The invention relates to a device for discharging a first fluid and for returning a second fluid, comprising a main channel (13) for discharging the first fluid and a return channel (14) for returning the second fluid. According to the invention, a test channel (15) is provided which connects the main channel (13) to the return channel (14), the main channel (13) having a narrowing (16) and the test channel (15) issuing into the main channel (13) in the region of the narrowing (16). The device further has a sensor (17) which is designed to determine a pressure in the test channel (15). The invention further relates to an outflow tube, a delivery nozzle and a delivery pump having a device according to the invention. With the aid of the invention, active return of the second fluid can be shut off in a simple and safe manner.

Complementary couplers useful in providing a coupling through which liquids may be transferred from a first storage reservoir or tank to a second storage reservoir or tank, which can be an on-board fuel tank of a motorized vehicle. There is a first coupling which is configured to be in fluid communication with the interior of a receiving vessel, fuel tank, etc. and a second coupling which is intended to be in fluid communication with the contents of a storage reservoir containing a chemical, liquid fuel, etc. The disclosure also includes a process for charging a fuel reservoir on board of a motorized vehicle from a remote reservoir, wherein the vapor in the fuel reservoir is displaced by an equal volume of fuel delivered from said remote reservoir, and wherein the vapor in said fuel reservoir is simultaneously caused to be transferred to said remote reservoir, thus permitting no escape of the vapor from said fuel reservoir to the surrounding atmosphere. Through use of the present disclosure, more rapid liquid transfer through individual couplers occurs with reduced losses of liquid chemicals, fuel, etc. versus prior art couplers. A remote reservoir useful for recharging fuel to a motorized vehicle, having a two way pressure equilibrium valve is also provided.

A fueling apparatus 1 including: a fueling pipe 4 accommodated in a housing main body 2 having a fueling mechanism, one end of the fueling pipe 4 being connected to the fueling mechanism; an elbow 5 connected to another end of the fueling pipe 4; a fueling hose 10, one end of which being connected to a fueling nozzle 11 with vapor recovering function, and in which a vapor passage 10c and a fuel oil passage 10d are separately disposed from each other; and a separable joint 9 for communicating the fuel oil passage 10d of the fueling hose 10 and inside of the elbow 5 with each other, and for communicating the vapor passage 10c of the fueling hose 10 and a vapor pipe 4 connected to the vapor recovery mechanism with each other.

A loading arm that transfers flowing bulk material from a storage vessel and into a transport tank through a top hatch of the transport tank that is carried on a truck or rail car for transport includes an articulating arm having a plurality of connected hollow pipes. A hatch plate connected to the discharge of the aim and defines a top member, a bottom member and an outer edge connecting the top and bottom members. At least one of the bottom member and the outer edge of the hatch plate defines a resiliently flexible section configured to deform upon engaging with the top hatch of the transport tank.

The present invention relates to a kit of parts (1), comprising plurality of hose connection parts (2,3) selectable from, first hose connection parts (2) comprising one fluid inlet (5) and one fluid outlet (8), second hose connection parts (3) comprising two fluid inlets (7,8) and one fluid outlet (9), and third hose connection parts comprising three fluid inlets and one fluid outlet, which kit of parts (1) is suitable for assembly a hose connection (61,82,83,64) having at least a first and second fluid inlet and a fluid outlet, according to any one of three configurations. The invention also relates to a fuel dispensing unit (85) for refueling vehicles and a method for assembly a hose connection.

The invention relates to a device for discharging a first fluid and for returning a second fluid, comprising a main channel (13) for discharging the first fluid and a return channel (14) for returning the second fluid. According to the invention, a test channel (15) is provided which connects the main channel (13) to the return channel (14), the main channel (13) having a narrowing (16) and the test channel (15) issuing into the main channel (13) in the region of the narrowing (16). The device further has a sensor (17) which is designed to determine a pressure in the test channel (15). The invention further relates to an outflow tube, a delivery nozzle and a delivery pump having a device according to the invention. With the aid of the invention, active return of the second fluid can be shut off in a simple and safe manner.

A filling head, which includes: A filling head housing for conveying operating fluid in a supply sense from a supply-intake region, which is configured for introducing operating fluid into the filling head, to an outlet port, A venting structure which allows the conveying of gas in a venting sense which is opposite to the supply sense,
Where the supply-intake region exhibits a hollow plug-in connector extending along a virtual nozzle path with a plug-in orifice through which an intake space connected fluid-mechanically with the outlet port is accessible,
Where an inner nozzle wall bordering the intake space exhibits functional formations projecting into the intake space as part of the venting structure,
Where on the external side of the plug-in connectors there is provided an active formation which is configured to interact with an internal thread of a supply device for the latter's positional stabilization at the plug-in connector. The filling head provides that the active formation reaches along the nozzle path up to a main body of the filling head housing, from which the plug-in connector projects.

A filling head, which includes: A filling head housing for conveying operating fluid in a supply sense from a supply-intake region, which is configured for introducing operating fluid into the filling head, to an outlet port, A venting structure which allows the conveying of gas in a venting sense which is opposite to the supply sense,
Where the supply-intake region exhibits a hollow plug-in connector extending along a virtual nozzle path with a plug-in orifice through which an intake space connected fluid-mechanically with the outlet port is accessible,
Where an inner nozzle wall bordering the intake space exhibits functional formations projecting into the intake space as part of the venting structure,
Where on the external side of the plug-in connectors there is provided an active formation which is configured to interact with an internal thread of a supply device for the latter's positional stabilization at the plug-in connector.

The filling head provides that the active formation reaches along the nozzle path up to a main body of the filling head housing, from which the plug-in connector projects.

A custom blending hose for manifold mixing of various fuels for a fuel dispensing system, including a pair of fuel dispensing hoses, generally concentrically or coaxially arranged, for passing at least a pair of fuels into a manifold assembly, for blending and intermixing of said fuels, for further delivery through a dispensing hose assembly, to a nozzle, for refueling of a vehicle. The manifold includes a housing, incorporating internally a series of apertures, through which the fuels are passed, and blended, for delivery as a uniform fuel to a vehicle during dispensing. A vapor return line may locate through the manifold.

A device for fueling motor vehicles with a fluid used as a fuel and composed of liquefied gas, in particular liquefied natural gas, includes: at least one storage container; a cooling device; at least one conveying device for feeding the fluid from the at least one storage container to at least one fueling device for motor vehicles; and at least one line for supplying the fluid to the fueling device. The at least one line includes a media-conveying central pipeline as a medium pipe and at least one additional media-conveying pipeline that is arranged concentrically with respect to the central pipeline and defines an annular space together with the media-conveying central pipeline. The media-conveying central pipeline and the at least one annular space supply and return the fluid or a gas flow. The at least one additional media-conveying pipeline is surrounded by a jacket pipe.