Fire suppression systems for aircraft are described. The fire suppression systems include a first fire suppression material source containing a first constituent, a second fire suppression material source containing a second constituent different from the first constituent, and a fluid supply line connecting the first fire suppression material source and the second fire suppression material source to at least one dispenser configured to dispense the first constituent in the form of a first agent in a high rate discharge operation to extinguish a detected fire, and to dispense the second constituent in the form of a second agent in a low rate discharge operation after the high rate discharge operation.

The conceived invention simplifies current art methods of incorporating fire notification appliances with fire sprinkler systems by replacing vane and pressure type of waterflow switches with a single water driven generator having dual functionality. It includes power generation and activation when water moves through a sprinkler system. A notification appliance may use audible, visible, or other stimuli to alert the occupants of a fire. The system also includes a waterflow switch output to trigger an external fire/security alarm system when required and a digital controller with a delay timer to prevent false alarms due to water pressure fluctuations. Another embodiment includes both alarm monitoring and circuit supervision to enhance operation and system maintenance.

The conceived invention simplifies current art methods of incorporating fire notification appliances with fire sprinkler systems by replacing vane and pressure type of waterflow switches with a single water driven generator having dual functionality. It includes power generation and activation when water moves through a sprinkler system. A notification appliance may use audible, visible, or other stimuli to alert the occupants of a fire. The system also includes a waterflow switch output to trigger an external fire/security alarm system when required and a digital controller with a delay timer to prevent false alarms due to water pressure fluctuations. Another embodiment includes both alarm monitoring and circuit supervision to enhance operation and system maintenance.

Systems and methods of an integrated fluid control valve and valve actuator assembly are provided. The assembly includes a pressure operated fluid control valve for controlling the flow of liquid from a liquid supply piping system into a sprinkler piping system of a fire protection system when transitioning the fire protection system from a stand-by state to an actuated state. The control valve defines a valve chamber for holding a pressurized fluid to prevent the flow of fluid through the control valve. A valve actuator is coupled to the fluid control valve housing for setting of the fluid control valve in an unactuated ready state and for operating the fluid control valve automatically and/or manually. The assembly has a common supply port to supply fluid to the control valve and the actuator and a common discharge port connected to multiple devices that can place the system in an actuated state.

A fire suppression system in which the water supply line is fitted with repeating arrays or groups of sprinkler heads. Each array is composed of at least two side-discharge sprinklers. The side-discharge sprinklers in each array are aimed so that their coverage areas point in opposite directions. Each side-discharge sprinkler includes a lateral heat shield. The lateral heat shield has a concave heat-concentering side that focuses radiant heat toward the sprinkler's trigger, and a convex heat-scattering side that disperses radiant heat away from the trigger. In some embodiments, the array can include one or more vertical-discharge sprinklers. The vertical-discharge sprinkler may include a heat collector to facilitate early activation of its trigger. The fire suppression system is advantageous in high-challenge applications like facilities where large quantities of combustible items are stored in close proximity, such as in warehouses and attics.

A fire suppression system in which the water supply line is fitted with repeating arrays or groups of sprinkler heads. Each array is composed of at least two side-discharge sprinklers. The side-discharge sprinklers in each array are aimed so that their coverage areas point in opposite directions. Each side-discharge sprinkler includes a lateral heat shield. The lateral heat shield has a concave heat-concentering side that focuses radiant heat toward the sprinkler's trigger, and a convex heat-scattering side that disperses radiant heat away from the trigger. In some embodiments, the array can include one or more vertical-discharge sprinklers. The vertical-discharge sprinkler may include a heat collector to facilitate early activation of its trigger. The fire suppression system is advantageous in high-challenge applications like facilities where large quantities of combustible items are stored in close proximity, such as in warehouses and attics.

A method for the visual inspection of the existence of pressure within a branch line of pipes includes locating the run of pipes, coupling a mechanical tee to a first pipe so as to form a branch in the run of pipes wherein the mechanical tee has a pressure indicator, pressurizing the run of pipes, and checking the pressure indicator for an indication of pressure within the run of pipes. The mechanical tee includes a collar portion configured to extend around a pipe. A neck portion is coupled to the collar portion. The channel of the neck portion is in fluid communication with the interior of the pipe. A pressure indicating device is in fluid communication with the channel to provide a visual indication of the pressure level. The pressure indicating device may include electrical contacts to communicate with a monitoring system.

A tool for draining a fire sprinkler system through a fire sprinkler, comprising: a housing configured for cooperation with the sprinkler to collect fluid flowing from the sprinkler; an actuator to activate the sprinkler; and a conduit in fluid communication with the housing 5 and through which the fluid can be drained.

The invention relates to a fire extinguishing system valve (1), in particular a wet alarm valve, dry alarm valve or spray water valve, comprising a housing (2, 3) which has a fluid inlet chamber (8), a fluid outlet chamber (9) and a closing body (4a) which is movable to and fro between a blocking state and a release state, wherein, in the release state, the fluid inlet chamber (8) and the fluid outlet chamber (9) communicate with each other directly in a fluid-conducting manner, and, in the blocking state, the closing body (4a) prevents the direct communication between the fluid inlet chamber (8) and the fluid outlet chamber (9) characterized by a bypass line (10) which is integrated in the housing and is connected to the fluid inlet chamber (8) and the fluid outlet chamber (9) in a fluid-conducting manner.

The invention relates to a fire extinguishing system valve (1), in particular a wet alarm valve, dry alarm valve or spray water valve, comprising a housing (2, 3) which has a fluid inlet chamber (8), a fluid outlet chamber (9) and a closing body (4a) which is movable to and fro between a blocking state and a release state, wherein, in the release state, the fluid inlet chamber (8) and the fluid outlet chamber (9) communicate with each other directly in a fluid-conducting manner, and, in the blocking state, the closing body (4a) prevents the direct communication between the fluid inlet chamber (8) and the fluid outlet chamber (9) characterized by a bypass line (10) which is integrated in the housing and is connected to the fluid inlet chamber (8) and the fluid outlet chamber (9) in a fluid-conducting manner.