Abstract: A control unit for household appliances which are connected to a cold and hot water supply network (K and H). Said control unit comprises a mechanical actuator which can adjust the temperature of the mixed water from both of the water networks to a predetermined value in conjunction with a thermosensor and an intelligent evaluation system and is branched to various outlet lines at the same time as the mixed water flow. The adjusting element is embodied as a rotary valve or as a piston and is only displaced in one direction by means of the drive thereof. The outlet lines, which correspond to the program sequence, are successively controlled in the direction of displacement.

Abstract: A system and method for controlling fluid flow within a microchannel includes a fluid circuit comprising a fluid outlet well and one or more fluid inlet wells, all in communication with a microchannel. A negative pressure differential is applied to the outlet well and fluid flow from an inlet well into the microchannel is controlled by opening or closing the inlet well to atmospheric pressure. To stop fluid flow from the inlet well, a negative pressure differential may be applied to the inlet well to equalize pressure between the inlet and outlet wells. By sequentially opening and closing different inlet wells to atmosphere, controlled amounts of different reagents can be serially introduced into the microchannel.

Abstract: A bypass valve includes a body with first and second chambers connected by a bridge passage, an untreated water inlet and an untreated water outlet both open into the first chamber, and a treated water inlet and a treated water outlet both open into the second chamber. A first valve element is rotatably received in the first chamber alternately to connect the inlet to the untreated water outlet or the bridge passage. A second valve element is rotatably received in the second chamber alternately to connect the outlet to the treated water outlet or the bridge passage. A manually operable mechanism rotates the first valve element in the first chamber and the second valve element in the second chamber. A flow sensor is received within either the first or second valve element to measure the amount of water flowing through the bypass valve.

Abstract: Operation of a water softener is controlled by a set of valves within a body that has water inlet, water outlet, a regenerant connector and a drain outlet. Openings are provided in an exterior wall of the body through which a plurality of valve elements are received. The body has opposing exterior side walls through which a seam diagonally extends, thereby separating the body into two parts sealed together at that seam. The diagonal seam divides internal fluid chambers between each part and facilitates molding the parts so that the entire body can be fabricated by only two parts.

Abstract: An air injection assembly for a shower, comprising a generally cylindrical aspiration pipe. The aspiration pipe has a generally axially disposed bore. The assembly further includes a water guiding tube, having a cone-shaped opening. A generally cylindrical adapter houses the aspiration pipe and the water guiding tube. The generally cylindrical adapter also has air inlet holes that permit fluid communication between the bore of the aspiration pipe, and the ambient air surrounding the air injection assembly.

Abstract: One or more diaphragm valves are integrated as part of a cover of a microfluidic cassette cartridge. A rigid body portion includes one or more recessed valve areas and a plurality of fluid channels. A recessed valve area is disposed along either a bottom surface or a top surface of the rigid body portion. An inlet fluid channel and an outlet fluid channel are formed within the rigid body portion of each recessed valve area. A flexible membrane cover is sealed over the bottom surface of the body portion, and another flexible membrane cover is sealed over the top surface. A portion of the membrane cover that covers a recessed valve area functions as a valve membrane of the diaphragm valve. The flexible membrane functions as both a cover of the cartridge, thereby sealing and enclosing the appropriate channels, and a valve membrane of the diaphragm valve.

Abstract: A plumbing apparatus and method for pools, spas and the like is provided. In one embodiment, a jet assembly may be provided, with the assembly comprising a jet body and one or more inside/outside fittings extending from the body. The one or more fittings are substantially hollow. At least one water supply hose is provided, with the hose sized to fit snugly inside the one or more hollow fittings or sized to fit snugly around the exterior of the one or more fittings. A plumbing system may also be provided, with the system comprising a manifold with a main body and a plurality of inside/outside fittings extending from the body. A plurality of spa accessories is also provided, with each of the accessories comprising at least one inside/outside fitting. Further, a plurality of supply hoses is provided, with one end of each hose sized to fit snugly inside or around the exterior of the manifold fittings, and the other end of each hose sized to fit snugly inside or around the exterior of the spa accessory fittings.

Abstract: A fluid transportation device includes a flow-gathering module and multiple double-chamber actuating structures. The flow-gathering module includes two surfaces opposed to each other, multiple first flow paths and multiple second flow paths running through the two surfaces, an inlet channel arranged between the two surfaces and communicated with the multiple first flow paths, and an outlet channel arranged between the two surfaces and communicated with the multiple second flow paths. The multiple double-chamber actuating structures are arranged on the flow-gathering module side by side. Each double-chamber actuating structure includes a first chamber and a second chamber symmetrically arranged on the two surface of the flow-gathering module. Each of the first chamber and the second chamber includes a valve cap arranged over the flow-gathering module, a valve membrane arranged between the flow-gathering module and the valve cap, and an actuating member having a periphery fixed on the valve cap.

Abstract: Device including channel having channel input and output. Channel has interior channel surface extending along channel path from channel input to output. In one implementation, channel includes plurality of channel sections in serial communication along channel path. Each of channel sections includes first internal circumference spaced apart along channel path from second internal circumference, in each of channel sections the first and second internal circumferences being substantially different. Each of channel sections includes sub-surface of interior channel surface. At least region of sub-surface of each channel section includes distribution of raised micro-scale features. As another implementation, at least first region of interior channel surface includes distribution of raised micro-scale features interrupted by plurality of raised barriers spaced apart along channel path on interior channel surface.

Abstract: A pipe coupling flange (16) comprising a central bore and having first and second ports for receiving valves and a plurality of channels, wherein a take-off channel links the first port with the central bore, a feed channel links the first port directly or indirectly with the second port; and wherein the second port links directly or indirectly with the exterior of the flange. Across two pipe flanges (16), an fixed directly to the periphery of each flange there may be a Bridge (30). The bridge (30) may be capable of having process media (24) monitoring devices fixed directly to it.

Abstract: A rain water diversion device for insertion in a truncated down pipe comprises an upper deflecting section (2) and a mating lower diverting section (1) which is divided into two communicating compartments one of which, in use, feeds an outlet (6) and the other of which receives overflow from the first compartment.

Abstract: A pivotable control valve assembly may be used with a water treatment device in a water treatment system. A pivotable control valve assembly may be pivotable relative to the water treatment device to allow user controls on the pivotable control valve assembly to be oriented in a desired user access position. In a water treatment system including a plurality of water treatment devices, for example, one or more pivotable control valve assemblies may be pivoted such that user controls for each of the water treatment devices are in desired user access positions.

Abstract: A method of coupling at least two conduits for bringing them in communication. Each of the conduits is adapted for conducting a medium and has an outlet and an outer surface adjacent to the outlet. The outer surfaces and a solid plastic material are at least partly inserted into an aperture of a coupling element. The plastic material is plastified and/or melted at least partly. The plastic material is solidified for sealing and fixing the conduits within the aperture of the coupling element.

Abstract: An assembly for the differential delivery of treated and mains water, comprising a flexible hose for the separate conveyance of treated water and mains water for connection between a spray head provided with at least two separate delivery points and a distribution unit for the separate supply of treated water and mains water. The flexible hose has, at its ends, respectively a first connection port, for connection to the distribution unit, the second port being connectable to the distribution unit so as to allow free rotation about the axis of the second port.

Abstract: A valve means (1) comprises a valve support (2) with internal valve support ducts (15). Several component mounting sites (12) are located on the valve support (2) to be individually fitted with control units (3), at least one special purpose control unit (3b) being present, which with an intermediate plate (24) simultaneously covers over several adjacently placed component mounting sites (12). At least one control valve (4) of the special purpose control unit (3b) is connected with the valve support ducts (15) opening at the covered component mounting sites (12) via an intermediate plate duct arrangement (28) running in the intermediate plate (24).

Abstract: A valve body has a channel extending along an axis and an inlet port open to the channel. A sleeve, received about the valve body, overlies the inlet port and is rotatable about the axis relative the body. A nozzle projects radially outward from the sleeve. The nozzle is rotatable with the sleeve into a range of positions in which the nozzle communicates with the inlet port through the sleeve.

Abstract: The present invention is related to a water faucet having a water temperature retaining feature. The water faucet includes a hot water control, a cold water control, a mixing chamber for receiving the hot water and the cold water, a first flow control cartridge operationally coupled with the hot water control for regulating the flow of hot water, a second flow control cartridge operationally coupled with the cold water control for regulating the flow cold water, an outlet for dispensing a mixture of hot and cold water received from the mixing chamber, and a master control for controlling the dispensing of water through the outlet, wherein the master control is capable of stopping the dispensing of water through the outlet while either of the hot water control and the cold water is in an open position.

Abstract: A bypass valve has a body with an inlet for receiving untreated water, an untreated water outlet for connection to a water treatment apparatus, a treated water inlet and an outlet through which treated water flows. The body includes a first valve seat between the inlet and the outlet, a second valve seat between the treated water inlet and the outlet, and a third valve seat in a flow path between the inlet and the outlet. A set of first, second and third flapper valve elements selectively engage and disengage the first, second and third valve seats respectively. The three flapper valve elements are preferably connected to a common manually operable actuator which can be latched to hold the valve elements in different functional positions.

Abstract: A bleed valve bleeds hot gases from a compressor into a bypass duct of a gas turbine engine. The valve comprises a diffuser having opposing walls and a divider located between the walls and which define at least two passages through which a bleed fluid flows and into a fluid flow through the bypass duct. The passages are angled towards each other to force the two gas flows together to form a high aspect ratio plume. This plume has a relatively large surface area that that improves mixing with the bypass flow to cool it and prevented otherwise hot bleed flows from impinging on heat sensitive components adjacent the bypass duct.

Abstract: Valve-to-fitting converter that mounts on the body of an existing valve in a piping system in place of the actuator for the valve and has a dam that mates with a weir in the valve body to block flow between sections of piping connected to the valve body, and ports that provide communication between the sections of piping and fittings connected to the converter. With such converters replacing two or more of the valves in a system, sections of piping can be isolated and/or re-routed without having to shut down the entire system for an extended period of time.

Abstract: A modular mounting and connection or interconnection system for microfluidic devices (20) includes a plurality of end-butting compression-sealing fluid connectors or adapters (32), and one or more clamping structures (54, 56) each structured to hold one of the fluid connectors (32) in compression against a planar surface of a microfluidic device (20), and to press against the device, on another directly opposing planar surface thereof, either a contact pad (48) or another of the fluid connectors (32), with each clamping structure (54,56) including an individually moveable compression-providing element such as a compression screw (36) structured to provide a controlled amount of compression.

Abstract: A flow control element comprises a cylindrical element body having a bore formed therethrough. The cylindrical element body may include inner and outer peripheral surfaces and define a plurality of tortuous flow passages which extend between the inner and outer peripheral surfaces. The flow control element is formed as a unitary structure wherein the flow passages are oriented along at least two axes. The flow control may be formed by direct to metal laser sintering wherein successive layers of powdered metallic material are solidified by applying laser energy to the selected portions until the flow element is formed as a unitary structure with a plurality of flow passages extending therethrough. The laser energy is selectively applied to the powdered metallic material according to a computer model of the flow control element.

Abstract: An ampoule assembly is configured with a bypass line and valve to allow the purging of the lines and valves connected to the ampoule. The ampoule assembly, in one embodiment, includes an ampoule, an inlet line, an outlet line, and a bypass line connected between the inlet line and the outlet line, the bypass line having a shut-off valve disposed therein to fluidly couple or decouple the inlet line and the outlet line. The shut-off valve disposed in the bypass line may be remotely controllable. Also, additional remotely controllable shut-off valves may be provided in the inlet and the outlet lines.

Abstract: A dispersing device for dispersing, homogenizing and mixing fluidic multi-component systems and for dispersing, homogenizing, mixing and micronizing solids includes a nozzle body, two inlet nozzle assemblies and two outlet nozzle assemblies which are received in the nozzle body. These nozzle assemblies are connected to a central inner space of the nozzle body via corresponding bores. The inner space can have a circular, quadratic, rectangular or elliptical cross-section. The inlet nozzle assemblies and the outlet nozzle assemblies are provided in pairs, whereby at least one pair of inlet nozzle assemblies and one pair of outlet nozzle assemblies are provided, although an odd number of inlet nozzle assemblies and outlet nozzle assemblies can also be provided, e.g. 3, 5 or 7.

Abstract: A splitter for a pressurized primary flowstream of a mobile phase is provided. The splitter comprises a first splitting stage that divides the primary flowstream between a major split flowstream and a minor split flowstream by means of a first and a second restrictive flow element; a first dilution stage that combines a dilution flow source with the minor split flowstream to create a diluted minor flowstream;a second splitting stage that divides the diluted minor flowstream between a secondary major diluted flowstream and a secondary minor diluted flowstream by means of a third restrictive element in the secondary minor diluted flow stream; and a second dilution stage wherein a conditioning flow source conditions the secondary minor diluted flow stream after the third restrictive element prior to outlet of the secondary minor diluted flowstream from the splitter.

Abstract: Microfluidic Systems, Devices and Methods for Reducing Noise Generated by Mechanical Instabilities. According to one embodiment, a microfluidic device is provided for reducing noise in a fluid mix. The microfluidic device can include microscale channels for passage of fluids to a mixing junction. The mixing channel can be adapted to combine the fluids into a common fluid flow. The microfluidic device can also include a connector channel including first and second ends. The first end of the connector channel can be connected to the mixing junction. The microfluidic device can also include an expansion channel having connection to the second end of the connector channel. The expansion channel can be adapted for passage of the fluid mix through the expansion channel to reduce concentration gradient noise of the fluid mix by dispersion of the fluid mix as the fluid mix passes through the expansion channel.

Abstract: An embodiment of the present invention is a method for creating and maintaining a partial vapor pressure in a sample chamber of a sorption analyzer. A first dry gas flow is purged from a first mass flow controller through a saturator to produce a near-saturated gas flow. The near-saturated gas flow is mixed with a second dry gas flow from a second mass flow controller to produce a mixed gas flow with a predetermined partial vapor pressure. The mixed gas flow is directed into the sample chamber. If the lowest possible vapor pressure is required in the sample chamber, the first dry gas flow is directed around the saturator to the sample chamber and vapor migrating from the saturator is vented to the atmosphere.

Abstract: A gas-panel manifold for use in a gas-panel assembly is disclosed. A manifold in the assembly provides a plurality of support surfaces, each designed for supporting a gas-component thereon, and internal passageways disposed within the manifold body for connecting gas components, with such carried on the manifold, for gas flow through the manifold in a generally downstream direction. The adjacent support surfaces in the manifold are in different planes, representing different heights above the support.

Abstract: A valve for adjusting the flow of water through an oral irrigation device is connected to a shower head by a flexible conduit. The valve is located on a handle connected to a water-dispensing pick for cleaning teeth and gums. Mixing apparatus is provided for injecting a secondary fluid, such as a mouthwash, into the flexible conduit upstream from the pick in a direct stream from the shower head.

Abstract: A routing system for shared conduits used in industrial applications is sensitive to material types and material flow histories to allow compatible materials to flow through shared conduits without cleaning while preventing contamination of materials in those shared conduits.

Abstract: A delivery device for thin-film material deposition has at least first, second, and third inlet ports for receiving a common supply for a first, a second and a third gaseous material, respectively. Each of the first, second, and third elongated emissive channels allow gaseous fluid communication with one of corresponding first, second, and third inlet ports. The delivery device can be formed from apertured plates, superposed to define a network of interconnecting supply chambers and directing channels for routing each of the gaseous materials from its corresponding inlet port to a corresponding plurality of elongated emissive channels. The delivery device comprises a diffusing channel formed by a relief pattern between facing plates. Also disclosed is a process for thin film deposition. Finally, more generally, a flow diffuser and a corresponding method of diffusing flow is disclosed.

Abstract: A mixing device for gaseous fluids such as air, made up of a tank having a central line and provided with inlet ducts and outlet ducts arranged so as to create an upward swirling movement of the said fluid inside the said tank in order to ensure homogenous temperature at the outlet, characterised in that the said tank comprises at least one means for amplifying fluid mixing that takes the form of at least one additional communication means with the outside/inside of the said tank. More precisely, the said additional communication means takes the form of at least one draining means defining an open or closed volume, placed on the lower part of the tank, further comprising at least one adjustable shutting means.

Abstract: An automatic transmission having at least one hydraulic valve with flow force compensation. The hydraulic valve includes a valve body having a valve bore and at least one inlet and at least one outlet adapted to provide fluid communication with a source of pressurized hydraulic fluid and a return to the source of pressure. A valve member is slidingly disposed within the valve body that includes at least one valve element having an outer diameter and a metering face. The metering face is adapted to control the flow of pressurized hydraulic fluid between the inlet and the outlet of the valve body. The metering face includes a flow force compensating annular void disposed adjacent to the outer diameter that is defined by a lead angle ? measured between the outer surface and a line intersecting the outer surface and tangential to the annular void.

Abstract: A clean in place gassing manifold comprises a gassing module comprising a hub, the gassing module and the hub being formed as a unitary device; and a complimentary clean in place module for coupling the gassing module, the complimentary clean in place module comprising a head that inserts into the hub of the gassing module. The gassing module coupled with the complimentary clean in place module allow a cleaning solution to be pumped through the coupled modules at and above a minimum flow rate and a minimum velocity for effective cleaning.

Abstract: A diaphragm-sealed valve having communication mechanisms operatively connecting neighbouring pairs of grooves is provided. Each communication mechanism has a communication port opening in an interface of a valve cap, between the neighbouring grooves. The communication mechanism also has a communication conduit extending within the valve cap and connecting the communication port and one of the neighbouring grooves. It also has a recess within a valve body aligned with the communication port and with the other one of the neighbouring grooves, a flexible sealing surface of the diaphragm being seated within the recess and resiliently biased away from the interface of the valve cap. A plunger assembly is also provided, including plungers movable to push flexible sealing surface towards the communication port.

Abstract: A water control fixture includes a housing having a plurality of ports defining a hot water inlet port, a cold water port, a fixture outlet port, and an auxiliary port, wherein water is dispensed from the housing via the fixture outlet port. A flow control unit is configured to be selectively positioned in fluid communication with different combinations of the plurality of ports, wherein the flow control unit has a main passage in fluid communication with the hot water inlet port, the cold water port, and the fixture outlet port. The flow control unit controls the flow of water from the hot water inlet port and the cold water port to the fixture outlet port. The flow control unit has an auxiliary passage in fluid communication with the auxiliary port and at least one of the hot water inlet port, the cold water port, and the fixture outlet port to perform an auxiliary function.

Abstract: A flexible gas delivery apparatus having a gas panel with a first extension block having a first section and second section, the first section positioned between a mixing valve and the substrate having an exit port in fluid communication with a pump/purge manifold, and a second extension block having a first section and a second section, the first section positioned between a purge valve and the substrate having a discharge port in fluid communication with a mixing manifold, wherein the second portion of the first and second extension blocks extend outwardly from the gas panel.

Abstract: An adapter for use in association with upstream and downstream portions of a piping system is disclosed. The adapter includes a first chamber having an inlet adapted to receive fluid therethrough, an outlet adapted to expel fluid therefrom, and a sidewall extending therebetween defining a first chamber interior. The adapter also includes a second chamber having an inlet adapted to receive forced fluid therethrough, an outlet adapted to expel the forced fluid therefrom, and a sidewall extending therebetween defining a second chamber interior. The first chamber interior is isolated from the second chamber interior. The first chamber is adapted to receive forced fluid therethrough from an upstream portion of a piping system, and the second chamber is adapted to provide forced fluid therethrough to a downstream portion of the piping system.

Abstract: In one aspect the invention discloses an improved gas burner with a high turn-down ratio. The improved burner includes first and second gas flow passages (44, 47), a flame front locator (49) in one of the passages of the burner head. Fuel gas is injected into an end of one of one of the passages (47) and is ignited to establish a flame at the flame front locator (49). Secondary combustion air is provided through the other of the passages (44) which on a high setting enables secondary combustion and on a low setting may mix with the hot gases and cool them resulting in a lower temperature at the cooking vessel.

Abstract: Apparatus comprising: a chamber having a chamber inlet and a chamber outlet; a first inlet for receiving a first gas stream; a second inlet for receiving a second gas stream; a first outlet for outputting the first gas stream to a first vacuum pump; a second outlet for outputting the second gas stream to a second vacuum pump; a conduit network for connecting the first inlet to the first outlet and for connecting the second inlet to the second outlet such that, for each gas stream, first and second flow paths are defined between its respective inlet and outlet, the first flow path passing through the chamber inlet and the chamber outlet, and the second flow path by-passing the chamber, and means for routing the gas streams through the network such that when one gas stream flows along its first flow path, the other gas stream flows along its second flow path.

Abstract: A tempering system for tempering a mold by supplying heat via at least one heating medium, includes a first heating medium circuit and a second heating medium circuit. The first heating medium circuit and the second heating medium circuit are connected by a connecting unit to form an integrated unit having an outlet in working connection with the temperable mold. The connecting unit selectively allows a heating medium at a first temperature or a heating medium at a second temperature to be supplied to the mold, whereby the medium at the first and second temperatures is available to the mold in alternation.

Abstract: An automatic transmission having a pressure regulator with flow force compensation. The pressure regulator includes a valve body having a valve bore and at least one inlet and at least one outlet adapted to provide fluid communication with a source of pressurized hydraulic fluid and a return to the source of pressure. A valve member is slidingly disposed within the valve body that includes at least one valve element having an outer diameter and a metering face. The metering face is adapted to control the flow of pressurized hydraulic fluid between the inlet and the outlet of the valve body. The metering face includes a flow force compensating annular void disposed adjacent to the outer diameter that is defined by a lead angle ? measured between the outer surface and a line intersecting the outer surface and tangential to the annular void.

Abstract: A device (1) for producing multiple fluid flows at substantially uniform rates, which device includes: A manifold (2) having a first inlet port (3) and a second inlet port, each inlet port arranged to provide fluid transfer from the inlet port to a respective annular channel (4, 5, 6), a distribution element (7) having a first aperture set (12) and a second aperture set (13) therein, each aperture set including at least one aperture and being arranged to be in fluid communication with one of the annular channels such that fluid is permitted to flow from the annular channel through an aperture to a respective fluid outlet.

Abstract: The present invention relates to a valve unit for a microfluid system comprising a first and a second fluid reservoir, a flow chamber, a fluid channel array and a conveying means, said first fluid reservoir being, via the flow chamber, in fluidic communication with the second fluid reservoir through the fluid channel array, wherein the valve unit can be brought from a first state to a second state so that, in said first state, a fluid can be conveyed by the conveying means from said first fluid reservoir through the flow chamber in a predetermined direction of flow into the second fluid reservoir, and so that, in said second state, a fluid can be conveyed by the conveying means from said second fluid reservoir through the flow chamber in a predetermined direction of flow into the first fluid reservoir.

Abstract: A serviceable double block and bleed valve is provided, having a futbol, and having an integral body having two block valves and one bleed valve and a flange on its inlet end which is bolted to a mating flange of the futbol The double block and bleed valve is installed on the process pipe by welding of the inlet of the futbol to the process pipe, while servicing or replacement of the integral body or any parts associated therewith is achieved through removal of the bolts holding the mating flanges together.

Abstract: In certain embodiments, an apparatus includes a control valve for regulating fuel flow. The apparatus can include a burner and a valve assembly. In some embodiments, the valve assembly includes a housing, which can define a first fuel input for receiving a first fuel from a first fuel source and a second fuel input for receiving a second fuel from a second fuel source. The housing can define a first fuel output for directing fuel toward the control valve, and can define a third fuel input for receiving a portion of either the first fuel or the second fuel from the control valve. The housing can define a first egress flow path and a second egress flow path, each for directing fuel to the burner. In certain embodiments, the apparatus includes a valve body configured to selectively permit fluid communication between the first and second inputs and the output and between the third input and the egress flow paths.

Abstract: A sanitary fitting has a housing which has a hot-water supply, a cold-water supply and two mixed-water outlets, having a cartridge which is arranged in the housing and has a mixing valve for cold and hot water, there being arranged between the two mixed-water outlets a changeover valve which comprises a double valve cone (151) which, by virtue of an actuating member being pulled, can be moved, counter to the force of a restoring spring, from a first position, in which it releases the first mixed-water outlet, into a second position, in which it releases the second mixed-water outlet and in which it is held under the pressure of mixed water flowing through the second mixed-water outlet until it returns automatically into the first position once the inflow of water has been switched off.

Abstract: A machining spindle includes an inner shaft arranged for carrying a first tool and an outer shaft for carrying a second tool. The shafts are mounted for rotation about a common axis and for axial movement relative to each other. The inner shaft is mounted within the outer shaft, which is journaled in a main body of the spindle. The machining spindle also includes a fluid pressure-driven actuator arrangement for driving the shafts between a first state and a second state differing in relative axial positions. The actuator arrangement is provided within and rotates with the outer shaft.

Abstract: Module assembly for a gas system operating at pressures greater than 100 bar. The assembly comprises at least two modules made as solid metal blocks. Bach block provided with a system of drilled channels and appendages. The system of channels comprises a main and at least one branch channel. The appendages comprise at least a shut-off valve and a flow or pressure meter connected to the branch channel. The blocks of two modules are positioned laterally against one another. Each block having openings aligned with a corresponding number of openings in the other block, for joining channels in the one block to channels in the other block. The invention furthermore relates to a gas system provided with the module assembly according to the invention and to the use of such an assembly.

Abstract: In a first aspect, a valve assembly is provided that includes a valve assembly output adapted to output at least one of DI water and a chemical. A first valve of the valve assembly includes (1) a first input adapted to receive the chemical; (2) a first output adapted to circulate the chemical to a chemical return; and (3) a second output adapted to output the chemical to the valve assembly output. The valve assembly also includes a second valve positioned downstream from the first valve. The second valve includes (1) an input adapted to receive deionized (DI) water; and (2) an output adapted to output DI water to the valve assembly output. A check valve is coupled between the second output of the first valve and the output of the second valve, and the first valve, second valve and check valve are included in a single manifold.