Abstract: A gas-lift valve includes a valve member having an inner wall defining a flow passage having a longitudinal axis, the valve member having a planar inlet end and an outlet end, the inner wall diverging from the inlet end to the outlet end so that the flow passage increases in cross sectional area from the inlet end to said outlet end.

Abstract: There is a balanced plug valve with a contour shaped wall. The contour shaped wall forms a gap with an edge of a balanced plug. Fluid is able to flow through an input port, through the balanced plug, through the gap, and out an output port. The shape of the contour and the relative position of the balanced plug to the contour shaped wall affect the modulation of the rate of the fluid flow through the gap, and thus, through the valve. Multiple possible variations of the dimensions of the contour shaped wall make possible a multitude of flow rate verses valve stroke relationships. Further, the use of a balanced valve decreases friction forces on the plug which allows for smaller, more efficient, and more economical valve actuators.

Abstract: In a vacuum exhaust valve in which a valve seat in a flow path connecting a chamber port and a pump port is opened and closed by a valve body, a flow rate adjusting portion in a gradually-tapered shape to be fitted in an inner hole of the valve seat is provided to the valve body in addition to a valve sealing member for opening and closing the valve seat in a poppet manner and the flow rate adjusting portion functions to gradually increase an exhaust flow rate when the valve body opens.

Abstract: A pressure regulator assembly usable in, as an example, a multiple channel high throughput purification system. The pressure regulator assembly includes an inlet line and an outlet line connectable to a fluid channel. A regulator body has a regulator inlet connected to the inlet line and a regulator outlet connected to the outlet line. The regulator body has a chamber therein in fluid communication with the regulator inlet and outlet. A nozzle is in fluid communication with the regulator inlet and has a nozzle outlet adjacent to the chamber. A stem is axially aligned with the nozzle outlet and has a regulating surface adjacent to the nozzle outlet to restrict the fluid flow through the chamber to the regulator outlet. A mounting rod is attached to a mounting portion on the stem. The mounting rod and stem are axially moveable in the regulator body relative to the nozzle outlet.

Abstract: A valve and an arrangement for a fire suppression water sprinkler system includes a valve which has an inlet and an outlet with a restricted orifice to limit the flow through the valve to correspond to the flow through a single sprinkler head. The valve has a biasing member so that the valve opens when the pressure in the inlet exceeds a predetermined pressure and the valve may be opened manually to test the system or to drain the system.

Abstract: A valve (12) for a motor vehicle air spring (2) having an ancillary volume (6) provides a finely metered continuous opening up to the complete cross section without throttle and a stable performance for flow forces results. The valve (12) is characterized by a star nozzle (50) which includes any desired number of slots nS (52) which mutually intersect and each slot has the length DS (58) and a width sS (56) and the slots are arranged so as to be concentric. The star nozzle peripheral length LUS (64) is increased compared to a round nozzle LUR. For the valve cross section, AVS=LUS·HS applies. The throughput cross section ADS of the star nozzle (50) is so large that it corresponds at least to the cross section AL of the inlet (68) and the outlet (70). A preferably triangular-shaped valley-like recess (66) is provided between each two mutually adjacent ones of the slots (52). The sealing body (40) of the valve (12) is preferably configured as a collar.

Abstract: An outlet valve is arranged in the bottom of a vessel intended to be filled with liquid and has a valve disc (1) connected to a piston rod (4) and a piston (5) actuated by a pressure medium. The valve disc (1) is movable between a first and a second position and is arranged to bear against a valve seat (2) in its first closed position. The piston (5) is arranged in an operating device (6) provided with a connection (7) to a source for pressure medium. The operating device (6) is designed as a unit sealed from the liquid and is arranged at such a distance from the valve seat (2) that the liquid, when the valve is open, passes a zone between the operating device (6) and the valve seat (2).

Abstract: A fluid metering apparatus includes a gas inlet, a first regulator in fluid communication with the gas inlet and configured to emit the gas at a first gas pressure, and a second regulator in fluid communication with the gas inlet and configured to emit the gas at a second gas pressure. A first valve is in fluid communication with the first regulator and a second valve is in fluid communication with the second regulator. A switch mechanism has two actuators which, when separately actuated, causes either the first valve to be open and the second valve to be closed or the first valve to be closed and the second valve to be open. The apparatus further includes a fluid pressure regulating device having a fluid inlet port which receives a fluid at a fluid inlet pressure, a gas inlet port and a fluid outlet port.

Abstract: An improved and reduced-size and low-cost gas supply system equipped with a pressure-type flow rate control unit, to be used, for instance, in semiconductor manufacturing facilities is disclosed. Transient flow rate characteristics are improved to prevent the gas from overshooting when the gas supply is started, and to raise the flow rate control accuracy and reliability of facilities. That eliminates non-uniformity of products or semiconductors and raises the production efficiency.

Abstract: When a fluid passes through a conventional elbow or valve in a piping system, turbulence is created in the fluid flow. The fluid may not stabilize and return to a laminar flow until 40-50 pipe diameters downstream. Turbulence in a piping system can cause a variety of problems such as noise, vibration, and/or erosion. Turbulence also creates a pressure drop which is undesirable. The flow diffuser of the present invention may be configured as a 90° elbow for use in a piping system to reduce turbulence and pressure drops as the fluid passes through the improved elbow. The elbow of the present invention included an elongate tapered discharge nozzle. The elbow can restore substantially laminar flow in a space of about four pipe diameters.

Abstract: Faucets are disclosed which provide a gentle, gravity driven cascading flow of water. A mixing valve is positioned in a faucet body which permits exiting water to flow outside the mixing valve inside the faucet housing. The valve unit is thus partially submerged by the water that has passed through it. The pool of water helps to create a more gentle uniform flow of water. A flow regulator can be positioned in the fluid outlet of the valve.

Abstract: A trap seal primer distribution unit capable of providing charges of water to two, three, or four sewer trap lines depending on the initial setting of the unit. The distribution unit comprises two main components. A lid for splitting the water from the trap seal primer valve removably attaches to a distribution body such that rotation of the lid into three alternate positions enables the distribution unit to alternately serve two, three, or four sewer trap lines.

Abstract: The diaphragm regulator controls fluid pressure in downstream piping. The regulator may also be used as an on/off valve, although this is not its primary application. A central circular housing in the body of the regulator receives a removable flow diffuser to reduce turbulence when fluid is flowing from the inlet port to the outlet port of the regulator. The flow diffuser has a flat circular base with an inlet zone in the center and a plurality of vanes extending from the inlet zone to the outer circumference of the base. These vanes are spaced apart and define a plurality of flow passageways permitting fluid to flow from the inlet port, through the inlet zone, through the passageways, through the transition zone and exit the outlet port. Each vane has a flat upper surface parallel with the base and an inclined surface sloping downward from the flat upper surface to the inlet zone.

Abstract: There is a balanced plug valve with a contour shaped wall. The contour shaped wall forms a gap with an edge of a balanced plug. Fluid is able to flow through an input port, through the balanced plug, through the gap, and out an output port. The shape of the contour and the relative position of the balanced plug to the contour shaped wall affect the modulation of the rate of the fluid flow through the gap, and thus, through the valve. Multiple possible variations of the dimensions of the contour shaped wall make possible a multitude of flow rate verses valve stroke relationships. Further, the use of a balanced valve decreases friction forces on the plug which allows for smaller, more efficient, and more economical valve actuators.

Abstract: Valve for testing and draining sprinkler systems comprises a half-body with an inlet channel and a half-body with an outlet channel which define a housing chamber which houses the valve shutter and is in continuous fluid communication with the inlet channel. The ball shutter has a through channel with end openings having a different diameter as well as a third opening of a joining channel the axis of which is at right angle to the through channel and the joining channel opens out into the latter. Within the outlet channel the shutter is supported by an annular gasket whereas at the inlet side the shutter is supported by a springing insert which has apertures and causes turbulences in the flowing flow.

Abstract: A liquid distributor for column packings is provided for the supplying of a liquid medium which includes a material or a material mixture and which tends to the development of inhomogeneities, for example, as a result of a segregation or of a polymerization. The distributor comprises at least one submember with a row of output points for the liquid medium, with at least one of the output points assuming a last output position in the submember with respect to the flow direction of the medium. In the last output point or output points, a flow director is arranged in or at the submember through which a through-flow of the medium can be effected in regions at which a stagnation of the flow would be present without the flow director.

Abstract: A diaphragm/spring operated pressure relief valve having a sensing passage of substantially the same flow area as the outlet orifice of the valve whereby failure of either diaphragm results in “fail open” configuration with the addition of a sensing inlet shroud located to capture the total pressure at the inlet and channel it to the sensing chamber to allow the valve to relieve full rated capacity in the event the sensing diaphragm is ruptured.

Abstract: A backup valve for use with a pool cleaner coupled to a source of water under pressure, comprising: a housing having an inlet and at least one outlet; and a pressure inducing apparatus in the inlet to direct the flow of water into the housing at a greater pressure than that supplied by the water supply.

Abstract: A fuel tank ventilation valve for a Laval nozzle, which has a sensitive regulation of the through flow quantity. The valve has a valve seat which is embodied on a valve seat body which has at least one opening that can be closed by the valve member. A cross section of the at least one opening is embodied as essentially smaller than an entry cross section of the Laval nozzle that is disposed spaced apart from the valve seat. The valve is suited for a metered introduction of fuel that has evaporated from a fuel tank of a mixture-compressing internal combustion engine with externally supplied ignition into an intake tube of the engine.

Abstract: A simple ammonia tool bar throttle valve is disclosed which is primarily for use with those systems which will utilize a stripper pump unit to increase the ammonia system pressure prior to the metering devices. The ammonia tool bar throttle receives the metered ammonia at a greater pressure than that of the system storage tank, and enters a lower chamber where it crosses a filter before exiting the unit across a throttle orifice which is throttled by the action of an aluminum throttle diaphragm which separates the lower chamber from a control chamber. The aluminum throttle diaphragm is positioned to maintain the desired mass flow by the forces of a separately regulated ammonia control fluid which is throttled to the control chamber before being bled back to the storage tank across an orifice.

Abstract: A valve, in particular a fuel injection valve for fuel injection systems of internal combustion engines is described. The valve has a valve seat surface formed on a valve seat body, which interacts with an actuatable valve closing body to form a sealing seat, as well as a perforated disk, which has at least one spray hole. The valve seat body and the perforated disk are designed as one piece from a flat, deformable workpiece. The workpiece is pot shaped so that in the area of the valve seat surface it is in sealing contact with the non-actuated valve closing body when the valve is closed and forms the perforated disk having at least one spray hole in an area downstream from the valve seat surface.

Abstract: A flow regulator that always guarantees the same rate of flow independently from the admission pressure is provided. This is achieved by a piston (26), which is mounted movably in the direction of flow and is loaded by an elastic element (29) in the direction opposite the direction of flow, being arranged in a housing (10) of the flow regulator. An annular space around the piston (26) is reduced due to the movement of the piston (26) in the direction of the flow. This flow regulator has a strong throttling action in the case of high admission pressure and a weak throttling action in the case of low admission pressure, so that the rate of flow is always maintained at a constant value.

Abstract: An outlet valve is arranged in the bottom of a vessel intended to be filled with liquid comprising a valve disc (1) connected to a piston rod (4) and a piston (5) actuated by a pressure medium. The valve disc (1) is movable between a first and a second position and is arranged to bear against a valve seat (2) in its first closed position. The piston (5) is arranged in an operating device (6) provided with a connection (7) to a source for pressure medium. The operating device (6) is designed as a unit sealed from the liquid and is arranged at such a distance from the valve seat (2) that the liquid, when the valve is open, passes a zone between the operating device (6) and the valve seat (2).

Abstract: A drain valve according to this invention comprises a mount, a peripheral flange, and a plate-like valve closure hinged to the mount. The valve closure includes a diverter which directs flow in a direction away from the hinged edge when the valve is open. The valve closure also has two latch arms to limit the amount it can open.

Abstract: In a choke valve having a cage with external sleeve flow trim, the large ports of the cage are aligned with the axis of the inlet bore and a deflection bar is positioned at the top end of the main bore, opposite to the inlet bore. The flow patterns within the choke are consequently altered with significant reduction of localized erosional wear areas.

Abstract: A pressure adjusting valve for a variable capacity compressor comprising a main body portion provided with a lower lid, a spring case provided with an upper lid, and a diaphragm held between the upper lid and the lower lid. The upper lid and lower lid are hermetically connected with each other through caulking and soldering. Alternatively, the upper lid and the lower lid are hermetically connected with each other by means of an electron beam welding.

Abstract: An appliance water valve assembly includes a valve body and an armature which is movable within the valve body. The armature includes an armature tip. The appliance water valve also has a valve seat which includes a valve seat orifice. The valve seat is positioned in cooperation with the armature tip such that the armature tip contacts the valve seat orifice when the appliance water valve is in a closed position and the armature tip is spaced apart from the valve seat orifice when the valve is an open position. The valve seat further includes a cylindrical ring which is positioned around the valve seat orifice. This cylindrical ring protects the valve seat orifice from damage.

Abstract: A gas flow control valve which enables mass flow to be measured using a flow straightener in a valve entry duct, a tube for lengthening the entry duct into the valve, a valve element exit port with suitably radiused edges and a flow stabilizer in the valve exit duct. Upstream and downstream pressure taps are positioned immediately upstream of the flow straightener and downstream of the flow stabilizer respectively. This enables the flow rate to be controlled not by the formulas traditionally used for valve dimensioning, but by formulas derived from more accurate formulas used for calculating mass flow with standard members of a fixed restriction type.

Abstract: The present invention uses a flow restrictor to provide a capillary size opening that minimizes any discharge of toxic gases from compressed gas cylinders in the unlikely event of the control valve or regulator failure. The use of this arrangement to provide a flow restriction in combination with a regulator in the form of a dispensing check valve provides a virtually fail safe system for preventing hazardous discharge of fluid from a pressurized cylinder or tank. A capillary tube or other structure can provide capillary size openings that minimizes any discharge of gas in the unlikely event of a failure of the regulator. Location of the inlet to the capillary tube at the midpoint of the cylinder can also prevent the discharge of liquid from the cylinder if the control valve system fails. Limiting the accidental discharge of fluid from the cylinder to gas phase fluids greatly reduces the uncontrolled mass flow rate at which fluid can escape from the cylinder.

Abstract: A valve according to the invention having a disk with a shaped opening and one side interfacing with and conforming to the shape of the exterior of the ball or plug. The disk fits inside the port at the seat area, and is secured by a ring. The ring can be threaded into the connection for the fluid pipe line. Alternatively, the connection can have a groove for an internal retaining ring. The disk is positioned so it interacts with the hole in the ball, in such a way that the desired flow characteristics are accomplished.

Abstract: A high Cv bulk process valve, control system and method convey a process gas or liquid for manufacturing semiconductors through a fluid passage. The fluid passage contains an aerodynamically shaped expansion chamber within which a valve seat and a moveable poppet are arranged for opening and closing the fluid passage. The aerodynamically shaped expansion chamber includes a conically expanding entry and a conically contracting exit and is shaped such that the resistance to flow of the process gas or liquid through the fluid passage of the valve is very nearly the same as through a straight tubing having a cross-sectional area of an inlet to the valve and a length of the fluid passage through the valve. The valve can be added or subtracted from a gas or liquid control system with virtually no changes in pressure drop of flow restriction, when the valve is in the open position. The valve minimizes the energy consumed by valves in semiconductor gas systems.

Abstract: An electrically controlled vacuum operated fuel vapor canister purge valve having a regulator valve subassembly with a vacuum signal chamber on one side of a pressure responsive power diaphragm which moves a regulator valve obturator for controlling flow from a vapor inlet passage to a vapor outlet passage for connection to an engine inlet. The vacuum signal chamber has a vacuum signal connection port and a recess or well with an atmospheric vent port and resiliently deflectable locking tab. A solenoid operated atmospheric bleed valve has a boss with a restrictor outlet which is quick-connected and seated in the well for electrically controlling vent flow into the vacuum signal chamber. The restrictor limits atmospheric bleed flow to attenuate the effects of sudden changes in the vacuum signal.

Abstract: An integrated micro pressure-resistant flow control module in which, when a fluid enters the integrated module past a pressure-resistant fluid channel and a suspended microstructure into a thermally-driven microvalve zone, the latter utilizes heat actuation to drive a silicon microbridge with mesa to open a linear proportional flow microvalve. A pressure-resistant flow sensing unit is disposed before the fluid channel to sense the flow amount. The flow sensing unit has a micro-suspending arm of pressure-resistant material located vertically at the fluid entrance of the module. The momentum of the fluid is thereof vertical to the micro-uspending arm, and the flow value is obtained by the deflection of the micro-suspending arm which changes the resistance value. The sensing unit is synchronously made with the microvalve and the silicon microbridge structure in an integration process so as to reduce manufacturing steps and minimize the size of the module.

Abstract: In a heating system having a refrigerating circuit accompanied with a sub-condenser, an air conditioner with the sub-condenser is designed with simplified piping structure and easy piping work. The system can be easily installed to an electric car and other vehicles. One block 11 is provided, in which a bypass flow path 9, a refrigerant returning flow path 10, connections 12, 13, 14, and 15 between both flow paths 9 and 10 and refrigerant main flow pipe 8, plural solenoid valves 21, 22, and 23 and plural check valves 31, 32, 33, and 34 to control flow passing states at the both flow paths to the refrigerant main flow pipe 8 are incorporated.

Abstract: A control valve having a sliding valve member body movable into valve closing position against a valve seat in an outflow conduit. The body has a conical outer end for controlling the flow through the valve and a plurality of fins extending radially from the outer end into engagement with the outflow conduit to guide the body.

Abstract: A flow control valve unit includes a pressurized fluid inlet, a pressurized fluid outlet, a pressurized fluid chamber in which is positioned a stationary seat member, a partition member dividing the pressurized fluid chamber into a first section in constant communication with the inlet and a second section that communicates with the outlet via a center opening in the stationary seat member, an orifice for communicating said first and second sections to each other, and a through hole formed in the partition member. A movable rod is positioned within the pressurized fluid chamber and extends through the through hole in the partition member. The movable rod has a sealing portion at one end for opening and closing the center opening in the stationary seat member during movement of the stationary member. A spring is operatively associated with the movable rod for urging the movable rod in a direction which causes the sealing portion to close the center opening.

Abstract: A valve body with a diverted flow passage extending between the inlet and the outlet is provided with a closure element that is mounted between the inlet and outlet and movable between first and second lift points for regulating fluid flow through the passage. A baffle disposed in the flow passage intermediate the first and second lift points alters one or more flow characteristics of the fluid to improve the efficiency of fluid flow through the valve. In a right angle body valve, the baffle takes the form of a plate with an aperture positioned concentrically with the inlet passage and the valve closure element. A top plane surface of the baffle plate is positioned below the centerline of the outlet and is perpendicular to the centerline of the inlet. The baffle separates turbulent areas of flow in the passage so that the pressure and flow of fluid exiting the valve are more uniformly distributed over the entire outlet.

Abstract: A fluid control valve having a valve body, a cage, and a flexible elastomeric diaphragm with a formed convolution to fully open the cage opening. An elastomeric diaphragm regulator with a flow diverter in the fluid flow path to reduce fluid flow separation and thereby reduce the required flow recovery area before pressure throttling. A raised knife edge seat located on the cage top in a position of stagnant fluid flow to reduce the build-up of contaminants on the seat. An elastomeric diaphragm regulator with a valve actuator coupled to a guided valve stem attached to the regulator diaphragm.

Abstract: The present invention uses a regulator in the form of dispensing check valve and a flow restriction arrangement to provide a virtually fail safe system for preventing hazardous discharge of fluid from a pressurized cylinder or tank. A diaphragm controls the movement of a check valve element to prevent discharge of gas from a tank unless a predetermined vacuum condition exists downstream of the check valve. A capillary tube or other structure that provides capillary size opening minimizes any discharge of gas in the unlikely event of a failure of the regulator. This system is particularly useful in the delivery of arsine gas and provides multiple safeguards against accidental discharge.

Abstract: A valve includes a fluid inlet passageway coupled to a fluid outlet passageway through an orifice and a valve plug that is moveable with respect to the orifice to vary the rate of fluid flow through the orifice. A seat ring is disposed at the orifice and includes a structural member having three vanes connected in a Y-shaped configuration extending into the fluid inlet passageway adjacent the orifice. The Y-shaped vane configuration prevents disturbances, such as intermittent vortices, from forming within the fluid in the fluid inlet passageway and, thereby, provides a stable rate of fluid flow through the valve.

Abstract: A set of tubes, having inlets and outlets, is placed on the downstream side of a modulating flow regulator or valve, or plug, or other member in a gas flow line. The inlets collect all of the gas flow from the gas flow line into the tubes. The tubes bend gently and redirect the gas flow so that turbulence is significantly reduced in the tubes and the resulting flow is generally laminar. The tubes are grouped as a bundle downstream and positioned such that the tubes are generally parallel to each other in the proximity of the outlets so that downstream flow is significantly less noisy and turbulent, resulting in a generally laminar gas flow.

Abstract: A proportional flow valve wherein inlet fluid pressure urges a main valve member toward a valve seat. A cylindrical bearing ring is mounted on the main valve member and slideable within an axial bore leading from the main valve seat to an outlet port for axially stabilizing the main valve member and limiting pressure differential across the main valve member while the bearing ring is at least partially disposed within the axial bore. The outer circumference of the bearing ring may have circumferential grooves for producing eddy currents and turbulence to enhance the limitation of pressure differential across the main valve member.

Abstract: A valve arranged for radial fluid flow from its inlet to its outlet has a spring-loaded diaphragm covering a valve cage member having a central opening communicating with the valve inlet surrounded by a plurality of peripheral openings communicating with the valve outlet. The valve cage member is downwardly concave and a valve top member closing off the valve body has an upwardly concave surface which is substantially the inverse of the concave surface of the valve cage member. Accordingly, the diaphragm moves from a zero flow configuration against the valve cage member to a full flow configuration against the valve top member symmetrically without stretching.

Abstract: An auxiliary tap valve insertable into a fluid flow path of a tap is disclosed. The auxiliary tap valve includes a sleeve body with an auxiliary valve seat member, and an auxiliary valve member. The sleeve body has at least one constriction for restricting fluid flow through the auxiliary tap valve. The auxiliary valve member is supported within said sleeve body and operatively connectable to a main valve member of the tap to be movable between open and closed positions to open and close the auxiliary tap valve to fluid flow. The auxiliary valve member has a substantially-flat chamfered first face and a conical second face respectively facing downstream and upstream relative to fluid flow through the tap. In operation, fluid flow through said constriction is restricted to create a venturi pressure drop downstream across said auxiliary valve member.

Abstract: A poppet valve apparatus is structured to reduce the rate of build-up of fluid-borne debris within its internal architecture. The inlet and outlet ports are arranged tangential to the internal cylindrical walls defining the valve's flow chambers, whereby a circular flow pattern is produced within the valve interior, and a specially contoured flow director efficiently redirects the circular flow pattern through a circular annulus defined by a valve seat and a sealing ring.

Abstract: A diaphragm type of flush valve for use with toilet devices such as urinals and water closets includes a body with an inlet and an outlet and there is a valve seat therebetween and a valve member movable to a closing position on the valve seat. The valve member includes a diaphragm which is peripherally attached to the body. There is a pressure chamber above the diaphragm for holding the valve member on its valve seat and there is a filter and a bypass orifice connecting the inlet and the pressure chamber. The filter includes a filter ring positioned beneath the diaphragm and adjacent the outer periphery thereof. The filter ring and the diaphragm are held in a fixed position relative to each other. The filter ring has a plurality of outwardly directed circumferentially spaced filter grooves. There is a seal ring between the filter ring and the body and facing the grooves.

Abstract: A fluid flow control device for maintaining a substantially constant predetermined rate of flow through a control valve including a fluid flow passage for directing fluid flow through the valve, a resilient fluid flow rate control washer positioned in the fluid flow passage for maintaining a substantially constant predetermined rate of flow through an outlet of the fluid flow passage irrespective of a pressure of the fluid in the passage and fluid flow conditioning washers for conditioning the flow of fluid through the flow rate control washer with the fluid flow conditioning washers being movable with respect to the flow rate control washer for aiding in the conformability of the flow rate control washer. Preferably, at least two fluid flow conditioning washers are positioned upstream of the flow rate control washer and at least one fluid flow conditioning washer is positioned downstream of the flow rate control washer.

Abstract: A pressurized fluid transfer system is provided comprising a supply storage vessel, a receiver storage vessel, a fluid flow passage extending from the supply storage vessel to the receiver storage vessel, a sonic nozzle comprising a convergent nozzle portion, a divergent nozzle portion, and a nozzle throat positioned between the convergent nozzle portion and the divergent nozzle portion. The nozzle throat defines a minimum flow area orifice having a cross sectional flow area which is smaller than a remainder of flow orifices within the system. Further, a sonic nozzle is provided in a pressurized fluid storage system such that sonic fluid flow into the fluid storage vessel is maintained until the storage vessel is about 90-95% full.

Abstract: A method and apparatus for high speed fluid dispensing suitable for ink jet printing comprising the dampening of supply pressure fluctuations during and following operation of the control valve by the incorporation of a resiliently compressible element within the system on the supply side of the valve seat, the element formed of a rubber air bladder placed within the valve chamber, the bladder configured to contract at pressures above the nominal supply pressure and to readily re-expand at pressures below the nominal supply pressure.

Abstract: A valve assembly for use in heating, ventilating and air conditioning systems. The valve assembly includes a valve body having a chamber in which is rotatably mounted a quarter-turn flow control ball valve. A valve body nut having an outlet port is threadably mounted on the valve body adjacent the outlet end of the valve body chamber. A flow venturi is removably mounted in the inlet end of the valve body. A pipe union tailpiece is detachably mounted on the inlet end of the valve body. A pair of pressure/temperature readout ports are mounted on the valve body for use in determining the rate of fluid flow through the venturi. A vent plug is mounted on the valve body for venting air from the ball valve chamber.