Presented are dual-passage fluid couplers with integrated fluid sensors, methods for using/making such fluid couplers, and motor vehicles equipped with such fluid couplers. A quick-connect (QC) fluid coupler includes a sensor assembly with a sensor housing containing a sensing device that monitors fluid flow, and a main connector body with opposing inlet and outlet ends having respective inlet and outlet ports. The main connector body contains a sensor chamber attaching thereto the sensor housing, and a primary fluid chamber that extends from the inlet end to the outlet end of the main connector body and fluidly connects the inlet and outlet ports. Interposed between the primary and sensor chambers is a secondary fluid chamber that is fluidly connected to the sensor chamber via a sensor port and to the primary fluid chamber via a bleed port upstream from the sensor port and a merge channel downstream from the sensor port.

A tube coupling is configured to connect and couple two tubes that are configured to cause a fluid to flow inside the two tubes. The tube coupling includes: a male connector including a first pipe configured to cause the fluid to flow inside the first pipe, and an insertion part having a protruding shape protruding in an axial direction that is an insertion direction; and a female connector including a second pipe configured to cause the fluid to flow inside the second pipe, and an insertion receiving part having a recessed shape recessed in the axial direction and coupled to the insertion part when the insertion part is inserted into the insertion receiving part. The insertion part includes a first spring, a first pressing member having a protruding shape, a first seal member having an annular shape, and a first outer peripheral member surrounding the first pressing member.

A tube coupling is configured to connect and couple two tubes that are configured to cause a fluid to flow inside the two tubes. The tube coupling includes: a male connector including a first pipe configured to cause the fluid to flow inside the first pipe, and an insertion part having a protruding shape protruding in an axial direction that is an insertion direction; and a female connector including a second pipe configured to cause the fluid to flow inside the second pipe, and an insertion receiving part having a recessed shape recessed in the axial direction and coupled to the insertion part when the insertion part is inserted into the insertion receiving part. The insertion part includes a first spring, a first pressing member having a protruding shape, a first seal member having an annular shape, and a first outer peripheral member surrounding the first pressing member.

A retainer for retaining a check valve to a valve body includes a continuous body, a first group of projections, and a second group of projections. The continuous body is configured to engage a slot of the valve body to secure the continuous body to the valve body. The continuous body is further configured to include an opening configured to receive a portion of the check valve. The first group of projections is configured to extend radially from the continuous body. The first group of projections is further configured to contact the valve body to limit rotation of the retainer relative to the valve body. The second group of projections is configured to extend axially from the continuous body. The second group of projections is further configured to engage at least one of the check valve and the valve body.

A quick connect/disconnect system includes a first and second connecting member and a biasing member. The first connecting member includes (i) a first body defining a first fluid channel therethrough and having a first coupling portion at a first end portion, and (ii) a first ring assembly supported by the first body and extending about the first end portion and including a first mating feature on an internal surface of the ring assembly. The second connecting member includes (i) a second end portion defining a second coupling portion with a second fluid channel and configured to couple with the first coupling portion, and (ii) a second mating feature on an external surface of the second end portion configured to rotatably engage the first mating feature. The biasing member biases the first connecting member away from the second connecting member when the first and second mating features are mated.

A quick connect/disconnect system includes a first and second connecting member and a biasing member. The first connecting member includes (i) a first body defining a first fluid channel therethrough and having a first coupling portion at a first end portion, and (ii) a first ring assembly supported by the first body and extending about the first end portion and including a first mating feature on an internal surface of the ring assembly. The second connecting member includes (i) a second end portion defining a second coupling portion with a second fluid channel and configured to couple with the first coupling portion, and (ii) a second mating feature on an external surface of the second end portion configured to rotatably engage the first mating feature. The biasing member biases the first connecting member away from the second connecting member when the first and second mating features are mated.

A tube coupling is configured to connect and couple two tubes that are configured to cause a fluid to flow inside the two tubes. The tube coupling includes: a male connector including a first pipe configured to cause the fluid to flow inside the first pipe, and an insertion part having a protruding shape protruding in an axial direction that is an insertion direction; and a female connector including a second pipe configured to cause the fluid to flow inside the second pipe, and an insertion receiving part having a recessed shape recessed in the axial direction and coupled to the insertion part when the insertion part is inserted into the insertion receiving part. The insertion part includes a first spring, a first pressing member having a protruding shape, a first seal member having an annular shape, and a first outer peripheral member surrounding the first pressing member.

A water outlet (1) or a line coupling, which has an inflow-proximal first coupling or outlet part (2) and an outflow-proximal second coupling or outlet part (3), which (2, 3) are movable between a releasing position and a use position, in which use position the coupling or outlet parts (2, 3) in each case configured so as to be sleeve-shaped are connected to one another in the flow direction and are releasably fixed to one another by a threadless quick-release coupling (4). The water outlet (1) or the line coupling, which can serve as a sanitary water outlet (1) or a sanitary line coupling, is distinguished by simple and rapid assembling and disassembling of the coupling or outlet parts (2, 3).

A water outlet (1) or a line coupling, which has an inflow-proximal first coupling or outlet part (2) and an outflow-proximal second coupling or outlet part (3), which (2, 3) are movable between a releasing position and a use position, in which use position the coupling or outlet parts (2, 3) in each case configured so as to be sleeve-shaped are connected to one another in the flow direction and are releasably fixed to one another by a threadless quick-release coupling (4). The water outlet (1) or the line coupling, which can serve as a sanitary water outlet (1) or a sanitary line coupling, is distinguished by simple and rapid assembling and disassembling of the coupling or outlet parts (2, 3).

A quick coupling set includes a socket and a mating plug. The socket has a rotation-restraining structure while the mating plug has a mating rotation-restraining structure. In the coupling of the socket and the mating plug, the rotation-restraining structure of the socket only allows the rotation-restraining structure of the mating plug to relatively rotate in a rotation direction, so as to complete the coupling of the socket and the mating plug.