Abstract: A technique provides a component actuation system in a space efficient form. A movable actuator member may be positioned within a corresponding housing in a manner which forms an annulus between the movable actuator member and the surrounding wall of the housing. A spring is located in the annulus and is designed such that the spring extends part way along a circumference of the actuator member to create an open annular region between circumferential ends of the spring. The open annular region provides space for a system related component without requiring additional longitudinal or radial space.

Abstract: An adhesive dispensing module includes a pneumatic actuator for actuating reciprocating movement of a piston on a dispenser valve member. The pneumatic actuator includes a valve element and a pneumatic housing with an inlet chamber, an exhaust chamber, and a piston chamber. The valve element includes a plurality of inlet passages and a plurality of exhaust passages. The valve element rotates from a first position in which the inlet passages deliver pressurized air from the inlet chamber to the piston chamber, to a second position in which the exhaust passages exhaust pressurized air from the piston chamber to the exhaust chamber. The valve element also includes a plurality of fins configured to be driven by an electromagnetic coil to move the valve element.

Abstract: A micro fluidic device includes a valve/pump-unit with reduced dead volume having a substrate. The lower surface of the substrate includes two micro channels spaced apart by a valve area of the substrate that separates the two micro channels. A flexible membrane is arranged on the lower surface of the substrate facing an actuating element located in a through going cut-out of a cover element. Movement of the actuating element towards and away from the valve area of the substrate causes a pump and/or valve action of the flexible membrane area, respectively, to cause or stop a directed fluid flow between the two micro channels through a channel formed between the valve area of the substrate and the flexible membrane.

Abstract: A microfluidic thermal bend actuated pressure pulse valve having an inlet for receiving a flow of liquid, an outlet for outputting the flow of liquid, a meniscus anchor between the inlet and the outlet such that the flow from the inlet towards the outlet stops at the meniscus anchor where the liquid forms a meniscus, a movable member for contacting the liquid, and, a thermal expansion actuator for displacing the movable member to generate a pulse in the liquid to dislodge the meniscus such that the liquid flow towards the outlet resumes.

Abstract: The invention relates to a compressed air control device (2) and to a compressed air control method for controlling respective operating states of a compressor (6) and of an air drying device (8) in a vehicle. The compressed air control device (2) has a compressor control outlet (36), by means of which the compressed air control device can be pneumatically connected to a control inlet of the compressor (6) in order to pneumatically switch the operating state of the compressor (6). The compressed air control device (2) further comprises a system pressure inlet (28), by means of which the compressed air control device can be pneumatically connected to a system pressure line (21), which conducts a system pressure produced by the compressor (6).

Abstract: A Natural Vacuum Leak Detection (NVLD) device having an articulated poppet to allow the sealing surface of the poppet portion to articulate, or wobble, on the end of a poppet pin, where the poppet pin is mounted to the end of the flange portion. The flange portion has the friction spring, and poppet spring pushing on it. The seal surface of the flange portion is able to move to evenly apply force to the lip seal, and provide a full seal. Because the seal surface of the flange portion is able to articulate, or wobble, the flange portion is able to compensate for misalignment between the poppet stem portion and lip seal.

Abstract: A fluid-operated actuating drive (1) on a valve, in particular a shut-off, safety or regulating valve, comprising a base unit (2) having control valves, two linear actuators (6, 7) which are located opposite of each other and can be actuated fluidically, and a mechanical converter (5) which is arranged between the two linear actuators and couples the gates thereof to each other, wherein the outlet of the converter is coupled to the inlet of the valve. To this end, the actuating drive is composed in a modular manner of individual components joined to form a functional unit in the form of the base unit, the two linear actuators and the mechanical converter.

Abstract: An actuator for actuating a plunger of a valve is provided. The actuator has an inlet and includes first and second hollow caps. A main actuation assembly is provided between the caps. The main actuation assembly includes a deformable diaphragm; first and second chambers, static sealing elements and a main piston movable between actuated and unactuated positions. A biasing mechanism biases the piston in the unactuated position. When pressurized gas is flown through the inlet and/or drawn from the outlet of the actuator, the first chamber expands, moving the main piston from the unactuated position to the actuated position, an actuating stem connected to the main piston thereby sliding within a channel provided in the bottom cap. Stackable actuating assemblies can also be used between the caps. Using static sealing elements advantageously avoids friction between moving parts.

Abstract: A vapor valve includes a partitioning member for partitioning a space containing gaseous vapor into two spaces, wherein a communication mouth for communicating the two spaces with each other is formed at the partitioning member; and a valve element for opening and closing the communication mouth, wherein the valve element is formed by a board for opening and closing the communication mouth in accordance with a pressure difference between the two spaces, a slanted board portion sloping with respect to a horizontal direction and having a shape of a board is formed at the partitioning member, and the communication mouth makes a hole penetrating both sides of the slanted board portion.

Abstract: A slide valve having a housing and a slide element guided within the housing, at least two hydraulic connections being present on the housing, and at least one of the hydraulic connections communicating hydraulically with at least one control port in a cylindrical guide surface that guides the slide element, the control port extending only over a limited distance in the circumferential direction of the guide surface and cooperating with a control edge of the slide element assigned thereto, the slide element having an essentially cylindrical outer contour and at least one end face, and the slide element being produced by injection molding, and at least one injection point being configured on the end face.

Abstract: An air control regulator regulates the amount of air flowing into the inlet of a combustion chamber by causing flowing air to support a disc located in the air passage against the force of gravity. Air passes around the edges of the disc and is channeled into a plurality of airflows by ovoid depressions in the inner surfaces of the regulator forming a venturi chamber. By regulating the airflow into the combustion chamber, combustion efficiency is improved.

Abstract: A device is described for a fluid operated valve body 200 for activation of a fluid operated tool, said valve body 200 is connected to a pipe section 11 of a pipe 160 arranged in a well 120 in a formation 140, and the device is characterised in that the valve comprises a plunger piston 5 in a channel 232, which plunger piston 5 is reset from a closed to an open position to let fluid into the tool, said resetting takes place with a piston 210, said piston 210 is brought to a number of stepwise forwards and backwards movements by increasing and decreasing, respectively, the fluid pressure P2, and said movements affect a slide body 14 which is moved stepwise, in one direction, to a position where it opens for balls 8 to fall out of channel 232, thereby releasing the plunger piston 5 to move and open for fluid flow P to the fluid operated tool.

Abstract: An image forming apparatus includes a recording head, a liquid tank, a first fluid flow path supplying liquid to the recording head, a second fluid flow path being in communication with the liquid tank, a pressure adjusting valve allowing fluid communication between the first and the second fluid flow paths, a cap member covering a nozzle surface of the recording head, and a suction unit being in communication with the cap member. The pressure adjusting valve includes a movable member movably disposed in the internal fluid flow path, wherein the movable member includes a sealing unit that seals the communication between the first and the second fluid flow paths when the cap member covers the nozzle surface of the recording head and a negative pressure is generated in a cap-member space formed between the cap member and the nozzle surface by driving the suction unit.

Abstract: A bi-directional pressure relief valve for a plate fin heat exchanger including an elongated heat exchanger tube having ends and a channel for the flow of a fluid from one end of the tube to the opposite end and a bi-directional reed valve positioned within the channel. The reed valve allows fluid to flow within the channel in either direction when a pressure differential across the reed valve is sufficient to urge the reed valve to an open position, thereby enabling the heat exchanger to be used independent of the direction of fluid flow through the heat exchanger.

Abstract: The invention relates to a valve arrangement for actuating a load (2), having an infinitely variable directional control valve (3) acting as inlet throttle via which a pump connection (P) can be connected to load connections (A, B). The load (2) is connected via working lines (4, 5) to the directional control valve (3) and a discharge volumetric flow (6) of a pressure medium (7) from the load (2) can be adjusted via a throttle device (8) on the basis of a load signal (LS) of the load (2). The throttle device (8) can be adjusted by a dynamic pressure (p?) derived from the load signal (LS). The valve arrangement is characterised in that the throttle device (8) is actuated via a hydraulic circuit (17), which detects the magnitude and direction of a pressure medium flow (7) to the load (2).

Abstract: A valve assembly for a fluid system is provided. The valve assembly includes a damping component to reduce undesired pressure fluctuations within the system. The valve assembly includes a valve guide member and a valve member at least partially situated around the valve guide member. The valve member may be slidable relative to the valve guide member. The valve member is configured to move between a first valve member position that substantially permits fluid flow from the fluid system through the valve assembly, and a second valve member position that substantially prevents fluid flow from the fluid system through the valve assembly. A metering hole is formed on the valve member and adapted to dampen the motion of the valve member from the first valve member position to the second valve member position.

Abstract: A shutoff fitting as protection device for blocking a fluid flow through a conduit includes a pneumatic adjustment device, and a hybrid gas generator operably connected to the adjustment device. The hybrid gas generator has a reaction chamber with a gas generator and a pressure gas chamber containing compressed gas and arranged adjacent to the reaction chamber. An inlet diaphragm separates the reaction chamber from the pressure gas chamber and is can be penetrated, when the gas generator is activated, so that a passage is established from the reaction chamber to the pressure gas chamber. An outlet diaphragm closes the pressure gas chamber and is rendered ineffective through destruction when the gas generator is activated to enable compressed gas to flow into the adjustment device.

Abstract: A valve device includes an oil path that is formed such that a hydraulic fluid flows therethrough, a ball valve that opens and closes the oil path, and a contraction-type PVC gel actuator including a plurality of planar cathode plates, a plurality of mesh-like anode plates, and PVC gel layers. The cathode plates and the anode plates are alternately stacked one on top of the other with the PVC gel layers sandwiched therebetween. With expansion or contraction deformation of the contraction-type PVC gel actuator, the ball valve is driven so as to close or open the oil path. The cathode plates and the anode plates included in the contraction-type PVC gel actuator are interconnected using the belt-like wiring portions. Thus, an integrated unit of the plurality of cathode plates and an integrated unit of the plurality of anode plates are formed.

Abstract: A pneumatically actuated valve includes a valve body, a pneumatic actuator, and a pitot tube. The valve body includes a valve disc positioned in a valve housing that defines a flow passage with a flow passage diameter. The pneumatic actuator rotates the valve disc in the valve housing. The pitot tube is connected to the pneumatic actuator and has a tip extending into the flow passage. The tip is spaced apart from the valve housing by at least 1/20 of the flow passage diameter. The tip is substantially free of downstream obstructions for a distance equal to at least ½ of the flow passage diameter when the valve is in an open position.

Abstract: A control arrangement for use in a hydraulic control system including a control valve having at least two movable elements, such as spools or poppets, that is adapted to control a main flow through the control valve. The control arrangement further includes a control unit. In an embodiment the control arrangement is adapted to control the operation of the control valve in accordance with a first control scheme, monitor an operating parameter of the control system, and control the operation of the control valve in accordance with a second control scheme in the event that the value of the operating parameter falls outside of a predetermined range.

Abstract: A liquid dispensing valve (12) including a liquid inlet (90) for receiving the liquid and a liquid outlet (92) for discharging the liquid. A valve member (44) is mounted for movement relative to the liquid outlet (92) between open and closed positions. A liquid passage (96) communicates between the liquid inlet (90) and the liquid outlet (92). An air inlet (114) is provided for receiving air from a source of pressurized air. An air passageway (120 and/or 128) is coupled with the air inlet (114). A pneumatic actuator (40, 110, 112) communicates with the air passageway (120 and/or 128) for moving the valve member (44) at least to the open position. An electrically operated air supply device (70) interacts with the air passageway (120 and/or 128) so as to control the flow of pressurized air to the pneumatic actuator (40, 110, 112).

Abstract: A valve for controlling the level of liquid within a chamber (10) is disclosed. The valve comprises a liquid inlet (30) and a primary float (40) that is movable in response to a change in the level of liquid (20) within the chamber (10) between an open configuration in which liquid (20) is able to flow through the liquid inlet (30) into the chamber (10) when the liquid (20) within the chamber (10) is below a predetermined acceptable level, and a closed configuration in which liquid (20) is prevented from flowing through the liquid inlet (30) into the chamber (10) when the liquid within the chamber (10) is at or above the predetermined acceptable level.

Abstract: A gate valve useful for pumping a high-vacuum processing chamber. The valve housing includes a first port for attachment to the vacuum chamber and a second port on the opposed wall and aligned with the first port for the external mounting of a pneumatic or other actuator having a shaft supporting on its end a valve gate plate within the housing. An expandable bellows sealed between the gate plate and the actuator surrounds shaft. The actuator can press the valve plate against a valve seat around the first port to close the valve or withdraw the plate to the opposed wall to provide high pumping conductance. A third port in the housing disposed from the valve is connected to the high-vacuum pump. The gate plate may be water cooled through channels in the shaft. An auxiliary vacuum pump, such as a cryo pump, may be placed inside the valve housing.

Abstract: A pressure protection valve is provided which provides a fluid short circuit between a fluid pressure inlet of a hydraulic tool such as a hydraulic hammer and a low pressure region when the pressure at the fluid pressure inlet exceeds a first trigger pressure equal to a predetermined permissible pressure. This prevents damage to the hydraulic tool which can arise through operation at excessive fluid flow or pressure from hydraulic fluid supplied by a carrier vehicle. The pressure protection valve may maintain fluid communication between the fluid pressure inlet and the low pressure region until the pressure at the fluid pressure inlet reduces to a pressure below a predetermined second trigger pressure which is less than the first trigger pressure, to prevent further operation of the tool until the flow of fluid to the fluid pressure inlet has been stopped by an operator.

Abstract: A liquid filled pressure/vacuum valve for underground storage tanks has a body having an inlet coupled to the UST and an outlet coupled to atmosphere. The valve has a suction zone disposed in the body and fluidly coupled to the inlet. The valve has a pressure zone disposed in the body and fluidly coupled to the outlet, with the suction zone in fluid communication with the pressure zone. The valve has a separator disposed in fluid communication with the outlet and the pressure zone, and a fluid that flows between the suction zone and pressure zone. The flow of fluid is determined by an increased force due to a pressure differential between the suction zone and pressure zone.

Abstract: A flow actuated valve includes a valve body, a diverter member, an actuator member, and a check disk. The valve body defines a first upper aperture, a second upper aperture, and a lower aperture. A check disk member connects to the actuator member to control the flow of fluid depending upon the direction of the flow of the fluid through the valve. When the check disk member is closed, the diverter member engages the actuator member to allow a first fluid to flow through the first upper aperture or to allow a second fluid to flow through the second upper aperture. In operation, the fluid is selected by changing the directional flow of the fluid to close the check disk member which causes the actuator member to engage the diverter member to either allow the first fluid source or the second fluid source to flow therethrough.

Abstract: A pneumatic valve (100) including a first port (150) and a second port (155) is provided according to the invention. The pneumatic valve (100) includes a valve mechanism (101) in fluidic communication with the first port (150) and the second port (155). The valve mechanism (101) is configured to receive a pneumatic control signal via the first port (150) and advance to a next valve actuation state of a plurality of predetermined valve actuation states upon receipt of the pneumatic control signal. The plurality of predetermined valve actuation states provides a plurality of predetermined flow profiles between the first port (150) and the second port (155).

Abstract: A fluid-conveying apparatus conveys fluid using a channel for the fluid to flow. The apparatus includes a pressure-generating device for generating pressure for conveying the fluid, a plurality of processing areas for processing the fluid, a valve which is disposed between the processing areas and controls the fluid flow, and a pressure-relieving device for relieving the pressure in the channel.

Abstract: An apparatus for inserting a ground-loop for a geothermal heat-pump system comprises: a percussion mole (4); a first fluid pipe (5), connected to the mole (4), for conveying a heat-exchange fluid from the heat-pump system into the ground; and a second fluid pipe (6), connected to the mole (4), for returning the heat-exchange fluid to the heat-pump system. One of the first and second fluid pipes (5, 6) comprises an intake pipe for delivering a driving fluid to the mole (4) during insertion of the ground-loop and the other fluid pipe comprises an exhaust pipe for the driving fluid.

Abstract: A method of fabricating an elastomeric structure, comprising: forming a first elastomeric layer on top of a first micromachined mold, the first micromachined mold having a first raised protrusion which forms a first recess extending along a bottom surface of the first elastomeric layer; forming a second elastomeric layer on top of a second micromachined mold, the second micromachined mold having a second raised protrusion which forms a second recess extending along a bottom surface of the second elastomeric layer; bonding the bottom surface of the second elastomeric layer onto a top surface of the first elastomeric layer such that a control channel forms in the second recess between the first and second elastomeric layers; and positioning the first elastomeric layer on top of a planar substrate such that a flow channel forms in the first recess between the first elastomeric layer and the planar substrate.

Abstract: In one embodiment, a steam valve apparatus includes: a hydraulic cylinder including an internal space sectioned into first and second chambers by a piston operated by a hydraulic liquid; a first passage to supply the hydraulic liquid to the first chamber; a second passage connecting the first and second chambers; a third passage to drain the hydraulic liquid from the second chamber; an electromagnetic valve switched between first and second states; a first cartridge valve opening the first passage when the electromagnetic valve is in the first state and closing the first passage when the electromagnetic valve is in the second state; and a second cartridge valve closing the first passage when the electromagnetic valve is in the first state and opening the first passage when the electromagnetic valve is in the second state.

Abstract: The invention relates to a hydraulic valve device (1) including a high pressure connection (P?) and a low pressure connection (T?); at least one motor port connection (A?) that is connectable to a motor port (A) on a hydraulic motor (M), preferably a hydraulic cylinder; a flow control valve (F), which is arranged between the high pressure connection (P?) and the motor port connection (A?) and which includes a flow opening (18) that is adjustable between a fully closed position and a fully open position; and a pressure regulator (R) that is arranged between the high pressure connection (P?) and the flow regulating valve (F), wherein a regulator pressure (PR) that acts at a first connection point (3) between the pressure regulator (R) and the flow regulating valve (F) acts on the pressure regulator (R) via a first control conduit (4) to close the same.

Abstract: [Problem] To provide a regulating valve device having a valve element opened or closed by a working fluid. [Solution to Problem] A valve element 310 has a structure in which a valve head 310a and a valve body 310b are coupled by a valve stem 310c. In the valve box 305, the valve element 310 and a power transmitting member 320a are slidably housed. A first bellows 320b is fixed to the power transmitting member 320a and the valve box 305 to form a first space Us at a position on a side of the power transmitting member 320a opposite the valve element. A second bellows 320c is fixed to the power transmitting member 320a and the valve box 305 to form a second space Ls at a position on a side of the power transmitting member 320a closer to the valve element.

Abstract: Novel features enhancing the operation of a diaphragm valve include a specialized diaphragm profile for enhanced securement of the diaphragm in the valve body, and a quick-connect feature joining the diaphragm to its actuator, in which the forward end of the actuator contains a sloping surface, an expanded tip, and a shoulder, while the diaphragm contains a truncated bore with a complementary profile. The valve can be modular in construction to permit mounting of the valve to an instrument panel in close proximity to other valves or components to provide the ability to select among interconnected fluid flow paths.

Abstract: A microvalve device for controlling the supply of pressurized fluid to a load in a fluid circuit, and having multiple internal fluid conduits for providing pressure feedback.

Abstract: Embodiments of a method of operating a safety valve and a safety valve system are provided. The valve system includes a valve, an actuator, a mechanical override, and an indicator. The actuator includes a fail-safe mechanism and the indicator is configured to indicate whether the fail-safe mechanism is operable during use of at least one of the actuator and the mechanical override. In one embodiment, a method of operating the safety valve includes actuating the valve into an open position and sending a signal to indicate that the fail-safe mechanism is operable to move the valve to the closed position, while the valve is in the open position.

Abstract: In a control device for a technical processing plant, a pneumatically driven actuator having an actuator stem is provided together with a valve operated by the actuator, the valve having a valve stem. A valve element is attached to the valve stem. A stem connector connects the two stems to each other for a forced transmission of axial actuating movements and for modifying an axial distance between adjacent ends of the valve stem and the actuator stem to adjust a total axial length of the two stems. The stem connector comprises two half-shells connected to each other, and two positioning devices are provided for a friction-locking coupling of the half-shells to the respective ends. At least one of the positioning devices is designed to modify an axial attachment position of the half-shells along one of the stems.

Abstract: A gasket type orifice includes a first orifice base having a through-type passage in a central area thereof, a second orifice base having in a central area thereof a through-type passage communicating with the passage of the first orifice base, and an orifice plate having an orifice hole formed in a central area thereof, wherein the orifice plate is mounted by insertion in an airtight manner between both orifice bases, and the gasket type orifice is installed in a fluid passage, in which the outer end faces of both orifice bases respectively serve as sealing faces, and an outer diameter of the second orifice base, located on the downstream side, is larger than an outer diameter of the first orifice base located on the upstream side, and an outer peripheral edge portion of an inner end face of the second orifice base serves as another sealing face.

Abstract: In a pneumatic actuator for setting a control armature, a first working chamber and a second working chamber are pneumatically separated from each other by a moveable dividing wall to which the control armature is coupled in a force-transmitting manner. The dividing wall, in case of a pressure difference between the working chambers, is displaced in a first control direction. A positioner is adapted to output at least one pneumatic control signal to the first working chamber. The first and the second working chambers are pneumatically connected to each other via a pneumatic short-circuit duct with a balancing valve disposed in the short-circuit duct for at least one of closing or opening the short-circuit duct. The balancing valve is driveable by the positioner such that in case of a certain operating condition, the balancing valve pneumatically short-circuits the first and the second working chamber for achieving a pressure balance between the chambers.

Abstract: The invention relates to a hydraulic valve assembly having a cartridge insert valve in a bore hole designed in a valve block and connected to the flow channels arranged in the valve block comprising a valve sleeve inserted in the bore hole and a closing member guided into said sleeve, wherein the valve sleeve forms a valve seat for the closing member in the closing position thereof and the closing member can be moved by means of a connected hydraulic pre-control between the closed position thereof seated on the valve seat and separating the flow channels from one another, and an opened position pushed into the valve sleeve, and the bore hole is sealed tight by the cartridge insert valve inserted the rein via a valve cover connected to the valve block.

Abstract: A pressure actuated valve for controlling the flow of fluid through a medical device, the valve comprises a housing including a lumen extending therethrough and a flow control membrane extending across the lumen to control the flow of fluid through the lumen. The membrane includes a plurality of slits extending therethrough so that, when the membrane is acted upon by a pressure of at least a threshold magnitude, the slits open to permit flow through the lumen and, when not acted upon by a pressure of at least the predetermined magnitude, the slits are maintained closed by a biasing force applied thereto by the membrane to prevent flow through the lumen. Each of the slits extends between end portions thereof along a curve wherein a distance between a first end portion of a first one of the slits and a first end portion of a second one of the slits is a minimum distance between the first and second slits.

Abstract: Embodiments of a method of operating a safety valve and a safety valve system are provided. The valve system includes a valve, an actuator, a mechanical override, and an indicator. The actuator includes a fail-safe mechanism and the indicator is configured to indicate whether the fail-safe mechanism is operable during use of at least one of the actuator and the mechanical override. In one embodiment, a method of operating the safety valve includes actuating the valve into an open position and sending a signal to indicate that the fail-safe mechanism is operable to move the valve to the closed position, while the valve is in the open position.

Abstract: A control system for a purge valve that can be actuated by low pressure, which can be used for a low pressure or vacuum waste water system, encompassing a first valve and a second valve. The purge valve can be actuated as a function of its position, and the accumulated waste water can be drawn off via the sewage system.

Abstract: A micromechanical pressure relief valve arrangement (10) comprises a stack of wafers (13). An active pressure relief valve (20) is realized within the stack of wafers (13). A passive pressure relief valve (30) is also realized within said stack of wafers (13), arranged in parallel to the active pressure relief valve (20). A check valve (50), also realized within the stack of wafers (13), is arranged in series with both the active pressure relief valve (20) and the passive pressure relief valve (30).

Abstract: A liquid flow control device has a port or passageway through which liquid flow is to be controlled. A body of a liquid swellable material is located in the port or passageway having an upstream side and a downstream side in relation to the direction of liquid flow through the port or passageway. A layer of sealing material is provided on the upstream side of the body to prevent contact of that side of the body with the liquid when the body is swollen to close the port or passageway whilst allowing contact of the downstream side of the body when the body is in the non-swollen condition allowing liquid flow through the port or passageway.

Abstract: A smart exhaust gas flow control apparatus comprises at least a control unit, a solenoid valve, a vacuum auxiliary storage tank, a valve located on an auxiliary exhaust pipe, a sensor set and an operation interface. The control unit receives control commands from the operation interface to control opening and closing of the valve to select an exhaust gas path according to requirements to discharge exhaust gas, thus can avert traffic jam caused by too slow of vehicle speed and can adjust exhaust gas flow amount according to different road conditions.

Abstract: With the invention, a device for fluid feed for explosive forming, which has a valve and an activating mechanism to activate the valve, is to be improved, so that the device permits both good filling of a die with fluid and good sealing during the explosive forming process in a technically simple design. This task is solved by a device for fluid feed for explosive forming that has a valve and an activating mechanism to activate the valve, in which the activating mechanism is arranged separate from the valve in an inactivated valve state.

Abstract: A lower sealing valve assembly for a shaft furnace charging installation including a lower sealing valve housing with a lower outlet through which charge material can freely drop onto a distribution device, the housing has at least one upper inlet for communicating with an outlet of a hopper arranged above the housing, where each inlet has an associated valve seat that is arranged inside the lower sealing valve housing and turned towards the interior of the housing, a shutter is further operatively connected to an actuation mechanism for moving the shutter into and out of sealing contact with the valve seat, the valve actuation mechanism includes a turn-slide cylindric joint having a typically vertical joint axis for swiveling the shutter in a plane perpendicular to the joint axis inside the lower sealing valve housing and for translating the shutter up and down along the joint axis such that the cylindric joint includes a shaft that is axially fixed and rotatably in a hollow sleeve, which in turn is axially

Abstract: A siphoning operation is controlled to meet a target flow rate of liquid being siphoned into a container having a headspace to which a vacuum is induced with an ejector. The incremental mass of liquid siphoned into the container is monitored and the vacuum applied to the container is continuously adjusted. A vacuum regulator responsive to an electric current-to-pressure converter which is coupled to a control unit is provided to control the flow of pressurized fluid delivered to the ejector.

Abstract: The present invention takes the form of an apparatus or system that provides an alternate source of the pneumatic fluid to a system inside containment of a nuclear powerplant. An embodiment of the present invention may provide a nearly radiation-proof and nearly leak-proof, pneumatic fluid supply for some systems of the nuclear powerplant. These systems may include, but is not limited to, actuators, valves, and the like. An embodiment of the present invention may comprise a device that may propel an object with a sufficient force to puncture a seal of a pressure vessel. The released pneumatic fluid may be ported to an actuator, valve, or the like, for immediate operation of a system of the nuclear powerplant. Alternately, in an embodiment of the present invention, the pneumatic fluid may be used to resupply a depleted accumulator, or the like.