A coupling for a break-away valve assembly includes a coupling and an adapter, the coupling including: a valve arranged in an annular body, the annular body having a valve seat including a first portion and a second portion, adjacent to the first portion, of greater internal diameter relative to the first portion, the valve being biased in a first direction to seal against the valve seat on disconnection of the coupling from the adapter, wherein the valve is biased in a second direction, and the valve is adapted to extend past the first portion into the second portion of the valve seat to release a volume of fluid if the pressure acting on the valve exceeds a predetermined surge pressure threshold.

A valve for an air brake system on a commercial vehicle comprises a body, an inlet port connected to the body and at least one delivery port connected to the body. The inlet port has a threaded portion distal to the body and a hex portion proximate to the body. The hex portion includes a frangible feature in substantially the mid-point of the hex portion such that the valve can easily be removed from an air brake reservoir when the valve is broken at the frangible feature.

A coupling for a break-away valve assembly includes a coupling and an adapter, the coupling including: a valve arranged in an annular body, the annular body having a valve seat including a first portion and a second portion, adjacent to the first portion, of greater internal diameter relative to the first portion, the valve being biased in a first direction to seal against the valve seat on disconnection of the coupling from the adapter, wherein the valve is biased in a second direction, and the valve is adapted to extend past the first portion into the second portion of the valve seat to release a volume of fluid if the pressure acting on the valve exceeds a predetermined surge pressure threshold.

A valve for an air brake system on a commercial vehicle comprises a body, an inlet port connected to the body and at least one delivery port connected to the body. The inlet port has a threaded portion distal to the body and a hex portion proximate to the body. The hex portion includes a frangible feature in substantially the mid-point of the hex portion such that the valve can easily be removed from an air brake reservoir when the valve is broken at the frangible feature.

The present invention relates to safety mechanisms for high-pressure fluid delivery systems. Particularly, the invention relates to a breakaway device which prevents uncontrolled whipping of the conduit ends upon a rupture. A heat dissipating coupling, permitting operation of the conduit system at desired temperatures, is also included, as is a breakaway device provided with such a heat dissipation feature.

A gas valve that includes a valve body that extends along an axis of the valve. The body has an internal valve seat. An outer surface of the body includes a break-away reduced diameter region that is located axially downstream of the seat. A valve shutter is movable along the axis within the body between a valve open position and a valve closed position. The valve shutter includes a central fluid channel extending along the axis and having a varying diameter along the axis. A sealing surface is located radially outward of the central fluid channel and engages the seat when the valve shutter is in the valve closed position. A radially-extending duct extends from a fluid inlet on an outer surface of the valve shutter to a fluid outlet to the central fluid channel. The valve shutter includes a further break-away reduced diameter region that is located axially downstream of the sealing surface.

A coupling device and method for cryogenic fluid transport features quick connection, automatic closure, and emergency separation. The device includes two insulated pipes with self-closing valves at their connection ends. A quick-connection mechanism rapidly joins the pipes, while a distinct emergency separation system, located at one pipe's connection end, allows for immediate, safe disconnection in emergencies. This system ensures a rigid link during normal operation and a split configuration upon activation, separating the connection end from the pipe without fluid spillage. The design prioritizes reliable, sealed coupling/uncoupling and minimizes heat transfer, making it suitable for applications like liquid hydrogen.

A gas valve that includes a valve body that extends along an axis of the valve. The body has an internal valve seat. An outer surface of the body includes a break-away reduced diameter region that is located axially downstream of the seat. A valve shutter is movable along the axis within the body between a valve open position and a valve closed position. The valve shutter includes a central fluid channel extending along the axis and having a varying diameter along the axis. A sealing surface is located radially outward of the central fluid channel and engages the seat when the valve shutter is in the valve closed position. A radially-extending duct extends from a fluid inlet on an outer surface of the valve shutter to a fluid outlet to the central fluid channel. The valve shutter includes a further break-away reduced diameter region that is located axially downstream of the sealing surface.