Abstract: A concealable sprinkler head includes a frame having a body mountable to a fire suppression liquid source, a pair of frame arms and a pair of corresponding drop pins slidably engaged with a respective frame arm. A thermal trigger is supported within the sprinkler frame. A fluid deflector is secured to the drop pins and includes a generally horizontal surface. The drop pins extend substantially orthogonally from the horizontal surface. An inclined surface of the fluid deflector extends angularly upwardly from the horizontal surface. A concealing cup surrounds the frame arms. A cover plate is attached to the concealing cup, covering the distal end thereof, wherein the drop pins and the deflector are positioned within the concealing cup. The cover plate is removable from the concealing cup permitting the drop pins and the deflector to axially slide out of the concealing cup into an operational position.

Abstract: A concealable sprinkler head includes a frame having a body mountable to a fire suppression liquid source, a pair of frame arms and a pair of corresponding drop pins slidably engaged with a respective frame arm. A thermal trigger is supported within the sprinkler frame. A fluid deflector is secured to the drop pins and includes a generally horizontal surface. The drop pins extend substantially orthogonally from the horizontal surface. An inclined surface of the fluid deflector extends angularly upwardly from the horizontal surface. A concealing cup surrounds the frame arms. A cover plate is attached to the concealing cup, covering the distal end thereof, wherein the drop pins and the deflector are positioned within the concealing cup. The cover plate is removable from the concealing cup permitting the drop pins and the deflector to axially slide out of the concealing cup into an operational position.

Abstract: A fire protection system is provided for a space having a roof including a pitched portion and at least one end portion having a hip, sloping downward from an apex substantially coinciding with an end of the pitched portion toward an eave and extending outward toward the ends of the sides of the pitched portion. The hip may have a lower hip, including jack trusses, and an upper hip, including stepdown trusses. Within the upper hip, at least two rows of sprinklers may be placed, with a first row of sprinklers located substantially at the apex. The maximum allowable spacing between sprinklers in a direction perpendicular to the slope of the hip may be greater than a maximum allowable spacing between rows of sprinklers, i.e., in a direction parallel to the slope of the hip.

Abstract: A wet piping system modular valve assembly includes a single piece valve body with a check valve within the valve body. The check valve is movable between a closed position and an open position according to a pressure differential across the check valve. A drain valve is removably mounted to the valve body and fluidly connected with the valve body downstream of the check valve. A mechanically independent flow detection switch is removably mounted to the valve body and fluidly connected with the valve body upstream of the drain valve.

Abstract: A concealable sprinkler head includes a frame having a body mountable to a fire suppression liquid source, a pair of frame arms and a pair of corresponding drop pins slidably engaged with a respective frame arm. A thermal trigger is supported within the sprinkler frame. A fluid deflector is secured to the drop pins and includes a generally horizontal surface. The drop pins extend substantially orthogonally from the horizontal surface. An inclined surface of the fluid deflector extends angularly upwardly from the horizontal surface. A concealing cup surrounds the frame arms. A cover plate is attached to the concealing cup, covering the distal end thereof, wherein the drop pins and the deflector are positioned within the concealing cup. The cover plate is removable from the concealing cup permitting the drop pins and the deflector to axially slide out of the concealing cup into an operational position.

Abstract: A storage occupancy sprinkler system is provided, which includes a fluid supply system, at least one cross-main pipe fluidly connected with the fluid supply system, a plurality of branchlines extending from, and are fluidly connected with, the at least one cross-main pipe, and a plurality of storage sprinkler heads projecting from, and fluidly connected with, the plurality of branchlines. The storage sprinkler heads have a k-factor of at least 11.2 and a sprinkler rating greater than 175 psi.

Abstract: A fire protection system is provided for a space having a roof including a pitched portion and at least one end portion having a hip, sloping downward from an apex substantially coinciding with an end of the pitched portion toward an eave and extending outward toward the ends of the sides of the pitched portion. The hip may have a lower hip, including jack trusses, and an upper hip, including stepdown trusses. Within the upper hip, at least two rows of sprinklers may be placed, with a first row of sprinklers located substantially at the apex. The maximum allowable spacing between sprinklers in a direction perpendicular to the slope of the hip may be greater than a maximum allowable spacing between rows of sprinklers, i.e., in a direction parallel to the slope of the hip.

Abstract: A fire protection system is provided for a space having a roof including a pitched portion and at least one end portion having a hip, sloping downward from an apex substantially coinciding with an end of the pitched portion toward an eave and extending outward toward the ends of the sides of the pitched portion. The hip may have a lower hip, including jack trusses, and an upper hip, including stepdown trusses. Within the upper hip, at least two rows of sprinklers may be placed, with a first row of sprinklers located substantially at the apex. The maximum allowable spacing between sprinklers in a direction perpendicular to the slope of the hip may be greater than a maximum allowable spacing between rows of sprinklers, i.e., in a direction parallel to the slope of the hip.

Abstract: A test, drain and adjustable pressure relief module for a sprinkler system has a single body with three independent and fluidly connectable flow ports. A first port of the three flow ports is fluidly connectable at an inlet side thereof to the sprinkler system. A second port of the three flow ports has an adjustable pressure relief valve removably mounted to an outlet thereof. The valve is biased into a closed position and a threshold pressure is required to open the valve and discharge fluid is selectively adjustable. A third port of the three flow ports has an open outlet end configured to removably connect with a drainage pipe. The three ports form a Tee connection and have a flow valve therebetween to selectively direct flow between an outlet of the first port and at least one of the respective inlets of the second and third ports.

Abstract: A wet piping system modular valve assembly includes a single piece valve body with a check valve within the valve body. The check valve is movable between a closed position and an open position according to a pressure differential across the check valve. A drain valve is removably mounted to the valve body and fluidly connected with the valve body downstream of the check valve. A mechanically independent flow detection switch is removably mounted to the valve body and fluidly connected with the valve body upstream of the drain valve.

Abstract: A fire protection system is provided for a space having a roof including a pitched portion and at least one end portion having a hip, sloping downward from an apex substantially coinciding with an end of the pitched portion toward an cave and extending outward toward the ends of the sides of the pitched portion. The hip may have a lower hip, including jack trusses, and an upper hip, including stepdown trusses. Within the upper hip, at least two rows of sprinklers may be placed, with a first row of sprinklers located substantially at the apex. The maximum allowable spacing between sprinklers in a direction perpendicular to the slope of the hip may be greater than a maximum allowable spacing between rows of sprinklers, i.e., in a direction parallel to the slope of the hip.

Abstract: A fire protection system is provided for a space having a pitched roof constructed of structural members extending from a ridgeline to an eave, with respective channels therebetween. A first row of sprinklers is mounted to a first branch line extending generally parallel to the ridgeline. Each sprinkler is positioned within a respective channel, with consecutive sprinklers spaced apart having no less than one, and no more than five, channels therebetween. A second row of sprinklers, downslope from the first row, is mounted to a second branch line extending generally parallel to the first branch line. Each sprinkler thereof is positioned within a respective channel, with consecutive second row sprinklers spaced apart as in the first row. Each second row sprinkler is also placed within a different channel from each first row sprinkler. A farthest number of channels between a first row sprinkler and a second row sprinkler is three.

Abstract: A wet piping system modular valve assembly includes a single piece valve body with a check valve within the valve body. The check valve is movable between a closed position and an open position according to a pressure differential across the check valve. A drain valve is removably mounted to the valve body and fluidly connected with the valve body downstream of the check valve. A mechanically independent flow detection switch is removably mounted to the valve body and fluidly connected with the valve body upstream of the drain valve.

Abstract: A concealable sprinkler head includes a frame having a body mountable to a fire suppression liquid source, a pair of frame arms and a pair of corresponding drop pins slidably engaged with a respective frame arm. A thermal trigger is supported within the sprinkler frame. A fluid deflector is secured to the drop pins and includes a generally horizontal surface. The drop pins extend substantially orthogonally from the horizontal surface. An inclined surface of the fluid deflector extends angularly upwardly from the horizontal surface. A concealing cup surrounds the frame arms. A cover plate is attached to the concealing cup, covering the distal end thereof, wherein the drop pins and the deflector are positioned within the concealing cup. The cover plate is removable from the concealing cup permitting the drop pins and the deflector to axially slide out of the concealing cup into an operational position.

Abstract: A concealable sprinkler head includes a frame having a body mountable to a fire suppression liquid source, a pair of frame arms and a pair of corresponding drop pins slidably engaged with a respective frame arm. A thermal trigger is supported within the sprinkler frame. A fluid deflector is secured to the drop pins and includes a generally horizontal surface. The drop pins extend substantially orthogonally from the horizontal surface. An inclined surface of the fluid deflector extends angularly upwardly from the horizontal surface. A concealing cup surrounds the frame arms. A cover plate is attached to the concealing cup, covering the distal end thereof, wherein the drop pins and the deflector are positioned within the concealing cup. The cover plate is removable from the concealing cup permitting the drop pins and the deflector to axially slide out of the concealing cup into an operational position.

Abstract: A wet piping system modular valve assembly includes a single piece valve body with a check valve within the valve body. The check valve is movable between a closed position and an open position according to a pressure differential across the check valve. A drain valve is removably mounted to the valve body and fluidly connected with the valve body downstream of the check valve. A mechanically independent flow detection switch is removably mounted to the valve body and fluidly connected with the valve body upstream of the drain valve.

Abstract: A wet piping system modular valve assembly includes a single piece valve body with a check valve within the valve body. The check valve is movable between a closed position and an open position according to a pressure differential across the check valve. A drain valve is removably mounted to the valve body and fluidly connected with the valve body downstream of the check valve. A mechanically independent flow detection switch is removably mounted to the valve body and fluidly connected with the valve body upstream of the drain valve.

Abstract: A thermal trigger assembly for remote mechanical actuation of another fire protection system component includes an activation component with a distal base, a distal movable member, a proximal base, a proximal movable member, and a bias member biasing the proximal movable member from a preactivation position to an activated position located proximally of the preactivation position. A thermally responsive element is retained by the distal base, loses structural integrity under occurrence of a predetermined thermodynamic condition, and thereby allows the distal movable member to move from a preactivation position to an activated position with respect to the distal base. A flexible connector connects the proximal movable member to the distal movable member. Upon the loss of structural integrity by the thermally responsive element, a biasing force from the bias member causes a movement of the proximal movable member from the preactivation position to the activated position.

Abstract: A concealable sprinkler head includes a frame having a body mountable to a fire suppression liquid source, a pair of frame arms and a pair of corresponding drop pins slidably engaged with a respective frame arm. A thermal trigger is supported within the sprinkler frame. A fluid deflector is secured to the drop pins and includes a generally horizontal surface. The drop pins extend substantially orthogonally from the horizontal surface. An inclined surface of the fluid deflector extends angularly upwardly from the horizontal surface. A concealing cup surrounds the frame arms. A cover plate is attached to the concealing cup, covering the distal end thereof, wherein the drop pins and the deflector are positioned within the concealing cup. The cover plate is removable from the concealing cup permitting the drop pins and the deflector to axially slide out of the concealing cup into an operational position.

Abstract: A test, drain and adjustable pressure relief module for a sprinkler system has a single body with three independent and fluidly connectable flow ports. A first port of the three flow ports is fluidly connectable at an inlet side thereof to the sprinkler system. A second port of the three flow ports has an adjustable pressure relief valve removably mounted to an outlet thereof. The valve is biased into a closed position and a threshold pressure is required to open the valve and discharge fluid is selectively adjustable. A third port of the three flow ports has an open outlet end configured to removably connect with a drainage pipe. The three ports form a Tee connection and have a flow valve therebetween to selectively direct flow between an outlet of the first port and at least one of the respective inlets of the second and third ports.