In a high pressure gas container with a container body having a fusible plug valve and a boss portion arranged at a position different from the fusible plug valve, each of the fusible plug valve and the boss portion has a higher heat conductivity than the container body, the fusible plug valve and the boss portion are connected by a heat conductor and the heat conductor is accommodated in the container body.

A high-pressure gas container (100) includes an inner layer (11) configured such that high-pressure gas is filled inside, a boss part (13-1, 13-2) provided at least at one position of the inner layer and configured to cause the gas to flow in and out, and an outer layer (12) configured to cover an outer periphery of the inner layer to reinforce the inner layer and having a higher gas barrier property than the inner layer. A gas discharge port (15-1, 15-2) is provided between the boss part and the outer layer, and a gas ventilation part (14) is formed between the inner layer and the outer layer such that the gas having permeated through the inner layer is discharged into atmosphere through the gas discharge port.

A system includes a first valve fluidly connected to a first vessel and a second valve fluidly connected to a second vessel. The first valve includes a body and a piston. The body includes first and second ports and a bore having a longitudinal axis. The first port is in communication with the bore and an interior of the first vessel. The second port is in communication with the bore, the second valve, and an atmosphere exterior to the first vessel. The piston is movable along the longitudinal axis of the bore. A first position of the piston blocks the first port; a second position of the piston allows fluid communication between the first and second ports. The first valve is configured so that fluid pressure from the second valve, communicating through the second port, urges the piston to the second position.

A system for storing a pressurized gas in a motor vehicle is provided, having a storage container and at least one thermally activatable safety valve for emptying the storage container. The safety valve activates automatically at a corresponding high temperature. The storage container has an additional activatable emptying device, which has an interface for an external energy source. The interface can be connected to the external energy source in order to empty the storage container in a targeted manner. Also provided is a method for emptying a storage container for a pressurized gas in a motor vehicle.

A thermally activatable safety valve has at least one microwave transmitter and microwave transmitter component. The microwave transmitter and/or the microwave transmitter component is designed to heat at least one thermally activatable opening element.

A safety arrangement for a DME fuel tank of a vehicle, adapted to release an excessive pressure from the fuel tank, including a spring-loaded pressure release valve adapted to open at a predefined pressure level, where the safety arrangement further includes a housing mounted on the fuel tank and having an outer opening closed by a lid, where the pressure release valve is arranged in the housing and where the housing is provided with an outlet pipe having an outlet opening, and where the lid is adapted to melt at a predefined temperature, thereby allowing gas to exit the pressure release valve through the outer opening of the housing when the pressure release valve is open and the lid has melted. A small gas leakage caused by an excessive pressure can be discharged downwards through the outlet pipe and outlet opening towards the ground, and a large gas leakage, caused by e.g. a fire, can be discharged outwards from the fuel tank, away from the fire.

The invention relates to a tank valve (4) for installation at a pressure gas tank (3), having a base body (5), including a first base body section (5.1), which in the assembled state projects into the pressure gas tank (3) and is sealingly connected with the same, and which includes a second base body section (5.2), which in the assembled state remains outside the pressure gas tank (3), further having a plurality of functional sub-groups (9, 11, 12, 13, 14, 16, 17, 22, 23, 26, 27) for refueling the pressure gas tank (3) via a refueling path, for the extraction of gas from the pressure gas tank (3) via an extraction path and for implementing safety and operating functions, at least some of the functional sub-groups (9, 11, 12, 13, 14, 16, 17, 22, 23, 26, 27) at least partially being disposed in the base body (5). The tank valve according to the present invention is characterized by the fact that in the first base body section (5.1) or on the side facing the interior of the pressure gas tank (3) functional sub-groups (13, 22, 23, 26, 27) are disposed at the first base body section (5.1).

The invention relates to a tank valve (4) for installation on a compressed gas container (3), having a base body (5), having a shared gas connection (16) for refueling/extraction, which is divided inside the base body (5) into a refueling line (24) and an extraction line (25) as part of an extraction path, and having an extraction valve (9) in the extraction line (25). The tank valve according to the invention is characterized in that a check valve (26) is arranged in the extraction path in series with the extraction valve (9), blocking the flow against the flow direction (A) when gas is extracted.

A cylinder valve for use with a cylinder containing fluid under pressure. The cylinder valve has an aluminum valve body. The valve body has a flow passage extending through the valve body for permitting fluid to flow through the body to exit the cylinder and a vent passage for permitting fluid to vent from the cylinder. Nickel plating is applied to the vent passage. A dispensing valve is positioned along the flow passage. Thermal relief material in the vent passage blocks flow through the vent passage until a predetermined venting temperature is reached when the material changes to a flowable state to unblock the vent passage and allow venting of the cylinder through the vent passage.

The invention relates to a head (2) for a tank (1) used to store pressurised gas, comprising, in an integrated manner: at least two components (13.sub.1, 13.sub.2) for treating, distributing and/or shutting off the gas; an upstream connector (20) suitable for being removably attached in a boss (4) of the tank (1); and downstream outlet pipes (21.sub.1, 21.sub.2) suitable for connecting the head (2) to any system using said gas by means of the aforementioned components (13.sub.1, 13.sub.2). According to the invention, each component (13.sub.1, 13.sub.2) comprises at least two sealing devices (14.sub.1, 14.sub.2) defining an intermediate space therebetween, and at least one pipe (12), called tapping pipe, connects each of the intermediate spaces and a common space (8) into which ail the tapping pipes (12) emerge, with an orifice (15) providing a connection between the common space (8) and a gas-detection device (16).