A end-piece having a hollow tubular body having a longitudinal main axis X and provided with a plurality of longitudinal slots extending from an open end of the end-piece and delimiting a plurality of snap-fitting tabs, each provided with a snap-fitting leg delimited axially by a radial shoulder and extending axially by a guide ridge towards said free end, the guide ridge having a top corresponding to a maximum snap-fitting force linked to the crossing of said top. At least first and second tabs defining respectively first and second tops, the tops are axially shifted relative to each other.

A end-piece having a hollow tubular body having a longitudinal main axis X and provided with a plurality of longitudinal slots extending from an open end of the end-piece and delimiting a plurality of snap-fitting tabs, each provided with a snap-fitting leg delimited axially by a radial shoulder and extending axially by a guide ridge towards said free end, the guide ridge having a top corresponding to a maximum snap-fitting force linked to the crossing of said top. At least first and second tabs defining respectively first and second tops, the tops are axially shifted relative to each other.

Couplers are described herein. A coupler includes a coupler body, a plurality of first retaining fingers, and a plurality of second retaining fingers. The coupler body includes a first end and a second end, and defining a cavity, the cavity configured to receive a first connector and a second connector. The plurality of first retaining fingers are configured to engage against a collar of the first connector to prevent axial motion of the first connector relative to the coupler. The plurality of second retaining fingers are configured to engage against a shoulder of the second connector with a retention force, and release the second connector by radially expanding in response to a pullout force exerted on the second connector exceeding the retention force.

A connector for forming a fluid flow pathway by connection with a reciprocal connector. Both the connector and reciprocal connector include a fluid flow blockage part sheathed within an axially compressible sheath part. A first bearing surface receives an urging force to retract the blockage part axially along the sheath part. A terminal end of the sheath part defines a second bearing surface containing a fluid flow opening with the fluid flow blockage part retractably therein. A first chassis part includes a first catch part. A second chassis part includes a second catch part and a third bearing surface spaced from the second catch part along the second chassis part. Retraction of the blockage part forms a fluid flow pathway not sooner than immediately when the openings meet to allow fluid transfer the openings avoiding fluid leakage between connected connectors.

A connector for forming a fluid flow pathway by connection with a reciprocal connector. Both the connector and reciprocal connector include a fluid flow blockage part sheathed within an axially compressible sheath part. A first bearing surface receives an urging force to retract the blockage part axially along the sheath part. A terminal end of the sheath part defines a second bearing surface containing a fluid flow opening with the fluid flow blockage part retractably therein. A first chassis part includes a first catch part. A second chassis part includes a second catch part and a third bearing surface spaced from the second catch part along the second chassis part. Retraction of the blockage part forms a fluid flow pathway not sooner than immediately when the openings meet to allow fluid transfer the openings avoiding fluid leakage between connected connectors.

A quick connect and disconnect system for a fluid coupling includes an axially extending fitting configured to be secured to a fluid conduit, a clip, and a quick connect and disconnect adaptor. The clip is coupled to the fitting and includes a base, a wing extending from the base, and a first lug extending from the first wing. The quick connect and disconnect adaptor includes a first release tab configured to resiliently deflect through an aperture of the adaptor. The adaptor is configured to transfer a compressive force to resiliently deflect the first lug to move the clip in an axial direction from an installed position to an uninstalled position.

The present invention is concerned with a sealing cover with quick-plug interface, comprising: cover body, above which a through hole is arranged, and in which a communication hole is arranged, and said through hole is connected with said communication hole; an annular sealing member and an annular fixing sleeve are arranged in said through hole, and said sealing member is arranged at the bottom of said through hole, and said fixing sleeve is arranged above said sealing member; said sealing member and said fixing sleeve are both clipped to an inner wall of the through hole, and said sealing member is made of a flexible material. There is no metal material in contact with the fluid inside the sealing cover with quick-plug interface provided by the present invention, so there is no hidden danger of corrosion in long-term use, and the defect that the metal material is not resistant to corrosive fluids is avoided.

The present invention is concerned with a sealing cover with quick-plug interface, comprising: cover body, above which a through hole is arranged, and in which a communication hole is arranged, and said through hole is connected with said communication hole; an annular sealing member and an annular fixing sleeve are arranged in said through hole, and said sealing member is arranged at the bottom of said through hole, and said fixing sleeve is arranged above said sealing member; said sealing member and said fixing sleeve are both clipped to an inner wall of the through hole, and said sealing member is made of a flexible material. There is no metal material in contact with the fluid inside the sealing cover with quick-plug interface provided by the present invention, so there is no hidden danger of corrosion in long-term use, and the defect that the metal material is not resistant to corrosive fluids is avoided.

This disclosure relates to an in-line quick connector. A female connector body is arranged to receive a male connector body in an interior cavity. The male connector body includes a bifurcated tubular member that includes resilient latching arms co-operable to engage latching members located within the interior cavity of the female connector body. The male connector body and female connector body each further include a raised annular flange. Fixed key members located on the male connector body flange engage slots located on the female connector body flange.

A fluid connection assembly, including a connector body, including a first end, a second end including a radially inward extending protrusion, a first through-bore, a gland, and at least one seal arranged in the gland, and a retainer operatively arranged to be removably connected to the connector body, the retainer including a ring portion forming a third end, the third end operatively arranged to enclose the at least one seal in the gland, at least one short finger extending from the ring portion, and at least one long finger extending from the ring portion and terminating at a fourth end, wherein when the retainer is connected to the connector body the at least one long finger extends out of the connector body from the second end.