Abstract: The present invention relates to a mixer valve for hot and cold water with two independent controls for the two types of water to be delivered, having a fixed plate (23) with at least a first slit (24) for the inlet of hot water and at least a second slit (25) for the inlet of cold water, and on said fixed plate (23) a first rotating disk (26) in correspondence to the first slit (24) and a second rotating disk (27) in correspendence to the second slit (25), each disk (26, 27) having at least one slit (26a, 27a) positionable in correspondence to and away from the respective slit (24, 25) of said fixed plate (23) following the rotation of the disks through a control element (19, 20) in the cartridge-type body (10).

Abstract: The temperature or some other specific characteristic of a mixture of two liquids at different temperatures in a mixing chamber (14) is controlled by a microprocessor (8) which controls the supply of power to solenoid actuated valves (10 and 11) to control the quantities of the liquids admitted to the chamber (14) so that a desired temperature of the mixture is achieved using pulse width modulation control. The pulse width modulation control requires only one microprocessor timer and provides a substantially constant supply of power to one valve while varying the power supplied to the other valve to control flow through each valve and thus the temperature of the liquid mixture.

Abstract: A slide-valve manifold useful for attachment to a catheter and a syringe is disclosed. The slide-valve construction of the manifold tolerates high-pressure fluid without significant leakage. The manifold may contain a single slide element or multiple slide elements.

Abstract: A remote controlled faucet has a valve assembly attachable to a nozzle of the faucet. The valve assembly includes a battery-powered motor-driven valve member and a radio receiving unit for actuating the motor in response to signals received from a remote sending unit. The sending unit is operated by the action of the user's foot for providing "hands-free" control of the faucet. In an alternate embodiment, the valve assembly is used to remotely control an independent hot and cold water faucet supply line to regulate water temperature and pressure.

Abstract: An apparatus for a liquid and pressurized gas includes a gas inlet hose for conducting the pressurized gas therethrough, a liquid inlet hose, extending through the interior of the gas inlet hose, for conducting the liquid therethrough, a hose separator connected to an end of the gas and liquid inlet hoses, a gas outlet hose connected through the hose separator so as to be in fluid communication with the gas inlet hose for further conducting the pressurized gas therethrough, a liquid outlet hose, separate from the gas outlet hose, connected through the hose separator so as to be in fluid communication with the liquid inlet hose for further conducting the liquid therethrough, and a main outlet hose connected to and in fluid communication with the liquid outlet hose and the gas outlet hose. The apparatus further includes a first valve positioned within the liquid outlet hose to regulate flow therethrough and a second valve positioned within the gas outlet hose to regulate flow therethrough.

Abstract: A sanitary mixing unit, especially in the form of a single thermostat, has a cold and hot water inlet and a mixed water outlet. Valves for shutting off and controlling the water flow are arranged before the thermostat control and thus before the mixing chamber in the direction of flow. The valves are simultaneously activatable by a spindle. The movable valve closing members are fine adjustable independent from one another relative to the respective valve seats for a secure shut-off. An automatic fine adjustment of the movable valve closing members during shut-off of the mixing unit is provided by employing a central spindle with a fixedly arranged toothed wheel at its end section facing the valves. The toothed wheel engages two spur gears which are cooperating via a slip coupling with two single spindles of the valves.

Abstract: A device (10) for dispensing water from at least one delivery outlet (25) has a first tap device (19) for manually controlling the delivery from the outlet (25) of fluid flowing from a first source (22) and a second tap device (13) for manually controlling the delivery from the outlet (25) of fluid flowing from a second source (15, 16). At least the first tap device (19) is operatively connected to a cutoff device (30, 31, 32, 33, 402) for inhibiting delivery of fluid from the second source (15) when the first tap device (19) is operated to deliver fluid from the first source (22).

Abstract: A matrix of valves being formed using a sandwich of three layers with a pliable membrane interposed between two of the layers. Supply channels and delivery channels are created through etching, routing, or other such means on the middle layer. Each supply channel communicates with all of the delivery channels via a valve location which is opened or closed by pneumatic pressure on the pliable membrane. Movement of the pliable membrane is affected through suction or pressure as communicated via holes in the overlying layer. In this manner, selected supply and delivery lines are connected by appropriate suction being placed on the membrane. Selected valves are simultaneously opened to provide parallel operations.

Abstract: A foot-actuated valve assembly operable for delivering either a mixture of hot and cold water through a faucet, or solely cold water to the faucet. The user selectively actuates one of two sides of a kick plate. Actuation of one side of the kick plate causes a mixture of hot and cold water to flow through the faucet. Actuation of the other side of the kick plate causes only cold water to flow through the faucet.

Abstract: A multiple inlet manifold for mixing and transporting therethrough fluids under pressure comprising a manifold body including a plurality of valve inlets and a single outlet, a mixing chamber provided between the valve inlets and the outlet, and a flexible membrane disposed between the valve inlets and the outlet to retain the valve inlets normally closed at selected levels of fluid pressure. Fluid flow under pressure opens a valve inlet to enable fluid flow into the mixing chamber.

Abstract: A flow control device in which flow channels converge in a housing containing an injection site and a pre-biased flow control diaphragm. The injection site may include a diaphragm. The diaphragm can be acted upon by an internal actuator or plunger that extends into one of the flow channels where the plunger can be engaged by an external member such as a Luer fitting. The actuator or plunger may be of rigid or flexible construction is at the entry position of an intermediate channel and extends to an output channel of the injection site.

Abstract: A plate structure including conduit and reagent delivery means for a fluid delivery system is provided to deliver precise volumes of a plurality of fluids in sequence to a treatment reservoir. Fluid channels are formed in the plate structure to provide a means for delivering fluids from a plurality of fluid reservoirs attached to the plate structure to one or a plurality of treatment reservoirs attached to the plate structure. Each fluid is delivered by a system comprising a check valve in fluid communication with a fluid reservoirs, a positive displacement pump in fluid communication with the check valve and an injector in fluid communication with the positive displacement pump all of which are attached to the plate structure. A partition switch attached to the plate structure is provided to direct fluid to the desired treatment reservoirs or pressure reservoirs.

Abstract: Apparatus is disclosed herein for extracting a flavor from a natural leaf, powder of the like, such as tea leaves into a heated substance as a carrier such as a quantity of water. The apparatus employs a container with a heater for the water which will controllably bring the water to a boil. A tank is submerged in the water and includes a perforated strainer holding a quantity of loose tea leaves for wetting by the surrounding water. A dispensing nozzle is included, having a supply line from the water and a second supply line from the tea leaf tank. A valve arrangement selectively combines the supply lines to produce a desired flavor strength of the dispensed flavored liquid. A manually operable valve selectively intercommunicates the boiled water with the tea leaf tank and controls regulate the heater and temperature.

Abstract: A meter bypass swivel connector is molded with a 1/4" hole located within its upper body portion. A ball check screen or guard separates its upper body portion from its lower body portion to prevent anything from obstructing the customer's service line. A ball check assembly, including a ball, seat, and base, is snapped or screwed into the lower portion of the meter bypass swivel connector. The ball check is configured to allow an uninterrupted or unobstructed flow of gas through the customer's line with pressure as low as 5" of water column. The lower body portion is surrounded by a flange and a swivel nut rests on a metal backup ring disposed on the flange. A swivel gasket installed in the field "seals" the meter bypass swivel connector to the gas meter when the meter nut is tightened to the meter. A one-way coupler is attached in the hole in the meter bypass swivel connector in such a manner that the possibility of a gas leak would be minimal or impossible.

Abstract: A three-way valve includes a cylindrical auxiliary valve shaft (12); a main valve shaft (11) provided within the cylindrical shaft; a cylindrical auxiliary valve plug (10) provided on a tip of the auxiliary valve shaft; a main valve plug (9) provided on a tip of the main valve shaft; a valve body (6); a first port (3) formed in the valve body in a direction of traveling of the main valve shaft; a main valve seat (1) formed around the first port for receiving the main valve plug, the main valve seat and the main valve plug constituting a main valve; an annular auxiliary valve seat (2) for receiving the auxiliary valve plug, the auxiliary valve seat and the auxiliary valve plug constituting an auxiliary valve; a common passage (13) formed between a contact area of the main valve plug with the main valve seat and a contact area of the auxiliary valve plug with the auxiliary seat; a second port (4) formed in the valve body for communicating with the first port via the common passage; a passage (14) formed outside

Abstract: An electrically operated plural inlet-single outlet plastic mixing valve having common dual valve operator assemblies separately supplying valve flow to an outlet manifold to which the operator assemblies are attached by non-metallic weldment. In one embodiment the manifold has plural inlets oppositely connected to a common outlet such that the valve operators are oppositely disposed. The inlets may be rotationally oriented as desired at weldment with respect to each other and the manifold outlet. In a second embodiment the valve operators are disposed in spaced aligned arrangement.

Abstract: A pneumatically controlled valve system is provided featuring simplified modular construction, reduction of moving parts, improved control of valve operation and increased resistance to corrosive effects of transfer fluid used with the valve. In this invention a 3-way valve system is described which has a valve body constructed of modules of polyvinylidene fluoride polymer (PVDF) removably and operably attached to each other in such a way as to removably contain and retain double diaphragm sliding valve stem assembly of known design which removably seals a fluorocarbon polymer (PTFE) stem to the PVDF seat integral to the valve body to close and open the valve fluid inlet ports and sealingly separates the pneumatic pressurizing gas from the transfer fluid.

Abstract: A faucet having a single piece underbody comprising a unitary injection-molded structure is provided. A tubular waterway within the faucet underbody provides a leakproof path for water through the faucet to an outlet. Further, an injection molding procedure in which a tubular waterway is formed and in turn placed into a second mold, whereupon a second injection-molding is made, is provided. The procedure allows the formation of a unitary faucet underbody resistant to leakage and conducive to quick and inexpensive installation and replacement.

Abstract: A water faucet structure comprising a hollow housing having hot and cold water inlets and a water outlet, a pair of setting valves therein, and a spout tube with one end connected to the water outlet and the other end thereof containing an egress valve. The hot and cold water inlets are in communication with a mixing chamber formed within the housing via respective setting valves wherein hot and cold water are combined in predetermined proportions before issuing from the spout tube. Each setting valve comprises a valve body having a stem and a piston, a sliding element slidingly secured to a fixed retaining element, and a rotatable positioning element threadedly engaged with one end of the sliding element. The valve stem is slidingly positioned within an axial cavity on an opposite end of the sliding element with the valve piston urged against a corresponding valve seat formed within the housing by a spring.

Abstract: A flow control device in which a plurality of flow channels converge in a two-part housing containing a free-floating and pre-biased flow control diaphragm and an injection site. The free-floating diaphragm is at the entry position of an intermediate channel which extends to an output channel of the injection site. The control diaphragm is pre-biased by a prong which extends from a base portion of the two-part housing.

Abstract: The present invention relates to hot and cold mixer valves which have cartridge type bodies and valvular means made up of overlapping ceramic disks in which flows of cold and hot water is controlled by the valvular means with independent controls, that is to say with two separate control levers, one for hot water and one for cold water.

Abstract: A fuel injection assembly for an internal combustion engine comprises a pair of solenoid valves mounted on a common manifold defining a fuel supply passage which is filled with pressurized fuel at all times during operation of the engine. The solenoid valves discharge into a common chamber having a spray nozzle located at the downstream end thereof. No valve is located between the solenoid valves and the discharge end of the spray nozzle. In use, when the solenoid valves are open, the pressure drop across the solenoid valves is small with substantially the entire pressure drop associated with the assembly occurring across the nozzle. Accordingly a relatively low hold current is required by the solenoid valves.

Abstract: The present invention is directed to bleed air systems which derive air from a compressor. In one embodiment of the present invention, a compressor including three bleed ports is connected in a predetermined manner to a bleed air output connector through three controllable shutoff valves and two check valves. More particularly, the bleed air port connected to the highest pressure compressor stage is connected to the output connector through all three of the shutoff valves. The bleed air port connected to the second highest pressure compressor stage is connected to the output connector through one of the check valves and the second and third shutoff valves. Finally, the bleed air port connected to the lowest pressure compressor stage is connected to the output connector through the second check valve and the third shutoff valve.

Abstract: A water supply installation such as a mixing valve (11) has a cold supply (13) and a hot supply (12). An outlet (14) is controlled by a valve (15) and in order that the temperature of the installation (11) can be raised after closure of the valve (15), means, such as an isolating solenoid valve (20) is provided which isolates the cold supply (13) from the body of the installation so that the body of the installation is supplied only with hot water after switching off, the rise in temperature being effective to prevent and or discourage growth of dangerous bacteria.

Abstract: Device for preventing water hammer while regulating water pressure includes valve element biasing means which substantially consists of a pressure adjusting spring with a small spring constant and a water hammer preventing spring with a large spring constant which are disposed in series in a valve casing. The valve element biasing means is capable of varying the opening area of a communicating passage between an upstream passage and a downstream passage to as to adjust the pressure in the communicating passage while preventing the occurrence of water hammer in piping water supply equipment.

Abstract: A multiline check valve assembly has an elongated body which defines a fluid passageway and which is formed with a plurality of valve cavities that are in fluid communication with the fluid passageway. Each valve cavity has a resilient valve element disposed within the cavity and each valve element rests in the cavity with one end against a protrusion disposed in the cavity for centering the element within the cavity. The resilient valve element is biased to urge its other end against a valve seat that surrounds an opening to the valve cavity to create a fluid tight seal with the valve seat and close the opening. In addition, an access port is formed circumferentially around both the valve seat and opening to establish a fluid communication path through the access port to the fluid passageway in the body when the valve element is separated from the valve seat.

Abstract: An improved multiple stream, fluid mixing and dispensing apparatus for automatically regulating flow rate and temperature for one or more preset fluid flows for connection to domestic water delivery systems including a plural station, fluid flow rate and temperature control console adapted for cooperating with the standing hydraulic pressure of a dual temperature fluid supply means with a variable effluent flow rate regulator interposed in each of the main supply conduits and associated controller means for presetting the flow rate through each regulator and determining both the degree of mixing and the incidence of fluid flow to be provided from each supply conduit to the exit conduit.

Abstract: In a gas mixing apparatus for the generation of a continuous stream of a gas mixture a carrier gas line is in communication with a collector to which a carrier gas supply line and component gas supply lines are connected of which each includes a mass flow regulator and a three-way valve with an output in communication with the collector and a first inlet connected to the respective mass flow regulator and a second input in communication with the carrier gas supply line. The second inputs to the three-way valves are always open so that carrier gas is always permitted to flow through the valves for rapid response to flow changes through the valves first inlet.

Abstract: Apparatus for use in an automated liquid combination and transport system including one or more injectors for injecting liquid additives from various reservoirs into a primary liquid, including a frame having a front, a back and opposing sides. The frame has support columns for supporting the injectors on it. A tank connected to the frame is connected to a tubular input manifold mounted on the frame for carrying the primary liquid and liquid additives into the tank. The input manifold has a plurality of inlets spaced axially of the manifold which may be connected to the injectors which inject liquid additives from the reservoirs into the input manifold through its inlets. The input manifold extends generally side-to-side of the frame and is disposed with its inlets facing generally forwardly with respect to the frame so that its inlets are accessible from the front of the frame.

Abstract: The faucet assembly of this invention has the usual water inlet and outlet lines. The novel portion of the faucet assembly is the visibly clear water conduits or tubes that are attached to the handles of the faucet assembly. These visibly clear tubes are in water flow connection with both the water inlet and outlet lines and therefore provide a way to determine most water flow problems in the assembly. In addition, these visibly clear tubes are aesthetically pleasing.

Abstract: A beverage dispensing apparatus includes a beverage dispensing head wherein a rigid plate is disposed over a mixing fluid valve stem and a plurality of base fluid valve stems. The plate has an opening located over each base fluid valve stem for receiving the associated base fluid valve stem therethrough. The plate has a rigid surface disposed over the mixing fluid valve stem. A mixing fluid button contacts the rigid surface of the plate so that, when the mixing fluid button is depressed, only the mixing fluid is dispensed. A first base fluid button covers the opening in the plate disposed over its associated base fluid valve stem. The first base fluid button also contacts the plate so that, when the button is depressed, the button depresses both the base fluid valve stem and the plate. The plate, in turn, depresses the mixing fluid valve stem.

Abstract: A gas mixing device of a blood gas analyzer has a substrate made of a material such as silicon and a plate having a flat smooth surface, made of a material such as glass. The plate is bonded to the substrate. The substrate has a plurality of fine elongated grooves extending between inlet and outlet ports formed in the plate. Different gases are introduced through the respective inlet ports, and combined with each other in the gas mixing device. The levels of flow resistance in branch grooves are so determined that the different gases are mixed at predetermined mixing ratios for delivery to the outlet ports. Further, the analyzer includes the gas mixing device and a measuring unit equipped with a plurality of gas measuring electrodes. The mixture gas from the gas mixing device is made to bubble through a buffer solution in a reservoir for producing a standard liquid measuring unit that is delivered at predetermined time intervals to the analyzer for calibration.

Abstract: A tap includes a seat, two valves disposed on both ends of the seat, an outlet pipe rotatably provided on a center portion of the seat, a connecting pipe communicating the valves and the outlet pipe. A sleeve is disposed on the center portion of the seat. A collar is slidable in the sleeve and embraces a lower end of the outlet pipe. A retaining means is provided between the collar and the connecting pipe for rotatably holding the lower end of the outlet pipe so that the outlet pipe is stably and rotably held in the sleeve.

Abstract: A thermostatic mixing valve is described having separate valves for hot and cold water each with a stepping motor to adjust their positions and connected to a microprocessor using a temperature sensor in a mixing chamber to read the mixed temperature and step the motors individually to adjust the valve positions as required.

Abstract: An automatically operating valve for regulating water flow, especially a mixing valve for automatically mixing hot water and cold water to obtain a mixed water of a desired temperature is characterized by employing piezoelectric actuators for operating valve bodies thereof. Due to such a construction, the valve can not only fully close or open but also carries out the fine flow amount control by regulating the opening rate or angle of the valve body. Especially in case the automatically operating valve is a mixing valve, the mixing ratio of hot water and cold water can be accurately regulated so that the mixed water of a desired temperature can be always automatically obtained.

Abstract: An automatically operating valve for regulating water flow, especially a mixing valve for automatically mixing hot water and cold water to obtain a mixed water of a desired temperature is characterized by employing piezoelectric actuators for operating valve bodies thereof. Due to such a construction, the valve can not only fully close or open but also carries out the fine flow amount control by regulating the opening rate or angle of the valve body. Especially in case the automatically operating valve is a mixing valve, the mixing ratio of hot water and cold water can be accurately regulated so that the mixed water of a desired temperature can be always automatically obtained.

Abstract: A gas/air mixing valve is provided for regulating the amounts of combustion air and fuel gas that are delivered to a burner or a series of burners for use with both residential and commerical cooking ranges. The mixing valve overcomes the problem of pressure disturbances caused by known mixing valves by drawing a constant flow of combustion air regardless of whether the burner to which it is supplying fuel gas and air is off or operating at any intensity level. In a preferred embodiment the mixing valve is provided with an adjustable orifice disk which directs a constant flow or air, in selectable proportions, to either combine in the mixing valve with fuel gas for combustion or bleed to atmosphere. By always drawing a constant flow of air independently of the operating level of the burner, the mixing valve allows adjustment of individual burners with no effect on other burners connected to the system.

Abstract: An automatically operating valve for regulating water flow, especially a mixing valve for automatically mixing hot water and cold water to obtain a mixed water of a desired temperature is characterized by employing piezoelectric actuators for operating valve bodies thereof. Due to such a construction, the valve can not only fully close or open but also carries out the fine flow amount control by regulating the opening rate or angle of the valve body. Especially in case the automatically operating valve is a mixing valve, the mixing ratio of hot water and cold water can be accurately regulated so that the mixed water of a desired temperature can be always automatically obtained.

Abstract: A variable output adjustable carbonator for blending plain and carbonated water at a desired ratio before being mixed with syrup inside the nozzle of a beverage dispenser. The dilution of carbonated water with plain water permits the dispensing of beverages having variable carbonation. Plain and carbonated water traveling in separate conduits enter the adjustable carbonator and follow separate passages inside, each being regulated by an adjustable flow control washer which maintains a constant flow therethrough despite variations in the fluid supply pressure. A needle valve is employed to adjustably restrict flow through each flow control washers, thereby fixing the mixture of plain and carbonated water at a predetermined ratio.

Abstract: A closed loop feedback control for a high pressure impingement mixing system. The high pressure impingement mixing device is equipped with a circulation loop containing both a pressure sensor and a flow volume meter. Constant pressure and flow volume is achieved by continuous closed feedback loop monitoring of the pressure and flow volume to effect a change in an adjustable pump setting and servo displaceable nozzle needle. The nozzle needle adjustment allows maintaining the appropriate pressure and volume on a continuous spaces. It also allows altering component ratios and/or flow volumes during a shot in order to affect a change in material or flow characteristics of a produced part.

Abstract: A valve assembly particularly designed for the control of hot and cold water comprising a frame having mounted thereon a first and second inlet conduit, and a first and second outlet conduit. A first solenoid valve connecting said first inlet and first outlet conduits to provide opening and closing of the passageways formed by those conduits. A second solenoid valve connecting said second inlet and second outlet conduits to provide for opening and closing of the passageway formed by said conduits. A ground fault circuit interrupter mounted on said frame and operatively connected to said first and second solenoid valves to prevent any potential electrical shock. The ground fault circuit interrupter is wired between the solenoids and the switched power supply providing for activation and deactivation of said solenoid valves.

Abstract: A compact manifold valve for use in gas flow systems includes a manifold body, first and second cartridge holders, first and second operating valves and an outlet port. The manifold body includes valve turrets for mounting the first and second operating valves. Different valves types such as externally pressurized, normally closed bellows or diaphragm valves, externally pressurized, normally open bellows or diaphragm valves, double acting bellows or diaphragm valves, manually operated valves and/or toggle operated valves may be readily interchanged in the manifold valve to accommodate different applications in the gas flow system. The manifold body also includes first and second valve chambers, first and second cartridge ports, and multiple fluid flow pathways fluidically interconnecting the valve chambers, cartridge ports and outlet port. The manifold valve further includes first and second cartridge holders which are configured to be readily mounted in and removed from the manifold body.

Abstract: An apparatus for producing and/or administering medicines and nutritional solutions to a patient. The apparatus includes a multiway valve having a plurality of inlets, an outlet and a collecting reservoir between the inlets and the outlet. The multiway valve may also have an injection site and connection that can be used both as an inlet and an outlet. The inlets, outlets and injection site each include a one-way valve which allows flow only in the direction from the inlets to the patient. A syringe may be connected to the inlet/outlet connection to draw an amount of solution form one or more of the solution bags and then move the solutions together into a mixing bag connected at the outlet, to prepare a medicine or nutritional solution.

Abstract: An apparatus for preparing gas mixtures from constituents taken in a given proportion which incorporates sources of gas mixture constituents connected to pressure-reducing valves and to a device for stabilizing absolute pressures of the gas mixture constituents an outlet of which communicates with a device for setting a proportion between the gas mixture constituents consisting of a distributor which is series-connected to at least two--depending on the number of the gas mixture constituents--sets of capillary tubes featuring all the same friction head. The device for setting the proportion between the gas mixture constituents is connected to a main mixer of the gas mixture components an outlet of which communicates with a controller of absolute pressure of the gas mixture.

Abstract: A valve block assembly with internal delivery channels and a common outlet channel is provided. Access of reactants to the delivery channels is controlled by diaphragm valves, preferably equipped with relief grooves to accommodate deformation of the diaphragm. Reservoirs feeding the delivery channels have an inert atmosphere controlled by pressurizing and venting channels in the valve block. Exposure of plastic tubing to oxygen is kept to a minimum. The assembly is particularly adapted for use in a DNA or protein sequencer to supply reactants without cross-contamination or oxidative decomposition.

Abstract: A gas mixing device of a blood gas analyzer has a substrate made of a material such as silicon and a plate having a flat smooth surface, made of a material such as glass. The plate is bonded to the substrate. The substrate has a plurality of fine elongated grooves extending between inlet and outlet ports formed in the plate. Different gases are introduced through the respective inlet ports, and combined with each other in the gas mixing device. The levels of flow resistance in branch grooves are so determined that the different gases are mixed at predetermined mixing ratios for delivery to the outlet ports. Further, the analyzer includes the gas mixing device and a measuring unit equipped with a plurality of gas measuring electrodes. The mixture gas from the gas mixing device is made to bubble through a buffer solution in a reservoir for producing a standard liquid measuring unit that is delivered at predetermined time intervals to the analyzer for calibration.

Abstract: A water tap has a closure member in the form of a rubber or like cup 34 located in a chamber in carrier 32. The base of the cup extends across the port 28 which is to be closed when the tap is in "off" condition and the base of the cup has a hole 38 registered with the port in that off condition. Hence water can flow into the cup and the water pressure in the cup acts to hold the cup on the seat whereas pressure in the port acts against the base of the cup in the opposite direction but on a smaller area of cup. Hence the higher the water pressure the better the seal.

Abstract: A mixing tap for a kitchen sink or like comprises a functional assembly of water ways in a body with control valves enclosed in a shroud for aesthetic considerations. The shroud is generally tubular with a second part and these two parts meet about an axis of the control valve normal to the axis of the spouts 22 so that a seamless smooth exterior can be provided on the spout.

Abstract: A multi-stage, especially a two-stage mixing of two media of different viscosity, and a respective mixing nozzle provided therefor. The first medium of higher viscosity is divided into two or more partial streams. The first partial stream is passed through an injector, in which the second medium of lower viscosity is mixed in, in particular tangentially. In an adjoining mixing chamber, the second partial stream of the first medium is admixed into the flowing mixture of the first partial stream and the second medium of lower viscosity and envelops the same, preferably in an opposite or counter-twist to the flowing twist of the first mixture of the first partial stream and second medium. This is especially suitable for bleaching of cellulose with oxygen.

Abstract: A fluid dispensing and metering unit is described for dispensing fluids into a system without the introduction of microcontaminants into the fluid flow. This unit includes a block with a fluid conducting duct axially extending from the block's proximal face to the block's distal face. In communication with the fluid conducting duct is a combined dispensing and modulating means for regulating the amount of fluid entering the fluid conducting duct. A plurality of these units can be assembled to construct a flow control manifold, creating a single continuous duct for carrying all dispensed fluids.