second metallic surfaces spaced apart along the longitudinal axis between an inner and outer circumference. The shield has a first face exposed to the inlet and a second face confronting the first metallic surface to define a gap therebetween.

Abstract: A sprinkler assembly can utilize an adapter having straight threads and an internal sealing member therein to attach the sprinkler to a piping system. The sprinkler may include tapering threads that engage with the straight threads of the adapter and compress the sealing member therein to form a fluid-tight seal. A sprinkler assembly can utilize a fitting that is attached to an extension member containing the sprinkler. The fitting allows the sprinkler and extension member to be coupled to the piping system with a solvent weld. A sprinkler assembly can utilize an attachment system to couple a sprinkler attached to an extension member to a piping system. The attachment system can include a first fitting attached to the connection member, a second fitting attached to the piping system, and a clamping member to clamp the two fittings together.

Abstract: A fuse type sprinkler has a body which is fastened to a drain pipe for spraying water through a drain formed inside, a valve of which an upper end is inserted into the drain of the body and to which a sealing unit is mounted along an upper end circumference to press and seal an inner surface of the drain, a frame which is fastened to the body to surround the valve and is provided with a hook on a lower end inner peripheral surface, a heat sensing unit which supports a lower end of the valve to allow an upper end of the valve to be inserted into the drain while being hooked by the hook of the frame, and is provided with a fuse which is separated from the frame to fall off when the fuse is fused by heat, and a deflector which is positioned inside the frame and falls off and is hung on the hook when the heat sensing unit is separated to distribute water sprayed through the drain.

Abstract: A sprinkler head and a method for testing the sprinkler head, including an inlet device to lead fire-extinguishing medium and air from a distribution system into the sprinkler head, an outlet device to release fire-extinguishing medium and air from the sprinkler head, a flow passage to lead fire-extinguishing medium and air from the inlet device to the outlet device, a valve to be held in first non-activated state by a triggering device in the sprinkler head, so the flow passage is closed, and in activated state to open the flow passage, when the triggering device is activated in a heated state, so air and fire-extinguishing medium may flow from the inlet device to the outlet device. The valve in a second non-activated test state operatively opens the flow passage, so air and fire-extinguishing medium may flow from the inlet device through the flow passage and out through the outlet device.

Abstract: The present invention relates to a spray head for effective fire fighting. The spray head according to the present invention provides a uniform distribution of a fluid, such as pressurised water, over a relatively large area. To achieve this, the spray head comprises a body defining a central axis and further comprising a fixation structure for fixing the spray head to a fluid supply system, a fluid inlet, directing fluid in a first direction, a plurality of outlet holes arranged around the central axis, and a flow path between the inlet and the holes, wherein a first set of holes are located in such a way, that the fluid is leaving the first set of holes in a second direction opposite to the first direction and wherein the body further comprises an arrangement for holding a fire actuation member.

Abstract: Fire-extinguishing agent supplying equipment pressurizes a water-based fire-extinguishing agent and supplies the agent via a pipe; and the water-based fire-extinguishing agent is pressurized and supplied via the pipe to an electrification spray head installed in a protection area A, and the jetted particles of the fire-extinguishing agent are electrified and sprayed from the electrification spray head. A pulsed or alternating electrification voltage is applied to the electrification spray head from a voltage application unit 15, and an external electric field generated by applying the voltage between a water-side electrode unit and an induction electrode unit is applied to the fire-extinguishing agent in a jetting process to electrify the jetted particles.

Abstract: A fire sprinkler support assembly includes a leg configured to extend transverse to each of a pair of adjacent parallel spaced beams. The leg includes levered clamp assemblies that are configured for connecting and supporting each end of the leg to a corresponding one of the beams. The levered clamp assemblies include a first plate and a second plate, each plate configured to straddle the beam. The levered clamp assemblies also include a lever assembly. The lever assembly includes a rod passing through corresponding rod openings in the first and second plates, and a lever pivotally connected to one end of the rod. The lever includes a cam surface disposed adjacent to the first plate. The lever assembly is configured to reduce spacing between the plates upon actuation of the lever, whereby the leg is secured to the beam.

Abstract: A sprinkler assembly includes a body, a support, which extends from the body, and a closure device that releasably closes the discharge opening of the body. The sprinkler assembly further includes a trigger that releasably holds the closure device at the discharge opening. The support is adapted to allow the fluid flowing from the discharge opening, when the closure device is released, to pass through the support substantially unimpeded by the support and, further, is adapted to reshape the flow of fluid as it flows through the support.

Abstract: A dry sidewall sprinkler and system and methods of installation provide extended coverage for ordinary hazard commodities. The preferred sprinkler and systems provide for sidewall ordinary hazard fire protection beneath a sloped or horizontal overhang extending from a structure by at least ten feet proximate to a garage or loading dock in accordance with applicable sections of NFPA-13 (2007).

Abstract: An upright ESFR sprinkler includes a generally tubular body, at least one frame arm, a closure assembly, an unactuated heat responsive trigger assembly and a deflector assembly with a K-factor greater than 14, and preferably 16.8. The passageway extends between inlet and outlet openings. The closure is positioned proximate the outlet so as to occlude the passageway with a Bellville seal being. An ejection spring is coupled to the closure assembly. The heat responsive trigger assembly has a Response Time Index of 40 meter1/2second1/2 (m1/2sec1/2) or less. The deflector assembly includes a nosepiece and a plate like redirecting member. The plate like redirecting member faces the outlet and is coupled to the at least one frame arm and spaced from the outlet opening. The plate shaped member includes a first generally planar portion, a conical second portion, and a third portion extending from the conical second portion.