An inflation fluid supply and discharge assembly includes a combined two-way inlet and outlet valve having a valve body with two separate flow paths separated for flows in opposite directions. Each flow path is associated with a valve seat with a shutter, which cooperates with the valve seat in the manner of a non-return valve. One of the flow paths, intended for the passage of an incoming flow to a collection body, can be connected to a fluid supply source, the other flow path enabling the passage of a discharge flow from the collection body. A shutter is stably stressed against the corresponding valve seat, in a position of interdiction of the discharge or outlet flow, and is moved to a position at a distance from the valve seat by control members or automatically by a predetermined overpressure condition of the fluid in the collection body.

An air valve assembly includes a housing defining an internal channel, a plunger member positioned in the internal channel and configured to slide relative to the housing, a biasing member positioned in the internal channel and configured to apply a biasing force onto the plunger member, a sealing member defining a first inflation aperture, the plunger member slidably received by the first inflation aperture, a second deflation aperture defined by the housing and in fluid communication with the internal channel, and a deflation control member slidably connected to the housing, the deflation control member configured to selectively seal the second deflation aperture.

A pressure relief valve may comprise a housing, a disk, and a seal. The disk may be configured to deflect relative to the housing. The seal may form a sealing interface with at least one of the housing or disk. The pressure relief valve may be coupled to an inflatable slide or an aspirator.

An inflation control system for an inflatable is disclosed. In various embodiments, the inflation control system includes a source of a pressurized gas; a valve module connected to the source of the pressurized gas and configured to control a flow of the pressurized gas to the inflatable; a stretch sensor configured for mounting to the inflatable and to provide a real-time stretch data of an elastic deformation of the inflatable; and a controller configured to receive the real-time stretch data and to transmit a control signal to the valve module to control the flow of the pressurized gas to the inflatable.

A relief device in air pump includes a main body defining an interior space and a discharge hole fluidly communicating with the interior space. The discharge hole is selectively closed and opened by a valve device. The valve device is movable in the discharge hole. The discharge hole includes a first air sealing structure and the valve device includes a second air sealing structure and a third air sealing structure adapted to selectively contact with the first air sealing structure to prevent air flowing outside of the main body through the discharge hole and in addition at least one pressure releasing structure, located between the second and the third air sealing structures, adapted to cooperate with the first air sealing structure to delimit a gap therebetween for air to flow outside of the main body.

A nozzle adapter for a Presta valve contains: a connection seat, at least one control element, at least one returning element, a seal cover, and a controlling means. The connection seat includes an imaginary axis line, an inlet, an outlet, an air stop ring, a conduit, an engagement position, a coupling slot, and a stopping means. A respective control element has a fixing shaft, an engaging portion, and a controlled portion. The at least one returning element is arranged on the at least one control element. The seal cover is fixed outside the coupling slot, and an airtight space is defined in the coupling slot. The controlling means mounted on a center of the connection seat opposite to the inlet and in the conduit of the airtight space to move with the controlled portion.

A valve assembly for a tire inflation/deflation system includes a body having a control port and a tire port, and a valve member for fluidly connecting or disconnecting the control port with the tire port. In one embodiment, the valve includes a fluid-operated damper having a damper chamber for controlling a timing of the valve member. A vent valve is provided for permitting excess fluid pressure to escape from the damper chamber. In another embodiment, the valve member includes a diaphragm separating first and second fluid chambers. A vent passage and at least one resilient fluid pressure-operated valve element are provided for enabling fluid to vent from the first chamber to the second chamber. Multiple-redundant valve elements may be provided to form an isolation gap that restricts contamination of the valve assembly.

The present invention relates to a valve for inflatable apparatuses. The valve comprises a housing, a sealing disc and a handle. The handle is coupled to the sealing disc, and is adapted for rotating the sealing disc within the housing.

A pressure relief valve may comprise a housing, a disk, and a seal. The disk may be configured to deflect relative to the housing. The seal may form a sealing interface with at least one of the housing or disk. The pressure relief valve may be coupled to an inflatable slide or an aspirator.

A pressure and temperature compensated valve assembly includes a flow valve allowing inflation flow from a control port to a tire port and controlling deflation flow from the tire port to the control port. A throttle valve restricts deflation flow between the tire port and the control port when deflating the tire at high flow rates or when tire pressure is high, thus enabling the flow valve to be closed. The throttle valve includes a throttle diaphragm that throttles in response to flow from the tire port and which does not restrict inflation flow from the control port. The valve assembly further includes a temperature responsive member engaging the flow valve, and which deforms in response to a change in temperature in the valve assembly, thus negating temperature effects on the flow valve, allowing the flow valve to close at a consistent force across a range of operating temperatures.