Abstract: System for assisting in reducing the spread of fire between adjacent rooms in a building proximate to the ceiling thereof includes an elongated header track, at least one elongated filler constructed at least partially of compressible or elastic material and at least one fire-blocker constructed at least partially of fire retarding material.

Abstract: System for assisting in reducing the spread of fire between adjacent rooms in a building proximate to the ceiling thereof includes an elongated header track, at least one elongated filler constructed at least partially of compressible or elastic material and at least one fire-blocker constructed at least partially of fire retarding material.

Abstract: System for assisting in reducing the spread of fire between adjacent rooms in a building proximate to the ceiling thereof includes an elongated header track, at least one elongated filler constructed at least partially of compressible or elastic material and at least one fire-blocker constructed at least partially of fire retarding material.

Abstract: System for assisting in reducing the spread of fire between adjacent rooms in a building proximate to the ceiling thereof includes an elongated header track, at least one elongated filler constructed at least partially of compressible or elastic material and at least one fire-blocker constructed at least partially of fire retarding material.

Abstract: System for assisting in reducing the spread of fire between adjacent rooms in a building proximate to the ceiling thereof includes an elongated header track, at least one elongated filler constructed at least partially of compressible or elastic material and at least one fire-blocker constructed at least partially of fire retarding material.

Abstract: A heat exchanger may be cleaned by introducing compressed nitrogen and a flushing composition through an injection device.

Abstract: A heat exchanger may be cleaned by introducing compressed nitrogen and a flushing composition through an injection device.

Abstract: A composition useful in cleaning of a tankless water heater system. The composition contains mixture of organic and inorganic acids. The composition may further contain phosphates and corrosion inhibitors.

Abstract: The present invention provides method, apparatus, and system to assist in partially or fully reestablishing the fire rating of a barrier that has been compromised by the installation of an electrical box(es) in the barrier. The electrical box includes a faceplate having a fire retardant material, such as an intumescent material, coupled to the faceplate and/or coupled between the box and the faceplate. The fire retardant material enhances the fire resistance of the compromised area of the barrier. In one embodiment, the fire retardant material can be in the form of a gasket that can be used cooperatively with the faceplate and the electrical box. In another embodiment, the fire retardant material can be established on one or more surfaces of the faceplate by molding, spraying, dipping, coating or any other methods of application of the material to a surface.

Abstract: A composition which, when subjected to heat, expands to form heat-insulating barriers comprises an expandable graphite, a fire retardant, and an inorganic intumescent filler such as clay dispersed in a resinous emulsion. Particularly desirable results are obtained with a fire retardant which is a C2-C8 alkyl diamine phosphate.