Fittings that generally include a unitary body having an outer surface and an inner lumen forming a void within said unitary body. The lumen is configured to receive threads for mating with the threads of a female sub end of a pipe or tube. The outer surface includes at least one aperture for receiving a tool that can be inserted within said aperture so as to rotate the fitting about an axis that extends through the lumen of the unitary body. The at least one apertures provide a safe and convenient way to tighten and loosen the fitting during the process of coupling pipe or tubing.

Fittings that generally include a unitary body having an outer surface and an inner lumen forming a void within said unitary body. The lumen is configured to receive threads for mating with the threads of a female sub end of a pipe or tube. The outer surface includes at least one aperture for receiving a tool that can be inserted within said aperture so as to rotate the fitting about an axis that extends through the lumen of the unitary body. The at least one apertures provide a safe and convenient way to tighten and loosen the fitting during the process of coupling pipe or tubing.

A method for treating a pipe, in particular a motor vehicle pipe, wherein a flare is generated at least at one pipe end of the pipe. At least areas of the flare are provided with at least one layer, which changes the friction properties of the coated surface of the flare. The flare is coated by means of plasma coating.

A fitting for fluidic coupling in a chromatography system includes a compression screw including an axial bore, a threaded portion, and a drive end, a tube assembly including a tube sleeve and an inner tube disposed through the sleeve, the tube sleeve and the inner tube each extending to an endface of the tube assembly, the tube sleeve including an outer surface, a seal body extending between a first endface and a second endface, the first endface abutting the endface of the tube assembly, the seal body including an outer surface, and a collar secured to the outer surface of the tube sleeve and the outer surface of the seal body. Other Fittings, Methods of manufacture of fittings, and methods of fluidic coupling are further disclosed.

A push-fit type fitting that can be used to connect a pipe to either another pipe or a variety of other fittings. The fitting includes a visual indicator that provides a visual confirmation to the user once the pipe has been correctly retained in the device.

Couplings for joining pipe elements have segments with attachment members with faces which contact one another when the segments are properly installed on the pipe elements. Each segment has one or more shrouds and recesses positioned along the faces. The shrouds on one segment are received within respective recesses on the other segment. The shrouds block the line of sight toward the central space which the segments surround and which receives the pipe elements. Index markings on the segments show visual inspection points to confirm proper engagement between the segments and the pipe elements.

Embodiments provide a fitting for tubing connection, a male fitting assembly, and a torque adaptor. The fitting for tubing connection includes a head including a plurality of first gripping portions, each first gripping portion extending from a top of the head; and a shaft attached to the head, wherein the shaft comprises a plurality of external threads.

A pipe joint includes first and second sleeves having fluid flow paths communicating with each other; an annular gasket interposed between abutting end surfaces of the sleeves; a male screw member having a through hole into which the first sleeve is inserted; and a female screw member having a through hole into which the second sleeve is inserted, the sleeves being joined by screwing the male screw member with the female screw member, wherein the pipe joint has a leak port opened at a portion of the outer peripheral surface of the male screw member not covered by the female screw member and communicates with a gap between the male screw member and the first sleeve to detect a leak fluid leaked from gaps between the sleeves and the gasket.

Provided is joint unit having a resin tube, a joint structure, and a nut, the joint structure has a guide part that guides the outer circumferential face of the resin tube, a protrusion that forms an insertion groove between the guide part and the protrusion, and a fixing part that fixes the resin tube inserted in the insertion groove, the tip of the protrusion is located closer to a main body than the tip of the guide part, the nut has a recessed part having an inner diameter greater than a first outer diameter of the guide part and smaller than a second outer diameter of the fixing part, and the tip of the fixing part in contact with the recessed part bites into the outer circumferential face of the resin tube in a state where the nut is fastened to the joint structure.

A multi-seal coupling for fluidly interconnecting a first component and a second component within a hydrogen fuel supply system of a gas turbine engine includes a female joint portion and a male joint portion. A first seal, a second seal and a third seal, all of which are hydrogen fuel seals, are formed between the male joint portion and the female joint portion. The first seal is formed by face-to-face abutting contact between a first axially-facing surface of the male joint portion and an axially-facing surface of the female joint portion. The second seal is formed by a gasket axially compressed between the first axially-facing surface of the male joint portion and the female joint portion. The third seal is formed by a sealant ring disposed between a second axially-facing surface of the male joint portion and an adjacent surface of the female joint portion.