Abstract: A residential sidewall sprinkler and system for a coverage area defined by a pair of parallel vertical walls. The sprinkler includes a body having a passageway defining a K-factor of about 6. The body has an inlet coupled to a fluid supply line and a distal end coupled to a deflector assembly. The deflector assembly includes a face portion with an upper canopy and a lower canopy disposed about the face portion. The sprinkler is mounted to one of the walls to define a ceiling-to-deflector distance ranging from about four inches to about twelve inches. The fluid supply at the inlet is at least at one of a substantially constant flow rate of fluid and substantially constant fluid pressure. The deflector assembly distributes the fluid over the coverage area so as to wet the vertical walls within about twenty-eight inches of the ceiling over the ceiling-to-deflector range.

Abstract: A fire suppression system is disclosed. The system includes a gaseous extinguishing agent and a liquid extinguishing agent. At least one emitter is in fluid communication with the liquid and gas. The emitter is used to establish a gas stream, atomize and entrain the liquid into the gas stream and discharge the resulting liquid-gas stream onto the fire. A method of operating the system is also disclosed. The method includes establishing a gas stream having first and second shock fronts using the emitter, atomizing and entraining the liquid with the gas at one of the two shock fronts to form a liquid-gas stream, and discharging the stream onto the fire. The method also includes creating a plurality of shock diamonds in the liquid-gas stream discharged from the emitter.

Abstract: A fire sprinkler illumination system for use with ceiling mounted fire sprinkler heads, which includes a plurality of light emitting diodes (LEDs) carried by said sprinkler heads, a source of electrical energy connected to the LEDs to provide electricity, which can be a low voltage transformer power supply connected to a source of 120 Volt AC electricity, may include an emergency battery backup electrical power supply, or be connected to a water powered electric generator turbine.

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: A horizontal dry fire protection sprinkler includes a housing having a vertical segment and a horizontal segment extending generally perpendicular to the vertical segment. The vertical segment defines an inlet opening. A plug member is disposed in the inlet opening for sealingly closing the inlet opening. A sprinkler is attached to the horizontal segment and includes a base having a passage extending therethrough and defining an outlet opening. A cap is disposed in the outlet opening and a heat sensitive trigger engages the cap. A translation mechanism is disposed in the housing and engaging the cap and supporting the plug member in the inlet opening, wherein when the heat sensitive trigger releases support of the cap, the translation mechanism is allowed to move within said housing to allow the plug member to dislodge from the inlet opening.

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: A pendent type residential fire sprinkler is described. The residential fire sprinkler has a body with a K-factor of at least 6 passage coupled to a deflector assembly that distributes fluid flowing through the passage over a coverage area to perform in accordance with Underwriters Laboratory Standard 1626 (October 2003) for listing by Underwriters Laboratory Incorporated so that the body and a heat responsive trigger disposed between the passage and the deflector assembly of the sprinkler can be installed in accordance with the 2002 Edition of National Fire Protection Association Standards 13, 13D, and 13R. Various aspects of the residential fire sprinkler, including a method of protecting a residential dwelling unit are described.

Abstract: A fire safety system includes a sensor arrangement and control scheme for quickly sensing a fire, accurately identifying its location, and controlling a set of ceiling fans and overhead sprinklers to efficiently extinguish the fire. The fire safety system is particularly suited for large buildings such as warehouses, factories, gymnasiums, retail stores, auditoriums, convention centers, theaters or other buildings with large open areas. In some examples, the overhead fans are disabled prior to activating the sprinklers. The placement of the fire sensors, in some cases, are selected upon first considering the location of the overhead fans.

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 centre axis and further comprising a fixation structure for fixing the spray head to a fluid supply system, a fluid inlet, a plurality of outlet nozzles arranged around the centre axis, and a flow path between the inlet and the nozzles, wherein a first set of nozzles are located at a larger radial distance from the centre axis than a second set of nozzles, and wherein the second set of nozzles are located at a larger radial distance from the centre axis than a third set of nozzles, and wherein the nozzles comprise an essentially identical expansion passage section. The present invention further relates to method for providing a uniform fluid distribution.

Abstract: Provided are apparatuses, systems, methods, computer readable storage media and other means for performing overhead service of machines. A staging assembly may be used that includes one or more platforms, each having a bottom surface, a floor, and two or more railing support structures. The staging assembly can be suspended, using a suspension system, from one or more support structures disposed on a ceiling. One or more driving means can also be used to drive the staging assembly or other equipment (such as a hoist assembly) along a path that may be defined by a support structure. The driving means can also be automated and/or activated in response to, for example, one or more commands generated by a central control processor. The central control processor, staging assemblies and/or other equipment can all include computer readable media which comprises instructions to perform various tasks, some examples of which are discussed herein.

Abstract: A pendent fire protection sprinkler for storage applications, having a body including a fluid passage and an output orifice sealed with a seal cap, two arms extending from the body and meeting at a hub, a release mechanism with a thermally-responsive element positioned between the seal cap and the hub, and a deflector positioned on the hub and facing the output orifice. The deflector has aligned slots at about 90° from each other, corner slots located between the aligned slots, and angled slots located between the aligned slots and the corner slots.

Abstract: The fire sprinkler head comprises a water supply pipe including a pipe and a joint coupling to the pipe and forming a connecting end opposite to the pipe; a mount including a cavity formed on the top thereof and adapted to receive the connecting end, a hole defined on the bottom of the cavity, an edge surrounding the hole with a first end and a second end, a recess defined between the first and the second end of the edge and a housing; a nozzle device defining a first end with exterior threads adapted to engage the edge of the mount to the connecting end of the water supply pipe, a second end having an engaging portion and a nozzle, and a hollow; a cover device including a cover, an opening formed in the center of the cover and a plurality of lugs around the opening.

Abstract: An apparatus for delivering fire suppressant to a confined space, such as a trash dumpster, is disclosed. The unit attaches to the wall of the confined space and allows the operator to use it to suppress the fire from a safe distance.

Abstract: A sprinkler head assembly includes a sprinkler head body, a frame including a pair of arms extending from the body from opposed sides of the body, and a deflector mounted to the frame spaced from the outlet opening of the sprinkler head body for deflecting fire extinguishing liquid flowing from the outlet opening. The sprinkler head assembly is adapted to direct a greater proportion of the fire extinguishing liquid from one side of the sprinkler body than the other side of the sprinkler body.

Abstract: A spraying head, especially a spraying head intended for fire extinguishing, which comprises a frame part, an inlet for extinguishing medium and at least two nozzles. At least one first nozzle (9) is arranged in a spraying head part (2), for which first nozzle (9) the medium passage from the inlet of the spraying head is always open and that at least one second nozzle (4) is arranged in a sprinkler part (1) which comprises a triggering means (5), whereby the passage of medium from the inlet to at least one second nozzle (4) is closed when the triggering means (5) is non-activated, and that the passage of medium for at least one second nozzle (4) is open when the triggering means (5) is activated. The invention also relates to a method.

Abstract: An object of the present invention is to provide a sprinkler head having a heat-sensitive decomposition structure provided by a link comprising two sheets of metal plates connected together by means of a fusible alloy, characterized in that the applied load is uniformly distributed over the link and that the sprinkler head is highly impact-resistant. In a sprinkler head of the present invention, each of a pair of levers 5 to be engaged with the link 6 is formed into an L-shape, and a space is formed in a bent portion 22 of the L-shape, wherein respective bent portions 22 are held in contact with each other. In addition, the bent portions 22 are provided with a specific contact region such as a mating construction so that respective levers can be held in position.

Abstract: A sprinkler of the compressed strut and lever type wherein the motion of the lever is limited is disclosed. The sprinkler includes a compression member that compresses a strut against a sealing member that closes the outlet of the sprinkler. One end of a lever is positioned between the compression member and the strut. The opposite end is positioned in proximity to an abutment surface on the sprinkler. The opposite end is engageable with the abutment surface which limits motion of the lever and maintains an offset between the strut and the compression member that renders the strut and lever an unstable mechanism. A frangible link extends between the strut and the lever. The link separates in response to an increase in temperature indicative of a fire condition.

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: An object of the present invention is to provide a sprinkler head cover comprising a cylindrical retainer having a sprinkler head housed inside it, and a cover plate in the form of plate to be connected to a flange formed in a lower end of the retainer, which sprinkler head cover would not block the dispersing water during water dispersion upon activation of the sprinkler head, and would not deteriorate the bonding strength between the retainer and the cover plate. Each of a plurality of legs 6 extending downward from a lower end of a retainer 1 is configured to bend so that the tip portion of the leg is horizontally oriented, and also to have a smaller cross sectional area of a downward extending segment 9 than that of a horizontal segment 7 of the tip portion of each leg. Alternatively, the leg 6 may be configured to extend downward radially and to be bent such that its tip portion is horizontally oriented.

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: The present invention provides a spray device for fire fighting, which sprays atomized water to extinguish a fire. The spray device (100) includes an upper body (10), a lower body (20) which is removably coupled to the upper body (10), a nozzle tip (30) which has a swirl (39) therein and is removably inserted into each nozzle tip hole (22) of the lower body (20), and an interposition unit (40). The spray device (100) further includes an inclined surface (16), a tightening contact surface (19-1) provided on an outer surface of a circular head part (19) of the upper body (10), a working groove (26) to provide an internal thread (25) on the lower body (20), and a hemispherical mesh (42) which has a convex shape and is provided in a chamber (41) defined at a center position between the upper body (10) and the lower body (20).

Abstract: A fire protection system includes a conduit, with a fluid passageway for receiving fire suppressant fluid from a fire suppressant fluid supply, a discharge device in fluid communication with the conduit for dispersing the fire suppressant fluid and at least one surface at the conduit or the discharge device across which the fire suppressant fluid flows, which surface has a plurality of channels extending across the surface in a direction generally orthogonal to the flow of fluid.

Abstract: The invention concerns a device for protecting premises in particular a tunnel against fire, consisting of a circular housing open at its two ends and deisgned to be fixed in the upper part of the premises to be protected such that its median axis (XX?) is substantially vertical, said housing comprising a substantially cylindrical lower part and an upper part substantially tapered in the shape of a bell, and containing part of vacuum-producing means capable of accelerating air circulation in and around the housing and spray means capable of injecting fine water droplets in the resulting circulating air.

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 therebetween.

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: An anti-skipping sprinkler includes a frame defining a central longitudinal axis, the frame including a base portion defining an orifice, and first and second arms extending away from the base portion and joining at a lower end of the frame; a deflector located at the lower end of the frame; an orifice plug held over the orifice by a trigger element including a heat sensitive element; and an anti-skipping shield extending circumferentially around the heat sensitive element. The anti-skipping shield has an upper end and a lower end. The anti-skipping shield is open at the upper end and at the lower end to permit airflow to the heat sensitive element around the upper end and the lower end of the anti-skipping shield.

Abstract: A sprinkler head cover including a housing adapted to be attached to a sprinkler head which is connected to a water supply piping and in which, in the case of fire, a valve disposed inside the sprinkler head is opened to allow a fire-extinguishing liquid in the water supply piping to be dispersed. A cover plate is adapted to cover the sprinkler head so that the sprinkler head cannot be seen from outside, and a mount is installed in the housing and has a hole inside thereof. The cover plate and the mount are connected to each other by a low melting point alloy melted out from the hole, and a heat collector of the sprinkler head has a structure for allowing the heat collector to come into contact with the cover plate.

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 pendant sprinkler preferably includes a body having an inner surface defining a passageway. The passageway includes an inlet and an outlet spaced apart along the longitudinal axis and defines a K-factor of about 5. The sprinkler also includes a closure assembly adjacent the outlet to occlude the outlet and a thermally responsive support means for maintaining the closure assembly adjacent the outlet. Also provided are means for distributing a flow of fluid over a protection area ranging from about 144 square feet to about 400 square feet, the fluid distribution having a density of at least 0.05 gallons per minute per square foot (0.05 gpm/ft2) so as to define a range of minimum operating pressures ranging from about seven pounds per square inch to about seventeen pounds per square inch (7-17 psi.) and a range of minimum operating fluid flows ranging from about thirteen gallons per minute to about twenty gallons per minute (13-20 gpm.).

Abstract: A rotatable sprinkler head apparatus has a sprinkler body and a sprinkler swivel having attaching means for attaching a rotatable sprinkler head apparatus to a source of water. The swivel has a bore therethrough. A spindle has a bore therethrough and is rotatably mounted through the sprinkler swivel bore and connected at one end to the sprinkler body and having a flange at the opposite end thereof. A washer stack has a plurality of washers thereon mounted around said spindle between said spindle flange and said swivel. The washer stack includes a wear washer having an annular generally external ledge for forming a generally L-shape cross section rotatable with the spindle in an annular generally stationary washer adjacent to the swivel and riding on the wear washer external ledge without touching the spindle so that spindle wear is reduced by the wear washer rotating relative to the generally stationary washer.

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 pendent residential fire prevention sprinkler has a frame structure extending from the sprinkler body, and a system for blocking an outlet to prevent fluid from passing through the outlet until occurrence of a predetermined condition and for unblocking the outlet in response to occurrence of the condition. A deflector is supported by the frame structure at a predetermined distance from the outlet, at a position to be impinged upon by the fluid leaving the outlet. The deflector has a central portion and a peripheral portion, and slots formed in the periphery, defining tines therebetween. The slots include a first plurality of slots, each of which extends inward from the deflector periphery with a uniform width, a second plurality of slots, each of which has a first portion and a second portion between the deflector periphery and the slot's closed end, where the first portion has a width that varies at different points, while the second portion has a uniform width.

Abstract: A fire protection sprinkler is provided, including a body having an output orifice and a flange and a seal cap to seal a flow of fluid from the output orifice. A thermally-responsive element is 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. A deflector is connected to ends of the rods.

Abstract: A building inside fire extinguishing system, the building having a standard roof pitch and corresponding peak angle. The system including a main water supply line extending along the base or lower margin of the roof and having spaced parallel upright pipe nipples attached to the main water supply line, a plurality of feed lines extending upwardly from the main water supply line parallel to the roof and a plurality of spaced water sprinkler heads operably attached to each of the feed lines. To interconnect the upper end of each upright nipple, an array of roof slope sprinkler fittings is provided, one of which is selected angularly matching the roof pitch. These sprinkler fittings each include an angled hollow body having a female threaded inlet and a female threaded outlet angularly oriented at different standard roof pitch angles one of which will equal the standard pitch of the roof. Each fitting is threadable directly to and between the pipe nipple and a lower end of the feed line.

Abstract: A nondestructive retrofit fire sprinkler protection system including a sprinkler fitting with a unique shape that inserts behind a wall surface and that securely connects a sprinkler head emerging from a wall location to preferably concealed sprinkler piping located in a room at a point where the ceiling surface meets a wall surfaces. In addition, a room coupler fitting is adapted to be inserted between wall structures to connect sprinkler piping in adjacent rooms.

Abstract: Embodiments of the invention provide a stationary fire fighting system for retrofitting into a structure. The system can include a flowmeter in fluid communication with a water line in the structure. The flowmeter can generate a flow rate signal. The system can include a controller connected to the flowmeter and a proportioner pump connected to the controller. The system can include an additive supply tank in fluid communication with the proportioner pump. The controller can operate the proportioner pump based on the flow rate signal to provide additive from the additive supply tank to the water line to create a solution. The system can include at least one sprinkler head to distribute the solution within the structure.

Abstract: A waste water containment, filtration, and transportation system captures polluted waste water from various waste water sources including fire sprinkler systems and fire hydrants. The system includes a sight tube which connects to a female swivel connection on, for example, a Fire Department Connection (FDC). A flexible hose connects the sight tube to a mobile holding tank. The sight tube allows the observation of a waste water flow from the fire sprinkler system or fire hydrant to ensure that a complete flushing has been accomplished. A rod attached to an end of the sight tube holds a clapper in the FDC open during testing. The waste water is held in the mobile holding tank for later disposal. The containment and transportation system allows compliance with NFPA Standards, California State Fire Marshal's “Title 19 Regulations, the Federal Clean Water laws, the Federal Coastal Zone laws, as well as local city ordinances.

Abstract: A sprinkler head shut off device, comprising of a handle with at least one jaw, a lever, a stopper arm, and a means for reciprocating the stopper arm as the lever is rotated, in order to bring a portion of the stopper arm in contact with the orifice of the sprinkler and stop water flow. The device further comprises a locking means to lock the lever in position. The locking means comprises a member attached to the lever which locks its rotary motion in one direction at a particular position by engaging with a portion of the means for reciprocating the stopper arm.

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: An apparatus for blocking a medium flow passage in a spray head has a blocking element in the passage that, when unbroken, blocks the passage of medium from a first side having a first pressure to a second side having a second pressure. A supporting element is on that side of the blocking element where the pressure is lower, the supporting element being movable between a first position where the supporting element supports the blocking element so that it cannot be ruptured and a second position where the supporting element does not so support the blocking element.

Abstract: An early suppression fast response fire protection system includes a sprinkler piping system with at least one sprinkler head assembly, a water supply system, and a check valve in fluid communication with the sprinkler piping system and the water supply system. An antifreeze solution supply system is in fluid communication with the sprinkler piping system, with the check valve isolating the antifreeze solution from the water supply unless a fire condition occurs.

Abstract: A discharge assembly used with a fire suppression delivery system comprises a nozzle having an outer nozzle surface and inlet and discharge ends. The inlet end receives fire suppression agent and the discharge end dispenses fire suppression agent through an orifice. A blow-off cap has an open-ended cavity shaped to receive the discharge end of the nozzle and cover the orifice. The cavity includes an interior cap surface located in close proximity to the outer nozzle surface of the nozzle when the blow-off cap is mounted on the discharge end of the nozzle. A receptacle is formed in at least one of the outer nozzle surface of the nozzle and the interior cap surface of the blow-off cap. A retention element fits within the receptacle and engages the outer nozzle surface and interior cap surface, providing a predetermined amount of retention resistance to retain the blow-off cap on the nozzle.

Abstract: An early suppression fast response fire protection system includes a sprinkler piping system with at least one sprinkler head assembly, a water supply system, and a check valve in fluid communication with the sprinkler piping system and the water supply system. An antifreeze solution supply system is in fluid communication with the sprinkler piping system, with the check valve isolating the antifreeze solution from the water supply unless a fire condition occurs.

Abstract: [Problems] To provide a sprinkler head installed by burying it in a ceiling, having a cover plate to conceal the sprinkler head, enabling the adjustment of the height of the sprinkler head relative to the surface of the ceiling, and capable of efficiently transferring the heat of flame absorbed by the cover plate to the heat sensitive body of the sprinkler head. [Means for Solving Problems] A heat collector (15) having a plurality of fins (14) in the radial direction is fitted to the heat sensitive body of the sprinkler head, and the fins (14) are bent in a diagonal lower side by a plurality of bent parts (16). A disk-like heat collector (13) is stackingly installed on the upper part of the heat collector (15), and ribs (13A) and (13B) formed on the heat collector (13) are installed at positions where the bent parts (16) are not interfered with the ribs (13A) and (13B) when the heat collector (15) is contracted.

Abstract: A bracing apparatus for bracing a flexible pipe extending between a fire sprinkler header pipe and a sprinkler and for holding the sprinkler in a desired location, a flexible piping system having the bracing apparatus, and a method of installing a sprinkler of a sprinkler system having the bracing apparatus. The bracing apparatus has first mounting members that attach to a flexible pipe, and a stiffener bar that extends between the first and second mounting members.

Abstract: A method for spraying a medium mist, especially a medium mist used in firefighting, over a large area, in which method at least two sprays of medium mist are formed, of which a first spray (S1) is within a second medium mist spray (S2) at least at or near the spraying point. During the formation of the sprays (S1, S2), the medium is set into a swirling motion at least before the discharge opening (5, 13) of the nozzle used to form each spray (S1, S2) and/or at least before the sprays (S1, S2) are mixed with each other, and that the swirling directions of the medium in different sprays (S1, S2) are opposite to each other, whereby a preferably homogeneous mist spray spread over a large area is achieved.

Abstract: A sprinkler wedge designed for inhibiting water discharge from an open or activated sprinkler head. The sprinkler wedge generally comprises a main body having proximal and distal ends, A handle assembly connected toward the proximal end for easy grasping by a human hand, and a forked tip toward the distal end. The sprinkler wedge is designed for improved single-handed insertion into the water stream of an activated sprinkler head.

Abstract: A horizontal sidewall fire protection sprinkler is provided, including 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 a total length of the horizontal shelf in the fluid flow direction. The sprinkler is installed in a support cup having a raised mounting platform configured to receive the sprinkler body and a cylindrical outer surface, with a front edge in a fluid flow direction, and a back edge. The mounting platform of the support cup is closer to the front edge of the support cup in an axial direction thereof than to the back edge.

Abstract: An enhanced protection extended coverage pendent fire protection sprinkler has a body including a fluid passage and an output orifice sealed with a seal cap, two arms extending from the body and meeting at a hub, a release mechanism with a thermally-responsive element positioned between the seal cap and the hub, and a deflector positioned on the hub and facing the output orifice. The deflector includes a pair of aligned slots, aligned with a plane of the arms, and a pair of perpendicular slots, perpendicular to the aligned slots and having a width that is less than that of the aligned slots. The deflector further includes a pair of corner slots, positioned between the aligned slots and the perpendicular slots. Angled slots are positioned between the aligned slots and the corner slots and between the perpendicular slots and the corner slots.

Abstract: A retracting telescoping automatic fire sprinkler is disclosed. In a dry system, the sprinkler extends to its operating position under system pressure that is applied in response to a preaction signal. When system pressure is removed, as in after a test is completed, the sprinkler automatically retracts to its original position.