A container for liquid, which discharges contents when the side surfaces thereof are pressed by the fingers. A coupling unit is assembled to the top of the container body so as to discharge the pressed contents. The coupling unit has an outlet comprising a check valve which opens/shuts by means of predetermined pressure. The coupling unit having the outlet is covered with a lid for protecting the outlet. The side surfaces of the container body have pressure adjustment surfaces that protrude inwardly. Predetermined gaps are maintained between the ends of the pressure adjustment surfaces and the side surfaces of the container body, located in front of the ends of the pressure adjustment surfaces.

A flow control device (20) and process are provided for controlling the flow of a pressurized fluid substance from a supply system (22). The device (20) includes a housing (30/40) that defines an orifice (84) for communicating between the supply system (22) that has an outlet end defining a discharge opening (57). The device 20 further includes a valve (140) having a flexible, resilient valve head (160) that has confronting, openable portions (186) movable from a closed configuration to an open configuration when the valve head (160) is subjected to a pressure differential acting across the valve head (160). The valve (140) is located across the housing outlet end discharge opening (57) so that the valve (140) and the housing (30/40) together define an expansion chamber (198) between the orifice (84) and the valve (140).

A flow control device (20) and process are provided for controlling the flow of a pressurized fluid substance from a supply system (22). The device (20) includes a housing (30/40) that defines an orifice (84) for communicating between the supply system (22) that has an outlet end defining a discharge opening (57). The device 20 further includes a valve (140) having a flexible, resilient valve head (160) that has confronting, openable portions (186) movable from a closed configuration to an open configuration when the valve head (160) is subjected to a pressure differential acting across the valve head (160). The valve (140) is located across the housing outlet end discharge opening (57) so that the valve (140) and the housing (30/40) together define an expansion chamber (198) between the orifice (84) and the valve (140).

A fluid filtration system for use in a lid of a fluid container, such as a water bottle or water jug, that is adapted to receive a quick disconnect fitting and a pressurization source. The quick disconnect fitting is connected to flexible tubing which can be used to withdraw fluid from the water bottle by using pressure as a motive force. A fluid filtration system for use in a lid of a fluid container, such as a water bottle, water jug, or barrel that comprises a lid configured to attach to a container. The filter is in fluid communication with the lid through an outlet port. An external pressure source pumps the fluid through the filter through an outlet valve on the outlet port of the lid.

A fluid containment and dispensing system includes a sealed, variable-volume containment device having a movable plunger slidably mounted within a barrel, and a sealing head having a seal insert retained thereon. A seal arrangement includes a self-resealing cross-slit opening, an internal sealing ring for engaging a corresponding coupling of a compatible device, and a raised peripheral seal ring for sealing engagement with a closure lid.