An embodiment of a fluid valve includes a substantially flat face plate, a receptacle, a cavity, and a valve assembly. The receptacle is disposed in the face plate and has at least one protrusion each configured to engage a respective at least one groove of a valve-opening-and-fluid-dispensing device. The cavity has a front end in fluid communication with the receptacle, and has a rear end. And the valve assembly is disposed in the cavity, includes a first sealing ring, is configured to form a seal by urging the sealing ring against the rear end of the cavity in response to the valve-opening-and-fluid-dispensing device being absent from the receptacle, and is configured to allow fluid to flow into the rear end of the cavity in response to the valve-opening-and-fluid-dispensing device being disposed in the receptacle.

An embodiment of a fluid valve includes a substantially flat face plate, a receptacle, a cavity, and a valve assembly. The receptacle is disposed in the face plate and has at least one protrusion each configured to engage a respective at least one groove of a valve-opening-and-fluid-dispensing device. The cavity has a front end in fluid communication with the receptacle, and has a rear end. And the valve assembly is disposed in the cavity, includes a first sealing ring, is configured to form a seal by urging the sealing ring against the rear end of the cavity in response to the valve-opening-and-fluid-dispensing device being absent from the receptacle, and is configured to allow fluid to flow into the rear end of the cavity in response to the valve-opening-and-fluid-dispensing device being disposed in the receptacle.

A valve is mounted in a first bore in a first separable section of a transmission to block or allow fluid flow through the first bore to a second bore in a second transmission section depending on whether the first and second sections are joined together or separated. A movable portion of the valve is responsive to an actuator during relative movement of the transmission sections to shift between fluid flow open and fluid flow closed positions. The valve can include a valve housing fixed in the first bore and a carrying plunger biased to the fluid blocking position and responsive to the actuator for movement to the fluid flow open position. The valve forms a fluid flow path between the first and second bores across the gap between the facing surfaces of the joined transmission sections.

The present Freon refilling apparatus for vehicles comprises a tube fitting and a refilling duct. The tube fitting is connected to the refilling duct. The lower end of the tube fitting has a connection port to connect with gas cylinders. A pushrod is movably inserted into the tube fitting in its axial direction. Between the tube fitting and the upper end of the pushrod, there is an operating mechanism which can push the pushrod down to the lower end of the tube fitting. When the pushrod moves downwards, its lower end can make the gas cylinder connected to the tube fitting. The present Freon refilling apparatus for vehicles is applicable to different types of gas cylinders storing Freon. This provides a more convenient way to refill Freon for automobile air conditioners, with a lower cost.

The present Freon refilling apparatus for vehicles comprises a tube fitting and a refilling duct. The tube fitting is connected to the refilling duct. The lower end of the tube fitting has a connection port to connect with gas cylinders. A pushrod is movably inserted into the tube fitting in its axial direction. Between the tube fitting and the upper end of the pushrod, there is an operating mechanism which can push the pushrod down to the lower end of the tube fitting. When the pushrod moves downwards, its lower end can make the gas cylinder connected to the tube fitting. The present Freon refilling apparatus for vehicles is applicable to different types of gas cylinders storing Freon. This provides a more convenient way to refill Freon for automobile air conditioners, with a lower cost.

A fluid conduit assembly (20) comprises: first and second fluid conduits (22,24); a coupling including first and second coupling sections (26,28), each coupling section (26,28) defining a respective hollow bore along which flowable material may flow, the first coupling section (26) in fluid connection with the first fluid conduit (22), the second coupling section (28) in fluid connection with the second fluid conduit (24), the coupling sections (26,28) configured to be releasably coupled to each other; and at least one shut-off valve located within the hollow bore of at least one of the coupling sections (26,28), the or each shut-off valve including a valve member (32) movable between a valve open position and a valve closed position in which the valve member (32) shuts off the flow of a flowable material through the hollow bore, the or each valve member (32) configured to move to its valve closed position on separation of the coupling sections (26,28), wherein the first coupling section (26) is connected to the first fluid conduit (22) so that a first end (36) of the first coupling section (26) extends inside a hollow bore of the first fluid conduit (22) and a second end (38) of the first coupling section (26) is located outside the hollow bore of the first fluid conduit (22), and/or wherein the second coupling section (28) is connected to the second fluid conduit (24) so that a first end (40) of the second coupling section (28) extends inside a hollow bore of the second fluid conduit (24) and a second end (42) of the second coupling section (28) is located outside the hollow bore of the second fluid conduit (24).

A fluid conduit assembly (20) comprises: first and second fluid conduits (22,24); a coupling including first and second coupling sections (26,28), each coupling section (26,28) defining a respective hollow bore along which flowable material may flow, the first coupling section (26) in fluid connection with the first fluid conduit (22), the second coupling section (28) in fluid connection with the second fluid conduit (24), the coupling sections (26,28) configured to be releasably coupled to each other; and at least one shut-off valve located within the hollow bore of at least one of the coupling sections (26,28), the or each shut-off valve including a valve member (32) movable between a valve open position and a valve closed position in which the valve member (32) shuts off the flow of a flowable material through the hollow bore, the or each valve member (32) configured to move to its valve closed position on separation of the coupling sections (26,28), wherein the first coupling section (26) is connected to the first fluid conduit (22) so that a first end (36) of the first coupling section (26) extends inside a hollow bore of the first fluid conduit (22) and a second end (38) of the first coupling section (26) is located outside the hollow bore of the first fluid conduit (22), and/or wherein the second coupling section (28) is connected to the second fluid conduit (24) so that a first end (40) of the second coupling section (28) extends inside a hollow bore of the second fluid conduit (24) and a second end (42) of the second coupling section (28) is located outside the hollow bore of the second fluid conduit (24).

A pressure sensor includes: a pressure sensor element; a metal adapter integrally attached to the pressure sensor element and defining therein a hole through which a pressure of a fluid to be measured is introduced to the pressure sensor element; a metal fitting member provided with a housing recess receiving the adapter and connectable to a connected member; and an operation member pressing a valve provided to the connected member and defining a communicating path through which a flow path, in which the pressure of the fluid to be measured is introduced, is in communication with the hole of the adapter. The adapter and the fitting member are connected to each other by plastic deformation. The operation member is a synthetic resin member including: a contact portion brought into contact with the adapter; and a pressing portion provided on a side opposite to the contact portion to press the valve.

A probe seal for a female hydraulic coupling member has both internal and external pressure-energized seals. The outer wall or opposing ends of the seal have one or more pressure-energized seals for sealing between the body of the probe seal and the body of a coupling member in which the probe seal is installed. Annular, L-shaped, T-shaped or angled grooves in the inner wall of the seal form cavities and sealing projections that can be urged in an inward, radial direction by fluid pressure within an associated cavity to increase the sealing effectiveness between the body of the seal and the probe of a male hydraulic coupling member inserted in the receiving chamber of the female coupling member.

A probe seal for a female hydraulic coupling member has both internal and external pressure-energized seals. The outer wall or opposing ends of the seal have one or more pressure-energized seals for sealing between the body of the probe seal and the body of a coupling member in which the probe seal is installed. Annular, L-shaped, T-shaped or angled grooves in the inner wall of the seal form cavities and sealing projections that can be urged in an inward, radial direction by fluid pressure within an associated cavity to increase the sealing effectiveness between the body of the seal and the probe of a male hydraulic coupling member inserted in the receiving chamber of the female coupling member.