Abstract: A valve arrangement for a pressurized fluid source includes a valve housing comprising an inlet, an outlet, and a main fluid channel extending along a longitudinal axis of the valve housing. The valve arrangement further includes a spool and a regulating poppet valve coaxially located in the main fluid channel. The spool and a regulating poppet valve are both configured to translate along the longitudinal axis of the valve housing independent of each other. In response to the spool moving to an open position, the poppet valve regulates the flow of a pressurized fluid flowing from the inlet to the outlet of the valve housing.

Abstract: 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.

Abstract: A stretch senor assembly may comprise a stretch sensor, a first housing and a second housing. The stretch sensor may include a first mounting end, a second mounting end, and a sensing region extending between the first mounting end and the second mounting end. The first housing may define a connector opening and the first mounting end may be located in the first housing. The second housing may be located around the second mounting end.

Abstract: A solenoid valve including a non-sliding plunger assembly. The solenoid valve disclosed herein generally includes a plunger assembly that is moveably suspended within an internal chamber of a housing of the solenoid valve away from any sliding contact with adjacent surfaces. The plunger assembly may not be in sliding contact with any of the adjacent surfaces, and thus a radial gap may be defined between the plunger assembly and all non-moving, non-flexing features and surfaces of the solenoid valve. The solenoid valve may include a flexural washer that is resiliently flexible and is configured to enable selective axial movement of the plunger assembly in response to energizing the solenoid coil. In various embodiments, the flexural washer is configured to moveably suspend the plunger assembly within the internal chamber away from any sliding contact with adjacent surfaces.

Abstract: An aircraft exterior light unit may comprise a magnetically controlled fluid drain valve configured to expel liquid water from the light unit. The valve may include a permanent magnet configured to induce a magnetic flux circuit that generates a magnetic force configured to close the valve. The valve may be configured to open when the pressure inside the light unit exceeds the magnetic force. As the valve opens and expels the water, the pressure within the light unit may decrease, equalizing with that of the external environment. As the magnetic force generated by the magnet increases as the valve is open and the water expelled, the magnet may be configured to close the valve once more. As such, the magnet may be configured to control a self-acting fluid drain valve in an aircraft exterior light.

Abstract: A valve arrangement for a pressurized fluid source includes a regulating valve poppet configured to translate along a longitudinal axis of a valve housing, and a linear stepper motor configured to control a position of the regulating valve poppet. The linear stepper motor is controlled by a closed loop control system based upon temperature and pressure feedback signals to actively control the position and stroke rate of the regulating valve poppet.

Abstract: An inflation control system for an inflatable device may comprise: a compressed fluid source; a solenoid valve connected to the compressed fluid source and configured to control a flow of gas to the inflatable device; and a control circuit comprising a power source, a pressure switch, and an electrical switch, the control circuit configured to energize, via the power source, the solenoid valve in response to both the pressure switch and the electrical switch being in a closed state, the pressure switch configured to open and de-energize the solenoid valve in response to being exposed to a pressure at or exceeding a pressure threshold.

Abstract: 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.

Abstract: A valve arrangement for a pressurized fluid source includes a valve housing comprising an inlet, an outlet, and a main fluid channel extending along a longitudinal axis of the valve housing. The valve arrangement further includes a spool and a regulating poppet valve coaxially located in the main fluid channel. The spool and a regulating poppet valve are both configured to translate along the longitudinal axis of the valve housing independent of each other. In response to the spool moving to an open position, the poppet valve regulates the flow of a pressurized fluid flowing from the inlet to the outlet of the valve housing.

Abstract: An inflation valve and systems for inflating an inflatable device includes a valve. The valve includes an outer body, a command chamber within the outer body and an inlet chamber, the inlet chamber having an inlet connected to the source of inflation gas and an outlet connected to the inflatable device. The valve also includes a vent fluidly connected to the command chamber, the vent including a vent body having one or more vent holes formed therein and an elastomeric sleeve surrounding a portion of the vent body and covering the one or more vent holes.

Abstract: 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.

Abstract: 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.

Abstract: An inflation control system for an inflatable may comprise a compressed fluid source, a valve module, a temperature sensor, and a controller. The valve module is connected to the compressed fluid source and configured to control a flow of gas to the inflatable. The temperature sensor measures an ambient temperature and outputs the ambient temperature measurement. The controller is operably coupled to the valve module and configured to receive the ambient temperature measurement and determine an open-valve time based on the ambient temperature measurement, the open-valve time being a duration of time the valve module is in an open position.

Abstract: A dual solenoid valve for a compressed fluid source may comprise a bobbin and a first solenoid coil located around the bobbin. A second solenoid coil may be located radially outward of the first solenoid coil. An insulating layer may be located between the first solenoid coil and the second solenoid coil. A plunger may be biased away from the bobbin.

Abstract: A valve assembly may comprise: a housing cap; a valve housing having an inlet port, an outlet port, and a pilot pressure inlet port, the inlet port disposed axially opposite the housing cap; a poppet defining an axial surface and a radially outer surface, the poppet including a first radial groove disposed in the radially outer surface; a first dynamic radial seal disposed in the first radial groove and in intimate contact with a radially inner surface of the valve housing, the first dynamic radial seal configured to maintain unobstructed contact with the radially inner surface of the valve housing in response to the poppet translating axially from an open position to a closed position.

Abstract: A valve assembly for an inflation system that includes a pressure relief valve and a vent valve. The pressure relief valve has a pressure relief housing and a pressure relief valve poppet. The pressure relief housing defines a first pressure relief cavity that is disposed between a first end wall defining a first flow port and a first wall defining a passageway and a second pressure relief cavity disposed between the first wall and a second wall. The pressure relief valve poppet is movably disposed within the first pressure relief cavity and the second pressure relief cavity. The vent valve has a vent housing and a vent valve poppet. The vent housing defines a vent cavity that is disposed between the second wall defining a vent flow port and a second end wall. The vent valve poppet is movably disposed within the vent cavity.

Abstract: 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.

Abstract: A solenoid valve assembly with a manual override is provided that includes a solenoid valve housing that is supportive of a valve seat, a plunger-type armature valve element fluidly communicative with a fluid source and initially pressure balanced to remain in a closed position relative to the valve seat and an electromagnet configured to generate a magnetic flux to move the plunger-type armature-valve element into an open position relative to the valve seat. The solenoid valve assembly with a manual override also includes a manual actuation assembly configured to generate an applied force to move the plunger-type armature valve element into the open position relative to the valve seat.

Abstract: Disclosed is a pneumatic inflation valve assembly, having: a valve housing defining a valve cavity and including an axial proximate end and an axial distal end, the proximate end including an outlet from the valve cavity and the distal end including an inlet into the valve cavity, the proximate end includes a motion hole, the distal end includes a receiving volume; and a poppet is disposed in the valve cavity that includes an axial proximate stem extending through the motion hole, an axial distal stem is disposed in the receiving volume and is moveable within the valve cavity between an opened position and a closed position, when the poppet is at the opened position the distal stem extends further into the receiving volume than at the closed position, and the center body is axially spaced from the proximate end and the distal end of the valve housing.

Abstract: A solenoid valve including a non-sliding plunger assembly. The solenoid valve disclosed herein generally includes a plunger assembly that is moveably suspended within an internal chamber of a housing of the solenoid valve away from any sliding contact with adjacent surfaces. The plunger assembly may not be in sliding contact with any of the adjacent surfaces, and thus a radial gap may be defined between the plunger assembly and all non-moving, non-flexing features and surfaces of the solenoid valve. The solenoid valve may include a flexural washer that is resiliently flexible and is configured to enable selective axial movement of the plunger assembly in response to energizing the solenoid coil. In various embodiments, the flexural washer is configured to moveably suspend the plunger assembly within the internal chamber away from any sliding contact with adjacent surfaces.