An improved coupling system for joining two items together, typically in the form of copper pipes, to other copper pipes, or in the form of other fittings, includes a pair of flange couplings, each of which is independently secured to one of the items to be joined together so that when the two flange couplings are securely joined to each other by suitable fasteners received through fastening apertures in the two flange couplings, the two items are sealingly joined to one another to form a substantially water tight junction. The improvement being that the bare metal parts of the ferrous components of the coupling are coated with a protective coating, such as a copper coating, so that there is no direct contact between two dissimilar metals thereby inhibiting or preventing corrosion of the metal components of the coupling due to electrolytic or galvanic action arising from direct contact between the two dissimilar metals.

A connector for use in an ultra-high vacuum system is disclosed herein. The connector has a metal conduit section with a first hardness, a metal fitting with a second hardness greater than the first hardness, and a metallic reaction-inhibiting barrier positioned between the conduit section and the fitting to sealingly attach the fitting to the conduit section. In some embodiments, application of a mechanical stressor such as stretching or treatment with a mechanical oxide disruptor removes oxide from and prevents oxide re-formation on the faying surface of the conduit section. In alternate embodiments, oxide is removed from the faying surface of the conduit section and oxide re-formation is subsequently prevented by applying an oxide inhibitor. The reaction-inhibiting barrier substantially inhibits metallic and chemical interaction between the conduit section and the fitting under ultra-high vacuum, temperature cycling, mechanical stress, and reactive chemical conditions, as are present during manufacturing.

A pipe cleaning assembly has a connection fixture having a body defining a cavity. A first aperture, opposing first auxiliary aperture coaxially aligned with the first aperture, second aperture, and opposing second auxiliary aperture coaxially aligned with the second aperture are in fluid communication with the cavity. A first connection flange extends from and surrounds the first aperture, a second connection flange extends from and surrounds the second aperture, a third connection flange extends from and surrounds the first auxiliary aperture, and a fourth connection flange extends from and surrounds the second auxiliary aperture. A first valve is connected to the third connection flange to control fluid flow through the first auxiliary aperture.

A system and a method for reducing band clamp failure on a multi-piece canister having an at least one first section coupled to an at least one second section by a band clamp, the system and method comprising a band clamp cover, wherein the band clamp cover comprises a cover first section and a cover second section, the cover first section is coupled to the cover second section at a first end by a hinge, the cover first section is coupled to the cover second section at a second end by removable fastener, the band clamp cover having a shape of the multi-piece cannister, wherein the band clamp cover has a channel that encompasses the band clamp.

A system for making a connection between a first tubular member and a second tubular member having coincident bores for conveying a fluid, the connection having an axis in the general direction of flow of said fluid therethrough, the system comprising a connection (1) and a tensioning tool (100), the connection having a first tubular end (6) comprising a first end flange (16) having an end face (17) and a collar (20) comprising a sleeve (21) and an end stop (30) fixed to the sleeve (21), said sleeve (21) arranged about said flange (18) and said end stop (30) arranged about said tubular end (6), said collar (20) slideable along said tubular end (6), the connection further having a second tubular end (7) comprising a second end flange (43) having an end face (45) and a locking nut (50) about and slideable along said first tubular end (7), the tensioning tool (100) for applying axial tension to said collar (30) relative to said second tubular end (7) characterised in that at least one of said sleeve (20) and said second tubular end (7) has a set of parallel circumferential grooves (23,47) therein and said tensioning tool (100) has a set of ridges (142), the system comprising the steps of moving said set of ridges (142) into said set of grooves (23,47) and applying an axial tension to said collar (20) relative to said second tubular end (7).

A flanged fitting includes an annular fitting flange having an annular end face. A glass liner lines a radially inner annular portion of the annular end face of the annular fitting flange. A radially outer annular portion of the annular end face of the annular fitting flange is free from the glass liner. The radially inner annular portion and the radially outer annular portion of the annular end face of the annular fitting flange define an annular gasket abutment face configured to seat a gasket thereon. An annular gasket includes an annular gasket layer. The annular gasket layer includes a radially inner annular gasket segment including a first material suitable for forming a liquid-tight seal with an opposing flange. A radially outer annular gasket segment surrounds the radially inner annular gasket segment. The radially outer annular gasket segment is fire-rated for forming a fire-rated seal with the opposing flange.

Clamping apparatus is provided for clamping two or more items together. The clamping apparatus includes at least one clamping member having an inner surface arranged to be brought into contact with an outer surface of at least one of the items being clamped. Thermal insulating means are provided between the inner surface of the at least one clamping member and the outer surface of said at least one item.

A pipe assembly includes a flexible pipe segment and at least one end fitting. The at least one end fitting includes an end casing coupled to the flexible pipe segment and a seal housing removably coupled to the end casing. The end casing defines a seal housing-receiving bore extending longitudinally through the end casing, and the seal housing is positioned within the seal housing-receiving bore. The seal housing defines at least one seal bore extending from an axially distal surface of the seal housing, and one or more sealing elements are seated in a respective one of the at least one seal bore. The end casing is couplable to a counterpart fitting, and the seal housing and/or the one or more sealing elements are configured to define a sealing interface with the counterpart fitting.

The embodiments of the present disclosure provide a detachable anti-vibration sealing protection device for a pipe flange. The protection device includes a casing, wherein left and right end surfaces of the casing have through holes for the pipeline to pass through, and the casing has an accommodation cavity for placing the flange; a first shock absorption assembly for radial shock absorption of the flange; and a second shock absorption assembly which is installed in a one-to-one correspondence with the flange and is configured for axial shock absorption of the corresponding flange. The first shock absorption assembly and the second shock absorption assembly are installed in the accommodation cavity.

A flange tab system includes a first member having a first-member-first-portion and a first-member-second-portion, a second member having a second-member-first portion and a second-member-second-portion, a third member, and a ring-like member. The flange tab system provides an electrical fitting for electrical current flow between pipelines or other structures. The flange tab system is configured to secure a wire to a pipeline for cathodic protection and various other applications.