Abstract: An apparatus for mixing a first fluid into a second fluid that comprises a housing (1) having a flow chamber (39) for the second fluid, a flow restrictor member (6) in the flow chamber, and holes (18) for introducing the first fluid into at least one gap (15, 16) between the flow restrictor member and those walls (5, 10) of the flow chamber (39) facing towards the flow restrictor member. The flow restrictor member and flow chamber, in a plane transversely to the principal flow direction (31) of the second fluid, each has the shape of a wedge. Gaps (15, 16) are formed between each of those two sides of the flow restrictor member that converge in a wedge shape and those walls of the wedge-shaped chamber facing towards the flow restrictor member. The holes (18) for introducing the first fluid are disposed in the region of the gaps (15, 16).

Abstract: A passage choke in particular for the outlet of a plumbing fixture which is installed between the end (9) of the outlet (5) and an aerator (6) or a flow controller, which is provided with a through-flow opening (8) which advantageously has to enlarge it a knockout (12).

Abstract: A mixer for viscous liquids having an inlet for connection to a pressurized source of the liquids and an outlet for the mixed liquids. A series of chambers are arranged between the inlet and the outlet, these chambers being separated by several convergent/divergent surfaces providing narrow openings between said chambers. The openings are in the form of slits defined by the inner edges of dies which also form the convergent/divergent surfaces upstream and downstream of the slits. The chambers include parallel sided portions which allow for quiescent flow of liquid through these portions. At least some of the dies are movable to adjust the width of the slits. Preferably, the dies and chambers are annular and concentric, and the liquids pass radially inwardly through the narrow openings during mixing and are subjected to increasing stress as they progress through the slits.

Abstract: A device for remotely actuating a piece of equipment by varying the flow conditions of a fluid, possibly incompressible, an comprising an actuating piston, a nozzle-needle assembly. One of the nozzle or the needle is mounted for sliding movement into the piston. An arrangement is provided for returning the slidably mounted nozzle or needle to a predetermined position relatively to the piston.

Abstract: A fluid flow control device includes a support brace fixably mounted in a uid flow tube. An actuator rod is slidably supported by the support brace. A plurality of conical washers are mounted in sliding engagement on the rod between a stop mechanism on the rod and the support brace. The conical washers are arranged along the rod in an abutting configuration such that adjacent conical washers abut alternately at an apex or base of the conical washers. In operation, the rod is moved so that a compressive force is applied to the conical washers. In this way, the conical washers expand in a radial fashion to reduce the fluid flow area between the device and the tube.

Abstract: A flue insert (50) for insertion into a flue stack (12). The flue insert includes a sleeve (52) that is inserting into the stack so as to function as part of the stack. A vane (54) is disposed in the sleeve. One end of the vane is fixedly attached to the sleeve. The opposed end of the vane is adjustably attached to the sleeve so that after the insert is installed, the overall length of the vane can be selectively set.

Abstract: A variable flow rate expansion valve designed for in-line installation in a fluid conveying conduit such as between the high pressure condenser and lower pressure evaporator of a refrigeration system includes an integrally defined restrictor disc and a closure disc for controlling the flow of fluid through the valve. The restrictor disc has a first set of flow apertures and the closure disc a second set of flow apertures. The closure disc is rotatably coupled to the fixed restrictor device in a plane parallel to the plane of the restrictor disc and perpendicular to refrigerant flow. A manual, calibrated, incrementally adjustable actuator permits the positioning of the closure disc with respect to the restrictor disc so as to permit the flow of refrigerant through the valve to be manually adjusted, by a chnage in the registry of the apertures in the closure and restrictor discs, in accordance with varying operating conditions and requirements.

Abstract: The water remediation and purification apparatus includes a cavitation nozzle which is operated with a throat size and pressure drop to incur cavitation in the water. The explosive and implosive bubble growth and collapse produces free radicals which interact with contaminants in the water to oxidize the contaminants. The cavitation process is enhanced by (1) a variable throat nozzle, (2) recycling the product back through the nozzle for further oxidation, and (3) programmable control feedback. Subsequent ultraviolet radiation from high energy lamps, ion exchange and/or degassifying treatment can be employed to produce water quality within acceptable levels.

Abstract: The present invention pertains to an apparatus for restricting supercritical fluid. The apparatus comprises an elastic tube through which the supercritical fluid flows. The apparatus also comprises means for adjustably compressing the elastic tube. The comprising means is in contact with the tube. Preferably, there is also means for facilitating flow through the tube. The facilitating means is in communication with the tube in proximity to the compressing means. In a preferred embodiment, the adjustable compressing means includes a first member having a first opening through which the tube extends. The first opening has a threaded portion. There is also a second member having a second opening through which the tube extends. The second member has a threaded shaft for threadingly engaging with the threaded portion of the first opening.

Abstract: A detergent dispenser that is utilized with solid cast detergent. A single valve is utilized to initiate a flow of a ready to use detergent solution that may be drawn off in container. The valve commences a flow of water that is split in a T-shaped fitting. An appropriate portion is routed to spray on the solid cast detergent and to dissolve the detergent into a concentrated solution. The concentrated solution flows into a conduit where it is mixed with the second portion of the water, diluting the solution to an appropriate concentration for use. A restricter located in the T-shaped fitting acts to split the flow of water appropriately to ensure that the discharge solution is in a ready to use concentration.

Abstract: A variable pressure reducing device for reducing high pressure in steam and hot water samples forces the liquid through an annular passageway between a pair of rods within a complementary pair of tubes. The flow rate through the rod-in-tube device, or the pressure drop across the device, is adjustable by means of a rotatable guide screw for adjusting the position of the rods within the tubes. The rods are tapered to provide a smooth flow of liquid through the device. The seal around the guide screw is self energized by means of a seal jacket between a valve gland and a stem portion of the guide screw constructed so that the biasing force of a spring on the seal jacket is supplemented by pressure from liquid flowing through the device. The guide screw is centered within the valve gland to keep the guide screw properly aligned, particularly when the device is used with a motor for rotating the guide screw to adjust the position of the rods.

Abstract: The watering valve (10) according to the invention is designed for feeding of water to the chickens according to their need for water in such a way that a flow restriction section (27) which is formed between an upper pin (16) and a part of the housing (12) associated therewith is variable in order to set different water flow rates. For this purpose, the upper pin (16) is provided with portions (25, 26) of different diameters. A variation of the relative position of this upper pin (16) in the housing (12) makes it possible to enlarge or reduce this flow restriction section (27). Accordingly, a smaller or greater quantity of water (per unit of time) can flow out of the watering valve.

Abstract: The water remediation and purification apparatus includes a cavitation nozzle which is operated with a throat size and pressure drop to incur cavitation in the water. The explosive and implosive bubble growth and collapse produces free radicals which interact with contaminants in the water to oxidize the contaminants. The cavitation process is enhanced by (1) a variable throat nozzle, (2) recycling the product back through the nozzle for further oxidation, and (3) programmable control feedback. Subsequent ultraviolet radiation from high energy lamps, ion exchange and/or degassifying treatment can be employed to produce water quality within acceptable levels.

Abstract: The present invention is an apparatus for restricting the flow of fluid. The apparatus defines a tubular member having a channel. The tubular member has a first portion in which the channel has a first cross sectional area. There is also a second portion for restricting the flow of fluid defined by a reproducible deformity in the channel such that the channel has a second cross sectional area which is smaller than the first cross sectional area of the first portion. The tubular member further defines a third portion having a third cross sectional area which is greater than the second cross sectional area of the second portion. All of the cross sectional dimensions of the second and third portions are disposed within a cylindrical envelope having a diameter equal to the diameter of the first portion and extending therefrom. The tubular member is comprised of a material having sufficient rigidity to maintain a preferred reproducible permanent deformity in the channel.

Abstract: A flow control apparatus having a pair of substantially identical housings, each having a path for fluid passage therethrough bounded by an annulus; a resilient body; and substantially identical portions borne by the housings releasably engageable to interlock the housings in an assembled configuration with the resilient body captured in the housings between the annuli of the paths for fluid passage.

Abstract: The invention relates to a flow limiter for hydraulic fluid, comprising at least one passage (14) of reduced cross-section for the hydraulic fluid, the passage (14) being formed between two contiguous pieces (12, 22) each having at lest one planar face (10, 20), at least one of the two pieces (12, 22) comprising a recessed impression (14) on at least one of its faces (10, 20), the passage (14) of reduced cross section being defined within the space situated between the recessed impression (14) formed on a planar face (10) on one of the pieces and the planar face (20) of the other piece (22), the length of the passage (14) of reduced cross section being adjustable by varying the relative position of the two pieces (12, 22). According to the invention, a pierced hole (18) is made in one piece (12) at one end of the passage (14) of reduced cross section and in that a pierced hole (24) is made in the other piece (22) at the other end of the passage (14) of reduced cross section.

Abstract: A flow control valve is disclosed wherein a deformable elastomeric element is positioned at least partially within the flow path of a fluid passing between an inlet and an outlet. By deforming the elastomeric element, the cross-section of the flow path of the fluid is changed, thereby controlling the flow of fluid through the flow control valve. The elastomeric element may be of various standard configurations and is easy and inexpensive to replace in the event of excessive wear.

Abstract: A shaft-mounted piston is reciprocally disposed on the axis of a valve inlet opening such that increased pressure from within the motor casing of a centrifugal compressor causes the piston to move in the direction of the refrigerant flow, against a biasing means, to increase the flow of refrigerant through the opening, and to thereby regulate the pressure drop across said valve to a predetermined level. The shaft has an extended portion projecting through the piston toward the motor casing such that when the compressor is shut down and the pressure is thus greater in the valve than in the motor casing, the piston can move out of the inlet opening to the extended portion of the shaft to thereby allow the unrestricted flow of refrigerant into the motor casing.

Abstract: A bleeder valve assembly in a very high pressure water gun system is provided with a body connected to the system and a removable core received within a bore in the body. The bore and core are sized to fit together snugly to define a fine gap therebetween to allow controlled bleeding of the high pressure to the outside of the body. The core is positioned within the bore to safely relieve high pressure without prematurely closing when the connected line is bled to a lower pressure.

Abstract: A variable-geometry duct having at least one moveable side wall, and a bellows interposed between the side wall and a back-up structure. The bellows creates a sealed cavity between the moveable side wall of the duct and the back-up structure. Pressurized fluid in the cavity is controlled so as to maintain a desired pressure differential between it and the pressure of the fluid carried by the conduit for all positions of the moveable side wall.

Abstract: A solid state apparatus for regulating the flow of fluids in general, and natural gas, in particular, is provided. The solid state apparatus includes an actuator made of electrostrictive, magnetostrictive or piezoelectric material. The actuator displaces upon application of an electric field to vary the compression on an elastomer having an orifice, thereby varying the amount of elastomeric material extruded into the orifice. Fluid flow through the regulator is thereby controlled. A system for regulating the flow of gas integrates the regulator with a sensor to detect a gas characteristic, such as gas partial pressure, and send control signals to control the operation of the regulator. The solid-state gas regulator is capable of low cost production and operation and suitable for electronic feedback control.

Abstract: A flow control device for feeding water flow at a constant flow volume regardless of the pressure. The device comprises a conduit body with a coupling end for coupling with a water supply pipe to receive water therefrom and a discharge end for discharging the water therethrough. The conduit body is formed in the coupling end with a concavity having a bottom wall recessed from the coupling end face and a peripheral inner wall. A passage extends through the conduit body to have its one end opened into the bottom wall and the other end leading to a discharge end. Received within the concavity is an elastic valve having a constricted aperture in fluid communication between the water supply pipe and the passage for feeding the water into the passage through the aperture from the water supply pipe.

Abstract: A flow control device for controlling the rate of flow liquid wherein a liquid supply tube is inserted in a liquid supply tube insertion channel extending in the longitudinal direction of the liquid supply tube. A roller is provided for squeezing the liquid supply tube against the bottom of the tube insertion channel. Ridges are provided for squeezing the opposite side edges of the liquid supply tube to a greater degree than the central portion of the liquid supply tube. The bottom of the insertion channel has a first inclined surface inclined with respect to roller bearing grooves for fine adjustment of the rate of liquid flow, and a second inclined surface terminating in the first inclined surface and inclined in the same direction as the first inclined surface but by a greater angle than the first inclined surface for a coarser adjustment of liquid flow through the liquid supply tube.

Abstract: A throttle in a hydraulic system having a cross section which varies as a function of fluid flow in the hydraulic system. A throttle restriction includes a bore with a wire end segment extending in the bore that reduces the cross section of the bore. The wire end segment has an end face, facing counter to the pressure fluid flow, on which flow forces are operative. The flow forces are capable of positively displacing the wire end segment out of the bore counter to a spring restoring force. The throttle can for instance be used in the hydraulic brake systems in which peaks in volumetric flow and pressure are to be reduced. The throttle can also be used wherever self-cleaning of the throttle restriction is desired.

Abstract: A fluid flow control disc has a central passage for the flow of fluid. The disc has a peripheral lip seal that insures that the fluid flow will not by pass the central passage.

Abstract: A variable orifice device for passing fluent material under pressure includes a piece of resilient material bent out of its normal shape so that one surface is in tensile stressed condition and the other surface is in compressive stressed condition. A slit extends between the two surfaces. Because of the difference in the stressed conditions of the two surfaces, one end of the slit is open and the other end, at the compressively stressed surface, is in force closed condition. The piece of resilient material is mounted in its bent, stressed condition in a frame which holds the material in the bent condition. The piece of resilient material may be cut from silicone rubber tubing such as is used for peristaltic pumps. The frame may be two annular members, one of which is a push fit in the other, with the other having an annular shoulder against which a disc of the resilient material is trapped and sealed by the one annular member.

Abstract: A variable flow restrictor valve is disclosed that is adapted to be inserted in a fluid line to provide first and second alternative flow paths therethrough in accordance with the pressure differential between inlet and outlet ends of the valve. The assembly is characterized by use of a moveable orifice tube which defines one of the alternative paths and an intermediate part of a valve housing defines a flow path which forms another alternative flow path having flow therethrough regulated by a stop disk and a valve disk both of which are fixed to the orifice tube on either side of the intermediate part to position the valve disk to either close or open the another alternative flow path in accordance with the aforesaid pressure differential.

Abstract: An apparatus for controlling the flow of coolant through a nuclear fuel assembly, in which a coolant flow restrictor 26 having longitudinal ducts 30 is provided with plug members 48, 49, 50 of different lengths. The plug members 48, 49, 50 are moved longitudinally by the effect of neutron induced growth on an actuating member 60. A connecting member 53 converts the growth of the actuating member 60 into a longitudinal movement of the plug members 48, 49, 50 so that they are progressively withdrawn from the flow restrictor 26 to increase the flow of coolant through the flow restrictor 26.

Abstract: A fluid flow restrictor comprising a restrictor valve and a flexible tube housed in the valve, and an internally located outwardly biasing spring positioned in the tube such that the tube is biased against the action of the valve, the assembly being adapted to reduce the diameter of the tube with minimal permanent deformation of the tube.

Abstract: A fluid controller has a disk-shaped body member with a positioning mechanism and lip mechanism. The controller is unitary and when positioned in a fluid flow in a first position enables fluid to flow through an axial bore in the disk-shaped member and around the disk member and in a second position enables fluid flow only through the axial bore.

Abstract: A fluid friction controller that includes an outer member having a first friction control surface and an inner member having a second friction control surface. The control surfaces coact to define an elongated orifice that diverges from its entrance toward its exit. The length of the orifice is related to the angle of divergence so that the flow of a fluid passing therethrough remains attached to the control surfaces and the dynamic pressure in the flow does not exceed the static pressure at any point along the length of the orifice.

Abstract: A flow selector device whose fluid flow is regulated by the rotational setting of a rotor body in a housing; and although the metering passageways have outlets spaced from the axis of the rotor and its manipulating shank, other passageways are provided in the housing, which channel the fluid then to an outlet in and concentric with the rotor and its flow-rate adjustment shank. One of those other passageways is an annular groove formed into the rotor's manipulating shank, leading to a radial passageway in the shank, thus carrying fluid to the shank outlet channel regardless of the rotational setting of the rotor. Another of those other passageways is in the housing; and its provision is facilitated by forming it to open onto an outer face-portion of the housing, then sealing the outer portion of the passageways by a ball member forced into the outer end of the passageway. The rotor is held axially of the rotor by a snap ring, and by a nylon ring between the snap ring and the housing.

Abstract: A flow meter including a variable area obstruction which is mounted in a conduit. Inputs to a differential pressure transducer are positioned in the conduit on opposite sides of the obstruction to measure fluid pressure differential across the obstruction. In one embodiment, a sleeve is secured within the conduit thereof substantially separated from the conduit so as to prevent fluid condensation on the sleeve, and to create a dead end pocket between the conduit and the sleeve for collecting liquids from the conduit end preventing them from contacting the obstruction. The variable area obstruction comprises an elastic membrane that includes first, second and third leaves which extend into the flow stream and are compliant to fluid flow so that an increase in flow rate increases the deflection of the leaves and increases the through flow area through the obstruction.

Abstract: A flow regulator for water or other fluids has a housing with an internal shoulder between its inlet and outlet. The shoulder faces the inlet and slidably supports an elastically deformable annular flow restrictor which cooperates with a centrally located stud to define an annular passage extending from the inlet to the shoulder and followed by an annular portion of the channel between a conically diverging stepped or roughened internal surface of the housing and a stepped or roughened conical external surfaces of a guide member which carries the stud. Deformation, and hence the flow restricting action, of the flow restrictor depends upon the pressure differential which is established by the conveyed fluid.

Abstract: A device for adjustably restricting the flow of exhaust gases in a furnace flue to conserve fuel is disclosed. It comprises two interlocking pipe sections and a helical element having one end fixed to the inner surface of each pipe section. The helical element has a circular opening along its central axis. The degree of restriction provided by the device is adjusted by twisting or separating the two pipe sections.

Abstract: A volume governor for flowing media under static pressure formed as a throttle member and including a segmented cone with the angle of cone of about 90.degree. and made of plastics, a bore formed at an open apex is closed with a plug. The plug is made of elastic material with high damping properties. The bottom of the cone is closed with a perforated bottom plate.

Abstract: A distinctive apparatus for forming an absorbent body includes a forming chamber, and a fiber delivering mechanism for providing a flow of fibrous material within the forming chamber. A forming layer, which is located in the forming chamber and is movable therein, receives deposit of the fibrous material thereon. A conduit mechanism supplied a flow of dispersed bodies of high-absorbency material, which enter the forming chambers and intermix with the flow of fibrous material thereon. A regulating mechanism controls a velocity of the flow of high-absorbency material into the flow of fibrous material to thereby form a selected distribution of high-absorbency material within the fibrous material deposited onto the forming layer.

Abstract: A control valve for controlling the flow of a liquid, especially liquid of hydraulic damping unit with a hydraulic piston-and-cylinder arrangement, has a pressure chamber defined by lamellae extending along generatrices of a cylindrical housing wall and an end wall juxtaposed with this cylindrical wall. Since the lamellae are flexible, when there is a pressure increase in the chamber, the lamellae are deflected outwardly to reduce the free cross section of the throttle gap.

Abstract: A pressure compensating flow control device for conserving water usage by controlling the water flow rate from faucets located in homes and commercial properties. The device is an inline flow control apparatus which controls the flow of water going to sinks, showers, and lavatories in a manner to conserve water usage and is therefore especially energy efficient when used to control the flow of heated water. The control device is pressure compensating in a manner which tends to provide a constant volumetric flow rate as the upstream pressure fluctuates, and as the faucet is progressively opened. The control device includes a housing within which two mutually reciprocating parts are biased apart by a spring means so that as the upstream pressure increases, the two parts move towards one another, thereby compressing the spring means therebetween, and increasing the friction to flow therethrough.

Abstract: A throttle device for applying a back pressure to a high viscosity point in an airless paint supply system. The throttle device comprises a tube member having an inner through hole and an elongated core member inserted in the tube member and extending along the length of the tube member. A support means supports the core member relative to the tube member and a clearance is provided between the tube member and the core member to constitute a passage for the paint, the clearance being equal to or larger than 1.5 millimeters, and the length of the tube member being selected in relation to the clearance so as to cause a required loss of pressure.

Abstract: A nozzle and a device for the application of the nozzle are disclosed. In the nozzle a mechanism is provided so that the dimensions of the hole for the flow of fluid can be varied according to the pressure differential between the inlet and the outlet. The above can be applied to the making of nozzles and/or devices, the delivery rate of which is directly proportionate to the differential pressure between the inlet and the outlet.

Abstract: Arrangement for controlling and regulating a liquid (2) flowing through a line (3). The arrangement comprises a valve body (9) provided with a press-on or deforming element (11) moveable along the line and designed to cooperate with the said line for regulating the flow of the liquid (2), by means of restriction thereof to varying degrees. In the line (3) there is fitted a continuous hollow element (4) having a number of openings (8) through which the said liquid can flow. The press-on element (11) moveable along the hollow element (4) is designed to press the line (3) against the said element (4). By this means a shifting of the press-on element can be carried out such that an optional area of the openings can be uncovered for throughflow since that part of the hollow element where the said area is located is situated on the outlet side in relation to the press-on element.

Abstract: A vacuum venturi device including a bypass valve responsive to an increase in inlet pressure to divert pressurized gas to the low pressure port of the device to effect fast vacuum cut off and blow off.

Abstract: A fluid flow stabilizer which includes two pluralities of stabilizer units adjacent one another. Each unit includes a plurality of parallel axially extending tubules. The units are movable into different relative positions so that certain of the tubules of a unit are aligned in fluid communication with tubules of another unit. Index means are provided for fixing the units in different selected relative positions.

Abstract: A flow regulating device comprises a chamber forming element covered by a tube of elastomeric material, which together form a flow passage leading from an inlet port to an outlet port. The flow passage forms a first flow chamber which is partly defined by the elastomeric tube and which is configured such that flow of fluid through the chamber causes inward deflection of the tube and thus constricts the flow cross section of the first flow chamber. The flow passage further forms a second flow chamber downstream of the first flow chamber, the second flow chamber being partly defined by the elastomeric tube, and the configuration being such that flow of fluid through the second flow chamber causes the tube to deflect inwardly and thus constrict the flow cross section of the second flow chamber. In one embodiment the arrangement is such that vortex flow is induced in each of the flow chambers.

Abstract: The invention is directed to a valve wherein the valve closure body includes two bracing elements lying in contact engagement with the inner wall surface of the wall casing of a conduit. The two bracing elements are disposed in spaced relationship to each other so that this spacing defines a squeeze zone at which a squeezing pressure can be applied. The squeeze zone has a length which corresponds approximately to the wall spacing within the sleeve. When the elastic wall casing of the conduit is squeezed in the squeeze zone, a portion of the casing deflects to allow passage of a fluid through the conduit.

Abstract: A device for adjustably restricting the flow of exhaust gases in a furnace flue to conserve fuel is disclosed. It comprises two interlocking pipe sections and a helical element having one end fixed to the inner surface of each pipe section. The helical element has a circular opening along its central axis. The degree of restriction provided by the device is adjusted by twisting or separating the two pipe sections.

Abstract: An adjustable air valve for steam radiators, comprising a cylindrical valve body of seamless brass having a predetermined outer diameter; an upper circular disc cap closing off the top end of said valve body; a lower circular disc cap closing off the lower end of said valve body; a frusto-conical vent wall portion defining a vent orifice of fixed diameter formed integrally within said valve body proximate to said upper cap; said orifice lying in a vertical plane disposed radially inwardly of the outer cylindrical envelope of said valve body; a U-shaped bi-metallic spring cantilevered from inner portions of said valve body opposite said vent orifice; an elastomeric sealing member having a flat circular sealing surface of diameter in excess of the diameter of said vent orifice; said spring being adapted to expand and to contract in response to temperature variations to move said sealing surface selectively into and out of seal contact with said orifice; a cylindrical band having a series of apertures of graduat

Abstract: Water heating methods and apparatus feed a combustible mixture of gas and air to an axial inlet of a cylindrical radiant surface burner and conduct water to be heated through a heat exchanger encompassing that cylindrical radiant surface burner as a cylindrical structure having first passages for combustion gases therethrough substantially radially of the cylindrical radiant surface burner and the heat exchanger.

Abstract: A lubricator for mixing lubricating oil in air under pressure has a damper serving as a variable restriction mechanism and a support by which the damper is supported, the damper and the support being integrally molded of a flexible material. The damper has a groove defined in the lower end thereof joined to the support. Since the damper and the support are of a unitary structure, their dimensional accuracy is increased and the height of the damper is not subject to variations. Because the damper is made highly flexible by the grooves for easy flexing displacement, the unwanted oscillation of the damper at the maximum air flow rate is avoided, and the damper can supply the lubricating oil at a rate substantially proportional to the air flow rate over the entire range from the minimum air flow rate to the maximum air flow rate. The damper is also improved in durability.