Described herein is a kitchen ventilation system, comprising: a kitchen hood communicative with a kitchen exhaust duct; a fan communicative with the hood to create an air flow through the hood and to the exhaust duct; a fire barrier air filter mounted to the hood to receive and filter the air flow, the fire barrier air filter comprising a plurality of elongate extruded bodies in parallel alignment; each extruded body bound by first and second opposing concave surfaces and first and second baffle surfaces, the first and second baffle surfaces oriented transverse to the air flow; and at least one of the of the first and second concave surfaces oriented in facing opposition to a neighboring concave surface provided by a neighboring extruded body to form a cooperating pair of facing concave surfaces, the pair of facing concave surfaces defining a narrow longitudinal inlet gap, a narrow longitudinal outlet gap, and a longitudinal tubular chamber communicating therebetween. A kit providing at least a fire barrier air filter of the system and instructions for its installation is also described. A method of fire prevention using components of the system or kit is also described.

Described herein is a kitchen ventilation system, comprising: a kitchen hood communicative with a kitchen exhaust duct; a fan communicative with the hood to create an air flow through the hood and to the exhaust duct; a fire barrier air filter mounted to the hood to receive and filter the air flow, the fire barrier air filter comprising a plurality of elongate extruded bodies in parallel alignment; each extruded body bound by first and second opposing concave surfaces and first and second baffle surfaces, the first and second baffle surfaces oriented transverse to the air flow; and at least one of the of the first and second concave surfaces oriented in facing opposition to a neighboring concave surface provided by a neighboring extruded body to form a cooperating pair of facing concave surfaces, the pair of facing concave surfaces defining a narrow longitudinal inlet gap, a narrow longitudinal outlet gap, and a longitudinal tubular chamber communicating therebetween. A kit providing at least a fire barrier air filter of the system and instructions for its installation is also described. A method of fire prevention using components of the system or kit is also described.

A flame arrestor system includes a heat exchanger through which a cooling gas flow stream is directed. A zone adjacent the heat exchanger is susceptible to possible flame and through which the cooling gas flow stream is directed. A flame arrestor containing a passage-structure matrix is disposed between the zone and the heat exchanger to quench flame from entering the heat exchanger.

A seal-off fitting for a conduit system includes a conduit body defining an inner cavity, at least one conduit port adapted to receive a conduit, and at least one threaded sealing port. The seal-off fitting further includes a threaded seal-off cover engageable with the sealing port, a first coating applied to at least a portion of the conduit body, and a second coating applied to at least of portion of the seal-off cover. At least a portion of the threads of the sealing port and at least a portion of the threads the seal-off cover remain uncoated, with the uncoated threads of the sealing port and the uncoated threads of the seal-off cover defining a flame path for flue gases exiting the conduit body.

A seal-off fitting for a conduit system includes a conduit body defining an inner cavity, at least one conduit port adapted to receive a conduit, and at least one threaded sealing port. The seal-off fitting further includes a threaded seal-off cover engageable with the sealing port, a first coating applied to at least a portion of the conduit body, and a second coating applied to at least of portion of the seal-off cover. At least a portion of the threads of the sealing port and at least a portion of the threads the seal-off cover remain uncoated, with the uncoated threads of the sealing port and the uncoated threads of the seal-off cover defining a flame path for flue gases exiting the conduit body.

A portable storage containing apparatus for use in safely storing a variety of different sensitive and/or flammable products. A portable storage containing apparatus for use in providing a localized fire extinguishing and suppression mechanism in an emergency situation. A portable storage containing apparatus comprising a manual release cabinet having a carbon dioxide fire suppression system for fire suppression of easily ignitable flammable materials. A portable storage containing apparatus comprising a flame arrested for use in preventing passage of flame, while simultaneously allowing for free ventilation.

Disclosed herein are a system, method, and apparatus for arresting flames in an air return line. The apparatus includes a flame barrier containing one or more metal mesh layers and configured to permit airflow there through while preventing flame break-through. The flame barrier can also have or be connected to one or more temperature or pressure sensors configured to detect blockage of airflow through the flame barrier and to detect damage to the flame barrier. The apparatus can also include additional temperature or pressure sensors for detecting the propagation of deflagration in the air return line.

Disclosed herein are a system, method, and apparatus for arresting flames in an air return line. The apparatus includes a flame barrier containing one or more metal mesh layers and configured to permit airflow there through while preventing flame break-through. The flame barrier can also have or be connected to one or more temperature or pressure sensors configured to detect blockage of airflow through the flame barrier and to detect damage to the flame barrier. The apparatus can also include additional temperature or pressure sensors for detecting the propagation of deflagration in the air return line.

Disclosed herein are a system, method, and apparatus for arresting flames in an air return line. The apparatus includes a flame barrier containing one or more metal mesh layers and configured to permit airflow there through while preventing flame break-through. The flame barrier can also have or be connected to one or more temperature or pressure sensors configured to detect blockage of airflow through the flame barrier and to detect damage to the flame barrier. The apparatus can also include additional temperature or pressure sensors for detecting the propagation of deflagration in the air return line.

Disclosed herein are a system, method, and apparatus for arresting flames in an air return line. The apparatus includes a flame barrier containing one or more metal mesh layers and configured to permit airflow there through while preventing flame break-through. The flame barrier can also have or be connected to one or more temperature or pressure sensors configured to detect blockage of airflow through the flame barrier and to detect damage to the flame barrier. The apparatus can also include additional temperature or pressure sensors for detecting the propagation of deflagration in the air return line.