A pump (10) includes: a flat plate (20); a piezoelectric element (21); a flat plate (30); a side wall (40); a support member (22); a support member (32); a shielding plate (500); a ventilation hole (23); a ventilation hole (33); a film valve (61); and a film valve (62). The film valve (61) is arranged in a region where the flat plate (20) and the shielding plate (500) face each other. The film valve (62) is arranged in a region where the flat plate (30) and the shielding plate (500) face each other. A center side of one of the film valve (61) and the film valve (62) is fixed in a state in which an outer edge side is movable, and the outer edge side of the other is fixed in a state in which the center side is movable.

A check valve assembly includes a first port fitting and a second port fitting with a base secured therebetween. The base has an annular sleeve encircling a seat, the seat having a central mounting hole and one or more flow channels passing therethrough. An umbrella valve includes a flexible sealing disk having an outer surface and an opposing inner surface, a mounting stem extending from the inner surface and projecting into the mounting hole of the base, the sealing disk being movable between a first position wherein at least a portion of the sealing disk sits on the seat so as to cover the one or more flow channels and a second position wherein the sealing disk is resiliently flexed so as to at least partially uncover the one or more flow channels. A retention plate is disposed between first port fitting and the seat of the base so that the retention plate sits against the outer surface of the sealing disk.

The fluid container has a first and second flexible membrane forming at least one chamber, a channel configured to receive pressurized inert gas, and one or more check valve assemblies disposed therebetween. The one or more check valve assemblies is formed from a continuous third flexible membrane folded at an apex, and configured to provide the flow of pressurized fluid in one direction upon inflation, from the channel to the at least one chamber, while restricting flow in the opposite direction. The one or more check valve assemblies are characterized in that they do not require pre-printing or electronic registering, thus allowing for an inflation flow rate of at least twice that of conventional inflatable packaging systems.

A fluidic valve system comprises a housing, a shell mounted to the housing, a vent for allowing fluid to enter the housing in a high pressure zone, at least one Dielectric Elastomer Actuator (DEA) flap forming a seal with the shell, wherein applying a voltage to the DEA flap causes the DEA flap to open the seal with the shell so that fluid can exit through a low pressure zone created between the shell and the DEA flap, and a power supply for supplying the voltage to the DEA flap.

A valve for controlling material flow through a catheter, comprises a first flexible member including a first moveable element, wherein, when the first moveable element is in the open position, material may flow past the first flexible member through a first lumen of the catheter and, when the first moveable element is in the closed position, flow through the first lumen is prevented and a first biasing member coupled to the first flexible member for biasing the first moveable member toward the closed position.

The invention relates to a valve (1) for mounting to a surface (2) and for use in a flow path, which flows through said surface (2), for permitting flow in said flow path in a first direction and for preventing flow in said flow path in a second direction being opposite to the first direction. The valve (1) comprises: one or more ports (21) defined by a plurality of lips (22), wherein each lip (22) is resiliently deformable from a first position, in which the lips (22) are in contact with one another in order to close the respective port (21), to a second position, in which the respective port (21) is opened in order to permit flow in the first direction, and one or more contacting structures (30) arranged to mechanically contact the surface (2), when the valve is mounted to the surface (2), such that the one or more contacting structures (30) bias the lips (22) into the first position.

A nonreturn valve (10) for a compact ventilation system (100), includes a recoil membrane (20) and a holding element (40) for holding the recoil membrane (20) and for fastening the nonreturn valve (10) at a flow duct (110) of the compact ventilation system (100). The recoil membrane (20) has at least one mechanical stabilizing section (22) for cooperating with at least one mechanical counter-stabilizing section (42) of the holding element (40) or of the flow duct (110) of the compact ventilation system (100). At least one opening section (24) is provided for the defined movement of the recoil membrane (20) during the opening of the nonreturn valve (10) and a holding section (26) is provided for holding the recoil membrane (20) at a counter-holding section (46) of the holding element (40). A compact ventilation system (100) is provided with such a nonreturn valve (10).

An embodiment includes a valve comprising: a valve channel that couples a valve input to a valve output; a one-way valve included within the channel; a filter; a first pressure relief port, wherein the first pressure relief port is configured to relieve negative pressure when pressure at the valve output is less than pressure at the valve input; a second pressure relief port, wherein the second pressure relief port is configured to relieve positive pressure when pressure at the valve output is greater than pressure at the valve input; wherein the one-way valve includes a monolithic portion that simultaneously seals the channel, the first pressure relief port, and the second pressure relief port; wherein the filter covers the first pressure relief port.

Check valve assemblies for fluid flow sets and devices are provided. The check valve assembly includes an inlet body including a fluid inlet, a first seal bead and a second seal bead, and an outlet body including a fluid outlet. A seal includes inner and outer rings, wherein, in a fully sealed position of the check valve assembly, the inner ring is configured to engage with the first seal bead and the outer ring is configured to engage with the second seal bead. Fluid flow sets and methods for manufacturing check valve assemblies are also provided.

A container closure. The closure comprises a pressure closure assembly and an outer release shell configured to be coupled thereto. The assembly comprises a relief valve and an inner shell having a base wall, a pressure relief slot, and an outer skirt extending away from the base wall and including first and second portions. The release shell includes a first portion having a base wall configured to overlap a portion of the inner shell base wall, and a tab corresponding to the slot of the inner shell. The first portion further includes an outer skirt extending away from the first portion base wall and configured to wrap around the first portion of the outer skirt. The release shell further includes a second portion having a base wall configured to overlap a portion of the inner shell base wall, and an outer skirt extending away from the second portion base wall.