A fitting is attached to a composite pipe by inserting a tubular root portion of the fitting into an end of the pipe and then tensioning longitudinally-extending tensile elements distributed around the fitting. This moves an outer wedge component of the fitting longitudinally relative to the pipe to force an opposed inner wedge formation radially inwardly toward the roof portion, clamping the fitting to the pipe. The fitting may be an end fitting to enable the pipe to be joined to another pipe or conduit, or may be an in-line fitting used to join two lengths of pipe end-to-end.

A pipe coupling has two segments with angularly oriented action surfaces in facing relationship. The action surfaces induce relative rotation between the segments when the segments are drawn together to engage the pipe elements being joined. Attachment elements on each segment, in the form of lugs, accommodate adjustable fasteners which draw the segments together when tightened. Angularly oriented support surfaces on the lugs engage one another and react the fastener force. Stop surfaces are positioned on the lugs adjacent to the support surfaces. Engagement between the stop surfaces limits the relative rotation between the segments.

A pipe coupling has two segments with angularly oriented action surfaces in facing relationship. The action surfaces induce relative rotation between the segments when the segments are drawn together to engage the pipe elements being joined. Attachment elements on each segment, in the form of lugs, accommodate adjustable fasteners which draw the segments together when tightened. Angularly oriented support surfaces on the lugs engage one another and react the fastener force. Stop surfaces are positioned on the lugs adjacent to the support surfaces. Engagement between the stop surfaces limits the relative rotation between the segments.

A fluid conduit interlock comprises at least one retention member for engaging a fluid conduit, the or each retention member configured to be movable between a retention position for retaining the fluid conduit and a release position for releasing the fluid conduit, a valve member configured to be movable between a valve open position for opening a hollow bore and a valve closed position for closing the hollow bore, and an interlock mechanism configured to operably link the movement of the or each retention member and the movement of the valve member so that the or each retention member in the release position locks the valve member in the valve closed position and so that the valve member in the valve open position locks the or each retention member in the retention position.

A fluid conduit interlock comprises at least one retention member for engaging a fluid conduit, the or each retention member configured to be movable between a retention position for retaining the fluid conduit and a release position for releasing the fluid conduit, a valve member configured to be movable between a valve open position for opening a hollow bore and a valve closed position for closing the hollow bore, and an interlock mechanism configured to operably link the movement of the or each retention member and the movement of the valve member so that the or each retention member in the release position locks the valve member in the valve closed position and so that the valve member in the valve open position locks the or each retention member in the retention position.

A system (1) for providing a sterile fluid connection between a first fluid channel (2) and a second fluid channel (3), comprising a first coupling element (5) arranged at an orifice (4) of the first fluid channel (2) and a second coupling element (6) arranged at an orifice (4) of the second fluid channel (3), wherein the first coupling element (5) and the second coupling element (6) each comprise a foil (7) that may be peeled off of the orifice (4), wherein the system (1) comprises a connecting element (8) separated from the first coupling element (5) and the second coupling element (6), which is configured to accommodate the first coupling element (5) and the second coupling element (6) in the region of the orifices (4) and to press the orifices (4) of the fluid channels (2, 3), which are closed by the foils (7), against one another, wherein the connecting element (8) has a recess (9) arranged essentially in the plane of the orifices (4) of the fluid channels (2, 3) for passing the foils (7) through the connecting element (8).

A system (1) for providing a sterile fluid connection between a first fluid channel (2) and a second fluid channel (3), comprising a first coupling element (5) arranged at an orifice (4) of the first fluid channel (2) and a second coupling element (6) arranged at an orifice (4) of the second fluid channel (3), wherein the first coupling element (5) and the second coupling element (6) each comprise a foil (7) that may be peeled off of the orifice (4), wherein the system (1) comprises a connecting element (8) separated from the first coupling element (5) and the second coupling element (6), which is configured to accommodate the first coupling element (5) and the second coupling element (6) in the region of the orifices (4) and to press the orifices (4) of the fluid channels (2, 3), which are closed by the foils (7), against one another, wherein the connecting element (8) has a recess (9) arranged essentially in the plane of the orifices (4) of the fluid channels (2, 3) for passing the foils (7) through the connecting element (8).

A pipe fitting includes a socket that receives an end of a pipe section therein such that a gap exists between an outer surface of the pipe section and an inner surface of the socket. A pair of ports extend through the socket and are in fluid communication with the gap. A clamp secures the pipe section within the socket as a bonding agent is extruded into the gap via a port. The clamp includes a pair of arcuate segments, each having an inner circumferential wall, first and second end portions, and an elongated sealing member. Each arcuate segment includes a plurality of spring-loaded devices, each having a distal end portion extending through the inner circumferential wall that is urged into contact with the pipe section outer surface.

A pipe fitting includes a socket that receives an end of a pipe section therein such that a gap exists between an outer surface of the pipe section and an inner surface of the socket. A pair of ports extend through the socket and are in fluid communication with the gap. A clamp secures the pipe section within the socket as a bonding agent is extruded into the gap via a port. The clamp includes a pair of arcuate segments, each having an inner circumferential wall, first and second end portions, and an elongated sealing member. Each arcuate segment includes a plurality of spring-loaded devices, each having a distal end portion extending through the inner circumferential wall that is urged into contact with the pipe section outer surface.

A push joint adapter is connectable to one or more push joint pipe fittings in a pipeline. The push joint adapter includes an insertion section insertable into a socket of a push joint pipe fitting in an interference fit, a pipeline section connectable with the pipeline, and a collar disposed between the insertion section and the pipeline section. A restraint ring assembly cooperable with the push joint pipe fitting includes a restraint ring secured to the pipeline section and engaging the collar and a restraint rod connected to the restraint ring. The push joint adapter facilitates connecting push joint gasketed bell gate valves and fittings in a pipeline such as a polyethylene pipeline.