A safety cabinet includes an enclosure and at least one door to selectively seal the enclosure. The safety cabinet can be used to store, for example, flammable liquids, flammable waste, corrosives, pesticides, or combustible waste. The safety cabinet incorporates a thermally-actuated damper that includes a body, a valve plate, and a pivot assembly. The valve plate is disposed within the passage of the body such that the valve plate is movable between an open position and a closed position. The pivot assembly includes a biasing system adapted to bias the valve plate to the closed position and a fusible link interconnected between the body and the biasing system to constrain the valve plate from moving from the open position to the closed position. The fusible link is configured to melt at a predetermined temperature to thereby allow the biasing system to move the valve plate to the closed position.

An automatic smoke/carbon monoxide evacuation system for a building having at least one existing ventilation fan and at least one ventilation passageway to outside the building is provided. The system includes a microprocessor and a smoke/carbon monoxide sensor coupled to the microprocessor and configured to detect presence of smoke/carbon monoxide and send a trigger signal to the microprocessor in response to detecting smoke/carbon monoxide. A power switch is coupled to the existing ventilation fan and is configured to automatically connect the existing ventilation fan to a power source in response to the trigger signal, so that the ventilation fan rotates at a high speed to ventilate the detected smoke/carbon monoxide via the existing ventilation passageway. An alarm device is further communicably coupled to the microprocessor and is configured to issue an alarm in response to the trigger signal.

An automatic smoke/carbon monoxide evacuation system for a building having at least one existing ventilation fan and at least one ventilation passageway to outside the building is provided. The system includes a microprocessor and a smoke/carbon monoxide sensor coupled to the microprocessor and configured to detect presence of smoke/carbon monoxide and send a trigger signal to the microprocessor in response to detecting smoke/carbon monoxide. A power switch is coupled to the existing ventilation fan and is configured to automatically connect the existing ventilation fan to a power source in response to the trigger signal, so that the ventilation fan rotates at a high speed to ventilate the detected smoke/carbon monoxide via the existing ventilation passageway. An alarm device is further communicably coupled to the microprocessor and is configured to issue an alarm in response to the trigger signal.

An automatic smoke/carbon monoxide evacuation system for a garage equipped with a garage door and garage door opener with a motor is provided. The system includes a microprocessor, and a smoke/carbon monoxide sensor incorporated in a garage door reverse sensor of the garage door opener and coupled to the microprocessor, and configured to detect presence of smoke/carbon monoxide and send a trigger signal to the microprocessor in response to detecting smoke/carbon monoxide. The system further includes a power switch coupled to the motor and configured to automatically connect the motor to a power source in response to the trigger signal to automatically open the garage door to ventilate the detected smoke/carbon monoxide in response to the trigger signal. An alarm device is communicably coupled to the microprocessor and is configured to issue an alarm in response to the trigger signal.

An explosion-proof valve (1), particularly a flap valve (1), for interrupting a flow of fluid (F), particularly in a pipeline, and comprising a valve housing (3) that has a passage opening (4) for the passage of the flow of fluid (F), and a valve seat (5) arranged at the passage opening (4), as well as a closing element (6), particularly a flap plate (6), which comprises a sealing surface (9) and lies with the sealing surface (9) against a valve seat (5) when in a closing position. The closing element (6) is moveably mounted on a bearing (17, 17) in the valve housing (3). The bearing (17, 17) of the closing element (6) is designed such that the closing element (6) can be moved, in a closing direction, out of the operating position and into the closing position by rotational and linear movement.

An explosion-proof valve (1), particularly a flap valve (1), for interrupting a flow of fluid (F), particularly in a pipeline, and comprising a valve housing (3) that has a passage opening (4) for the passage of the flow of fluid (F), and a valve seat (5) arranged at the passage opening (4), as well as a closing element (6), particularly a flap plate (6), which comprises a sealing surface (9) and lies with the sealing surface (9) against a valve seat (5) when in a closing position. The closing element (6) is moveably mounted on a bearing (17, 17) in the valve housing (3). The bearing (17, 17) of the closing element (6) is designed such that the closing element (6) can be moved, in a closing direction, out of the operating position and into the closing position by rotational and linear movement.

A back pressure flap valve arrangement is disclosed. The arrangement comprises a housing (101) having an inlet opening (102) and an outlet opening (103) adapted for connection of the housing (101) to a ducting (200), and at least one side wall (104) extending along a flow direction through the housing (101) from the inlet opening (102) to the outlet opening (103). A flap (1) is pivotably hinged about a shaft (5) thereby being movable between an open position and a closed position, said shaft (5) extending transverse the flow direction. At least one locking device (10) is fixedly mounted to the side wall (104) and comprises a locking pin (14) and a stopping member (12). The locking pin (14) is movable between a retracted position and a locking position, and being biased towards said locking position. The stopping member (12) is movable from a stop position in which the stopping member (12) is adapted to hold the locking pin (14) in its retracted position, to a release position by the flap (1) acting on the stopping member (12) in case of a back pressure. Thereby the locking pin (14) is allowed to move into the locking position in which the locking pin (14) maintains the flap (1) in the closed position.

A back pressure flap valve arrangement is disclosed. The arrangement comprises a housing (101) having an inlet opening (102) and an outlet opening (103) adapted for connection of the housing (101) to a ducting (200), and at least one side wall (104) extending along a flow direction through the housing (101) from the inlet opening (102) to the outlet opening (103). A flap (1) is pivotably hinged about a shaft (5) thereby being movable between an open position and a closed position, said shaft (5) extending transverse the flow direction. At least one locking device (10) is fixedly mounted to the side wall (104) and comprises a locking pin (14) and a stopping member (12). The locking pin (14) is movable between a retracted position and a locking position, and being biased towards said locking position. The stopping member (12) is movable from a stop position in which the stopping member (12) is adapted to hold the locking pin (14) in its retracted position, to a release position by the flap (1) acting on the stopping member (12) in case of a back pressure. Thereby the locking pin (14) is allowed to move into the locking position in which the locking pin (14) maintains the flap (1) in the closed position.

A firewall access door includes a rectangular door frame with a rectangular door coupled there to by at least one door hinge. The door consists of a first rectangular pan member and a decorative gypsum wall panel mated together. The door further includes a second rectangular pan member having a flat surface with opposite side walls extending perpendicular from a flat surface of the second rectangular pan member. The side walls of the second rectangular pan member have flanges for mounting to a back surface of the first pan member opposite the gypsum panel and adjacent the side walls of the first rectangular pan member. The second pan member spans the back of the first rectangular pan member and forms an air gap between the flat surface and the back of the rectangular pan member.

A gas pipe terminal assembly for minimization of fire hazards associated with conductance of a flammable substance. The system includes a pipe having a flange at each end. Each flange includes at least one check valve and a flame screen mounted in the interior of the flange to control a gas flow through the flange. The flange includes wire guide holes and set screw holes within the outside diameter of the pipe, and at least one wire segment in tension inside the pipe and connected to at least one fusible link. At least one fusible link is configured to fuse upon exposure to a temperature above 100 C. and thereby release the tension and activate at least one fire suppression device.