Abstract: A liquid storage tank has a breathing valve that vents the tank's headspace at a high-pressure value and admits an ambient gas at a low-pressure value. A controller generates a first control signal when the percentage of the catalyst gas is less than a catalyst threshold, a second control signal when the percentage of the catalyst gas exceeds the catalyst threshold, and a third control signal when the pressure in the headspace is equal to a low-pressure threshold between the breathing valve's low-pressure value and high-pressure value. The first valve is only opened to output inert gas at a discharge pressure greater than the breathing valve's high-pressure value in response to the second control signal. The second valve is only opened to output inert gas at a discharge pressure that is between the breathing valve's low-pressure value and high-pressure value in response to the third control signal.

Abstract: A valve can include a solenoid coil, a plunger having a core configured to respond to a magnetic field generated by the solenoid coil, and a valve disc. The valve disc can be positioned at a head of the core and configured to cushion impact when the valve is closed. A projection can be positioned and configured to cushion impact when the valve is opened. The valve can be used in an air bed system in fluid connection between an air pump and an inflatable air chamber of a mattress.

Abstract: The present invention relates to inflatable bodies or systems with bounding walls or bladder structures and at least one valve assembly thermally bonded thereto. More particularly, the present invention provides a valve assembly for inflatable bodies typically made from a thermoplastic rubber material or the like, which will exhibit significantly increased strength and durability during inflation and while inflated, especially at and around the interface between the air valve assembly and the bounding wall of the inflatable body because of the enhanced strength of the interface through thermal sealing.

Abstract: A valve has a valve housing with a lid, bottom, and an intermediate housing portion between the lid and bottom. The valve housing encloses a valve chamber with at least one valve opening and at least one axially movable actuator movable between a closing position to close the valve opening and an opening position to release the valve opening, one wire- or band-shaped SMA element made of a shape memory alloy to activate the actuator in the opening direction, one return element to move the actuator in the closing direction, and one printed circuit board. The SMA element is attached to the actuator at a middle section and is electrically connected at its ends to the printed circuit board to be supplied with an electrical current. A valve arrangement includes several of such valves.

Abstract: A hydraulic valve assembly includes a first spool valve and a first selector valve for actuating a first hydraulic consumer port or a second hydraulic consumer port, and a second spool valve and a second selector valve for actuating a third hydraulic consumer port or a fourth hydraulic consumer port. A shut-off valve is arranged in a common pressure channel. A branch channel with first and second pressure branch channels branches off the pressure channel upstream of the shut-off valve. The first selector valve connects the first pressure branch channel to a first connection line in a first switching position and connects the second pressure branch channel to a second connection line in a second switching position. The second selector valve, in a first switching position, connects the first connection line to the control channel and, in a second switching position, connects the second connection line to the control channel.

Abstract: A pneumatic solenoid valve, comprising an electromagnetic actuator and an air chamber with multiple air connections configured to be connected with the interposition of the air chamber via multiple switching positions of the magnetic actuator is disclosed. The actuator is configured to assume three different switching positions by energizing the actuator in a unipolar manner with three different current intensities and to move first and second sealing element via an actuation mechanism when switching between the switching positions. In a first position, a first sealing element closes a first air connection, and a second sealing element releases a second air connection. In a second switching position, the first sealing element closes the first air connection, and the second sealing element closes the second air connection. In a third switching position, the first sealing element releases the first air connection, and the second sealing element closes the second air connection.

Abstract: A method and apparatus are presented. An active flow control system comprises a flow control valve, a manifold, and a temperature control system. The flow control valve is configured to control a flow of air into the manifold. The manifold is operatively connected to a number of actuators. The temperature control system is configured to heat at least a portion of the flow of air.

Abstract: Fluid delivery systems and methods for using fluid delivery systems are rotatable around two axes. In one embodiment, the fluid delivery system has a reduced swing radius and/or a reduced clearance area needed to rotate the fluid delivery device about one of the axes. The reduced swing radius and/or reduced clearance area allow for a more compact footprint of the fluid delivery system and a larger ratio of flow rate of fluid per unit of required clearance area.

Abstract: A solenoid device including pressure altering means for altering an output pressure of the solenoid device; and an actuator for providing an actuating signal to said pressure altering means; wherein the solenoid device further includes a sensor arranged to sense a control value of the solenoid device, and a controller which receives a request and is arranged to control delivery of power to the actuator with feedback from the sensor until the control value meets the request.

Abstract: A particular arrangement of vortex generators for an airfoil is described. The vortex generators are provided in pairs, preferably on a wind turbine blade, wherein by arranging the vortex generators according to specified characteristics, a surprising improvement in blade performance is provided over the prior art systems.

Abstract: Embodiments of the disclosure generally relate to a flapper valve. The flapper valve may be used with processing chambers, such as semiconductor substrate processing chambers. In one embodiment, a flapper valve includes a housing having a first opening at a first end thereof and a second opening at a second end thereof, a first flapper pivotably disposed in the housing, and a second flapper pivotably disposed in the housing. The first and second flappers are movable to selectively open and close at least one of the first opening and the second opening.

Abstract: The invention relates to a vacuum installation for industrial application, the installation comprising a first vessel having a first gas inlet for allowing a gaseous substance into the first vessel and a first outlet for depletion of a material, a second vessel having a second inlet for aspirating a quantity of material and a second gas outlet for depletion of the gaseous substance, wherein the gaseous substance comprises a vapour generated from the material, a storage chamber for storing the quantity of material, the storage chamber having a third inlet, wherein at least the first vessel communicates with an interior of the storage chamber via the first outlet and the third inlet; and a vacuum pump located in between the first vessel and the second vessel, and operated to lower the pressure in the second vessel, thereby allowing the material to be sucked into the second vessel via the second liquid inlet to an equilibrium level between the material and the gaseous substance, the vacuum pump being further ope

Abstract: A fuel shutoff valve includes a valve, a float, and an auxiliary member. The valve is configured to open or close an air passage of a fuel tank. The float floats on fuel and moves in a valve closing direction to close the valve, or in a valve opening direction opposite to the valve closing direction to open the valve. The auxiliary member has a predetermined weight, and abuts on the float to apply a weight on the float in the valve opening direction, or separating from the float not to apply the weight on the float in the valve closing direction.

Abstract: A servovalve includes: a fluid transfer valve assembly comprising a supply port and a control port; a moveable valve spool arranged to regulate flow of fluid from the supply port to the control port in response to a control signal; and a drive assembly configured to axially move the valve spool relative to the fluid transfer assembly in response to the control signal to regulate the fluid flow. The drive assembly comprises a piezoelectric actuator configured to vary the flow of fluid to respective ends of the valve spool in response to the control signal.

Abstract: A first casing has an internal cylindrical region defined as a floating/sinking guiding region for a float valve. The wall that forms the cylindrical region includes ventilation windows. A second casing surrounds the first casing to form, about the periphery of the first casing, a ventilation passage that guides fuel vapor in a fuel tank to the ventilation windows through a region that surrounds the first casing. In addition, the second casing surrounds the first casing from a first connection hole side to form, about the periphery of the first casing, a first ventilation passage that guides the fuel vapor in the fuel tank to the ventilation windows through the region that surrounds the first casing, and a second ventilation passage that has a larger passage cross-sectional area than the first ventilation passage. These ventilation passages stabilize floating/sinking operation of the float.

Abstract: The present invention relates to a bellows-type steam trap that comprises: a steam trap body having an inflow port formed at one side thereof, to which an inflow pipe is connected, and a discharge port formed at the other side thereof, to which a discharge pipe is connected, wherein a channel through which steam passes is formed between the inflow port and the discharge port; and a valve body which is installed in the steam trap body and can expand or contract to open or close the channel.

Abstract: An inflation system for tubeless bicycle tires may include a valve, a sealant canister, a pump head, and/or a valve core adapter. The valve, sealant canister, and pump head may collectively facilitate sealant injection into a tire by a user. The valve has an external valve seat, and includes a valve body, a valve stem extending through the length of the valve body, and a retaining mechanism for the valve stem disposed interior to the valve body. The valve stem is configured to move relative to the valve body, such that a resilient seating surface disposed at a proximal end of the valve stem is displaced relative to a valve seat formed by an exterior surface of a proximal end of the valve body.

Abstract: A pneumatic timing valve includes a spool and seal system having a first seal cartridge and a spool. The first seal cartridge has an annular body with radial ports. The spool is positioned within the first seal cartridge and movable between a first and second position. The spool has a central bore and radial ports that intersect the central bore. The radial ports of the spool complement the radial ports of the seal cartridge. The seal cartridge radial ports, the spool radial ports, and the central bore of the spool define fluid flow passages.

Abstract: A control valve for a cam phaser of an internal combustion engine, the control valve including a cylindrical housing, including a first operating connection, a second operating connection, a supply connection, and a tank drain connection configured to drain a hydraulic fluid; a control piston device, including a control piston, a piston shaft, a first check valve, and a second check valve; wherein the control piston device is arranged in the housing and movable by an actuator in an axial direction of the housing, wherein the first check valve is configured with a first piston disc and the second check valve is configured with a second piston disc and the first piston disc and the second piston disc are arranged offset from each other by a torsion spring so that a control chamber is formed between the first piston disc and the second piston disc.

Abstract: An air release and pump primer attachable to a swimming pool pump is configured to permit the manual release of air trapped inside a pool pump while permitting the pump to be manually primed with fluid.