Abstract: An aerator including a faceplate for dispensing a first water stream, and a nozzle for dispensing a second water stream, the second water stream surrounded by the first water stream.

Abstract: A system and method for calibrating an irrigation system to account for variations in flow rates caused by field elevation changes, pipe friction losses, water emitter nozzle wear, pressure-regulator inaccuracies, and other factors. A calibration map is created to account for the flow rate variations and then consulted to control operation of the irrigation system.

Abstract: The utility model discloses a dual-purpose rotating spray gun for dust removal and cleaning, comprising a gun body (1), a trigger switch (2), a pot body assembly and a rotating spray apparatus, wherein the rotating spray apparatus comprises a bidirectional connector (3), a spray nozzle (4), a connecting sheath (7), a hollow rotating shaft (5), a rotating spray head (10), a spray pipe (9) and a cleaning solution suction pipe (13); one end of the bidirectional connector (3) is fixed to an air passage outlet of the gun body (1); the other end is fixed to the connecting sheath (7); the hollow rotating shaft (5) is arranged in the connecting sheath (7); the spray nozzle (4) is fixed to an outlet of the bidirectional connector (3); the spray head of the spray nozzle (4) is matched with the hollow rotating shaft (5); the rotating spray head (10) is fixed to the hollow rotating shaft (5) and is provided with a rotating spray track (18); the spray pipe (9) is fixed to the rotating spray track (18); an inlet of the spr

Abstract: A baffle plate assembly including a baffle plate, a ring and support members. The baffle plate has an outer diameter and configured to distribute gases through a showerhead of a showerhead assembly of a substrate processing system. The gases are received from a stem of the showerhead assembly. The ring has an inner diameter and configured to be disposed in a ring channel of the showerhead assembly. The inner diameter is greater than the outer diameter of the baffle plate. The support members extend from the baffle plate to the ring. The ring and the support members hold the baffle plate in a position between a top plate and a bottom plate of the showerhead.

Abstract: A flow-adjustable shower unit comprises a water path connector, a water outlet assembly, and a connecting base arranged between the water path connector and the water outlet assembly to make the water path connector communicate with the water outlet assembly; the connecting base is a cylindrical cavity, a fixed baffle transversely dividing the cavity of the connecting base is arranged in the connecting base, and a first through groove is formed in the fixed baffle in a penetrating mode; a movable baffle is further movably mounted on the connecting base and abuts against the fixed baffle, and a second through groove is formed in the position, corresponding to the first through groove, of the movable baffle; the overlapping area between the first through groove and the second through groove can be adjusted by adjusting the position of the movable baffle, and thus the flow of the connecting base is adjusted.

Abstract: A conformal, cup-shaped fluidic nozzle engineered to generate an oscillating spray is configured as a (e.g., 100, 400, 600 or 700). Preferably, the fluidic circuit's oscillation inducing geometry 710 is molded directly into the cup's interior wall surfaces and the one-piece fluidic cup may then fitted into an actuator (e.g., 340). The fluidic cup (e.g., 100, 400, 600 or 700) conforms to the actuator stem used in typical aerosol sprayers and trigger sprayers and so replaces the prior art “swirl cup” 70 that goes over the actuator stem (e.g., 320), With the fluidic cup (e.g., 100, 400, 600 or 700) and method of the present invention, vendors of liquid products and fluids sold in commercial aerosol sprayers 20 and trigger sprayers 800 can now provide very specifically tailored or customized sprays.

Abstract: A conformal, cup-shaped fluidic nozzle engineered to generate an oscillating spray is configured as a (e.g., 100, 400, 600 or 700). Preferably, the fluidic circuit's oscillation inducing geometry 710 is molded directly into the cup's interior wall surfaces and the one-piece fluidic cup may then fitted into an actuator (e.g., 340). The fluidic cup (e.g., 100, 400, 600 or 700) conforms to the actuator stem used in typical aerosol sprayers and trigger sprayers and so replaces the prior art “swirl cup” 70 that goes over the actuator stem (e.g., 320), With the fluidic cup (e.g., 100, 400, 600 or 700) and method of the present invention, vendors of liquid products and fluids sold in commercial aerosol sprayers 20 and trigger sprayers 800 can now provide very specifically tailored or customized sprays.

Abstract: A laminar flow jet for a surface mix gas burner that provides increased stability, adjustability, and control over flame chemistries and characteristics. The present invention utilizes a novel shape, typically created by a tube having a cross-sectional shape and inserting it into a faceplate cutout, or conduit, having another cross-sectional shape. This nesting of one shape inside another promotes laminar gas flow and produces desired effects. Tubes may also be placed under the faceplate provided they maintain fluid communication with the conduits. Further, a burner is constructed with adjacent gas delivery tubes of different cross-sectional shapes which are mechanically held in place radially. The tubes touch in a longitudinal direction at points along their respective inner and outer dimensions, achieving axial alignment and preserving the necessary laminar gas flow.

Abstract: In a fuel injection valve, a thin portion that is formed so as to make a downstream hollow in an upstream end surface of a first spraying aperture plate is disposed on the first spraying aperture plate. First spraying apertures that are disposed on the thin portion are perpendicular to the first spraying aperture plate. L/d of the first spraying apertures is less than 1, where L is axial length, and d is diameter. Second spraying apertures on a second spraying aperture plate are inclined relative to an axis that is perpendicular to the second spraying aperture plate. An aperture area of an outlet portion of the first spraying apertures is smaller than an aperture area of the inlet portion of the second spraying apertures. An entire outlet opening of the first spraying apertures is disposed inside an inlet opening of the second spraying apertures.

Abstract: A safe portable sprayer comprising a reservoir for storing clean water that can be carried on the back or attached the shoulders, including a large nozzle on the upper face thereof, a small nozzle with a water pump adapted thereto, and a small neck that is provided with a cap. The cap is screwed on the nozzle, and includes a recipient that fits into the nozzle. The cap is provided with vertical holes that pass through a channel. The holes are provided with inner threads for receiving corresponding valves having lower tapered ends. Inside the recipient, flexible containers of chemicals are attached to the holes; the containers are kept immersed and compressed by water inside the recipient from the pump, such that the pressure generated by the water impels the water and chemical toward the channel of the cap, and to the spraying gun through the pipe.

Abstract: Safe handling spraying device, which comprises a reservoir where is assembled an actuating lever or, manually or automatically actuating air pumps, that perform the internal reservoir pressurization. Inside of it, there is a pressure chamber where is stored water and the Chemical Concentrated product that is inside a pliable tightly closed bag. The reservoir (10) is designed for supplying water (Ag), the chemical concentrated product (CCP) is stored separately in a pliable container (12). The pliable container (12) is disposed inside of a pressure chamber or water reservoir (10), so that the same pressure defined inside the reservoir (10) is applied to the pliable container (12) simultaneously. The output end of the pliable container (12) is connected to the inlet of a mixing device (20) which doses the CCP continuously. After the CCP had been mixed with water, it communicates with a hose provided with an actuating trigger (30) and spraying nozzle (27) at the free end.

Abstract: The dispenser draws a concentrate fluid from a liquid container into an input fluid. There is an elongated channel having an input for the input fluid and dispensing nozzle at an exit end for dispensing the concentrate fluid in a diluted form. A transverse intersecting channel is intermediate the input end and the exit end. An insert is moveable in the transverse intersecting channel, apertures of the moveable insert being alignable with apertures in the transverse intersecting channel and the liquid container. The channels from the liquid container will have a plurality of various sized apertures to provide for the flow of differing amounts of concentrate fluid into the input fluid. By adjusting the moveable insert in the transverse intersecting channel and/or the input fluid flow rate the concentration of concentrate fluid in the input fluid is changed.

Abstract: A dual input valve includes a valve stem having an air valve that includes a captured o-ring held in a circumferential groove. A catalyst valve ball abuts the valve stem. A housing has a catalyst input port in fluid communication with a catalyst valve seat, an air input port in fluid communication with a air valve seat, a mixing area in fluid communication with the catalyst valve seat and the air valve seat, and an output port in fluid connection with the mixing area. A spring urges the catalyst valve ball, and hence, the valve stem towards a closed position in which the air valve seats against the air valve seat blocking flow of a air from the air input port into the mixing chamber and the catalyst valve ball seats against the catalyst valve seat blocking flow of catalyst from the catalyst input port into the mixing chamber.

Abstract: Embodiments of a spray gun incorporating a needle for applying multiple component materials are provided. In accordance with certain embodiments, the spray gun includes a fluid delivery tip assembly comprising an inner passage, a hollow needle disposed within the inner passage of the fluid delivery tip assembly, wherein the hollow needle comprises at least two indentions along an outer circumferential surface of the hollow needle near an end of the hollow needle, a first passage configured to deliver a first spray fluid to a fluid tip exit of the fluid delivery tip assembly, wherein the first passage is defined by a volume between the fluid delivery tip assembly and the hollow needle, and a second passage through the hollow needle, wherein the second passage is configured to deliver a second spray fluid to the fluid tip exit of the fluid delivery tip assembly.

Abstract: An atomizing cutting fluid system. The system includes a common chamber terminating in a shaped droplet nozzle and including a nozzle section immediately behind the shaped droplet nozzle. An atomizer creates spray directly within the common chamber behind the nozzle section. A cutting fluid supply line provides cutting fluid to the atomizer. A high velocity gas nozzle within the nozzle section and behind the droplet nozzle is configured to provide a high velocity gas to entrain the flow of droplets. The nozzle section and droplet nozzle are configured to produce a fully developed droplets-gas flow at a predetermined distance from the droplet nozzle. In a cutting system, the spray system provides a uniform film for a macro or micro cutting operation at sufficient flow rates.

Abstract: A discharge apparatus for discharging a product having compressed gas support comprises a container (1) having a discharge opening (12) and a pressure element (2), which is mounted displaceably in the container (1). A counterpressure element (13) is provided on the container (1) and is used to advance the pressure element (2) into the container in order to absorb a developing counterpressure when pressure is applied onto the pressure element (2). A compressed gas device (5, 7, 8) dispenses compressed gas in the region of the discharge opening (12), and comprises a valve (6) and a valve actuating device (14) to control the compressed gas dispensing. The actuating device (14) is provided on the counterpressure element (13) to ensure that when discharging the product from the container, at the same time the compressed gas device can be actuated by applying pressure onto the pressure element, whereby compressed gas exits the discharge opening at the same time as the fluid product.

Abstract: A hand-held paint spray gun apparatus having a paint reservoir on the gun and reciprocating piston driven by a motor in the hand-held paint spray gun, the gun having a multiple orifice spray tip with a pair of apertures emitting generally fan or cone shaped overlapping spray patterns. A locking nut retains the cylinder to a motor frame and a frame carries the spray tip, with one of the nut and frame having a corrugated surface and the other of the locking nut and the spray tip frame having a plurality of protrusions engaging the corrugated surface. The protrusions are spaced apart circumferentially from each other and with respect to the spacing of a plurality of troughs and crests in the corrugated surface such that only one protrusion at a time is nested in a trough of the corrugated surface.

Abstract: A nozzle system for use with a multi-flavor beverage dispenser includes a mixing chamber having a fluid outlet therefrom; a diluent injector configured to deliver a mixing fluid from without to within the mixing chamber; and a number of concentrate injectors configured to independently deliver a fluid concentrate from without to within the mixing chamber. The concentrate injector each have associated therewith a self-sealing dispensing valve configured to substantially limit fluid flow through its respective concentrate injector to from without the mixing chamber to within the mixing chamber.

Abstract: Embodiments of a spray gun incorporating a needle for applying multiple component materials are provided. In accordance with certain embodiments, the spray gun includes a fluid delivery tip assembly comprising an inner passage, a hollow needle disposed within the inner passage of the fluid delivery tip assembly, wherein the hollow needle comprises at least two indentions along an outer circumferential surface of the hollow needle near an end of the hollow needle, a first passage configured to deliver a first spray fluid to a fluid tip exit of the fluid delivery tip assembly, wherein the first passage is defined by a volume between the fluid delivery tip assembly and the hollow needle, and a second passage through the hollow needle, wherein the second passage is configured to deliver a second spray fluid to the fluid tip exit of the fluid delivery tip assembly.

Abstract: A multiple-line irrigation system includes a plurality of spans extending from a central pivot, a first pipeline for carrying water, and a second pipeline for carrying chemicals. Each span includes a distribution assembly which draws water and chemicals from the first and second pipelines independently of distribution assemblies in the other spans so as to distribute the water and chemicals as a mixture onto a field according to the requirements of the field under each span. Auxiliary lines coupled to the pipelines in the distribution assembly in each span include valves to regulate the supply of water and chemicals from the pipelines.

Abstract: Prepping a surface entails entraining a coating particle into a fluid stream, directing the fluid stream containing the coating particle at the surface to be prepped to thereby prep the surface using the coating particle. The prepped surface can then be coated using the same or substantially similar coating particle. This technique can be used with a continuous airjet, a forced pulsed airjet, a continuous waterjet or a forced pulsed waterjet as the carrier stream. This invention solves the problem of foreign blasting particles becoming embedded in the atomic matrix of the surface to be prepped, which can result in unpredictable behavior of the surface properties and even catastrophic failure.

Abstract: A system and method are provided for selectively containing and dispensing a predetermined liquid material in and from a source container in failsafe manner, wherein a housing is disposed to receive a pressurized fluid stream, and a selectively operable valve assembly is disposed in a flow path defined in the housing. The housing includes an inlet, an outlet, and an intermediate portion extending therebetween, which is formed with an admission port for admitting the predetermined liquid material. The valve assembly is disposed between the housing's inlet and outlet, and may be selectively operated to alternatively open and close access of the predetermined liquid material into the housing. The valve assembly is operably actuated responsive at least in part to the pressurized fluid stream in the flow path, whereby admission of the predetermined liquid material into said housing is keyed by introduction of the pressurized fluid stream into the flow path.

Abstract: In the present invention, a new air-pressure utilizing water-saving shower head which takes in external air to increase the spray pressure is introduced. According to the present invention, this water-saving shower head comprises, a holding space for water inside, a body that contains an air hole at the bottom to take in the external air, the internal cross-sectional areas decreasing and then increasing, an air intake hole connecting into the air hole of the upper body, a pressure applying unit which mixes the external air coming through the air hole with the novelty of the pressure of the water flow movement, positioned at the front side of upper body and consists of an extended spray tube with multiple spray boards protruding outward.

Abstract: A shower head is configured to receive a first fluid conduit and a second fluid conduit, where the shower head includes a mixer valve within a portion thereof that is configured to receive a first fluid from the first fluid conduit and a second fluid from the second fluid conduit and to output the first fluid or the second fluid or a blend the first and second fluids to a shower head outlet.

Abstract: A plural component mixing system includes an automatic balance feature to balance the pressure of two or more components as they are mixed. The pressures or flow rates of the two components are monitored. If there is a difference in pressure or flow rate greater than a specified amount, a bleed valve is opened for a short period of time to balance the flows. A computer with a touch screen is used to set the pressure and flow rate differences that trigger the bleed, and to set the time period for the bleed.

Abstract: Embodiments of the present disclosure provide for spraying systems, methods of disposing a layer of matrix onto a sample, and the like.

Abstract: A spraying assembly is provided. The spraying assembly includes at least one nozzle for liquid that is to be sprayed, and at least one active substance injector which is situated directly upstream from the at least one nozzle and to which liquid to be sprayed is supplied by a pump or a pressurized reservoir, with interposition of an obturator on a conduit connecting the pump or the pressurized reservoir to the injector. The spraying assembly also includes an outlet valve for each injector designed to close each outlet orifice. The present invention avoids overdosing or underdosing of the product that is to be sprayed as active substance.

Abstract: A fluid jet system providing a hydraulic induction manifold for at least two valves. The manifold is positioned “upstream” of an abrasives holding tank, so that no abrasive material flows through the valves and the manifold. The valves and the manifold provide pressurized fluid for at least two different flows: (1) a primary fluid flow and (2) an abrasive material flow through the abrasives holding tank. The two flows are merged again at a junction to provide a fluid flow having a predetermined abrasive-to-fluid mixture ratio. The manifold balances the pressure of the two different flows using a preset geometric relationship between the two different output flow paths associated with the valves.

Abstract: A hose end dispenser for dispensing a carrier fluid and an aspiration fluid. The dispenser includes a body including a carrier fluid inlet and an aspiration fluid inlet. The dispenser includes a nozzle configured for dispensing the carrier fluid and the aspiration fluid. A valve includes a valve member and a valve housing. The valve member is rotatable in the valve housing about the axis of rotation for moving the valve member between an open position in which the valve member permits flow of carrier fluid through the valve member and a closed position in which the valve member blocks flow of carrier fluid through the valve member.

Abstract: In a device for spraying on pigmented liquids by means of an air flow comprising a base body, a spray nozzle disposed at the front side of the base body, said spray nozzle having a needle acted upon by a spring disposed in the center thereof, a compressed air inlet and an adjacent compressed air duct, an inlet for a pigmented liquid, with a controllable compressed air flow supplied via the compressed air duct being guided past an inlet for the pigmented liquid where it is loaded with droplets of liquid, said droplets of liquid being discharged by the spray nozzle as long as the compressed air flow is maintained, it is provided that the nozzle (5) and the needle (12) are positioned in a nozzle carrier (10), with the nozzle carrier (10) being provided with the inlet (17) for the pigmented liquid, and with the nozzle carrier being removable or replaceable, respectively, as a whole.

Abstract: One embodiment includes a dispenser device and container for mixing a chemical concentrate and a diluent to produce a diluted mixture. The dispenser device may include a housing, a slide, and an eductor. The container holds the chemical concentrate. The dispenser device communicates with the chemical concentrate and with the diluent.

Abstract: A system includes a gasification fuel injector. The gasification fuel injector includes a mixing device configured to mix together at least two of a solid stream, a liquid stream, or a gaseous stream, or a combination thereof, to generate a mixture. The mixing device is disposed upstream of a tip portion of the gasification fuel injector, and the mixture is discharged from the tip portion.

Abstract: A system and method are provided for selectively containing and dispensing a predetermined liquid material in and from a source container in failsafe manner, wherein a housing is disposed to receive a pressurized fluid stream, and a selectively operable valve assembly is disposed in a flow path defined in the housing. The housing includes an inlet, an outlet, and an intermediate portion extending therebetween, which is formed with an admission port for admitting the predetermined liquid material. The valve assembly is disposed between the housing's inlet and outlet, and may be selectively operated to alternatively open and close access of the predetermined liquid material into the housing. The valve assembly is operably actuated responsive at least in part to the pressurized fluid stream in the flow path, whereby admission of the predetermined liquid material into said housing is keyed by introduction of the pressurized fluid stream into the flow path.

Abstract: A chemical dispensing apparatus includes a housing that is connectable to a source of water, such as a standard garden house, and an internal space in which is disposed a rotatable container containing a quantity of chemical concentrate to be mixed with the source of water as it flows through the housing and is dispensed from the housing from a sprinkler head or misting nozzle. The flow of water through the housing powers a water turbine which is connected to the rotatable container, such that the container is rotated as water flows through the housing. In an alternative embodiment, the water turbine is replaced with an electric motor. Rotation of the container cause the chemical concentrate to dissolve which is then mixed with the water before it is dispensed through the sprinkler or mister.

Abstract: A fire suppression apparatus and method of generating foam are provided in which a foam-forming liquid is introduced under high velocity and pressure into a mixing manifold through a plurality of jets, and a non-combustible gas is introduced under high velocity and pressure into the center of the mixing manifold, downstream of the jets and in the direction of flow of the foam-forming liquid. The foam generated in the mixing manifold is discharged through a hose and nozzle connected to the mixing manifold. The apparatus may be a self-contained unit, supported on a frame, with its own supply of foam-forming liquid and non-combustible gas.

Abstract: A compressed air throttle apparatus has at least one throttle valve adjusted by an electric motor, and an electric circuit fitted with contacting elements to alternatively interrupt and close the electric circuit in relation to the throttle valve settings. This throttle apparatus preferably is applicable to a compressed air path of powder spraycoating equipment.

Abstract: A dual fuel system includes a dual fuel injector that has disposed therein a gaseous nozzle chamber fluidly connected to a gaseous fuel inlet, and a liquid nozzle chamber fluidly connected to the liquid fuel inlet. The dual fuel injector also includes a hydraulic lock seal with an annular volume of liquid fuel surrounding a guide segment of a gas needle valve member for inhibiting migration of gaseous fuel into the liquid fuel. A liquid fuel common rail is fluidly connected to a liquid fuel inlet. A check valve is fluidly positioned between the gaseous fuel common rail and the gaseous nozzle chamber of the dual fuel injector for blocking liquid fuel leaked into a gaseous nozzle chamber through the hydraulic lock seal from entering the gaseous fuel common rail.

Abstract: Fuel injectors are disclosed that are capable of simultaneously delivering liquid and gaseous fuels to the combustion chamber of a compression ignition engine. For example, fuel injectors are disclosed that can deliver liquid diesel fuel, as a pilot liquid, along with a gaseous fuel, such as natural gas or other available fuels that are gases at atmospheric pressure and ambient temperature. The fuels are delivered to the needle control valve cavity sequentially via separate passageways. The delivery of the pressurized liquid fuel is actuated by the single actuator that is provided for each fuel injector. The actuator may be of a solenoid type or of a piezoelectric type or other suitable actuator as will be apparent to those skilled in the art. A liquid fuel check valve, in combination with the actuator, controls the delivery of the pilot liquid fuel to the needle control valve cavity.

Abstract: Method of spraying a pulverulent material into a carrier gas, comprising the acceleration of the carrier gas under pressure up to a sonic velocity before an expansion enabling the pulverulent material to be entrained, with formation of a constant stream of carrier gas entraining an adjustable predetermined amount of pulverulent materials, and safety device for spraying pulverulent material into a carrier gas.

Abstract: A paint sprayer includes a motor-driven multi-stage turbine for compressing air, which subsequently flows through a venturi in a paint gun to draw in paint or some other liquid from a canister. To prevent the high-pressure air from expelling lubricant from the motor's inboard bearing, a pressure responsive annular seal axially deflects and sealingly engages an axial face of the bearing. To avoid subjecting the seal and bearing to excess air pressure and temperature created by the turbine, a bypass bleed line diverts some air to atmosphere when the paint gun is closed.

Abstract: A dispensing device dispenses at least two different preparations substantially simultaneously. The device has a delivery element to deliver a first preparation from a package to its surrounding environment when an actuating element, in at least one embodiment a trigger connected to a pump, is actuated. The dispensing device has a connection line between the delivery element and at least one portion cartridge for a second preparation. The portion cartridge is detachably coupled to the dispensing device such that as the actuating element is actuated, the first and second preparations can be simultaneously dispensed.

Abstract: This invention is directed to a spray device for spraying two or more components. The two or more components are maintained separated in the spray device and are mixed post atomization. This invention is also directed to a gravity fed spray gun and a system for spraying two or more components. This invention is further directed to a kit for converting an existing conventional single-component spray gun typically used for spraying a single component to a two-component spray gun for spraying two components.

Abstract: A perfume bottle spray head assembly is disclosed to include a nozzle head, a lock cap, a receptacle, a plug, a dip tube, an outer cap and a rotary shut-off control plate. The nozzle head has passage means defined therein to facilitate mixing of liquid perfume with compressed air for enabling well-mixed liquid perfume and compressed air mixture to be sprayed out in a mist. The rotary shut-off control plate is operable to rotate the plug in the receptacle between a close position to shut off the liquid perfume passage and an open position to open the liquid perfume passage.

Abstract: A hand-held dispenser for precisely controlling the flow rate of water therethrough and for precisely injecting a liquid chemical into the water passing through the apparatus. The dispenser is also capable of dispensing a water-only rinse spray.

Abstract: A water delivery system is disclosed. The water delivery system may have an electronic user interface. The electronic user interface may be a portable device. The electronic user interface may include inputs to select water temperature, water flow rates, water flow patterns, and/or task based presets. A mixing valve for use with either manual faucets or electronic faucets is disclosed.

Abstract: A hand holdable applicator for delivering solutions and materials in a pressurized fluid system. Additives of solutions or materials are contained in replaceable, collapsible cartridges or liners, responsive and compressible to external fluid pressure regulated by the operator. Upon compression, additives combine with variably controlled fluid ingress and are mixed before dispersing through a nozzle having varying spraying configurations. The applicator may hold a plurality of cartridges, and additives may be administered separately or in combination.

Abstract: A nozzle is provided and includes a circuit by which fuel is delivered to a nozzle part and a valve, interposed between the circuit and the nozzle part and upon which the fuel impinges, an opening and closing of the valve being passively responsive to a fuel pressure in the circuit such that the valve thereby modulates a size of an area through which a corresponding quantity of the fuel flows from the circuit to the nozzle part.

Abstract: A pull-out wand is disclosed for use with a water delivery device. The pull-out wand may include one or more sensors, such as a touch sensor and/or a proximity sensor.

Abstract: A system includes a portable liquid container having at least two chambers for containing at least two liquids separate and an apparatus having at least two separate input tubes configured for drawing liquid from the chambers. At least two separate output tubes are configured for passing at least two separate liquids to a user's mouth. A valve assembly includes a lower portion having at least two input connectors each joined to a one of the input tubes. An upper portion has at least two output connectors each joined to a one of the output tubes. An adjustable valve portion determines proportions of liquids in the separate chambers that are passed to the user's mouth where the liquids remain separate until reaching the user's mouth, and where liquids drawn back down the input tubes and the output tubes into the chambers remain substantially separated.

Abstract: A variably tensionable check valve with a first end and a second end that includes a housing, a tension adjuster, a resiliently deformable elastic member, and a flow restriction member biased in a closed position. The housing includes a first portion, a second portion, and first and second passageways with a transition portion therebetween. The second portion includes at least one peripherally extending raised rib and a second internal passageway. The surface area of a cross-section of the first internal passageway is greater than the surface area of a cross-section of the second internal passageway. The tension adjuster, the elastic member, and the flow restriction member are located within the first internal passageway, wherein the tension adjuster secures the elastic member and the flow restriction member within the first internal passageway, and wherein rotational movement of the tension adjuster modifies the biasing force of the elastic member.