A shrouded valve assembly includes a valve with a valve pipe and a valve channel. A valve member in the valve channel can regulate flow of fluid through the valve channel. A valve shroud provides a valve shroud chamber. First and second shrouded pipe assemblies are on opposite sides of the valve, each including a pipe in fluid communication with a respective end of the valve channel, and a pipe shroud providing a pipe shroud chamber. Each pipe shroud chamber is in fluid communication with a respective end of the valve shroud chamber. The pipe assemblies are connected to the valve shroud by first and second connections and to the valve by third and fourth connections, the fourth connection more flexible than both the first connection and the second connection. Load passes between the pipe assemblies via the valve shroud rather than via the valve, protecting the valve from damage.

A tube assembly comprising first and second tubes connected by means of fittings welded to ends of the respective tubes. The fittings are placed adjacent to each other and then coupled using a clamp, thereby placing the first and second tubes in fluid communication. At least one of the fittings is an orifice fitting configured to restrict the flow of fluid. Each fitting is configured with at least one projection that assists a clamp to hold the fittings together. Preferably the projections are annular. In some embodiments, the orifice fitting comprises a cylindrical wall and a plate extending radially inward from the cylindrical wall and having a circular orifice. The orifice has a radius less than the inner radius of the tube assembly, so that flow will be restricted by the orifice.

A swivel knuckle assembly for interconnecting a motor and a supply line. The knuckle assembly may include a bearing member to reduce a coefficient of friction. A locking mechanism is disclosed to connect members of the knuckle assembly.

A tank system may be conventional and fixed, or mobile, such as a fracking fluid or other tank trailer. A drain port thereof is fitted with an adapter connecting a snorkel system to drain liquids from near the top of the liquid level in the tank. A snorkel head at the extreme distal end of a tube near the longitudinal center of the tank is suspended by a system of buoys. A flow field controller plate resists formation of vortices near the snorkel head, so it can operate as near the surface as possible, withdrawing the highest grade oil efficiently. At its exit, the proximal end of the tube drains oil through an inner conduit of an adapter at a penetration in the wall of the tank. The adapter forms an annulus around the inner conduit draining tank bottoms directly from the tank.

A magnetic quick connect for a fluid delivery system includes a male coupling member and a female coupling member. The male coupling member defines a first outer fluid communication path and includes a first magnetic material. A first inner member is disposed within the first outer fluid communication path and defines a first inner communication path. The female coupling member defines a second outer fluid communication path and includes a second magnetic material. A second inner member is disposed within the second outer fluid communication path and defines a second inner communication path. The male and female coupling members are detachably held together by an attractive force between the first and second magnetic materials such that the first and second outer communication paths are held in fluid communication, and the first and second inner communication paths are held in fluid communication.

A fuel line assembly for an aircraft comprises a ferrule assembly comprising a ferrule affixed to an isolation tube, which may be directly affixed to a fuel tube or affixed to an extension tube, which in turn, is affixed to the fuel tube. The ferrule assembly provides electrostatic discharge protection and lightning protection as the isolation tube maintains a separation distance from the ferrule and fuel tube, both of which are made from metal. The isolation tube is made from a dielectric material, but which may have conductive particles added to aid in the dissipation of an electrostatic charge. The electrical resistance through the isolation tube has a lower limit to arrest the flow of the induced lightning current through the assembly. The amount of lightning protection afforded can be configured. The ferrule assembly components may be affixed by using thermo-welding, adhesive, or mechanical pressure.

The present invention concerns a two flow, hydrocarbon production fluid flow path connecting concentric hub. The hub comprises a first and second end sections, each with a concentric port, a concentric inner flow path forming a part of an inner flow path and a side port forming a part of an outer flow path in an annulus surrounding the inner flow path. A female and a male coupling section, each with an inner cylindrical flow section form a part of the concentric inner flow path, and female and male coupling section outer parts surrounding the female and the male coupling section inner cylindrical flow section form a part of the outer flow path in the annulus surrounding the concentric inner flow path. A sealing surface is located between the male coupling section and the female coupling section. The invention also concerns use of the above concentric hub.

The present general inventive concept, in some of its many example embodiments, relates to a line, in particular for the conduction of gaseous media under high pressure, preferably in the range of 150 bar to 400 bar, very preferably in the range of 200 bar to 350 bar, in particular 200 bar to 250 bar, having at least one high-pressure line and at least one gas recirculation line, characterized in that the gas recirculation line is arranged, preferably coaxially, inside the high-pressure line and the gas recirculation line comprises a stabilization device, in particular in spiral form, preferably a steel spiral, very preferably a normal steel spiral or a stainless steel spiral.

A line coupling having a housing which has a tube connection piece and a housing head. A passage duct extends from a first opening, which is formed by the tube connection piece, to a second opening, which is formed by the housing head. A tube connection structure is arranged in the passage duct. The tube connection structure is connected in a form-fitting manner via first coupling means to a first end of an inner tube which extends out of the housing head through the second opening. The section of the passage duct between the first opening and tube connection structure and inner tube form a flow duct for fluid. A container is also disclosed having a container housing which forms a container hollow space and a container opening. The container opening is formed by an outwardly projecting connection piece, and has a line coupling.

A double skinned feed or scavenge pipe assembly comprises; an inner pipe (22) and an outer pipe (23) enclosing the inner pipe and defining an annular space (24) between the inner pipe and the outer pipe and a sleeve (28) configured to slip over the outer pipe (23). Complementary threads (29) are provided on an outer wall of the outer pipe (23) and an inner wall of the sleeve (28). A lock, for example in the form of a locking nut (31) is positioned over the outer pipe (23) when the complementary threads (29) of the outer pipe and sleeve are engaged. The configuration of the assembly is such that, in use, the sleeve (28) is slidable between a first position where the inner pipe (22) is accessible and a second position wherein the inner pipe (22) is completely enclosed.