Various embodiments relate to fire suppression systems. A fire suppression system may include at least one fire suppression module. The fire suppression module may include a fire suppression system component, an at-pressure connector assembly coupled to the fire suppression system component. The fire suppression system may further include a first conduit having a first end coupled to the fire suppression system component via the at-pressure connector assembly. Further, the fire suppression system may include a second at-pressure connector coupled to a second end of the first conduit.

Various embodiments relate to fire suppression systems. A fire suppression system may include at least one fire suppression module. The fire suppression module may include a fire suppression system component, an at-pressure connector assembly coupled to the fire suppression system component. The fire suppression system may further include a first conduit having a first end coupled to the fire suppression system component via the at-pressure connector assembly. Further, the fire suppression system may include a second at-pressure connector coupled to a second end of the first conduit.

A device and method for verifying the readiness of a building's fire sprinkler system. The device includes an adapter that is secured between the sprinkler pipe and the sprinkler assembly, a pressure switch to measure the fluid pressure in the fire sprinkler system, an indicator which notifies occupants if there is enough fluid pressure at the sprinkler assembly for the sprinkler to operate properly, and a power source for the pressure switch and indicator. During operation of the sprinkler system, water flows from the sprinkler pipe, through the adapter and into the sprinkler assembly.

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 pressure maintenance device is connected to a fire protection sprinkler system having downstream piping that is exposed to freezing temperatures, and supplies a pressurized fluid to the downstream piping when the sprinkler system is in an inactivated state. When an outlet pressure sensor near an outlet of the pressure maintenance device detects that a pressure of the pressurized fluid downstream of an outlet regulator falls below a first predetermined pressure, the pressure maintenance device supplies the pressurized fluid in a primary supply mode or a secondary supply mode. The pressure maintenance device automatically switches from the primary supply mode to the secondary supply mode if a supply pressure sensor detects that a pressure of the pressurized fluid downstream of a first pressurized fluid valve, and upstream of the outlet pressure regulator, falls below a second predetermined pressure.

A monitoring and testing system which is designed to automatically seal off the system from its gas supply and monitor internal pressure during that time to perform regulatory testing. The scheduling can be automated and can be done without maintenance personnel having to monitor the time passage and pressure manually. The system may also be designed to monitor operation of the air compressor, or related gas supply device, and evaluate if the operation of the gas supply is operating in a fashion indicative of a larger than desired leak. This effectively allows the system to monitor pressure changes during regular operation and on a somewhat continuous basis.

A fire sprinkler head has a valve with an X-brace latch, and includes a flexible conduit. A sprinkler nozzle is secured to a first end of the flexible conduit. The sprinkler nozzle includes a first fitting, a sprinkler orifice and fusible element. A second fitting is secured to the second end of the flexible conduit and includes the valve. The valve has a valve element which is moveable from a latched position to an unlatched position. A flexible link extends from the sprinkler nozzle to the X-brace valve latch. Breaking of the fusible element releases the flexible link to move from the latched position to the unlatched position, releasing the valve for flow there-through.

A valve assembly includes a pipe fitting through which a gas is configured to flow. The inlet of the pipe fitting is configured to connect to an open port of a fire suppression sprinkler system so that gas flows from the fire suppression sprinkler system into the pipe fitting. The valve assembly also includes a vent valve. The inlet of the vent valve is connected to the outlet of the pipe fitting. The vent valve is operable to move between an open position and a shut position. The valve assembly includes an inert gas analyzer and at least one vent port upstream of the inert gas analyzer. The inert gas analyzer is positioned to measure the inert gas content of gas flowing in front of the inert gas analyzer and through the vent port to an outside environment.

A wet pipe fire protection sprinkler system and method of operating a wet pipe fire sprinkler system includes providing a sprinkler system having a pipe network, a source of water for the pipe network, at least one sprinkler head connected with the pipe network and a drain valve for draining the pipe network. An inert gas source, such as a nitrogen gas source, is connected with the pipe network. Inert gas is supplied from the inert gas source to the pipe network. Water is supplied to the pipe network thereby substantially filling the pipe network with water and compressing the inert gas in the pipe network.