The Reliable Automatic Sprinkler Co. Inc.

A fire protection sprinkler system includes a horizontal barrier that covers two adjacent racks, and the vertical flue space between the racks. The horizontal barrier is provided at a predetermined height, and has a width that is at least equal to a width of the rack, and a depth that is at least equal to a sum of a depth of the rack, a depth of the other rack, and a depth of the vertical flue space. In addition, the horizontal barrier is a sheet having one or more apertures. The system also includes a rack level fire protection sprinkler connected to a fluid supply conduit, and being disposed in the vertical flue space below the horizontal barrier. The rack level sprinkler has a K-factor of 11.2 gpm/(psi) 1/2 or greater, and is vertically spaced from commodities stored on the rack and the other rack covered by the horizontal barrier.

A fire protection nozzle includes (A) a body having a flow passage for a fluid that flows through the body in an output direction, frame arms having proximal ends connected to an outlet orifice and distal ends, the frame arms defining a frame arm plane, and a junction formed by the distal ends of the frame arms at a distance from the outlet orifice, the junction including a central bore and an outer wall, and (B) a planar member deflector configured to be mounted to the body. The deflector includes a planar member having a plurality of slots on a periphery of the planar member that define a plurality of tines. The plurality of slots include at least first slots, second slots, third slots, and fourth slots.

A dry sprinkler has a casing tube having an inlet orifice and an outlet orifice. When the sprinkler is in a non-actuated state, an inlet seal assembly operatively seals the inlet orifice and an outlet seat assembly operatively seals the outlet orifice. A translating member extends through the casing tube between an inlet and an outlet. The translating member axially translates from a first position, in which the translating member retains the inlet seal assembly in a sealed state, to a second position, in which the translating member releases the inlet seal assembly, toward the outlet when the outlet seat assembly is released. The sprinkler has a nominal K-factor greater than 17 gpm/(psi) 1/2 . A difference between a cross-sectional area of the casing tube and a cross-sectional area bounded by an outer perimeter of the translating member is more than 30% of the cross-sectional area of the casing tube.

A fire protection sprinkler system and related method for a storage area for one or more commodities or high energy commodities, the storage area having one or more racks that each includes one or more bays. The fire protection sprinkler system includes a piping network supplied by a source of fire protection fluid. The fire protection system includes a plurality of horizontal sidewall sprinklers. Each of the plurality of horizontal sidewall sprinklers has a K-factor of 11.2 gpm/(psi) 1/2 or greater and is positioned horizontally at a perimeter of the racks to direct the fire protection fluid into the bays. Each of the plurality of horizontal sidewall sprinklers includes a deflector that distributes the fire protection fluid to a coverage area. The fire protection sprinkler system can also include vertical sidewall sprinklers positioned vertically and include a deflector that directs the fire protection fluid horizontally into the bays.

A cover plate is configured to be releasably connected to a fire protection sprinkler to conceal the fire protection sprinkler. The cover plate includes a first layer of metal on a first side of the cover plate that faces the concealed fire protection sprinkler, and a second layer of metal on a second side of the cover plate, the second side being opposite to the first side. The second layer of metal is bonded to the first layer and is more resistant to corrosion than is the first layer. In addition, the first layer is more thermally conductive than is the second layer. The fire protection sprinkler is configured to activate upon activation of a thermally responsive element. The thermally responsive element is a bulb or a soldered link.

A fire protection nozzle includes a body having two frame arms having proximal ends connected to an outlet of the body, and distal ends, the two frame arms defining a frame arm plane, and a junction formed by the distal ends of the frame arms, the junction including a central bore and an outer wall. A deflector is mounted to the body, and includes a planar member having a mounting hole in a center of the planar member to receive the outer wall of the junction, and a plurality of slots on a periphery of the planar member. The plurality of slots includes first slots, second slots, third slots, and fourth slots.

A fire protection nozzle includes a body having two frame arms having proximal ends connected to an outlet of the body, and distal ends, the two frame arms defining a frame arm plane, and a junction formed by the distal ends of the frame arms, the junction including a central bore and an outer wall. A deflector is mounted to the body, and includes a planar member having a mounting hole in a center of the planar member to receive the outer wall of the junction, and a plurality of slots on a periphery of the planar member. The plurality of slots includes first slots, second slots, third slots, and fourth slots.

A dry sprinkler has a casing tube having an inlet orifice and an outlet orifice. When the sprinkler is in a non-actuated state, an inlet seal assembly operatively seals the inlet orifice and an outlet seat assembly operatively seals the outlet orifice. A translating member extends through the casing tube between an inlet and an outlet. The translating member axially translates from a first position, in which the translating member retains the inlet seal assembly in a sealed state, to a second position, in which the translating member releases the inlet seal assembly, toward the outlet when the outlet seat assembly is released. The sprinkler has a nominal K-factor greater than 17 gpm/(psi) 1/2 . A difference between a cross-sectional area of the casing tube and a cross-sectional area bounded by an outer perimeter of the translating member is more than 30% of the cross-sectional area of the casing tube.

A dry fire protection sprinkler in which, when a ratio of a pressure P 1 of a pressurized fluid in a flexible tube to a pressure P 3 of the fluid in a fluid supply line is less than a predetermined ratio of at least 3 to 1, a differential pressure controller sends a signal to a control valve to open, in order to allow the pressurized fluid in a pressurized fluid source at a pressure of P 2 to enter the flexible tube, and, when the ratio of the pressure P 1 of the pressurized fluid in the flexible tube to the pressure P 3 of the fluid in the fluid supply line equals the predetermined ratio, the differential pressure controller sends a signal to the control valve to close.

A ceiling-only fire protection sprinkler system for a storage area having a storage height up to forty-three feet (thirteen and one tenth meters) and a ceiling height exceeding forty-five feet (thirteen and seven tenths meters). The storage area includes floor storage or rack storage that has aisle widths less than six feet (one and eight tenths meters) and transverse flue spaces less than six inches (one hundred fifty millimeters). The system includes fire suppression sprinklers that each includes a deflector positioned at a height that is at least three feet (nine tenths meters) greater than the storage height and at least one foot (three tenths meters) below the ceiling. Activated sprinklers have a coverage area greater than sixty-four square feet (five and nine tenths square meters) and up to one hundred square feet (nine and three tenths square meters) per each activated sprinkler.