Abstract: A method and arrangement for monitoring the supply of cleaning liquid from a cleaning line to a milking system, where the milking system includes at least two milking stations and milk conduits, and the cleaning line includes supply conduits connectable to the milk conduits at the milking stations and arranged to apportion cleaning liquid to the milking stations, so that cleaning liquid flows through the milking stations. The method includes measuring a value of the flow of the cleaning liquid through the respective milking stations by a respective flow sensor and transferring the values of the measured flows to a control unit. The arrangement includes a first control unit and flow sensors and a respective flow sensor is adapted to measure a value of the flows of cleaning liquid through a respective milking station, and provide the values to the control unit.

Abstract: A system and method for efficiently delivering an aqueous solution to plants includes a microporous hydrophobic tubing coated with a hydrophilic polymer that has a delivery portion positionable adjacent a root system of a plant and a lumen for channeling an aqueous solution from an inlet to the delivery portion. The tubing along the delivery portion has a porosity adapted for permitting a flow of the aqueous solution therethrough when acted upon by a surfactant root exudate generated by the roots due to water stress. A pressure regulating device is upstream of the tubing's inlet, and a reservoir adapted for holding the aqueous solution therein is situated in fluid communication with an upstream end of the pressure regulating device. Additional tubing can be provided for channeling a nutrient solution to the plant roots.

Abstract: A flow control valve is disclosed that includes a valve body member having a seating surface that is seated on a valve seated surface. Multiple inflow orifices and multiple outflow orifices may be formed on the valve seated surface or the seating surface, and may be formed so as not to overlap each other in a state in which the seating surface is seated on the valve seated surface. An inside inflow channel that is in communication with the inflow channel and the inflow orifice may be formed inside a member where the inflow orifices are formed and an inside outflow channel that is in communication with the outflow channel and the outflow orifice is formed inside a member where the outflow orifices are formed.

Abstract: An object of this invention is to provide a superior mass flow meter or the like that can flexibly cope with a change of a sample fluid such as a gas kind without requiring a special troublesome labor and that can measure a flow rate with high accuracy. The mass flow meter comprises a sensor section that detects a flow rate of a sample fluid flowing in a flow channel, a setting section that sets a flow rate characteristic function that is intrinsic to each fluid to determine a flow rate based on a flow rate detected value output by the sensor section and an instrumental error correction parameter that is independent from the flow rate characteristic function and common to multiple sample fluids to correct an instrumental error of each mass flow meter, and a flow rate calculating section that calculates a flow rate measurement value of the sample fluid by applying the flow rate characteristic function and the instrumental error correction parameter to the flow rate detected value.

Abstract: An opening-force-maximizing device of an underpressure-activated valve for a drinking container (2). The device includes a partition wall (6, 106, 206) enclosing an outlet opening (4) and being provided with a wall opening (8, 108, 208) in pressure-sealing contact with an axially movable valve sealing member (22, 122, 222) being in position of rest. It also includes a continuous membrane (12, 112, 212) being arranged to the container (2) and about a valve axis (14) through the wall opening (8, 108, 208). The membrane (12, 112, 212) has an axial extent and consists of an attachment end (12a, 112a, 212a) fixedly connected to the partition wall (6, 106, 206), and a movable maneuvering end (12b, 112b, 212b) placed at an axial distance from the attachment end (12a, 112a, 212a). The maneuvering end (12b, 112b, 212b) is arranged in a tensile-force-transmitting manner to said sealing member (22, 122, 222).

Abstract: A control system for use in conjunction with a primary power system and operable to control a pneumatically powered hand-held tool broadly comprises an air delivery assembly operable to communicate with a pressurized air source; a control assembly including an exhaust line from the primary power system and to the control assembly, a spool valve in fluid communication with the supply line and the exhaust line, and a control line in fluid communication with the spool valve and the hand-held tool; a tool assembly comprising the hand-held tool for performing delicate hand working operations; and a housing for at least partial storage of the air delivery assembly and the control assembly. The primary power system and the control system operate in conjunction with each other to both power and precisely control a pneumatically powered hand-held tool.

Abstract: The invention relates to a valve combination for regulating the rate of flow or the differential pressure in liquid-conveying heating and cooling systems, consisting of a housing (2) provided with a feed pipe (10), a discharge pipe (11) and a connection pipes (6) arranged between them and a regulator (3) which is arranged axially in the connection pipe (6), wherein the regulator (3) keeps the differential pressure constant at a preset value by means of a first flow regulator (4) also arranged axially in the connection pipe (6) and can be adjusted by an actuating part (8) which projects from the housing (2) and acts on a second seat (24), and by means of a presettable second flow regulator (5) which is arranged axially or coaxially thereto, wherein the flow cross section (9) is adjustable, which is characterized in that, when an actuator (29) that acts on the actuating part (8) is installed, the flow cross section (9) is adjustable by means of a handle (7) not covered by the actuator and that, when the actuato

Abstract: A heat pump type hot water supply device is provided with a heat source side heat pump unit having a heat radiating heat exchanger that condenses refrigerant to radiate heat from the refrigerant. The hot water supply device is provided with a water tank that stores water, a water supply pipe that supplies water to the water tank from the outside, a water circulation pipe that is extended in a bypassing manner and circulates the water in the water tank from a bottom section to an upper section, a heat absorbing heat exchanger that is arranged on the water circulation pipe and connected to the heat radiating heat exchanger of the heat source side heat pump unit so as to absorb heat, and a hot water supply unit that comprises a hot water supply pipe that supplies warm water in the upper section of the water tank to the outside. The water supply pipe is branched into a plurality of water supply paths including a first water supply path and a second water supply path.

Abstract: A method for sensor operating-state determination of a valve arrangement to control a process medium flow through a pipeline having a valve element, arranged such that it can move axially within a valve housing via a pneumatic actuating drive by application of control pressure, with the control pressure being measured and evaluated in order to determine the sliding friction during the movement. The valve element can be moved at a constant speed over at least a subarea of the travel movement, the value of which speed is measured via a position sensor system for signal processing, with the currently applied control pressure being measured at approximately the same time for signal processing via a pressure sensor system. The current sliding friction of the valve element can be determined as a measure of wear state from both measured values, by an electronic evaluation unit, based on a proportional drive force expressed by the control pressure which occurs when the valve element is traveling at a constant speed.

Abstract: The Flow Controlled Y Connector is a device used to control the flow of a mixture of air, water, and debris that occurs as a result of a vacuum that is created by carpet cleaning equipment. This device is effectively a piping and valve system that opens and closes based on the flow rate of the matter passing through the system.

Abstract: In an oil pressure control device equipped with a plurality of solenoid valves, and foreign matter discharge means, the foreign matter discharge means carries out the foreign matter discharge treatment for a treatment period composed of a first period T1 in which a current smaller than a predetermined value is supplied to one of the solenoid valves and a second period T2 in which a current equal to or larger than the predetermined value is supplied to the one of the solenoid valves, and the foreign matter discharge means makes timings for varying the current values different from one another so as to start supplying a current equal to or larger than the predetermined current value to another at the beginning of the first period T1, and start supplying a current smaller than the predetermined value to the another one at the beginning of the second period T2.

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 while 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 shutoff device is implemented as a ball cock for insertion into a line for media, and has a housing insertable into the course of the line, a shutoff ball rotatably disposed in the housing, and a pivot drive for the shutoff ball. The pivot drive is removably connected to the housing. The shutoff ball has a passage in an area facing toward the pivot drive, and a chamber extends through the passage from the pivot drive into the interior of the shutoff ball. A sensor embedded in the chamber.

Abstract: It is possible to respecify the product (mass flow controller) corresponding to multiple types of actual process gases and multiple flow rate ranges, even after the mass flow controller has been shipped. With the mass flow rate control device in an initial state, calibration gas characteristic data is derived by measuring actual flow rate versus a flow rate setting signal using a calibration gas, and this calibration gas characteristic data is then saved to control unit. Meanwhile, actual gas characteristic data is derived by measuring actual flow rate versus a flow rate setting signal for each of a plurality of types of actual gas, and this actual gas characteristic data is then saved to a storage medium. Subsequently, prior to operating the mass flow rate control device, the actual gas characteristic data for an actual process gas is read from the storage medium via a computer, and the calibration gas characteristic data that was saved to the control unit is read out.

Abstract: A control arrangement for a gas exchange valve in a piston engine adapted between the camshaft of the engine and the valve mechanism, which control arrangement comprises a body part and a chamber arranged therein, into which chamber a connection for hydraulic medium opens and in which a piston device is arranged in force transmission connection with the camshaft and the valve mechanism. The connection for hydraulic medium opens to a space in the chamber, which space increases as the piston device moves in the opening direction of the valve, whereby hydraulic medium is arranged to flow into the space, when the valve is being opened, and out of the space, when the valve is being closed.

Abstract: In a fluid catalytic cracking process, catalyst migration through the vapor line from a reactor to a distillation column is controlled. Catalyst migration is controlled by detection, isolation, and removal of catalyst from the vapor line before entering the distillation column. Upon detection of a predetermined amount of catalyst in the vapor line, a signal is generated to close the valves in the vapor line, the catalyst feedstock line, and the regenerator/reactor line substantially simultaneously. Further, the distillation column can be isolated from the reactor for blind installation.

Abstract: A valve assembly has a valve body having an inlet section for a pressurized fluid and an outlet. A piston is movable within the valve body between an open position and a closed position blocking fluid communication. The piston has an end section, a sealing section and a middle section located between the end section and the sealing section. A cavity receives the piston within the valve body. The cavity has a superior chamber, an intermediate chamber, and an inferior chamber. A spring within the superior chamber exerts a spring force onto the piston to urge the piston towards the open position. An actuator device provides upon actuation for a first flow of fluid outside the cavity from the inlet section to the superior chamber. The first flow causes a pressure within the superior chamber to increase until it is about the same as the pressure within the container so that the spring force moves the piston to the open position.

Abstract: An example quick connect fitting assembly includes a fitting for communicating flow between at least three openings. A quick connect portion of the fitting defines one of the openings.

Abstract: A flow control system comprises a flow sensor, a valve controller, a signal processor, a control processor and an interface. The flow sensor generates a sensor signal characterizing a flow rate. The valve controller controls the flow rate as a function of a control output. The signal processor converts the sensor signal into a flow signal characterizing the flow rate as a function of time, and the control processor generates the control output as a function of a setpoint and the flow signals. The interface receives an input representative of the setpoint, transmits a flow output representative of the flow signals, and transmits a diagnostic output directly indicative of an operational condition of the flow control system.

Abstract: An underpressure-activated valve device for a drinking container (32). The device consists of an outer membrane (2) and an inner membrane (4) that are placed at an axial distance from one another, and their peripheral attachment areas are pressure-sealingly interconnected, causing a reference pressure chamber (6) having at least one vent (8) to an ambient pressure P1 to exist between the membranes (2, 4). One membrane (2, 4) is fixedly connected to a flow pipe (10), and the other membrane (4, 2) is provided with a membrane opening (12) within which the pipe (10) is movably arranged. The membrane opening (12) is associated with a primary sealing body (18) for sealing against fluid flow via the pipe (10), and with a secondary sealing body (16) for sealing between the chamber (6) and an internal pressure P3 in the container (32).

Abstract: In a hydraulic control system for an automatic transmission, a valve element of an accumulator closes communication between a pressure switch circuit and a detection circuit when a hydraulic pressure applied to the detection circuit is lower than a predetermined hydraulic pressure, and opens communication between the pressure switch circuit and the detection circuit when the applied pressure is higher than or equal to the predetermined hydraulic pressure. A switching element opens communication between one end of the pressure switch circuit and an exhaust circuit when the other end of the pressure switch circuit does not communicate with the detection circuit, and closes communication between the one end and the exhaust circuit when the other end communicates with the detection circuit.

Abstract: An apparatus for operating a device such as a self-closing internal valve is disclosed. The apparatus includes a housing assembly having an internal chamber, a fluid inlet in fluid communication with the internal chamber, and an actuator stem extending from the housing assembly. The actuator stem is moveable in response to the addition or removal of a fluid into or out of the internal chamber. To control the flow rate of a fluid into and out of the internal chamber, the apparatus includes a fluid control valve in fluid communication with the fluid inlet of the housing assembly, wherein the fluid control valve is adapted to restrict the rate of fluid flow into the internal chamber of the housing assembly.

Abstract: A work vehicle has a plurality of wheels including a first wheel and a fuel tank disposed upwardly of the first wheel. The fuel tank includes a first portion which is located higher than the highest point of the first wheel in a side view and which also is overlapped at least partially with the first wheel in a top view; a second portion disposed forwardly of the highest point of the first wheel and extending downwardly from the first portion so as to extend lower than the highest point of the first wheel, the second portion being in fluid communication with the first portion; and a third portion disposed rearwardly of the highest point of the first wheel and extending downwardly from the first portion so as to extend lower than the highest point of the first wheel, the third portion being in fluid communication with the first portion.

Abstract: A body 20 has body wall surfaces 21, 22 defining a body space inside. A core 30 is disposed within the body 20. The core 30 has a core wall surface defining a core space inside which has a bottom having an opening 33a. A valve 50 is inserted through the opening 33a of the core 30 with a clearance and can move along the core wall surface of the core 30. The valve 50 has a hole with a bottom which is comprised of holes 52a, 53a, 57a, a contact surface 58 that contacts the core wall surface of the core 30, a valve head 59 that can contact a valve seat 40, at least one first communication hole 55 that provides communication between the hole 53a and a second inflow fuel passage 30a within the core space, and at least one second communication hole 54 that provides communication between the hole 52a and the first inflow fuel passage 21a, 22a within the body space.

Abstract: A system for hydraulically managing fluid pressure between selected set points includes a pilot control system operably coupled to a main valve. The pilot control system includes at least one fluid conduit, a variable orifice assembly, and a control pilot valve apparatus. Fluid is passed through a fixed orifice and into a first chamber of the control pilot valve apparatus. Fluid is passed through the variable orifice of the variable orifice assembly and into a second chamber of the control pilot valve apparatus. The main valve is hydraulically opened or closed in response to a pressure differential between the first and second chambers of the control pilot valve apparatus so as to manage fluid pressure downstream of the main valve between the selected upper and lower set points.

Abstract: A scrubber system in semiconductor includes a local scrubber, a plurality of pipelines connecting at least a process equipment to the local scrubber, and a flow balancing piping. The flow balancing piping includes a connecting duct, a plurality of flow balancing manifolds connecting the pipelines to the connecting duct, a plurality of first flow balancing valve respectively positioned on the flow balancing manifolds, and at least a second flow balancing valve positioned on the connecting duct.

Abstract: A dual-handle control faucet that includes a pull-out head and a faucet base. The pull-out head is switchable between a first water discharge pattern and a second water discharge pattern. The pull-out head switches from the first water discharge pattern to the second water discharge pattern upon disengagement with the faucet base, which provides for hands-free switching between to two spray patterns.

Abstract: This invention concerns a valve for an underpressure-activated outflow mechanism for a drinking receptacle (2). The valve includes a valve head (34) and a valve seat (44), in which the valve seat (44) is arranged in force-transmitting connection with a membrane (1), whereas the valve head (34) is fixed to the remaining structure via at least one stay (36).

Abstract: Valve positioning systems may include one or more components and a controller. Components may include one or more electric-to-pressure output converters, relays, gas supplies, and/or actuators. A controller may adjust a position of a valve by sending a signal. The valve positioning system may individually monitor components and determine the condition of each component being individually monitored. The valve positioning system may determine if a component will fail prior to failure and/or determine if a problem will occur in a component prior to the problem occurring.

Abstract: A use condition of gas equipment is monitored. An abnormality determination unit 26 determines whether or not a use flow volume obtained by detecting a flow velocity obtained by measuring a signal transfer time in a medium using a flow velocity detection unit 17 and converting the detected flow velocity into a flow volume using a flow volume calculation unit 25. When the shutoff unit 27 shuts off a fluid path 1 when it is determined that there is abnormality, a return signal is output from a return unit 28 to a shutoff unit 27 in order to use the gas again by opening the fluid path. Simultaneously, when a return time-counting unit 29 starts the time-counting operation, and then, a predetermined time period has been elapsed, the flow volume calculation unit 25 determines whether or not a predetermined flow volume of greater flows in order to identify whether or not all of the gas plugs of the gas equipment connected to the downstream of the gas shutoff apparatus 27 are closed.

Abstract: An automate fluid flow control system includes a valve member for being sealedly disposed within a fluid chamber to seal a flow of fluid flowing from a fluid inlet to a fluid outlet, a relief valve having a fluid passage extended along the valve member for communicating the fluid chamber with the fluid outlet and including a valve stopper sitting on a top opening of the fluid passage to sealedly close the fluid passage, and a powering assembly including an actuator to move the relief valve between a closed position that the valve stopper is sealedly retained to close the fluid passage and an opened position that the actuator drives the valve stopper to unseal the fluid passage for releasing a pressure within the water chamber to allow the fluid passing to the fluid outlet.

Abstract: The invention relates to a diaphragm (1) for throttling a volume flow in an air distribution ducting system of an air-conditioning unit of a commercial aircraft. The diaphragm includes a plurality of spring-elastic elements (10) that effect a throttling of the volume flow through the diaphragm (1). The invention also relates to the use of such a diaphragm (1) for installation in an air distribution ducting system of an air-conditioning unit on board a commercial aircraft.

Abstract: An alarm is associated with a device for dispensing volatile anesthetics. The alarm and device is designed such that an alarm is triggered whenever the operating voltage is interrupted and an assembly unit that determines the dispensing of at least one anesthetic is not in a prescribed state of operation.

Abstract: A flow rate control apparatus includes a base section, wherein the base section is composed of a plurality of stacked metal plates. The flow rate control apparatus further includes a pressure control section, which regulates pressure of a pressure fluid (gas) that flows through a first passage in the base section, a pressure sensor that detects pressure of the pressure fluid flowing through a second passage, and a flow passage-switching section, including first to third orifices, for throttling the fluid pressure-regulated by the pressure control section so as to have a predetermined flow rate, and which has first to third ON/OFF valves for switching fourth to sixth passages for respectively directing the pressure fluid toward a pressure fluid output port.

Abstract: A fuel filter sealing apparatus to improve a connector for connecting a fuel input pipe and a fuel return pipe to a fuel filter in order to prevent fuel leakage during a preliminary testing stage of an engine and backflow of fuel during engine operation. An oil chamber is provided between a first piston and a second piston accommodated at an inner circumferential side of a fuel filter side connecting part. Fuel flow holes are radially formed at an external side of the oil chamber and inlets thereof are opened and closed by the first piston to allow the fuel passing through outlets thereof to flow to the fuel filter. A barrier valve is provided at one side with a valve surface for opening and closing a fuel through hole disposed between the fuel filter and the connector.

Abstract: Systems and methods are provided for detecting flow in a mass flow controller (MFC). The position of a gate in the MFC is sensed or otherwise determined to monitor flow through the MFC and to immediately or nearly immediately detect a flow failure. In one embodiment of the present invention, a novel MFC is provided. The MFC includes an orifice, a mass flow control gate, an actuator and a gate position sensor. The actuator moves the control gate to control flow through the orifice. The gate position sensor determines the gate position and/or gate movement to monitor flow and immediately or nearly immediately detect a flow failure. According to one embodiment of the present invention, the gate position sensor includes a transmitter for transmitting a signal and a receiver for receiving the signal such that the receiver provides an indication of the position of the gate based on the signal received.

Abstract: A float-responsive valve includes a valve actuator that is selectively responsive to operation of a float to move from a first position to a second position in which the valve actuator holds the valve element in its open position. When the valve actuator is in the second position thereof, fluid pressure that would otherwise tend to force the valve element toward its seat is essentially incapable of closing the valve element. Preferably, a force vector applied through a flapper-type valve actuator forms an essentially nonnegative, more preferably generally collinear, angle with a bisector line passing through a pivot axis of the valve actuator and a primary contact point between the valve actuator and the flapper.

Abstract: A blow-off valve for a hydraulic dashpot comprising a fluid charged cylinder (1) and a piston (3) that travels back and forth therein on the end of a piston rod. The piston partitions the cylinder into two compartments (6 & 7) and is provided with breaches (4) and shock-absorbing valves. The piston rod (2) or an extension (8) thereof is hollow and accommodates operating components (13).

Abstract: A valve in a filter having a valve body that is installed in a valve housing and is displaceable between a closed position and an open position. The valve housing has an elastically deformable clamping collar that protrudes radially in relation to its outer housing wall.

Abstract: A process plant (1) for handling combustibles fluids, for example an oil production plant in which gaseous hydrocarbons are separated from oil and in which surplus gases or residual gases from uncontrolled build-ups of gas pressure in the process escape through process or safety valves in the plant and are conducted to a collection line (9). The surplus or residual gases are conducted via the collection line (9) to one or more low-pressure stores (2) and a connection line or return line (11, 3) is arranged from the store(s) (2) to the process or another treatment unit for processing the returned or collected fluid. The low-pressure store(s) can expediently comprise the crude oil or raw product store (2) of the process plant upstream of the process plant.

Abstract: A device for flow rate limitation at low differential pressures, particularly for limiting the volumetric inhalation flow during inhalation of therapeutic aerosols, consists of a housing 11 including an aspiration orifice 14, an inhalation orifice 15 and a flow passage 23 disposed therebetween. The flow passage has a flat elongate cross-section with flexible large-area walls 18, 20 having a cross-sectional area adapted to be reduced, as a function of the differential pressure prevailing between the inhalation orifice and the aspiration orifice, as well as of the flexibility of the material of the walls, to a size appropriate for a predetermined volumetric maximum inhalation flow.

Abstract: A method, system and apparatus for performing peritoneal dialysis are provided. To this end, in part, a manifold for a medical fluid unit including at least one flexible membrane is provided. The manifold includes a plastic body defining an aperture, a fluid pathway communicating with the aperture and at least partially defined by the plastic body, and at least one port extended from the plastic body and communicating with the aperture. The port has a thickness and defines an opening, wherein at least a portion of the thickness is tapered and at least a portion of the tapered portion is heat sealed to the membrane.

Abstract: A check valve for a fluidic system includes a fluidic conduit having an inlet with a first particle barrier, an outlet with a second particle barrier and a fluid chamber between the inlet and the outlet; and at least one particle disposed in the fluid chamber, the particle or particles aggregating at the first particle barrier to form a first hydrodynamic resistance when a first fluid pressure at the inlet is less than a second fluid pressure at the outlet, the particle or particles aggregating at the second particle barrier to form a second hydrodynamic resistance when the first fluid pressure is greater than the second fluid pressure.

Abstract: A combination valve support and sealing element is used in a filter cartridge in which the filter cartridge includes a filter element within a housing closed by an end plate having a central opening surrounded by an array of radial openings spaced a fixed radial distance from one another. The valve support and sealing element is comprised of a unitary body having an annular sealing lip for sealing with the end cap of the filter element, which sealing lip deflects under oil pressure to allow oil to bypass the filter element if the filter media of the filter element is clogged. An anti-drainback valve is provided by a radial flange projecting from the unitary body, which radial flange overlies the spaced radial openings and prevents fluid from flowing back out of the spaced radial openings when not under pressure. When the fluid is under pressure, the radially projecting flange deflects, allowing oil to flow past the flange, into the housing and through the filter element.

Abstract: Heat pump and a method for controlling a cooling/heating capability thereof, in which a capacity varying device is improved for adjusting a cooling/heating capability, the heat pump including a compressor having an inlet for drawing, and compressing low temperature and low pressure refrigerant, and an outlet for discharging the compressed refrigerant, a four way valve for connecting the outlet and the inlet to an indoor heat exchanger and an outdoor heat exchanger selectively depending on cooling/heating, the indoor heat exchanger for evaporating/condensing the refrigerant by heat exchange with room air in cooling/heating respectively, the outdoor heat exchanger for evaporating/condensing the refrigerant by heat exchange with external air, a capillary tube having a reduced diameter for expansion of the refrigerant, a change over valve having a plunger movable by a pressure difference provided therein, and a connection tube connected the indoor heat exchanger and a four way valve, and a bypass tube connected b

Abstract: A device for sensing fluid movement within a microfluidic channel which uses feedback to control its operation. The device measures electric parameters to interpret fluidic parameters such as flow speed, and the presence or absence of fluid within the channel.

Abstract: The invention relates to a valve arrangement with a pressure limiting valve and a flow regulator valve, which comprises a flow regulator piston, having at least one first hydraulic resistor, distinguished in that the flow regulator valve's (5) flow regulator piston (15) has a split pressure return surface and in that the first part (ring surface (45)) of the pressure return surface is capable of working at a pressure p1 and a second part (annulus surface (31)) of the pressure return surface is capable of working at a pressure p2.

Abstract: An apparatus and method are provided in which a vaporizer vaporizes a liquid feed for introduction to a feed conversion unit such as a steam active reformer. A condenser condenses vaporized feed from the vaporizer when introduction of feed to the feed conversion unit is stopped. Condensed, liquid feed is passed back into the vaporizer and is conserved rather than going to flare.

Abstract: An anti-microleakage apparatus is used in a sputtering deposition equipment. A metallic object, such as a wafer, is put in a process chamber. A cryo-pump is used to vacuumed the process chamber. A heater to heat up the process chamber to allow a thermal reaction. The heater is movable and is coupled to an inner bellows line, which allows a low pressure gas can be flushed into the process chamber. The anti-microleakage apparatus is formed on the inner bellows line by wrapping the inner bellows line with an outer bellows line. A higher pressure is created between the inner bellows line and the outer bellow line by filling in a gas. A pressure meter is coupled to the outer bellows line so as to monitor the actual pressure of the higher pressure. When microleakage occurs, the information cab obtained by the pressure meter.

Abstract: A dispensing valve is provided for being sealingly disposed with respect to, and dispensing a product from, a discharge opening of a container. The preferred form of the valve includes a generally annular marginal portion adapted to be sealingly engaged when the valve is sealingly disposed with respect to the container discharge opening. The valve also includes a central head portion extending from the marginal portion. The head portion has an exterior side with a generally concave shape when viewed from outside the container and has an interior side with (1) a planar central area, and (2) a generally curved, radially outer portion which tapers toward the planar central area such that the exterior and interior sides converge toward the planar central area to provide a tapered construction with reduced thickness.