Abstract: A fire protection method includes providing a plurality of pendent control mode specific application extended coverage fire protection sprinklers as components of a fire protection sprinkler system for a storage area defined by a storage height of at least 25 feet and a building height of at least 30 feet. Each sprinkler has a thermally responsive element, a deflector, and a K-factor of at least 25.2 gpm/(psi)1/2, and is connected to a piping network at a height greater than the storage height. When each sprinkler is activated, a fluid is supplied to the sprinkler from the piping network at a pressure of at least 30 pounds per square inch, and is delivered to a coverage area of greater than 110 and up to and including 196 square feet per sprinkler. A design operating area of the sprinkler system is up to six sprinklers or 1200 square feet.

Abstract: A fire protection sprinkler includes a body having an inlet end, including a threaded base configured to connect to a fluid supply conduit, an outlet end, and a water passage defined therein. The water passage includes an inlet orifice, provided at the inlet end of the body, an output orifice, provided at the outlet end of the body, and an interior surface formed of a material having a weighted average lead content of 0.25% or less. A seal cap, that moves between a closed position, in which the seal cap seals the output orifice of the water passage, and thereby prevents flow of a fluid from the fluid supply conduit through the output orifice, and an open position, in which the seal cap does not seal the output orifice of the water passage, has water-exposed surfaces formed of a material having a weighted average lead content of 0.25% or less.

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 method of using a residential fire protection sprinkler. The method includes providing a fluid supply conduit extending along a ceiling, having a pitch up to 12/12, at a predetermined distance relative to the ceiling and connected to a source of fluid having a predetermined source pressure. The method also includes connecting at least two residential fire protection sprinklers to the fluid supply conduit such that the sprinklers are spaced at least eight feet (8?) apart from one another, wherein the sprinklers have a K-factor of at least 2.8. A residential fire protection sprinkler system is also provided. The system includes a fluid supply conduit extending along a ceiling, having a pitch of up to 12/12, at a predetermined distance relative to the ceiling and connected to a source of fluid having a predetermined source pressure.

Abstract: A sidewall fire protection sprinkler, including a deflector having a central portion curved about a first, horizontal axis that is transverse to a second axis that extends in an output direction of the sprinkler. End portions extend outwardly from the central portion along the first axis, the end portions each respectively including an upper part and a lower part separated by a gap which defines an elongated notch extending between the upper part and the lower part at an innermost portion of the gap adjacent to the central portion. The gap is formed extending outwardly from the central portion substantially along the first axis. Planar portions extend respectively from top edges of the upper parts of the end portions. The planar portions extend in the output direction. The sprinkler can provide extended coverage ordinary hazard protection.

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 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 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 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 method of using a residential fire protection sprinkler. The method includes providing a fluid supply conduit extending along a ceiling, having a pitch up to 12/12, at a predetermined distance relative to the ceiling and connected to a source of fluid having a predetermined source pressure. The method also includes connecting at least two residential fire protection sprinklers to the fluid supply conduit such that the sprinklers are spaced at least eight feet (8?) apart from one another, wherein the sprinklers have a K-factor of at least 2.8. A residential fire protection sprinkler system is also provided. The system includes a fluid supply conduit extending along a ceiling, having a pitch of up to 12/12, at a predetermined distance relative to the ceiling and connected to a source of fluid having a predetermined source pressure.

Abstract: A sidewall fire protection sprinkler, including a deflector having a central portion curved about a first, horizontal axis that is transverse to a second axis that extends in an output direction of the sprinkler. End portions extend outwardly from the central portion along the first axis, the end portions each respectively including an upper part and a lower part separated by a gap which defines an elongated notch extending between the upper part and the lower part at an innermost portion of the gap adjacent to the central portion. The gap is formed extending outwardly from the central portion substantially along the first axis. Planar portions extend respectively from top edges of the upper parts of the end portions. The planar portions extend in the output direction. The sprinkler can provide extended coverage ordinary hazard protection.

Abstract: A fire protection method is provided that comprises providing at least one special application control mode extended coverage sprinkler for storage applications having a K-factor of at least 14 that is connectable to a piping network to protect commodity hazards including class one through four and cartoned unexpanded plastics, as defined in National Fire Protection Association Standard 13 and FM Global Property Loss Prevention Data Sheets 8-1 and 8-9, stored in a storage area defined by a storage height of at least 25 feet, and a building height of at least 30 feet, wherein the sprinkler provides coverage to an area of at least 144 square feet. The method also includes connecting the at least one sprinkler to the overhead piping network at a height at least equal to the storage height, activating the sprinkler in the event of a fire condition sensed by the sprinkler head, and delivering a fluid fed to the sprinkler to a coverage area of at least 144 square feet.

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 sidewall fire protection sprinkler including a deflector having a central portion curved about a transverse axis from an output direction of the sprinkler. End portions extend along the transverse axis outwardly from the central portion. The end portions have an upper part and a lower part separated by a gap. Planar portions extend in the output direction from a top edge of the end portions.

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: 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: 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 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: In the particular embodiments disclosed in the specification, a residential sprinkler arrangement includes a sprinkler body with an axial passage having an outlet opening providing a K factor of about 4 to about 6 which is normally closed by a cap retained in position by a thermally responsive element and a planar deflector spaced from the outlet opening and supported from the sprinkler body by a pair of frame arms. The deflector has a circumferential array of peripheral slots, a first set of which, located in the plane of the frame arms, has a length greater than that of any of the other slot-like openings and a second set of which, located in the plane perpendicular of the plane of the frame arms, has a length less than that of the first set but greater than that of any of the other slots.