An apparatus for removing moisture from exhaust gas is disclosed. The apparatus includes an inner chamber including an inner exhaust port, configured to discharge the exhaust gas flowing along a chimney, and an outer chamber, surrounding the inner chamber and including an outer exhaust port configured to discharge the exhaust gas discharged from the inner exhaust port, wherein an exhaust path is defined between the inner chamber and the outer chamber such that the exhaust gas discharged from the inner exhaust port flows along the exhaust path and is discharged through the outer exhaust port.

An adjustable neck for a vent cap includes a housing having a mount and a cylindrical body, where the cylindrical body includes an inner surface. The adjustable neck also includes adjustable straps arranged to form an adjustable inner diametrical surface disposed radially inward from the cylindrical body of the housing, relative to a central axis of the adjustable neck. The adjustable inner diametrical surface is configured to engage an outer pipe surface. The adjustable straps are coupled to the inner surface of the cylindrical body. The adjustable neck also includes legs coupled to the adjustable straps and to the mount, where the cylindrical body is configured to be rotated relative to the mount and the legs to adjust a dimension of the adjustable inner diametrical surface to correspond to the outer pipe surface.

A nonreturn valve for an exhaust pipe of a combustion device comprising including a tubular body, a floating body, a valve seat for the floating body disposed inside the tubular body, and a circumferential groove disposed radially inside the tubular body, wherein a radial inner circumferential wall portion is formed at least as a portion of a gas guide channel extending in the direction of the floating body and having a mouth circumferential edge. A tubular buoyancy body having the valve seat is disposed inside the circumferential groove and is formed to be movable in parallel to the radial inner circumferential wall portion between a buoyancy position in which the buoyancy body forms between itself and the mouth circumferential edge a circumferential passage gap connecting the circumferential groove to the gas guide channel and a blocking position closing the passage gap in an axial direction.

An end fitting for an exhaust pipe includes a cylindrical body having an upper opening and a lower opening. An inclined upper board is mounted in the cylindrical body. An upper passage is defined between a side of the upper board and an inner periphery of the cylindrical body. A first set of drain holes is defined in the lowest portion of the upper board. An inclined lower board is mounted in the cylindrical body and is located below the upper board. A lower passage is defined between a side of the lower board and the inner periphery of the cylindrical body. The lowest portion of the lower board is connected to the cylindrical body. The cylindrical body includes a cylindrical wall having a second set of drain holes. A ledge extends from the inner periphery of the cylindrical body and is located below the lower board.

An adjustable neck for a vent cap includes a housing having a mount and a cylindrical body, where the cylindrical body includes an inner surface. The adjustable neck also includes adjustable straps arranged to form an adjustable inner diametrical surface disposed radially inward from the cylindrical body of the housing, relative to a central axis of the adjustable neck. The adjustable inner diametrical surface is configured to engage an outer pipe surface. The adjustable straps are coupled to the inner surface of the cylindrical body. The adjustable neck also includes legs coupled to the adjustable straps and to the mount, where the cylindrical body is configured to be rotated relative to the mount and the legs to adjust a dimension of the adjustable inner diametrical surface to correspond to the outer pipe surface.

A gas flare apparatus includes a burner tube that receives combustible gas and includes (a) a burner tube outer perimeter defined by a burner tube outer diameter and (b) a burner tube inner perimeter defined by a burner tube inner diameter. An updraft shield is concentric with the burner tube and extends outwardly relative to the burner tube outer perimeter to an updraft shield outer perimeter. A windshield tube is concentric with the burner tube and has a windshield tube inner diameter that is larger than the burner tube outer diameter. The windshield tube is positioned above the updraft shield. A cover plate spaced apart from and covering an upper opening of the windshield tube.

The invention provides a device for removing heat from a building, the device having: a first tubular member defining a first cavity; a second tubular member defining a second cavity, whereby said second tubular member resides within the first cavity and is coaxial to the first tubular member; a double conic body coaxially residing in the first cavity and coaxially positioned with the second tubular member; and a flange dimensioned to extend over at least a portion of the periphery of the existing flue so as to aid in supporting the device on the flue.

There is disclosed a flue cap cover for covering a flue cap extending from a building wall. The flue cap cover may be of different colors to match or contrast with the color of the building. The flue cap cover includes a cover, an optional mesh pest guard, a pipe ring and an optional trim ring.

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 water heater heats water with a combustion gas. An exhaust tube includes one end portion and the other end portion, is connected to the water heater at one end portion, and inside thereof is defined as an emission path for the combustion gas. An exhaust pipe is greater in outer diameter than the exhaust tube, and a part of the exhaust tube on a side of the other end portion is introduced in the inside thereof. An exhaust terminal is attached to an end portion of the exhaust pipe and has an exhaust port for exhausting the combustion gas to the outside. An exhaust straightening member is attached to the other end portion of the exhaust tube and has an opening portion for allowing the combustion gas to flow out toward the exhaust port.