A fluid connection assembly, including a connector body, including a first end, a second end, a first through-bore, a first radially outward facing surface including at least one aperture extending from the first radially outward facing surface to the first through-bore, and at least one engaging element arranged in the at least one aperture, and a collar connected to the connector body, the collar including a radially inward facing surface engaged with the first radially outward facing surface and including at least one pocket extending radially outward therefrom, and a second radially outward facing surface.

A quick connector of a fuel transfer line is provided. The quick connector is fastened to a fuel inflow/outflow nipple of a fuel transfer line and includes a connector casing that has a rear end to which a fuel inflow/outflow nipple is inserted and fastened. Additionally, a bypass cylinder is inserted into a front end of the connector casing in a linearly movable manner by hydraulic pressure of fuel and forms a flow path for a selective flow of fuel depending on a location within the connector casing.

Provided is a connector which can facilitate tuning of frequency of pulsation to be reduced and prevent sealing performance from degrading when a piston moves. A pulsation reducing member adopts a structure in which the piston moves in a cylinder. The cylinder has an annular flange portion projecting in a radially inner direction of a hollow cylindrical shape. An elastic sealing member is sandwiched in a compressed state between an end surface of the flange portion of the cylinder and an end surface of the piston. An urging body is disposed in a region in the cylinder on a side of the piston opposite to a passage and applies urging force to move the piston toward the passage and compress the elastic sealing member.

Fluid coupling containing two coupling halves that can be coupled to one another via connecting elements, each of the coupling halves containing: a housing, which has an end face, the end face having at least one connecting element for the mutual connection of the coupling halves, the housing having an end-face connecting face, the connecting faces of the two coupling halves contacting one another when in the coupled state; a spherical valve element; a locking element, which can be mutually operated via the connecting elements and releases rotary levers; and a rotary lever for operating the valve element, wherein the locking element is arranged in the housing such that it can be displaced parallel to the throughflow direction or longitudinal axis, wherein the locking element is displaced parallel to the throughflow direction or longitudinal axis, and the rotary lever is released, by the coupling halves hooking into one another vertically relative to the throughflow direction or longitudinal axis.

A two-way twin-axial connector module of a receptacle for transporting liquefied gas is provided, including a male connector connected to an end of a transferring pipe incorporating a first supply line for supplying liquefied gas and a first return line for retrieving the vaporized gas, including a pair of male bayonets formed to protrude and surround protruding portions of the first supply line and the first return line, respectively, which are formed to protrude outward through the end of the transferring pipe, and a female connector incorporating a second supply line for supplying liquefied gas and a second return line for retrieving vaporized gas, to be connected to a supply source for supplying liquefied gas or a storage tank for storing liquefied gas, including a pair of female bayonets concavely formed and connecting with the second supply line and the second return line, respectively.

A joint assembly and a faucet include a first coupling portion and a second coupling portion. A first connecting structure and a first guide structure are disposed on the first coupling portion. A connecting structure and a second guide structure are disposed on the second coupling portion. The second coupling portion and the first coupling portion are sleeved with each other. The first guide structure and the second guide structure cooperate with each other to limit a movement direction of the first coupling portion and a movement direction of the second coupling portion in a sleeving process, so that the first connecting structure is aligned with the second connecting structure; The first connecting structure and the second connecting structure cooperate with each other to position the first coupling portion and the second coupling portion after the second coupling portion and the first coupling portion are sleeved with each other.

A reversibly-releasable coupling for a plug-in connection on pipes and hoses, for connection to a tubular plug having at least one latching shoulder or edge running at least partially around the outer circumference, includes at least one locking element assuming, when the plug is fully inserted, a locking position where a locking section is pivoted towards the plug and, via a locking edge, fixedly engages behind the plug locking shoulder or edge. The section lies completely inside the locking ring, axially releasing it. An elastic element presses the ring axially from an open into a locking position completely overlapping the section. The locking element is pivotable about an axis relative to the coupling sleeve between open and locking positions. It has a lever-like portion extending in the circumferential direction of, and latched in the open position relative to, the sleeve. Inserting the plug releases the portion from the latched position.

The disclosure relates to a plug connector for connecting pipes for liquids or gaseous media, comprising a connector body and a locking element. An indicator element includes an indicator surface, wherein the indicator element is pretensioned by a spring element into an indicator position and can be moved between a rest position, in which the indicator surface is at least partly covered, and the indicator position, in which the indicator surface is visible, wherein the indicator element is coupled to a first latching element and a second latching element. The first latching element is configured to hold the indicator element in the rest position against the spring force of the spring element and the second latching element is configured to hold the indicator element in an intermediate position between the rest position and the indicator position against the spring force of the spring element.

A liquid-cooling quick connector device includes first and second connectors that are mateable with each other. The first connector includes a first connector body and a locking mechanism having a button body, a top button cover movably disposed on the button body, a locking key movably disposed on the top button cover, a first elastic member disposed between the button body and the first connector body, and a second elastic member disposed between the locking key and the top button cover. When the first and second connectors are being mated, the button body is downwardly movable without unlocking the locking key. Unlocking is not achievable by pressing the top button cover. The locking key needs to be moved (slid) and downwardly pressed for driving the button body to perform unlocking. Accordingly, accidental unlocking is prevented, and mating is allowed when a secondary lock is at a locking position.