Abstract: An assembly for closure of an opening into a vessel, has a valve chamber, a valve biased toward a closed position in which the valve closes the first opening, and a retainer that retains the valve in an open position. A flow of cryogen from a first opening through the valve chamber to a second opening acts to displace the retainer and allow the valve to close.

Abstract: Servo-valve that drives an actuator by using a fluid. The servo-valve includes a nozzle having a discharge edge forming an outline of a discharge port from which the fluid is discharged and a tapered inner wall growing narrower toward the discharge edge, and a receiver that is provided with a flow path into which the fluid discharged from the discharge port flows. The nozzle is displaced in a direction different from the fluid discharge direction. The flow path extension direction is inclined with respect to a direction orthogonal to an inflow surface facing the nozzle by an angle ?. A taper angle determined by the tapered inner wall is larger than twice the angle ?. With such a configuration, the component of flow force exerted from the fluid on the tapered inner wall decreases. Since the nozzle can be quickly displaced, response speed of the actuator is improved.

Abstract: A monolithic three-dimensional fluidic check device is presented. The monolithic three-dimensional fluidic check device comprises a housing surrounding a fluidic flow path and having a first opening at a first end of the housing and a second opening at a second end of the housing, and an elongated center body positioned within and extending along the fluidic flow path. The elongated center body is stationary relative to a flow of fluid.

Abstract: A system includes a safety system having one or more valves configured to block a flow of fluid from a source to a destination, a non-invasive pressure measurement system having a plurality of non-invasive pressure sensors configured to monitor a pressure of the fluid without directly contacting the fluid, and a controller configured to receive feedback from the non-invasive pressure measurement system and to adjust a position of the one or more valves of the safety system based on the feedback.

Abstract: A solenoid valve device according to an aspect of an embodiment includes a solenoid valve, a determination unit, a setting unit, and a correction setting unit. The solenoid valve is provided on a fluid channel with a fluid passing there through and adjusts a flow rate of the fluid. The determination unit determines a target degree of valve opening of the solenoid valve. The setting unit sets a driving signal for driving the solenoid valve in such a manner that a degree of valve opening of the solenoid valve is the target degree of valve opening. The correction setting unit sets a differential pressure correction signal for driving the solenoid valve in accordance with a differential pressure on the fluid channel between a front and a back of the solenoid valve.

Abstract: An actuator device including a plurality of transducer actuators, and a common pneumatic actuation mechanism for shaping the plurality of transducer actuators, wherein each actuator of the plurality of transducer actuators includes a shape memory polymer membrane, an integrated stretchable heater, and a pressure interface to the common pneumatic actuation mechanism.

Abstract: A smart water supply valve system according to an embodiment of the present invention comprises an inflow unit for being supplied with water through one or more pipes; a valve for allowing/suspending the flow of water input through the inflow unit; a first sensing unit for sensing the pressure or flow rate of water unit input through the input unit; a second sensing unit for sensing at least one of the movement, the shape, and the heat distribution of an object; a controller for controlling the amount of opening/closing of the valve or the flow rate of water on the basis of sensing outputs from the first and second sensing units; and an outflow unit for discharging water supplied from the pipe.

Abstract: A rupture disk (200) having a line of weakness (235) is disclosed. In one embodiment, a frustum-shaped rupture disk has a shear-scored line of weakness located in one or more of a central truncated portion (220), an angled frustum portion (230), a flange portion (210), and in the areas of transition between a flange portion and an angled frustum portion, and between an angled frustum portion and a central truncated portion. In another embodiment, a frustum-shaped rupture disk has an angled frustum portion, with a line of weakness in the angled frustum portion. A stiffening member may be provided to stiffen a central truncated portion of a frustum-shaped rupture disk.

Abstract: A rupture disc device and method of assembly thereof are provided. The rupture disc device has a device body formed so that there are no leakage pathways to the radially outer surface thereof. The rupture disc is welded to the device body so that the weld joint therebetween is not relied upon to provide structural support, and instead strictly acts as a seal. In one form, the weld joint is formed with the weld beam directed axially transverse to thickness of the rupture disc to minimize unwanted variances in the rupture disc burst pressure that otherwise may be created due to the heat generated during weld joint formation.

Abstract: A pressure-limiting valve with feed function includes a valve housing (20) having a working connection (A) and a tank connection (T). A spring-loaded pressure-limiting valve piston (22) is mounted and longitudinally movable in the valve housing (20). A spring-loaded non-return valve piston (56) for the implementation of the feed function is designed as a hollow piston and is mounted to be longitudinally movable in the valve housing (20).

Abstract: High-pressure cryogenic fluid conduits that deliver high-pressure cryogenic fluids from a first point to a second point. This high-pressure fluid conduit has a safety feature that is activated when the high-pressure cryogenic fluid conduit fails due to exposure to a predetermined force. The safety feature is activated by the fracture of an annular ring that is positioned at either end of the high-pressure fluid conduit and is calibrated to fracture when exposed to the predetermined force. Fracture of the annular ring closes valves at each end of the high-pressure fluid conduit, thereby stopping the flow of high-pressure fluid from the high-pressure fluid source as well as the escape of high-pressure fluid from the high-pressure fluid container.

Abstract: A fluid-conduit collector (20, 20.x, 20a, 20b) spans across a plurality of collector-inlet interface structures (24, 24.1, 24.2, 24.3, 24?, 24?) and at least one fluidic diode element (26, 26.1, 26.2, 26.3, 26?, 26?). A branch inlet portion (20??, 20.1??, 20.2??, 20.3??) of at least one collector-inlet interface structure (24, 24.1, 24.2, 24.3, 24?, 24?), in fluid communication with a corresponding fluid-conduit runner portion (14, 14.x), provides for receiving fluid from a source of fluid (12). A main inlet portion (20.x?) of the collector-inlet interface structure in fluid communication with an outlet portion (20.x?) thereof defines a portion of the fluid conduit of the collector (20, 20.x, 20a, 20b). The branch inlet portion (20??, 20.1??, 20.2??, 20.3??) is in fluid communication with the outlet portion (20.x?) via a collector inlet port (56?, 106) that is at least partially bounded by a relatively-sharp-edged junction (60) with the fluid conduit of the collector (20, 20.x, 20a, 20b).

Abstract: The valve member includes a valve body and a seal. The valve body defines a first frusto-conical surface and an outside annular cavity. The seal extends within the outside annular cavity and includes a first tapered and circumferentially-extending surface adapted to sealingly engage the tapered surface of the valve seat. In another aspect, the seal includes an annular bulbous protrusion from which the first tapered and circumferentially-extending surface angularly extends, the first tapered and circumferentially-extending surface extending between the annular bulbous protrusion and the first frusto-conical surface of the valve body. In another aspect, an offset distance is defined between the first frusto-conical surface of the valve body and at least a portion of the first tapered and circumferentially-extending surface of the seal, the offset distance extending in a direction that is perpendicular to at least the first frusto-conical surface of the valve body.

Abstract: A pressure regulating system that is suited to regulate the pressure of a gas includes a regulating device suited to regulate the pressure of a first gas stream, provided with an inlet for the gas at a supply pressure and with an outlet for the gas at a regulated pressure that is lower than the supply pressure; a vortex tube suited to receive a gas stream through an inlet, separate it into a hot portion and a cold portion and deliver the hot and cold portions through corresponding outlets; a heat exchanger coupled with the vortex tube in order to heat the first gas stream before it flows into the regulating device; a recovery duct suited to collect a first portion of the first gas stream at a collection point located downstream of the heat exchanger and to convey it to the inlet of the vortex tube.

Abstract: A fluid supply assembly having a conduit through which a fluid may be supplied. A thermal shut-off may be provided to control the supply of fluid through the conduit in response to an environmental temperature condition.

Abstract: A hydraulic control system that uses system pressure information and a rescaled operator input to command valve spool area to control actuator speed. The system uses soft sealing and/or soft pressure compensation.

Abstract: A pressure relief device is disclosed. The pressure relief device may take the form of a “butterfly” vent, including paired burst panels or blow-out portions that are configured to open in a manner similar to a butterfly flapping its wings. Upon opening, the paired burst panels may contact each other, thereby absorbing kinetic energy. The burst panels may be positioned within a frame or may be formed or cut from a single sheet. A cord may be provided between the burst panels to retain the burst panels and/or ensure that the burst panels open substantially simultaneously. The pressure relief device also may include an activation mechanism to control the opening of the burst panels, one or more hinge members, and/or a braking member.

Abstract: A device is provided for controlling fluid flow over a window of a movable optical instrument housing. The device includes a generally annular body having an inner peripheral edge configured to correspond to a peripheral edge of the window of the housing and an outer peripheral edge, an arcuate outer surface disposed between the inner peripheral edge and the outer peripheral edge, and a reduced width portion between the inner peripheral edge and the outer peripheral edge. The reduced width portion is configured to lower elevation torque. Other embodiments of the device and methods for controlling fluid flow are further disclosed.

Abstract: Apparatus or creating a swirling flow of fluid comprises a transmission base with an internal cavity to receive the fluid flow from outside via a side penetrable hole which the longitudinal inner surface of the transmission base will be in shape of slope of continuous line, or slope of line intervals with different degree of slope, or slope of line intervals with at least one bending angle or slope of curve either convex curve or concave curve with at least one curvature to increase or decrease acceleration of swirling flow along the longitudinal internal cavity and in the manner of a laminar swirling flow.

Abstract: A water detection and shut-off system is disclosed. The water detection system may be battery powered and include a water detector, a satellite water detector, and a water shut-off mechanism. The detectors and shut-off mechanism may be communicatively coupled via one or more communication links to a client component such as a smartphone app. Upon detecting the presence of unwanted water, the shut-off mechanism may operate an electric motor to close a water shut-off valve to prevent flooding or water damage.