A connection element for an exhaust system of an internal combustion engine includes a connection element body extending in the direction of a connection element longitudinal axis. An inner circumferential surface of the connection element body delimits an exhaust gas passage of the connection element and a connecting flange extends radially outward from the connection element body and surrounds the longitudinal axis. The connecting flange has an abutment surface oriented in the direction of a first axial end of the connection element body. A section of the connection element body defines the first axial end thereof. A centering section has a centering outer circumferential surface and a depression surrounds the longitudinal axis and has a depression surface which is offset axially in the direction away from the first axial end with respect to the abutment surface.

The clamping collar comprises a metal belt carrying a protruding lug in the vicinity of a first end and a hook in the vicinity of a second end. The hook has a front wall and a common part. The wall is intended to be retained behind the lug while the hook is hooked on the lug to keep the collar in the clamped state. The common part links the front wall to the belt and has a gripping surface protruding radially outwardly and two lateral borders which extend axially on either side of the gripping surface by being radially set back from the gripping surface.

A valve and coupling for joining pipe elements has a valve body captured in a central space defined by a plurality of coupling segments attached to one another end to end. The inner surface of the valve body defines a bore. A liner on the inner surface surrounds the bore and forms a seal with a valve closing member. Circumferentially arranged projections on the segments engage and center the valve body within the central space. The liner has lobes that extend axially in opposite directions. The lobes are compressed between the segments and the pipe elements to form a fluid tight seal when connection members are tightened to draw the segments toward the central space and into engagement with the pipe elements.

A valve and coupling for joining pipe elements has a valve body captured in a central space defined by a plurality of coupling segments attached to one another end to end. The inner surface of the valve body defines a bore. A liner on the inner surface surrounds the bore and forms a seal with a valve closing member. Circumferentially arranged projections on the segments engage and center the valve body within the central space. The liner has lobes that extend axially in opposite directions. The lobes are compressed between the segments and the pipe elements to form a fluid tight seal when connection members are tightened to draw the segments toward the central space and into engagement with the pipe elements.

The invention relates to a part (2) for coaxial connection of two tubes, characterised in that it comprises two connection portions (6, 7) each provided with an area (15) for receiving a connection element of each tube, and in that the two connection portions (6, 7) are capable of sliding inside one another, between a separated position of the two portions (6, 7) and a tightened position of the two portions (6, 7) in which the two receiving areas (15) form a closed contour and are capable of holding the connection elements (31, 41) together, and in that the part (2) comprises at least one radial return element (14) intended for pre-positioning the part (2) on an end region of the tubes.

A retention device for attaching an insulation element to a V band clamp or to another device for connecting pipe ends. The retention device includes closure elements that cooperate to permit the outer and/or inner circumference of the retention device to be decreased. The retention device further includes a bendable belt segment that may be placed about an insulation element as part of an outer covering or like a type of outer covering.

A tubular joint comprising first and second tubular members, an annular sealing element positioned between the tubular members and a clamping device for clamping the tubular members to each other with an end face of the first tubular member in contact with an end face of the second tubular member. The sealing element comprises an annular metallic body. Two sealing surfaces on the metallic body are designed to mate with tapered sealing surfaces on the tubular members. A first spring-energized polymeric seal member is mounted to the metallic body and configured to be in sealing contact with a radially extending sealing surface on the first tubular member. A second spring-energized polymeric seal member is mounted to the metallic body and configured to be in sealing contact with a radially extending sealing surface on the second tubular member. Seal members are prestressed upon clamping of the tubular members to each other.

A tubular joint comprising first and second tubular members, an annular sealing element positioned between the tubular members and a clamping device for clamping the tubular members to each other with an end face of the first tubular member in contact with an end face of the second tubular member. The sealing element comprises an annular metallic body. Two sealing surfaces on the metallic body are designed to mate with tapered sealing surfaces on the tubular members. A first spring-energized polymeric seal member is mounted to the metallic body and configured to be in sealing contact with a radially extending sealing surface on the first tubular member. A second spring-energized polymeric seal member is mounted to the metallic body and configured to be in sealing contact with a radially extending sealing surface on the second tubular member. Seal members are prestressed upon clamping of the tubular members to each other.

A subsea arrangement including a base structure; a tubular member rotatably mounted to the base structure through an annular bearing, wherein a section of the envelop surface of the tubular member is covered by a layer of thermally insulating material; a ring-shaped insulating member of open cell polymer foam mounted to the tubular member, wherein an inner edge of the insulating member is in contact with the envelop surface of the tubular member and the insulating member protrudes radially from the tubular member. The insulating member is positioned between an inner edge of the layer and the annular bearing with a first lateral surface of the insulating member in sliding contact with the inner edge of the layer and with an opposite second lateral surface of the insulating member in contact with a part of the annular bearing.

A subsea arrangement including a base structure; a tubular member rotatably mounted to the base structure through an annular bearing, wherein a section of the envelop surface of the tubular member is covered by a layer of thermally insulating material; a ring-shaped insulating member of open cell polymer foam mounted to the tubular member, wherein an inner edge of the insulating member is in contact with the envelop surface of the tubular member and the insulating member protrudes radially from the tubular member. The insulating member is positioned between an inner edge of the layer and the annular bearing with a first lateral surface of the insulating member in sliding contact with the inner edge of the layer and with an opposite second lateral surface of the insulating member in contact with a part of the annular bearing.