A device for connecting a hose to a water source includes a first connector having a bore between a first and second ends. A spherical plug slides within the bore and includes a plurality of runners spaced around a perimeter of the spherical plug, a gap between each adjacent runner allowing water to flow from one side of the plug to the other through the bore. An elastomeric frustoconical seal is fixed proximate the second end of the bore and adapted to occlude the seal in a disconnected position of the device. A rigid second connector has a frustoconical standoff member adapted to contact the plug through the seal from the second end of the bore of the first connector and move it away from the seal as the second connector is inserted into the first connector, the device achieving a selectable connected position.

A fluid coupling element includes a body having a rear chamber and an intermediate chamber, a main valve movable to close a main passage between the rear and intermediate chambers, a forward valve movable to close a front orifice of the inner pipe under the action of a first spring, and a safety valve movable to close a secondary passage through the main valve between the rear and intermediate chambers. During coupling with a complementary coupling element, the forward valve moves a plunger that opens the safety valve before the main valve is opened. The coupling element includes a second spring, pushing the plunger back toward a forward position in which the main valve and the safety valve are closed, and the plunger abuts against the main valve or against the safety valve.

A hydraulic line coupling, for a hydraulic brake or clutch of handlebar-operated vehicles, having a line connection piece with a hydraulic line extension and a housing with a coupling opening, in which the line connection piece for coupling the line to the housing can be disposed. The connection piece comprises a passage connected to the line. A valve device is disposed in the housing and is configured such that the valve device closes the connection for the connection piece when the connection piece is not in the coupling opening. The line coupling has a seal, with which seal the valve device closes the connection for the connection piece when the connection piece is not in the coupling opening. With the seal, the connection piece seals the passage from the environment when the connection piece is in the coupling opening.

The invention relates to a fluid coupling having coupling elements, each coupling element respectively having: a body, a main valve, movable to open and close a main passage through the body, a safety valve, movable to open and close a secondary passage through the main valve, and a plunger for moving the safety valve. To reduce leaks and reduce the pairing force, the fluid coupling is configured so that, during a pairing of the coupling elements, a sealing gasket cooperates with the body before the safety valves of the two coupling elements are moved toward their open position, and at least one of the plungers pushes its main valve back toward its open position, once the associated safety valve is in the open position.

The invention relates to a fluid coupling having coupling elements, each coupling element respectively having: a body, a main valve, movable to open and close a main passage through the body, a safety valve, movable to open and close a secondary passage through the main valve, and a plunger for moving the safety valve. To reduce leaks and reduce the pairing force, the fluid coupling is configured so that, during a pairing of the coupling elements, a sealing gasket cooperates with the body before the safety valves of the two coupling elements are moved toward their open position, and at least one of the plungers pushes its main valve back toward its open position, once the associated safety valve is in the open position.

There is provided a gas supply socket which can ensure sealing between an outer cylinder and an inner cylinder even when the inner cylinder, inclined with respect to the outer cylinder, is placed in the outer cylinder. The gas supply socket 10 includes an outer cylinder 11, an inner cylinder 12, a movable body 20 disposed within the outer cylinder 11, and a valve body 18 and a valve seat portion 19 provided within the inner cylinder 12. An intermediate cylinder 13 is provided between the outer cylinder 11 and the inner cylinder 12. When the inner cylinder 12, inclined with respect to the outer cylinder 11, is placed in the outer cylinder 11, the inner cylinder 12 and the intermediate cylinder 13 tilt with respect to the outer cylinder 11.

There is provided a gas supply socket which can ensure sealing between an outer cylinder and an inner cylinder even when the inner cylinder, inclined with respect to the outer cylinder, is placed in the outer cylinder. The gas supply socket 10 includes an outer cylinder 11, an inner cylinder 12, a movable body 20 disposed within the outer cylinder 11, and a valve body 18 and a valve seat portion 19 provided within the inner cylinder 12. An intermediate cylinder 13 is provided between the outer cylinder 11 and the inner cylinder 12. When the inner cylinder 12, inclined with respect to the outer cylinder 11, is placed in the outer cylinder 11, the inner cylinder 12 and the intermediate cylinder 13 tilt with respect to the outer cylinder 11.

The invention relates to a fluid coupling, comprising coupling elements (1, 101), respectively comprising: a body (5, 105), a main valve (20, 120), movable to open and close a main passage (30, 130) through the body, a safety valve (50, 150), movable to open and close a secondary passage (40, 140) through the main valve, and a plunger (70, 170) for moving the safety valve. To reduce leaks and reduce the pairing force, the fluid coupling is configured so that, during a pairing of the coupling elements: a sealing gasket cooperates with the body before the safety valves of the two coupling elements are moved toward their open position, and at least one of the plungers pushes its main valve back toward its open position, once the associated safety valve is in the open position.

The invention relates to a fluid coupling, comprising coupling elements (1, 101), respectively comprising: a body (5, 105), a main valve (20, 120), movable to open and close a main passage (30, 130) through the body, a safety valve (50, 150), movable to open and close a secondary passage (40, 140) through the main valve, and a plunger (70, 170) for moving the safety valve. To reduce leaks and reduce the pairing force, the fluid coupling is configured so that, during a pairing of the coupling elements: a sealing gasket cooperates with the body before the safety valves of the two coupling elements are moved toward their open position, and at least one of the plungers pushes its main valve back toward its open position, once the associated safety valve is in the open position.

A fluid coupling element includes: a body comprising a rear chamber and an intermediate chamber; a main valve movable to close a main passage between the rear and intermediate chambers; a forward valve movable to close a front orifice of the inner pipe under the action of a first spring a safety valve movable to close a secondary passage through the main valve between the rear and intermediate chambers.

During coupling with a complementary coupling element, the forward valve moves a plunger that opens the safety valve before the main valve is opened. The coupling element includes a second spring, pushing the plunger back toward a forward position in which the main valve and the safety valve are closed, and the plunger abuts forwardly against the main valve or against the safety valve.