A pipe coupling for coupling a first pipe to a second pipe wherein a gap exists between a first pipe end and a second pipe end. The pipe coupling includes a tubular insert configured to fit within the gap and match an inside diameter and outside diameter of the pipes, thereby providing a through-butt joint between the insert and the pipes. The pipe coupling also includes a half-tubular first fitting section and a half-tubular second fitting section, configured to snap-lock and form a tubular shape over the insert, the first pipe end and the second pipe end. In some embodiments, the insert is integral with the fitting sections.

A pipe coupling for coupling a first pipe to a second pipe wherein a gap exists between a first pipe end and a second pipe end. The pipe coupling includes a tubular insert configured to fit within the gap and match an inside diameter and outside diameter of the pipes, thereby providing a through-butt joint between the insert and the pipes. The pipe coupling also includes a half-tubular first fitting section and a half-tubular second fitting section, configured to snap-lock and form a tubular shape over the insert, the first pipe end and the second pipe end. In some embodiments, the insert is integral with the fitting sections.

A low-pressure tubular system, for instance a vacuum tube train transportation system, comprising: a multitude of interconnected tube sections having a longitudinal axis; wherein each of the tube sections comprise a central part and two outer end parts; wherein the tubular system is configured to maintain a low-pressure environment within the connected tube sections; wherein the system further comprises a multitude of expansion joints connecting the tube sections; wherein each of the expansion joints comprises a sleeve made of a flexible sheet material and comprising a ring shaped endless central part and two ring shaped endless outer end parts; and wherein each of the outer end parts of the expansion joints are arranged to extend coaxial with an adjacent tube section and surround and sealingly engage the outer end part of said adjacent tube section.

A coupler for connecting a first fluid conveying member and a second fluid conveying member includes a first coupler half, a second coupler half, and a conductive gasket. In embodiments, at least one of the first coupler half and the second coupler half include an annular groove configured to receive at least a portion of the conductive gasket; the conductive gasket comprises non-metallic material, the first coupler half and the second coupler half are configured to connect and circumferentially surround portions of said first and second fluid conveying members, and the conductive gasket provides a portion of a conductivity path from a first end of the coupler to a second end of the coupler, and may be part of a conductivity path from a first fluid conveying member to a second fluid conveying member. Embodiments of a non-metallic conductive gasket and methods of making a coupler assembly are also disclosed.

A coupler for connecting a first fluid conveying member and a second fluid conveying member includes a first coupler half, a second coupler half, and a conductive gasket. In embodiments, at least one of the first coupler half and the second coupler half include an annular groove configured to receive at least a portion of the conductive gasket; the conductive gasket comprises non-metallic material, the first coupler half and the second coupler half are configured to connect and circumferentially surround portions of said first and second fluid conveying members, and the conductive gasket provides a portion of a conductivity path from a first end of the coupler to a second end of the coupler, and may be part of a conductivity path from a first fluid conveying member to a second fluid conveying member. Embodiments of a non-metallic conductive gasket and methods of making a coupler assembly are also disclosed.

A conduit joint system securing ends of two conduits together includes first and second conduits having first and second flared ends and first and second liners protruding from the flared ends. The liners are joined together so that the flared ends are opposing and spaced from one another and portions of the liners are between the flared ends. An external coupler is configured to receive the flared ends and includes (i) a first flange receiving portion configured to receive the first flared end, (ii) a second flange receiving portion configured to receive the second flared end, and (iii) a body portion extending between the flange receiving portions and configured to receive the portions of the liners between the flared ends. With the liners joined together and with the external coupler receiving the flared ends, and the portions of the liners, the external coupler secures the first and second conduits together.

A fluid circuit, in particular for an aircraft, having at least a first pipe, a second pipe and a connecting fitting, each pipe having a connection end and extending along an axis X, the connecting fitting, movably mounted between the two pipes, being configured to mechanically connect the two connection ends, the connecting fitting having a connecting sleeve and a guide member formed on an outer surface of the connecting sleeve and configured to cooperate with a heater duct so as to guide it between the two pipes, the heater duct being configured to transmit heat to the pipes and to the connecting fitting so as to prevent them from icing up.

A device for axially connecting two pipe elements, including a coupling means with a first coupling means part assignable to a first pipe element, a second coupling means part and an intermediate connecting part arrangeable between the two coupling means parts, wherein a first articulation element formed on the first or second coupling means part is configured to cooperate with a second articulation element formed on the intermediate connecting part, in particular in a positive manner, forming an articulated connection between the first or second coupling means part and the intermediate connecting part, or a second articulation element formed on the first or second coupling means part is configured to cooperate with a first articulation element formed on the intermediate connecting part, forming an articulated connection between the first or second coupling means part and the intermediate connecting part.

A device for axially connecting two pipe elements, including a coupling means with a first coupling means part assignable to a first pipe element, a second coupling means part and an intermediate connecting part arrangeable between the two coupling means parts, wherein a first articulation element formed on the first or second coupling means part is configured to cooperate with a second articulation element formed on the intermediate connecting part, in particular in a positive manner, forming an articulated connection between the first or second coupling means part and the intermediate connecting part, or a second articulation element formed on the first or second coupling means part is configured to cooperate with a first articulation element formed on the intermediate connecting part, forming an articulated connection between the first or second coupling means part and the intermediate connecting part.

An isolator includes a first fluid-carrying member and a second fluid-carrying member; and a resistive, semi-conductive or non-conductive component located between the first and the second fluid-carrying member. The component conveys fluid flowing from the first fluid-carrying member to the second fluid-carrying member. The isolator further has a reinforcing composite encircling the first fluid-carrying member, the second fluid-carrying member and the component. The reinforcing composite having first fibers extending at an angle of between −30 degrees and +30 degrees to a longitudinal axis (A-A) of the resistive, semi-conductive or non-conductive component; second fibers interwoven with the first fibers and extending around the first fluid-carrying member, the second fluid-carrying member and the component at an angle of between +60 degrees and +90 degrees and/or between −60 degrees and −90 degrees to the longitudinal axis (A-A); and a resin.