A valve for pressurized fluid having a body housing a fluid circuit having an upstream end configured to be placed in communication with a reserve of pressurized fluid and a downstream end configured to be placed in communication with a user of fluid, the circuit having a collection of valve shutter(s) having at least one shutoff valve shutter allowing the circuit to be closed or opened, the valve having a member for manually controlling the collection of valve shutter(s), the control member being mounted to allow the body to move between a rest position in which the collection of valve shutter(s) is in a position in which the circuit is closed and an active position in which the control member actuates the collection of valve shutter(s) into a position in which the circuit is open with a first bore section

The present disclosure relates to a field of soil-covered tank and includes a gas collecting and exhausting unit, a safety sealing unit and a closed-loop ventilation unit; a gas collecting pipe is located in a valve chamber and a channel, and the gas collecting pipe, a fan and an exhaust pipe are connected in sequence; a gas monitor of the safety sealing unit is used for monitoring concentration of combustible gases, a controller is connected to the gas monitor, a temperature sensor, a valve and a fan by conducting wires, and the controller set a warning temperature value and a warning gases concentration value and is capable of controlling actions of the valve and the fan; and the closed-loop ventilation unit is formed among a plurality of gas collecting and exhausting units.

A fuel storage system is provided for storing dimethylether (DME), a blend including DME, or other similar highly volatile fuel at a vehicle. The fuel storage system including a main storage tank, an expansion tank, a fuel filling receptacle configured to receive a fuel filling nozzle of a filling station, and a valve arrangement having at least a normal operating setting and a fuel filling setting. The valve arrangement in the normal operating setting provides a fuel passage between the main storage tank and the expansion tank, and the valve arrangement in the fuel filling setting both provides a fuel passage between the fuel filling receptacle and the main storage tank and prevents fuel flow between the main storage tank and the expansion tank. The fuel storage system is configured to mechanically prevent disconnection of the fuel filling nozzle from the fuel filling receptacle unless the valve arrangement is in the normal operating setting. A corresponding method, as well as a further example embodiment of the fuel storage system, are also provided.

The present invention relates to devices, systems, and methods for a safety interlock for a gas cylinder. The interlock device of the present invention can prevent a gas cylinder from being removed from a gas administration device as long as gas remains in the gas cylinder.

A gas-charging head for charging a device with gas includes a body and at least one valve mounted on the body. The body includes a plurality of channels in communication with an interior space of the device operable to permit a flow of gas therethrough. At least one valve mounted on the body is in communication with a channel of the plurality of channels. The body and a portion of a channel are operable as a valve manifold for the valve. In another embodiment, a system for charging the device with gas that includes a proportional-integral-differential (PID) controller is provided. In yet another embodiment, a method of charging the device with a gas is also provided. The device may be a hard-disk drive, and the gas may be helium without limitation thereto.

A mobile compressed natural gas (CNG) vessel and unloader are used to supply CNG to a compressor during regulatory emissions testing of the compressor (e.g., U.S. EPA's Quad J testing). CNG output by the compressor is recirculated to an inlet of the unloader so that it is reused during the emissions testing. Lean CNG from the vessel may be used to power the compressor during the testing. The unloader ensures that the compressor is run at at least a predetermined load factor during the emissions testing.

A system and method for maintaining overpressure in a logging unit or other pressurized space through interruptions is disclosed. A backup air supply comprising tanks mounted to a frame is operatively connected to the ambient environment of the logging unit through a valve assembly which also connects a conventional pressure setup (e.g., pumps and filters from the external environment). The valve assembly comprises two auto valves, a shuttle valve, and a pressure sensor that allow the logging unit to switch from the conventional external air supply to the tanks when the pressure detected from the conventional air supply falls below a predetermined level. The valve assembly is independently housed and may be mounted or detached from the frame housing the backup tanks.

A system for transferring LP gas includes an inlet port configured for connection to a single connection port of a first tank. The inlet port is configured to receive liquid phase LP gas, vapor phase LP gas, or a combination of both from the first tank. An outlet port is configured for connection to a single connection port of a second tank. The outlet port is configured to deliver the liquid phase LP gas, vapor phase LP gas, or combination of both to the second tank. A pump coupled between the inlet port via a first conduit and the outlet port via a second conduit is operable to pump the liquid phase LP gas, vapor phase LP gas, or combination of both from the first tank via the inlet port to the second tank via the outlet port through the first and second conduits.

The present disclosure provides systems and methods for refilling fluid containers. A fluid container may include a bottle and a valve assembly. The valve assembly may include two valves and be configured to engage with the bottle and a filling head or dispensing head. A system is configured to provide pressurized fluid to the refillable container, monitor filling, determine when to stop filling, and determine how much fluid was provided. The valve assembly may include a float mechanism coupled to one of the valves of the valve assembly to ensure fluid flow is stopped when the fluid container is full. The fluid, which can include carbon dioxide, is stored in a storage tank. A flow system provides the fluid to a filling head, which engages with the fluid container. The flow system includes a transfer pump, valves, and sensors configured to provide the fluid to the filling head.

The invention relates to a tank for storing a cryogenic mixture of liquid and gas, comprising a first casing, a draw-off pipe for drawing off fluid, which has an upstream end connected to said first casing, a filling circuit comprising a first filling pipe with an upstream end to be connected to a fluid source and a downstream end connected to the lower portion of the first casing, said filling circuit comprising a second filling pipe connected to the fluid source and a downstream end connected to the upper portion of the first casing, wherein the upstream ends of said first and second filling pipes are designed to be connected to the same fluid source simultaneously, and a distribution valve assembly which is configured to allow distribution of the fluid in said filling pipes, wherein the tank comprises a sensor assembly which measures the pressure in the first casing, said distribution valve assembly being configured to automatically adjust the pressure in the first casing, during filling, to a predetermined pressure setpoint (Pc) by means of the automatic distribution of the flow rate of fluid from the source in the filling pipes, depending on the pressure setpoint (Pc) and the pressure measured by the sensor assembly.