Abstract: A solenoid valve for a starting fluid injection system includes a passageway that interconnects the canister valve of the canister with a conduit that transmits starting fluid to the engine. An armature is mounted to slide in the passageway between an open and a closed position. Two valve seats are provided on opposite sides of the armature. The first valve seat is near the exit port of the passageway and is closed by the armature when the solenoid coil is not energized. The second valve seat is an annular O-ring gland designed to receive an O-ring that seals against the exterior of the canister around the threaded neck. When the coil is energized, the armature is moved to the open position, in which both the first valve and the canister valve are opened. A filter and an orifice-defining element are mounted in the valve body between the first valve seat and the exit port. The valve can operate with a coil current as low as 1 amp at 12 VDC.

Abstract: A device for use with surfaces submerged in and moving in relation to a gas or liquid to eliminate surface flutter. Such flutter is caused by turbulence in the form of eddies formed in the gas or liquid. The device reduces the size of the eddies by placing a wall within a predetermined distance of the surface. The wall has a structure of bumps or openings formed thereon. The size of the bumps or openings, the spacing thereof along the wall, and the distance of the wall from the surface are related, so that the maximum eddy size is determined by the distance of the wall from the surface.

Abstract: A gas valve (10) includes a shut off valve mechanism (11) with a control stem having two annular grooves (54) that receive a deformed teflon sealing member (52) to seal the control stem against leakage. The gas valve (10) also includes a pressure relief valve (17) that includes a bursting disc (74) spaced from a cup shaped shield member (80) that has venting notches about its periphery and is spaced outboard of the bursting disc.

Abstract: A fluid flow metering device is provided which includes a body and a plurality of flow restriction plates. The body has a duct, within which the flow restriction plates are disposed in a spaced apart manner. Each flow restriction plate includes an orifice disposed adjacent the interior wall surface of the duct and misaligned with orifices in adjacent plates. A side-to-side flow pattern is created by the position of orifices relative to the interior wall surface and the misalignment between orifices in adjacent plates which inhibits the accumulation of foreign debris within the duct.

Abstract: A fluid pressure reduction device includes a plurality of flow resistance modules. Each flow resistance module includes two flow segment plates. Fluid enters a flow path in the first flow segment plate, executes two right-angle turns and then enters a flow path in the second flow segment plate. The fluid then executes two more right-angle turns and reenters the first flow segment plate wherein it executes yet two more right-angle turns before returning to the second flow segment plate. A plurality of these double right-angle turns is executed by the flowing fluid before it exits the flow resistance module. Retaining fluid within the openings in the first and second flow segment plates are either a pair of baffle plates placed on either side of the flow segment plates, or the solid portions of adjacent flow segment plates.

Abstract: A noise suppression assembly including a retainer having (1) a retainer body defining a central cavity therein, (2) a base flange extending outwardly from the retainer body, and (3) a fluid channel defined therein. The noise suppression assembly further includes a flow control member having a central passage through which the flow of water advances, the central passage of the flow control member being offset from the fluid channel of the retainer. Moreover, the noise suppression assembly also includes a suppresser having (1) a suppresser body, (2) a bullet secured to the suppresser body, and (3) a hole defined therein through which the flow of water advances, the hole of the suppresser being offset from the central passage of the flow control member, and further the bullet being aligned with the central passage of the flow control member. The base flange of the retainer has a peripheral edge with the fluid channel being spaced apart therefrom.

Abstract: A fluid flow control device, sometimes called a variable fluid restrictor control valve or severe service control valve. These valves employ a moveable plug and are used to control high pressure fluids e.g. superheated steam. The valve of the invention provides axial flow passageways for the fluid, which have right-angled turns. The passageways are either on the radially outer surface of the plug or within an annular sleeve through which the plug is moveable.

Abstract: The flow regulating valve (10) of the ball or plug type comprises a ball (13) which rotates about a rotation axis (14) and comprises a shut-off area (15) and a regulation area (16). The regulation area (16) comprises a series of channels (160) arranged in planes substantially perpendicular to the rotation axis (14) and which are provided with an expansion area (161). At the initial opening of the valve, the surface of the channels (160) in contact with the inlet line (17) is reduced. Frictions are created in the channel (160) and in the expansion area (161) thereby providing for an important load loss. At the end of the opening, the surface of the channels in contact with the inlet line is important. The fluid circulated in planar sheets, without swirls and with a low load loss.Applications: Pressure fluid supply circuit, high differential pressure circuit, decompression circuits, pressure equilibrating circuits.

Abstract: A safety relief valve assembly for use in a fluid displacement apparatus of an automotive air conditioning system includes a valve mechanism which releases gas when the pressure in the fluid displacement apparatus increases above a predetermined pressure level. A control device is detachably mounted on the valve mechanism to direct the flow of the gas in a predetermined direction. An elastic member is forcibly disposed between the valve mechanism and the control device. The elastic member has a groove facing the valve mechanism. The groove and the valve mechanism collectively form a passage for directing excessively pressurized gas away from the hot components in the vehicle engine compartment.

Abstract: A compact pressure regulating valve makes installation work simple and has a hermetic structure of a stationary value member without a specific seal member. A pressure regulator (201) has a body (203) which includes a fuel inlet (215) and an inner periphery for positioning a stationary valve member (205) in a radial direction. When the movable valve member (208) leaves the stationary valve member (205), the valve opens. Operation of the movable valve member (208) is controlled by a diaphragm which moves to balance the pressure of the pressure chamber (211) and the pressure of a back pressure chamber (213) combined with a biasing pressure of a compression coil spring (214). As a result, the pressure of the pressure chamber (211) can be controlled without a specific sealing member or complex structure. In addition, a pressure regulating valve according to the present invention is compact and easy to install, and has no specific member to seal the stationary valve member.

Abstract: A ball valve assembly and method in which a ball valve is rotatable in a conduit section to selectively permit fluid flow through the bore to control the flow of the fluid through the conduit section. An insert is disposed in the valve bore, has a plurality of small-diameter passages and defines, with a portion of the valve, a large-diameter passage extending therethrough. The valve is rotated from its closed position to a first, partially-opened position where the small-diameter passages are in the flow path of the fluid to reduce the flow rate and the noise caused by the fluid flow. The valve can be rotated to a fully-opened position in which the large-diameter passage is in the flow path of the fluid to achieve relatively high flow rates. The insert forms an airfoil surface to prevent separation of the fluid as it passes through the large-diameter passage.

Abstract: A rotary noise attenuating valve is provided which utilizes noise attenuation technology previously utilized with linear valves. The arrangement includes an impedance assembly in which the area with the impedance assembly which is accessed by the flow downstream of a rotary closure element flow is varied upon opening of the rotary closure element, with an interface assembly disposed between the rotary closure element and the impedance assembly. As a result, benefits previously realized only in linear valves are attainable utilizing a rotary valve, while the benefits attendant to rotary valves (such as greater capacity, variable .DELTA.p and/or minimum .DELTA.p under max flow) are also attainable.

Abstract: A fluid pressure reduction device with low noise generation. A stack of annular disks with fluid passageways formed of inlet slots, outlet slots, and interconnecting plenums. Selectively stacking and orienting the annular disks along with an asymmetric slot pattern creates the desired fluid passageways without creating an uninterrupted axial fluid flow path. High recovery inlet stages are in fluid communicating series with low recovery outlet stages and the combination provides a high performance fluid pressure reduction device with low noise generation.

Abstract: A valve includes a fluid inlet passageway coupled to a fluid outlet passageway through an orifice and a valve plug which 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 extending into the fluid inlet passageway adjacent the orifice which prevents disturbances, such as intermittent vortices, from forming within the fluid in the fluid inlet passageway and which, thereby, provides a stable rate of fluid flow through the valve. The structural member may, alternatively, be connected to the valve plug or a wall of the fluid inlet passageway.

Abstract: A partial diffuser is provided in a flow path of a pipe or valve, dividing the flow path into an unrestricted flow region, a greater restricted flow region, and a lesser restricted flow region. The flow path is defined by an inside wall, and the lesser restricted flow region is proximate to the inside wall. The greater restricted flow region is distal to the inside wall, and the lesser restricted flow region lies between the greater restricted flow region and the inside wall. In one embodiment three partial diffusers project into the flow path in a ball valve. An inlet flow diffuser is installed in the inlet to the valve, and a valve element inlet flow diffuser is installed at an inlet to a valve element in the valve diametrically opposed to the inlet flow diffuser. A valve element outlet flow diffuser is installed in an outlet from the valve element at a position diametrically opposed to the valve element inlet flow diffuser.

Abstract: A valve trim is provided for a flow control valve wherein a plurality of perforated plates are stacked together. Each plate has a series of hole patterns formed therein, including a repeating pattern of four offset rectangular holes. As the plates are assembled, each plate is rotated in the same direction so that the hole patterns create tortuous pathways that include multiple episodes of change of direction, sudden contraction and sudden expansion of the high pressure fluid as well as forcing the fluid to flow through two or more of the plates.

Abstract: A fluid flow control device for use in a variable fluid restrictor control valve or severe service control valve. These valves employ a moveable plug and are used to control high pressure fluids e.g. superheated steam. The control device of the invention includes annular discs with fluid passageways through them. Pairs of discs together form a radial passageway for fluid between the interior of a stack of discs and its radially outer circumference. The passageways may have a smaller cross-section at a mid-region of the disc than at the radially inner or outer side of the disc.

Abstract: A noise and shock reducing assembly are provided. When used as part of a k valve assembly, the present invention includes a disk and a valve plate with a valve orifice passing therethrough. A perforated bellows is disposed about the valve orifice between the disk and the valve plate. An actuator moves the disk linearly with respect to the valve plate in one of a first direction and a second direction to cause compression or expansion of the bellows. The restrictive flow path presented by a combination of the folded side walls of the bellows and the perforations therein provide for a gradual increase or decrease in downstream pressure and flow during the opening or closing of the valve.

Abstract: A fluid control valve suitable for pressure reducing service. A valve is provided with a fixed cage member containing an internal passageway communicating with a cage inlet and outlet. A movable valve plug is slidably mounted within the cage member and contains an internal plug passageway. A fluid flow path is provided through the plug assembly and through the cage internal passageway so that multi-stages of pressure reduction are obtained. The provided fluid flow includes a combination of axial, outwardly radial, inwardly radial flows and a flow through the internal passageway of the plug assembly in order to obtain the required multiple pressure drops. The restricted flow passages at each stage are large enough in size so that any particulate in the fluid will pass out without plugging up the passages in the valve trim.

Abstract: A vessel for transferring and dispensing liquid which simultaneously recovers essentially all of the vent gas from the vessel being filled with liquid.

Abstract: A velcoity diffuser having a conical configueration is secured in the interior of a conduit conducting a flow of liquid to increase the velocity and decrease the pressure of an annular layer of the liquid flow adjacent the interior surface of the conduit while decreasing the velocity and increasing the pressure of a remaining portion of the liquid flow within the annular layer. The velocity diffuser employed in a conduit upstream from a butterfly valve diffuses high velocity flow of the liquid around the periphery of the valve and reduces vibration of the butterfly valve in its open position and cavitation downstream from the valve and thereby reduces the noise heard outside the valve housing.

Abstract: A rotatable flow control valve mechanism is provided having a valve body having a valve chamber and straight through flow passages intersecting the valve chamber. A rotatable valve element, which may be of straight, spherical or tapered configuration, is positioned for rotation within the valve chamber and is sealed with respect to the valve body by sealing elements that surround the flow passages. The rotary valve element defines a straight through flowway that is aligned with the flow passages of the valve body in the fully open condition of the valve and permits unobstructed flow through the valve and, when the flowway has a dimension at least as great as the dimension of the flow passage, permits objects such as pigs and scrapers to pass through the valve.

Abstract: An improved low-noise rotary control valve is disclosed. Such valve includes a valve body (10) and a rotatable ball (12) mounted within the valve body. The improvement includes an upwardly extending diverter (28) in the entry flow passage (15) of the valve body (10). A downwardly extending diverter (30) is disposed on the leading edge of the upper half (50) of the valve (12). Such diverters (28, 30) provide only small impedance to flow when the rotary control valve is in the full open position, but provide a tortious path for fluid flow through the valve (20) when it is partially closed. Such tortious path of the fluid inhibits vortex formation within the flow passage of the valve (14) with the result that vibration and noise are reduced. A third impediment placed in the outlet flow passage (16) extends upwardly from the valve and inhibits vortex formation downstream of the valve.

Abstract: The invention concerns a ball or plug valve for dividing differential pressure into several stages during opening or closing operation of the valve.The valve (1) comprises a body (2) defining a housing (2') for a movable member (3) consisting of a ball (4) or plug (5), and provided with a substantially cylindrical channel (6). The said valve (1) comprises a substantially cylindrical tubular insert (10) received in the said channel (6) and defining at least one inlet chamber (11) and at least one outlet chamber (12). These chambers are diametrically opposite and consist of two longitudinal recesses (13) formed in the wall of the insert (10) parallel to the longitudinal axis (14) of the channel (6). The chambers (11) and (12) communicate via two or more resistords (15) in two cylindrical sectors defined by the said chambers at the periphery of the insert.

Abstract: An air pressure adjusting module compensating balancing valve and its chamber structure is disclosed. A dovetail-shaped rod perpendicular to a horizontal channel is provided at a connection. At the bottom face of the horizontal channel is provided with conic shaped rod parallel to the horizontal channel. The cross-section of the horizontal channel has a circular arch shaped lower end. The outlet of the horizontal channel is a recessed face. At the bottom of the section of the horizontal channel is provided with an overflow channel having a slanting face at the bottom face thereof. A dovetail-shaped partition is provided at the bottom face of the overflow channel to partition the overflow channel into two sides, such that the air into the inlet and flows out from the outlet will obtain a higher flow rate ratio and the pressure is stable as laminar flow.

Abstract: The present invention provides a pressure surge resistant rupture disk assembly adapted to be sealingly clamped across a pressurized fluid containing passageway. The assembly basically comprises first and second rupture members having predetermined rupture pressures and means disposed between the first and second rupture members for providing a space for containing pressurized fluid within the assembly and for supporting the second rupture member against the first rupture member during a momentary pressure surge. The second rupture member faces the pressurized fluid and has at least one opening therein for allowing a restricted pressurized fluid flow therethrough.

Abstract: A flow control valve having a bypass valve section that opens when a main valve section has approached a closed state has a bypass start point that can be easily varied and adjusted, even after installation of the flow control valve. Further, cavitation is not generated in the valve. The flow control valve comprises a cylindrical body having a bypass valve seat and a plurality of protrusions on an inner peripheral surface to form bypass flow passages therebetween. A bypass opening and closing body has a bypass valve element formed at its front end portion and a plurality of slit holes formed on its outer peripheral surface so as to open and close the bypass flow passages between the respective protrusions, and is disposed in an axially movable manner. A piston is disposed in an axially movable manner in the bypass opening and closing body and has an enlarged outer diameter section formed on its rear portion and a communication hole penetrating therethrough in the axial direction.

Abstract: A unit for a single-lever mixing valve, includes a fixed housing defining an upper region, and a bottom, inlet region. An inner sleeve is located within the fixed housing. A cage is located within the fixed housing and adjacent to the inner sleeve. The cage is rotatable and radially displaceable relative to the housing. A spindle is swively mounted obliquely inside the inner sleeve, and engages the cage. The spindle is actuated externally relative to the fixed housing. A plurality of flat, superposed washers are provided. Each washer has at least one opening therethrough. One of the washers is an inlet valve attached to the fixed housing. Another of the washers is a distributor, temperature valve attached to the cage. Another of the washers is a volume valve forming a shim fitted between the inlet valve and the temperature valve. The volume valve and the cage are together radially displaceable on the inlet valve relative to the fixed housing.

Abstract: A solenoid controlled, pilot actuated inlet water valve apparatus has an inlet connected to a residential water source pipe and an outlet connected to an appliance such as a dishwasher or clothes washing machine. The inlet water valve contains a flow control, a noise suppressor, a pilot valve controlled by an electrically operated armature, and a main valve composed of a diaphragm, diaphragm insert, valving surface and bleed passage. The noise suppressor is located downstream of the flow control and reduces water velocity by first radially dispersing incoming water to the periphery of the noise suppressor in a dispersion chamber. Next, water passes through passage holes located around the periphery of the noise suppressor into a recombining chamber with it is directed toward a central exit port. When water moves in the recombining chamber toward the central exit port, the water converges from different directions further reducing water velocity and noise caused by cavitation.

Abstract: The present invention provides a pressure surge resistant rupture disk assembly adapted to be sealingly clamped across a pressurized fluid containing passageway. The assembly basically comprises first and second rupture members having predetermined rupture pressures, the second rupture member facing the pressurized fluid and having a predetermined rupture pressure equal to or lower than the rupture pressure of the first rupture member. At least one opening is provided in the second rupture member for allowing a restricted pressurized fluid flow therethrough.

Abstract: The present invention relates to a butterfly type control valve.This valve (30) comprises a body (31) defining a housing (32) for a mobile plug (13), rotating about an axis (14). The housing (32) is extended by an inlet channel (15) and an outlet channel (16), thus defining a connection passage between the inlet channel and the outlet channel. The effective cross section of this passage and therefore the flow rate of the fluid flowing through the valve are controlled according to the angular position of the plug (13). Furthermore, this valve comprises an element which generates a drop in pressure (18) provided with several calibrated passages (19) with a small diameter, located between the inlet channel (15) and a part of the housing, in a peripheral area of said housing (32).The valve makes it possible to reduce cavitation, noise and wear and tear of the valve by creating a considerable drop in pressure when the valve is slightly open, whilst allowing a greater control range.

Abstract: A valve includes a body having a valve element positioned therein. The valve element includes a bore therethrough, which is selectively alignable with bores through the valve body. As the valve element is moved to position the valve element bore in an askew position with respect to the valve body bores, flow eddies or turbulence may form and result in vibration and/or noise. The valve includes a plurality of diffusers which break up the flow to reduce the noise and/or vibration. Additionally, a secondary flow passage may be disposed between the valve element bore and the outlet bore of the valve body, to permit a portion of the flow through the valve to pass therethrough as the valve element is rotated to throttle the flow through the valve.

Abstract: A liquid-regulating valve comprises a cylinder tube (6) having holes (7) through which liquid can pass in radial jets. Further, the valve comprises a piston (9) and a distributing means (15) which is fixedly mounted in the cylinder-tube (6) and consists of several radial walls (16) upon which impinge the liquid jets entering through the cylinder tube holes (7) to be disintegrated and divided into part flows. At one end, the distributing means (15) has a cover plate (20) which, at the periphery, merges into an annular flange (21) projecting axially from the plate and serving to divert and guide the liquid part flows that, after impinging upon the radial walls of the distributing means, are directed towards the cover plate (20) and follow the plate along a substantially axial path of motion.

Abstract: A rotary valve noise attenuator with a rotary ball control element and a noise attenuator member mounted in the ball having multiple, elongated, substantially enclosed channels formed across the valve opening to split the flow stream into several smaller flow streams. The channel walls are perforated so each smaller flow stream is further dispersed and diffused into many minute flow streams after entering the channel. A noise attenuator constructed of several corrugated sections fixed crest to crest to form several diamond shaped channels across the valve opening each having four side walls with holes.

Abstract: In order to discipate energy from a high pressure fluid without causing damage and environmental nuisanse an energy loss device is used. This device includes energy loss paths including void areas arranged to draw energy from the high pressure fluid as it passes through the path. These paths may also include turns and other features to enhance energy loss.

Abstract: The present invention provides a pressure surge resistant rupture disk assembly adapted to be sealingly clamped across a pressurized fluid containing passageway. The assembly basically comprises first and second rupture members having predetermined rupture pressures, the second rupture member facing the pressurized fluid and having a predetermined rupture pressure equal to or lower than the rupture pressure of the first rupture member. At least one opening is provided in the second rupture member for allowing a restricted pressurized fluid flow therethrough.

Abstract: An apparatus for controlling foaming and flowrate in a beverage dispensing system, such as a draft beer dispensing system. A flow regulating member is positioned within a faucet member, at the delivery end of the beer dispensing system, to balance the dispensing system to, in turn, further prevent the break-up of the beverage into foam.

Abstract: A high differential pressure control valve having a plurality of stages of high resistance ports forming a high resistance passage and one or more low resistance ports forming a low resistance passage in a cage. The number of stages of low resistance ports is smaller than that of the high resistance ports so that a fluid at the side of an inlet passage is introduced into the high resistance passage under a low open degree range and into both the low resistance passage and the high resistance passage under a medium and a high open degree ranges.

Abstract: A valve has a housing provided with a fixed inlet disk in the housing formed with throughgoing water-inlet ports and a fixed outlet disk transversely spaced in the housing from the inlet disk and formed with deflecting chambers aligned transversely with the inlet ports. A movable valve disk in the housing between the fixed disks is formed with throughgoing passages alignable transversely between the respective inlet ports and deflecting chambers and has a side forming with the housing an outlet recess. Toothed steps are formed on the side of the movable valve disk to reduce noise.

Abstract: A rotary valve noise attenuator with a rotary ball control element and a noise attenuator member mounted in the ball having multiple, elongated, substantially enclosed channels formed across the valve opening to split the flow stream into several smaller flow streams. The channel walls are perforated so each smaller flow stream is further dispersed and diffused into many minute flow streams after entering the channel. A noise attenuator constructed of several corrugated sections fixed crest to crest to form several diamond shaped channels across the valve opening each having four side walls with holes.

Abstract: The invention relates to a mixer valve for hot and cold water having a cartridge-type body enclosing two overlapping plates one of which is fixed and the other movable on the fixed one through a control rod and in which the fixed plate has a mixing chamber (20, 20') with an antinoise structure (22) which only covers the internal lateral surfaces of the chamber itself, said antinoise structure (22) being made from a net element (23) or from protuberances or rough parts formed in the chamber itself.

Abstract: A sanitary fitting comprises a fitting body that can be fixed in place and is provided with an inlet, an outflow channel and an outlet channel. A sleeve with a discharge arm provided with a discharge spout is disposed on the fitting body and connected with the outlet in order to ensure flow therethrough. A valve unit is mounted on the body. Packing rings are disposed adjacent the outlet. In order to technically simplify the use of such a fitting, a flow stabilizer is arranged on the water outlet side of the valve unit in the flow channel.

Abstract: An improved low-noise rotary control valve is disclosed. Such valve includes a valve body (10) and a rotatable ball (12) mounted within the valve body. The improvement includes an upwardly extending diverter (28) in the entry flow passage (15) of the valve body (10). A downwardly extending diverter (30) is disposed on the leading edge of the upper half (50) of the valve (12). Such diverters (28, 30) provide only small impedance to flow when the rotary control valve is in the full open position, but provide a tortious path for fluid flow through the valve (20) when it is partially closed. Such tortious path of the fluid inhibits vortex formation within the flow passage of the valve (14) with the result that vibration and noise are reduced. A third impediment placed in the outlet flow passage (16) extends upwardly from the valve and inhibits vortex formation downstream of the valve.

Abstract: A fluid flow control valve includes a valve disk having a labyrinthine partition extending from its face. The partition describes a closed shape. The partition faces a valve seat. The range of control over the flow rate of a fluid is controlled by the length of the partition. Partition lengths are created by their shapes. Several complex shapes, giving rise to differing partition lengths are disclosed. An actuator urges the valve disk toward the valve seat to provide final control of the fluid flow.

Abstract: A rotary servo or throttle valve comprises a housing defining a chamber and discharge port in fluid communication with the chamber, a rotary valve spool for delivering fluid into the chamber, and a system for delivering pressurized fluid passing from the outlet opening of the valve in the chamber to the discharge port in the housing in which non-cavitating technology can be readily incorporated. The outlet opening of the valve spool is a wedge shaped groove formed in its periphery, the groove having opposed, arcuately diverging sidewalls. The diffusing system comprises an elongated member which may be rotated in the chamber to align a plurality of flow paths with the discharge port and the outlet opening. The elongated member and valve spool may be rotated independently in opposite directions to obtain faster flow rate changes.

Abstract: A surge relief valve suitable for high pressure application, for example in a crude oil pumped pipeline. The valve has a plug movable to expose different areas of an energy-absorbing cage trim to fluid flow. The plug position is controlled by a control device proportionately responsive to changes in upstream fluid pressure. The valve requires no external power for its actuation.

Abstract: An optional insertable feature to the trim or modulating member for ball-type valves limits the magnitude of fluid flow turbulence within the flow stream of the valve. This attenuates noise and cavitation caused by flow through the valve. The insert mounts into the interior of the trim member and presents two intersecting apertured surfaces. The apertures or holes are specially shaped, sized, and spaced to maximize flow efficiency and minimize fluid turbulence as a result of flow through ball-like valves. The size and orientation of the surfaces are such that they restrict and partition fluid flow through the valve to varying degrees at varying valve openings. Virtually all fluid is partitioned by being directed through the apertured plates during approximately the first 50 percent opening of the valve to minimize noise and cavitation, while insuring that the flow characteristic is a monotonic function between valve capacity and valve opening.

Abstract: A fluid distribution system, such as a valve, comprises a housing having a chamber which has a plurality of acoustic modes. The acoustic modes are excited when fluid flows through the chamber. An inlet passage and an outlet passage are disposed in fluid communication with the chamber. A plate is disposed in the inlet passage. A plurality of orifices are formed in the plate. The orifices conduct fluid from the inlet passage to the chamber and reduce the coupling between the flow of fluid through the inlet passage and the acoustic modes of the chamber. With this arrangement, the acoustic modes of the chamber and the resonance frequency of each of the orifices are substantially unexcited by the flow of fluid through the orifices.

Abstract: A fluid control valve which has a deformable valve member with a fluid passageway therethrough. The fluid passageway is closed by a pressure-exerting member. Initial actuation of the valve by pressure on an actuator assembly compresses a spring which moves the pressure-exerting member away from the deformable valve member, thus allowing the fluid passageway to open. The fluid control valve also having a base portion containing a tortuous path air channel. When the base portion is fitted against a neck plug of a reservoir, a vent opening in the neck plug opens into the air channel of the base, allowing air to enter the reservoir while preventing liquid from leaking out of the reservoir should the reservoir be tipped over.

Abstract: A rotary valve noise attenuator with a rotary ball control element and a noise attenuator member mounted in the ball having multiple, elongated, substantially enclosed channels formed across the valve opening to split the flow stream into several smaller flow streams. The channel walls are perforated so each smaller flow stream is further dispersed and diffused into many minute flow streams after entering the channel. A noise attenuator constructed of several corrugated sections fixed crest to crest to form several diamond shaped channels across the valve opening each having four side walls with holes.