An improved coupling includes a socket assembly having a centrally disposed main valve, a valve stem, and a head end seal on the valve stem. When the coupling is to be connected, a plug assembly is inserted into the socket assembly and the main valve is opened by engagement of the socket valve stem with a plug valve. Continued inward movement of the plug assembly moves a slide valve away from the head end seal against the influence of a biasing spring. As this is occurring, the plug valve is ope...

A connector for a collapsible container having a container outlet fitting, the connector including a container cap for mounting on a container outlet fitting, a coupling insert for attaching to the container cap, and a coupling body, with the coupling insert and coupling body having interengaging means for connecting the body to the insert and for disconnecting the body from the insert, with the coupling body having an outer end for connection to a hose line. The container cap has a flange with ...

A breakaway hose coupling for releasably joining two fuel dispensing devices in fluid communication, and for selectively disengaging such dispensing devices in response to a disengaging force in excess of a preselected value being exerted on the coupling. The coupling (10) includes a first valve assembly (12) for being secured on a first dispensing device and for selectively terminating the flow of fluid from such dispensing device when the coupling (10) is uncoupled. The coupling (10) further i...

A coaxial breakaway coupling and a coaxial hose connect a fuel dispensing pump to a coaxial fuel dispensing nozzle, and the coupling includes first and second tubular valve bodies releasably coupled together by an annular canted coil spring. Each valve body supports therein an axially movable tubular valve member for defining an inner vapor return passage and an outer fuel supply passage, and a vapor return check valve member is supported for axial movement within the vapor return passage upstre...

A quick coupling device for coaction with a check valve-equipped male device having an L-shaped passage therein with a piston-equipped spool mounted in the portion of the passage receiving the male device.

A valve assembly is provided which is in two units, each of which assumes a normally closed position when the units are separated and is opened when the units are mated. One unit includes a valve body with a transverse wall having an opening therethrough which is normally closed by a diaphragm which is provided with openings through it outside of the location where it engages the wall. The other valve unit includes a valve body having a spring-biased plunger which at its end has an integral pin ...

The coupling, preferably designed as a quick-acting coupling, has two sealing members (2, 3) in which the sealing surfaces are of a material having the same coefficient of thermal expansion, in particular a hard metal and having an exact clearance fit exactly inside each other without taper or pressure. There is thus no need for sealing rings, with the result that the coupling is maintenance and trouble-free and can be used for aggressive fluids as well as over a wide temperature range.

A fluid coupling apparatus is disclosed, as to include mating male and female members. Valve means affixed in both the male nozzle and the female receptacle close the passage through the connection apparatus until a mating engagement is established. A valve actuator apparatus is locked to prevent movement of the valves until the members are sealed together, after which, the actuator member may open and close the valve means. In the disclosed embodiment, a locking or mechanical coupling member of...

A safety system for a fluid conduit having: a hose; a first housing connected to the hose with an internal cavity having a first connection point and a first check ball opening cavity; a second housing connected to the hose with an internal cavity having a second connection point and a second check ball opening cavity; a perforated retention tube positioned longitudinally within the hose and in communication with the first connection point and the second connection point; a first check device co...

A breakaway coupling for a fuel supply hose includes a male tubular valve body interfitting with or female tubular valve body and defining a fuel supply passage, and the valve bodies enclose axially moveable spring biased valve members. The valve bodies are connected by releasable connecting means which provide for moving the valve bodies from a connected position to a disconnected position in response to a substantial axial tension force on the valve bodies. The valve bodies have cooperating pe...