An adapter and adapter system for coupling a female end of a first chimney portion to a male end of a second chimney portion. The adapter includes a first radial adapter portion, wherein a first inner surface and a first outer surface of the first radial adapter portion are coaxial. The adapter further includes a first locking interface protruding outward from the first outer surface and configured to engage with a first locking interface of the first chimney portion. The adapter further includes a second radial adapter portion with a second inner surface and a second outer surface extending along the first axis and a second locking interface protruding inward from the second inner surface and configured to engage with a second interlocking interface of the second chimney.

An adapter and adapter system for connecting a female end of a first chimney portion to a male end of a second chimney portion. The adapter includes a first radial adapter portion with a first inner surface and a first outer surface extending along a first axis and wherein the first inner surface and the first outer surface are substantially coaxial. The adapter further includes a first locking interface protruding outward from the first outer surface and configured to engage with a first locking interface of the first chimney portion and a second locking interface protruding inward from the first inner surface and configured to engage with a second interlocking interface of the second chimney. The first outer surface of the adapter is configured to be received within the female end of the first chimney portion and the inner surface is configured to receive the male end of the second chimney.

A joint seal system and method may include a seal and a band. The seal may be positioned between abutting flanges of two adjacent duct sections. A band may be positioned over the two flanges and the flange interface. The joint seal system and method may be configured to mitigate and/or eliminate leakage of pressure, flue gases, condensate, and/or any other fluid, gas, and/or vapor between abutting flanges of duct sections at a flange interface.

A conduit locking system includes a first cylindrical conduit having a male and female portion. The female portion includes an engagement protrusion that is radially disposed on an outer surface, and an inner surface that is configured to engage an outer surface of a male portion of a second cylindrical conduit to define a continuous fluid passageway. The conduit locking system comprises an annular band having a tensioner and is configured to engage the male portion of the second cylindrical conduit. The annular band may also comprise a plurality of fingers disposed radially about the annular band. The plurality of fingers may be configured to engage the engagement protrusion of the female portion of the first cylindrical conduit. The conduit locking system is manipulatable between an unclamped position to a clamped position.

A joint seal system and method may include a seal and a band. The seal may be positioned between abutting flanges of two adjacent duct sections. A band may be positioned over the two flanges and the flange interface. The joint seal system and method may be configured to mitigate and/or eliminate leakage of pressure, flue gases, condensate, and/or any other fluid, gas, and/or vapor between abutting flanges of duct sections at a flange interface.

An apparatus and a method for achieving progressive reduction of flue gas is disclosed. Accordingly, an aspect of the present invention is to provide an apparatus comprising of an orifice chamber having an inlet pipe for receiving the flue gas, a flow region defined downstream of an exit of the inlet pipe and having at least a first section and a second section, and an outlet pipe to disperse a pressure reduced flue gas. The first section defined downstream of the inlet pipe has a flow developer means and at least one auxiliary orifice plate. The second section defined downstream of the first section has a plurality of orifice plates spaced apart along a flow length of the second section.

In an air supply and exhaust adapter for a combustion device of a forced air supply and exhaust type, with the combustion device comprising an air supply section and an exhaust section being provided to project from a top plate portion of an outer casing; comprising a base portion that comprises a box shaped configuration and an open bottom portion, an air supply intake portion that is formed on the top surface portion of the base portion so as to cover the air supply section and to take in air from the surroundings of the combustion device, a circumferential wall portion that surrounds the periphery of the exhaust section; and a communication passage defined between the top surface portion and the top plate portion so as to communicate the space between the exhaust section and the circumferential wall portion with the air supply intake portion; the communication passage being constructed so that, due to the operation of the air blower means, the gauge pressure therein becomes negative.

The modular tubular exhaust system includes a first tubular body, a second tubular body and at least one third tubular body connecting to form, a fully assembled configuration, a vertically arranged exhaust pipe. The first, the second, and the third tubular bodies each have a tubular body first end and a tubular body second end where the first ends and second ends are configured to mate with each other to form the vertically arranged exhaust pipe. The system further includes tabs that extend radially outward on opposing sides of the tubular bodies to allow a plurality of fasteners to attach tubular bodies together when arranged in the vertical configuration. The assembled configuration may vary within the spirit and scope of the disclosure, for example, in some embodiments, the system may only have a first and a second tubular section or a first, second, and a plurality of third tubular sections.

An exhaust adapter secures an exhaust tube relative to an exhaust pipe. The exhaust adapter is formed to have an annular shape enclosing a through hole, and is mounted on the outer peripheral surface of the exhaust tube and on the inner peripheral surface of the exhaust pipe by inserting the exhaust tube into the through hole. When the exhaust adapter is being fitted on the outer peripheral surface of the exhaust tube, the inner peripheral surface of the exhaust adapter presses the outer peripheral surface of the exhaust tube, and when the exhaust adapter is being fitted on the inner peripheral surface of the exhaust pipe, the outer peripheral surface of the exhaust adapter presses the inner peripheral surface of the exhaust pipe.

A joint seal system and method may include a seal and a band. The seal may be positioned between abutting flanges of two adjacent duct sections. A band may be positioned over the two flanges and the flange interface. The joint seal system and method may be configured to mitigate and/or eliminate leakage of pressure, flue gases, condensate, and/or any other fluid, gas, and/or vapor between abutting flanges of duct sections at a flange interface.