Systems, apparatus and methods for hot tapping into pressurized, coated duct systems for transporting corrosive substances are disclosed. A branch line may be installed in such systems without shutting down or depressurizing the system using the disclosed systems, apparatus and methods without compromising the system coating or resistance to corrosion from the transported substances. Cut edges created when ductwork is cut to install a branch line are captured and sealed between two gaskets, avoiding the need for recoating with difficult to apply corrosive protection materials such as fluoropolymer coatings.

Systems, apparatus and methods for hot tapping into pressurized, coated duct systems for transporting corrosive substances are disclosed. A branch line may be installed in such systems without shutting down or depressurizing the system using the disclosed systems, apparatus and methods without compromising the system coating or resistance to corrosion from the transported substances. Cut edges created when ductwork is cut to install a branch line are captured and sealed between two gaskets, avoiding the need for recoating with difficult to apply corrosive protection materials such as fluoropolymer coatings.

Apparatus and method for shielding leakage from a flanged pipe coupling comprising: a housing having a front wall, a rear wall, and a top wall, the top wall depending downwardly to form side walls intermediate the front and rear walls thus forming a closure having a bottom which is open; wherein the housing contains an interior space in between the front and rear wall and below the top wall, the interior space shaped to fit around a flanged pipe coupling; and wherein the housing is shaped so as to prevent rotation of the apparatus with respect to the flanged pipe coupling.

A gasket assembly (200) for use in a fluid conveyance system (100) is provided. The gasket assembly (200) includes first ring (202) circumscribing a flow channel (104) and comprising an inner surface (216) having a notch (218) formed therein. The gasket assembly (200) also includes a dust shield (206) at least partially inserted into the notch (218). The dust shield (206) is positioned between the first ring (202) and the flow channel (104) to prevent particulates of the first ring (202) from entering the flow channel (104).

An exhaust conduit for a marine exhaust system includes an inlet end portion connectable to an exhaust manifold, an outlet end portion that directs exhaust gases toward an exhaust system outlet, a catalytic converter assembly arranged between the inlet and outlet end portions, and inner and outer tubes. The inner tube directs exhaust gases from the exhaust manifold to the catalytic converter assembly, and the outer tube surrounds the inner tube to define a cooling liquid passage between the inner and outer tubes. A flange is secured to the inner and outer tubes at inlet ends thereof, the flange being connectable to an outlet of the exhaust manifold. The inner tube has a uniform diameter between the flange and the catalytic converter assembly, and is welded to the flange independently of the outer tube. First and second welds join the inner and outer tubes to the flange at radially inner and outer faces, respectively, of a flange rim.

An exhaust conduit for a marine exhaust system includes an inlet end portion connectable to an exhaust manifold, an outlet end portion that directs exhaust gases toward an exhaust system outlet, a catalytic converter assembly arranged between the inlet and outlet end portions, and inner and outer tubes. The inner tube directs exhaust gases from the exhaust manifold to the catalytic converter assembly, and the outer tube surrounds the inner tube to define a cooling liquid passage between the inner and outer tubes. A flange is secured to the inner and outer tubes at inlet ends thereof, the flange being connectable to an outlet of the exhaust manifold. The inner tube has a uniform diameter between the flange and the catalytic converter assembly, and is welded to the flange independently of the outer tube. First and second welds join the inner and outer tubes to the flange at radially inner and outer faces, respectively, of a flange rim.

An adapter for connecting a fluid line to a housing section of a turbomachine is disclosed. A lower and an upper pair of flanges are arranged offset from each other about a channel axis of a fluid channel and are arranged without a space between each other in a direction of the channel axis, where the feed-throughs of the upper pair of flanges are open circumferentially.

An adapter for connecting a fluid line to a housing section of a turbomachine is disclosed. A lower and an upper pair of flanges are arranged offset from each other about a channel axis of a fluid channel and are arranged without a space between each other in a direction of the channel axis, where the feed-throughs of the upper pair of flanges are open circumferentially.

A fluid flow accessory is provided for coupling to an opening formed in a wall portion. The fluid flow accessory includes a cup having an edge configured to engage a first surface of the wall portion; and a coupling member including coupling arrangement configured for coupling to the cup and a first flange configured to be inserted through the opening in a first orientation thereof with respect to the opening, and for abutting against a second surface of the wall portion in a second orientation thereof with respect to the opening, and a fastening member protruding towards the first flange and being disposed such that in the second orientation it engages a segment of the wall portion thereby limiting the displacement of the coupling member into the first orientation.

A flexible hose end fitting assembly includes a first portion defining a first fluid passageway and having a first end configured for coupling to a fluid conduit, a second portion defining a second fluid passageway and having a first end configured for coupling to a second end of the first portion and a second end configured for securely affixed to a flexible hose. A gasket is disposed in a groove formed in an interface between the first portion and the first end of the second portion of the assembly, and the first portion and the first end of the second portion of the assembly are securely fastened together by a plurality of threaded fasteners to form a continuous fluid passageway between the fluid conduit and the flexible hose. A flexible hose end fitting assembly includes a first portion defining a first fluid passageway and having a first end configured for coupling to a fluid conduit, a second portion defining a second fluid passageway and having a first end configured for coupling to a second end of the first portion and a second end configured for securely affixed to a flexible hose. A gasket is disposed in a groove formed in an interface between the first portion and the first end of the second portion of the assembly, and the first portion and the first end of the second portion of the assembly are securely fastened together by a plurality of threaded fasteners to form a continuous fluid passageway between the fluid conduit and the flexible hose.