Embodiments of a flow control apparatus of the present invention generally include a vessel equipped with a substantially vertical, bottom-feeding liquid inlet line, a vapor space pressure equalization line, and a liquid outlet, wherein the vessel contains a pair of connected, horizontally oriented, O-ring and/or piston ring equipped sealing plates that are designed to rise and fall as a pair in response to gravity provided liquid pressure in the sump of the vessel, whereby an elevation of the sealing plates provides the liquid in fluid communication with the liquid outlet via internal orifices fluidly connected to one or more fluid conduits. Embodiments of a method of using embodiments of an apparatus of the present invention to control liquid flow are also provided.

A flow arrangement for a pressure relief valve assembly can include a bypass flow path extending from a pressure source to a dome of a relief valve. The bypass flow path can include a valve that is configured to open and close the bypass flow path based on pressure at the pressure source or the dome, or a pressure difference between the pressure source and the dome.

A flow arrangement for a pressure relief valve assembly can include a bypass flow path extending from a pressure source to a dome of a relief valve. The bypass flow path can include a valve that is configured to open and close the bypass flow path based on pressure at the pressure source or the dome, or a pressure difference between the pressure source and the dome.

A valve, a multi-functional combination valve and a CFLVV valve simultaneously achieve the functions of a refueling limit valve and a rolling-over valve in a fuel tank. The valve body includes a valve core accommodating cavity, and first and second inflow passages, a first discharge port, and a second discharge port communicating therewith are provided. The valve core accommodating cavity includes two independent vertical-sliding first valve core assemblies and second valve core assemblies for opening or closing the first discharge port and the second discharge port. The pressure maintaining part is connected to the second discharge port and contains a certain opening pressure. After the first valve core assembly closes the first discharge port, and a certain pressure value has to be reached in the valve core accommodating cavity, the pressure maintaining part will open the second discharge port, and the fluid will flow out of the second discharge port.

A valve, a multi-functional combination valve and a CFLVV valve simultaneously achieve the functions of a refueling limit valve and a rolling-over valve in a fuel tank. The valve body includes a valve core accommodating cavity, and first and second inflow passages, a first discharge port, and a second discharge port communicating therewith are provided. The valve core accommodating cavity includes two independent vertical-sliding first valve core assemblies and second valve core assemblies for opening or closing the first discharge port and the second discharge port. The pressure maintaining part is connected to the second discharge port and contains a certain opening pressure. After the first valve core assembly closes the first discharge port, and a certain pressure value has to be reached in the valve core accommodating cavity, the pressure maintaining part will open the second discharge port, and the fluid will flow out of the second discharge port.

The invention is directed to a one-way valve for a flexible package which comprises a first film layer having at least one first cut line and a second film layer having at least one second cut line, wherein the lines are offset from one another. An adhesive layer is disposed between the first and second film layer, wherein the first film layer, the second film layer, and the adhesive layer define a valve area in which the first film layer and the second film layer are not permanently adhered to each other. The second cut line fluidly connects the interior of the flexible package to the valve area and the first cut line fluidly connects the valve area to the ambient atmosphere surrounding the flexible package. An adhesive pattern is disposed within the valve area and creates a gas flow channel from the second cut line toward the first cut line. An oil occupies the portions of the valve area which are not adhered via the permanent adhesive.

A pressure relief arrangement for a gas turbine engine comprises a panel and a plurality of pressure relief mechanisms provided in the panel. The mechanisms have a first configuration and a second configuration. In the first configuration the panel is sealed to prevent fluid flow through the panel in a thickness direction and in the second configuration the mechanisms are arranged so that a plurality of holes are provided in the panel so fluid can flow through the panel in a thickness direction.

A pressure relief arrangement for a gas turbine engine comprises a panel and a plurality of pressure relief mechanisms provided in the panel. The mechanisms have a first configuration and a second configuration. In the first configuration the panel is sealed to prevent fluid flow through the panel in a thickness direction and in the second configuration the mechanisms are arranged so that a plurality of holes are provided in the panel so fluid can flow through the panel in a thickness direction.

A safety valve for a housing, for releasing a housing opening of the housing if a defined burst pressure is reached or exceeded in the housing. It is provided here that in a base body of the safety valve including an elastomer, a receptacle groove that is continuous in the circumferential direction is formed for the formfitting accommodation of a retaining web of the housing. The disclosure furthermore relates to an energy accumulator for storing electric energy.

A safety valve for a housing, for releasing a housing opening of the housing if a defined burst pressure is reached or exceeded in the housing. It is provided here that in a base body of the safety valve including an elastomer, a receptacle groove that is continuous in the circumferential direction is formed for the formfitting accommodation of a retaining web of the housing. The disclosure furthermore relates to an energy accumulator for storing electric energy.