An electronic device may obtain a water pressure measurement associated with a charged fire sprinkler system. The electronic device may determine obtained water pressure measurement is indicative of a slow leak or indicative of the fast leak. The electronic device may, in response to determining that the water pressure is indicative of a slow leak, initiate a system recharge in which a fire pump of the fire sprinkler system is activated to attempt to recharge the water pressure.

Ceiling only dry sprinkler systems and methods for protection of a storage occupancy employing a mandatory fluid delivery delay period. The systems and methods provide for fire protection of stored commodities of forty-five feet or greater with a hydraulic design ranging from six to eighteen design sprinklers. The systems and methods employ an upright sprinkler having a nominal K-factor greater than 28.

Ceiling only dry sprinkler systems and methods for protection of a storage occupancy employing a mandatory fluid delivery delay period. The systems and methods provide for fire protection of stored commodities of forty-five feet or greater with a hydraulic design ranging from six to eighteen design sprinklers. The systems and methods employ an upright sprinkler having a nominal K-factor greater than 28.

The invention relates to a control system (10) of a fire-extinguishing installation, having at least one control line (11) for controlling a controlling procedure of the fire-extinguishing installation, wherein the control line (11) in a passive operation is unpressurized and the control line (11) in a control operation is impinged with a control pressure, and a safety device (12), fluidically connected to the control line (11), having a pressure equalization chamber (13) in which a holding element (3) and a movable closure element (2) are disposed. It is proposed that the closure element (2) is disposed in the pressure equalization chamber (13) so as to be displaceable between a first terminal position and a second terminal position, and the holding element (3) is configured for exerting on the closure element (2) a restoring force in the direction of the first terminal position, wherein the restoring force on the closure element (2) in the second terminal position of the closure element (2) is higher than the weight force of the closure element (2), and in the first terminal position of the closure element (2) is lower than a pressure force that in the control operation acts as a function of the control pressure on the closure element (2).

The invention relates to a control system (10) of a fire-extinguishing installation, having at least one control line (11) for controlling a controlling procedure of the fire-extinguishing installation, wherein the control line (11) in a passive operation is unpressurized and the control line (11) in a control operation is impinged with a control pressure, and a safety device (12), fluidically connected to the control line (11), having a pressure equalization chamber (13) in which a holding element (3) and a movable closure element (2) are disposed. It is proposed that the closure element (2) is disposed in the pressure equalization chamber (13) so as to be displaceable between a first terminal position and a second terminal position, and the holding element (3) is configured for exerting on the closure element (2) a restoring force in the direction of the first terminal position, wherein the restoring force on the closure element (2) in the second terminal position of the closure element (2) is higher than the weight force of the closure element (2), and in the first terminal position of the closure element (2) is lower than a pressure force that in the control operation acts as a function of the control pressure on the closure element (2).

A connector includes a first member defining a first opening; a second member defining a second opening; and a third member defining a third opening, the first opening, the second opening, and the third opening being centrally connected to define a cavity within the connector. A method for draining a sprinkler assembly includes removing a plug from a third opening of a connector of the sprinkler assembly, a sprinkler body of the sprinkler assembly connected to a first opening of the connector, a flexible conduit of the sprinkler assembly connected to a second opening of the connector; and draining a fluid from the connector and the flexible conduit through the third opening.

Disclosed is a method of monitoring pressure in a fire suppression system of an aircraft, the method providing: receiving a first pressure-vessel measured pressure from a first pressure-vessel pressure transducer connected to a first pressure-vessel; receiving a second pressure-vessel measured temperature from a second pressure-vessel temperature sensor connected to a second pressure-vessel; calculating a first pressure-vessel estimated pressure from the second pressure-vessel measured temperature; comparing the first pressure-vessel measured pressure With the first pressure-vessel estimated pressure; and providing a depressurization alert when a difference between the first pressure-vessel measured pressure and the first pressure-vessel estimated pressure is greater than a threshold thereby avoiding unscheduled aircraft downtime due to an erroneous or missing temperature measurement in the first pressure-vessel.

Disclosed is a method of monitoring pressure in a fire suppression system of an aircraft, the method providing: receiving a first pressure-vessel measured pressure from a first pressure-vessel pressure transducer connected to a first pressure-vessel; receiving a second pressure-vessel measured temperature from a second pressure-vessel temperature sensor connected to a second pressure-vessel; calculating a first pressure-vessel estimated pressure from the second pressure-vessel measured temperature; comparing the first pressure-vessel measured pressure With the first pressure-vessel estimated pressure; and providing a depressurization alert when a difference between the first pressure-vessel measured pressure and the first pressure-vessel estimated pressure is greater than a threshold thereby avoiding unscheduled aircraft downtime due to an erroneous or missing temperature measurement in the first pressure-vessel.

A gas supply system primarily designed for use with fire sprinkler systems which includes a control system which uses flow demand to automatically determine the mode of operation and switch between providing air and nitrogen. The gas supply system can operate either in standard nitrogen generation mode where nitrogen is supplied to the reservoir tank and/or sprinkler system or in a bypass mode, where sufficient pressure is only obtained by directly supplying air. The gas supply system can provide for improved safety in operation as well as the ability to operate the sprinkler system primarily when filled with nitrogen supervisory gas.

A gas supply system primarily designed for use with fire sprinkler systems which includes a control system which uses flow demand to automatically determine the mode of operation and switch between providing air and nitrogen. The gas supply system can operate either in standard nitrogen generation mode where nitrogen is supplied to the reservoir tank and/or sprinkler system or in a bypass mode, where sufficient pressure is only obtained by directly supplying air. The gas supply system can provide for improved safety in operation as well as the ability to operate the sprinkler system primarily when filled with nitrogen supervisory gas.