Apparatus and method of a valve assembly that may be integrated into an inflatable device. The valve assembly may include a valve that is rotatable within a housing. The valve may allow for one-way passage of air either into or out of the inflatable device depending on the configuration of the valve. The valve system may provide an easy way to both inflate and deflate an inflation device with minimal effort from a user.

An aspirator for use in an aircraft evacuation inflatable device inflation system. The aspirator includes: a barrel; a first inlet configured to receive a primary flow of pressurized gas a first pressure P1 during inflation of the aircraft evacuation inflatable device; a second inlet configured to a secondary flow in the form of atmospheric air; and a pressure release valve and interlock combination attached to the barrel. The interlock receives the primary flow and a downstream flow from the barrel, wherein the interlock causes the pressure release valve (PRV) to remain closed during an initial phase of inflation of aircraft evacuation inflatable device.

Various embodiments of the present disclosure provide a pneumatic inflator for automatically inflating inflatable articles, such as dunnage bags, to a desired pressure. Generally, once activated, the pneumatic inflator of the present disclosure inflates an inflatable article via a compressed air source until the air pressure inside the inflatable article reaches an operator-selected desired pressure. Thereafter, the pneumatic inflator automatically stops inflating the inflatable article. In various embodiments, the pneumatic inflator also includes a manual shut-off that, when activated while the pneumatic inflator is inflating the inflatable article, causes the pneumatic inflator to stop inflating the inflatable article. The pneumatic inflator of the present disclosure thus enables automatic inflation of inflatable articles to particular, operated-selected desired pressures with limited operator input.

An air bag packaging arrangement adapted to have a self-adhesive checking valve includes an air bag and an air valve which is the self-adhesive checking valve. The air bag includes first and second cell overlapped layers to form an air chamber and a valve opening. The air valve includes first and second sealing films overlapped between the first and second cell layers, and a check sealing film overlapped between proximal portions of the first and second sealing films to define an air inflating channel between the first sealing film and the check sealing film, and a backflow prevention channel between the check sealing film and the second sealing film. In case of air leakage, the air is guided to flow to the backflow prevention channel for creating a supplemental air pressure to further seal and close the air inflating channel, so as to make up a deficient sealing effect of the first and second sealing films.

A device for adjustment of pressure in tires includes a chamber with shape memory and a valve. The valve is a three-way valve with inputs interconnected with the external environment and the tire internal space, where one input is fitted with a valve, the next input is connected to one end of the chamber with shape memory, and the last input is interconnected with the closure element. The device for adjustment of pressure in tires includes the chamber with shape memory interconnected with the external environment through an input and with the tire chamber through an output and fitted with at least one valve. The length of the chamber in the direction of tire rotation equals 0.001 to 0.5 of the tire perimeter, where the volume of the chamber before deformation to volume of the chamber during deformation ratio is the same or higher then the desired tire pressure to pressure of the external environment ratio.

An assembly for a central tire inflation system includes a first housing having a first end and a hose member provided in the first end. A valve assembly is in fluid communication with the hose member via the first housing. The valve assembly includes a second housing and a valve positioned within the second housing. The second housing includes a base portion which comprises a lower wall portion. The valve is biased towards the lower wall portion by a biasing member to open the valve assembly.

A device for adjustment of pressure in tires includes a chamber with shape memory and a valve. The valve is a three-way valve with inputs interconnected with the external environment and the tire internal space, where one input is fitted with a valve, the next input is connected to one end of the chamber with shape memory, and the last input is interconnected with the closure element. The device for adjustment of pressure in tires includes the chamber with shape memory interconnected with the external environment through an input and with the tire chamber through an output and fitted with at least one valve. The length of the chamber in the direction of tire rotation equals 0.001 to 0.5 of the tire perimeter, where the volume of the chamber before deformation to volume of the chamber during deformation ratio is the same or higher then the desired tire pressure to pressure of the external environment ratio.

An air bag packaging arrangement and a self-adhesive checking valve, the air bag packaging arrangement includes an air bag and an air valve which is the self-adhesive checking valve. The air bag includes first and second cell overlapped layers to form an air chamber and a valve opening. The air valve includes first and second sealing films overlapped between the first and second cell layers, and a strengthening film provided between the first valve film and the first cell film to strengthen a joint strength between the first valve film and the first cell film, so as to prevent the first valve film from being broken, so as to further avoid an air leakage.

A device for adjustment of pressure in tires includes a chamber with shape memory and a valve. The valve is a three-way valve with inputs interconnected with the external environment and the tire internal space. One input is fitted with a valve, the next input is connected to one end of the chamber with shape memory, and the last input is interconnected with the closure element. The device includes the chamber with shape memory interconnected with the external environment through an input and with the tire chamber through an output and fitted with at least one valve. The length of the chamber in the direction of tire rotation equals 0.001 to 0.5 times the tire perimeter, where the volume of the chamber before deformation to volume of the chamber during deformation ratio is the same or higher than the desired tire pressure to pressure of the external environment ratio.

Valves and valve systems are provided that are useful for integration with inflatable indwelling medical devices to prevent over-inflation of retention balloon.