Provided is a connector to be connected to a first pipe including a bulged portion. The connector includes a retainer. The retainer is movable between a standby position and a restraining position. The retainer includes a locking leg and a biasing leg. The locking leg includes a locking part to be locked to a connector body when the retainer is in the standby position and when the retainer is in the restraining position. The locking leg moves radially outward by contacting with the bulged portion, to thereby release locking of the locking part. The biasing leg is elastically deformed radially outward by contacting with a leading end portion of the first pipe, which is located on a leading end side with respect to the bulged portion, to thereby bias the retainer in a direction toward the restraining position.

Connecting device (1), comprising: •—a bush (2), •—an end piece (6) which can be inserted into the bush (2) and is provided with a collar (7), •—a locking device (8) comprising an annular lock (9) which is radially movable inside the bush (2) and a return member (10) for returning the lock (9) to a locked position for retaining the collar (7) of the end piece (6) beyond the lock (9), •—a visual locking indicator (11) which is radially movable between an extended position of the bush (2) and a retracted position and is provided with tabs (12) for returning to the extended position. When the collar (7) of the end piece (6) is inserted beyond the lock (9), the indicator (11), which has the shape of a ring (110), surrounds the collar (7) of the end piece (6) retaining the indicator (11) in the retracted position and the tabs (12) for returning the indicator (11) are axially offset from the ring (110) with respect to direction of insertion of the end piece (6) in the bush (2).

Couplings are disclosed herein. A plug of a coupling includes a plug body and a socket interface coupled to the plug body. The socket interface includes a shoulder extending axially outward from the plug body, a neck extending axially outward and radially inward from the shoulder, and a socket guide extending axially outward and radially outward from the neck.

A valve connector includes a housing and a pressing device. The housing includes an operative end, a coupling end, and a through-hole extending from the operative end through the coupling end. The pressing device includes a push seat received in the through-hole and located between the lever and the coupling end and a lever abutting against the push seat and pivotably connected to the housing. The push seat includes a first passageway. The lever includes a second passageway and is operable to move the push seat. When the lever is in a release position, the first passageway does not intercommunicate with the second passageway. When the lever moves from the release position to a locking position, the push seat moves towards the coupling end, and the first passageway intercommunicates with the second passageway when the lever is in the locking position.

In the transportation of hydrogen using pipelines, existing oil and natural gas pipelines can be retrofitted with inner tubes defining an inter-space between the outer surface of the inner tubes and the pipelines, and providing a fluid at in the inter-space at a higher pressure than that of the hydrogen in carried in inner tube.

A locking element (30) for releasably fixing a fluid-conducting plug (40) to a connector (10) that has at least one spring element (311) for a sprung preload into a locking position with at least one trigger element (35) for transferring from a receiving position into the locking position. At least two trigger elements (35) are provided on the locking element (30), wherein for a transfer to the locking position, a simultaneous actuation of the trigger elements (35) is required.

A locking member is mounted to the housing to be able to move in the outer diameter direction by a tapered portion of the tubular body, when the tubular body is inserted. The housing is equipped with slits formed to pass a curved portion bent in the inner diameter direction disposed at a leading-end side of the locking member and to lock with the engagement portion of the tubular body mounted on the housing. A gap is disposed between the curved portion, and the end portion of the slit positioned at a side in an opposite direction to the leading-end side of the locking member, so that there is no contact while at least the locking member is moving.

Some fluid coupling devices described herein are configured for use in fluid systems for purposes of providing a sterile connection for drug delivery. In some embodiments, the fluid coupling devices can be implemented as multi-use, sterile fluid coupling devices that are configured to reduce the likelihood of fluid spillage when being disconnected.

This document describes fluid handling couplings. For example, this document describes fluid handling couplings that are genderless, that include manually openable valves, and that are configured for single-use aseptic fluid handling usage.

A pipe union assembly that includes a female end of a first pipe section and a male end of a second pipe section. The pipe union assembly also includes a quick union nut securable to the female end, a retainer collar securable to the quick union nut and a segmented load ring disposed between the male end of the second pipe section and the quick union nut. The quick union nut, the retainer collar and the segmented load ring cooperate to maintain the male end of the second pipe section inside the female end of the first pipe section. A method of using the pipe union assembly to join a first pipe section and a second pipe section.