Abstract: A mix manifold (16) includes a plurality of valves to control the flow of material therethrough. First and second valves (36a, 36b) are linked for simultaneous actuation. The first and second valves each include valve members (56a, 56b) disposed within and rotatable relative to seal bodies (58a, 58b). The valve members seal against the seal bodies and the seal bodies seal against the manifold. A solvent valve (36c) also includes a valve member (56c) in a seal body (58c). The first and second valves are configured to open only when the solvent valve is closed. The solvent valve is configured to open only when the first and second valves are closed. The solvent valve can rotate between a plurality of positions to control the flow of solvent to flowpaths downstream of the first and second valves.

Abstract: A delivery unit for dispensing adhesive having a housing, a melting apparatus arranged within the housing for melting the adhesive, a distributing device for dispensing molten adhesive in at least one line connectable to the distributing device, and a pump for conveying the molten adhesive through the distributing device, wherein the housing has a plurality of outer side faces, two of the outer side faces are of a flat configuration and arranged perpendicular to a support plane of the delivery unit on a base and substantially at a right angle to each other, and wherein the distributing device, in a region in which the line is connectable to a connector of the distributing device, has a boundary surface of a flat configuration. The two outer side faces are arranged at a distance apart with the boundary surface therebetween forming an obtuse angle with each of the two outer side faces.

Abstract: A dosing unit having a fluid path defined therethrough and including a fluid injector having an inlet tube; an inlet cup sized and shaped for receiving therein at least part of the inlet tube of the fluid injector, the inlet cup including a fluid inlet; an input tube in fluid communication with the inlet cup via the fluid inlet thereof, the input tube configured to receive fluid from a fluid source; and an insert partly disposed in the inlet tube of the fluid injector, the insert at least partly defining a fluid passage. The fluid passage is in fluid communication with the input tube and the inlet tube of the fluid injector and forms part of the fluid path of the dosing unit. The fluid passage includes a portion extending in a direction that is orthogonal to a longitudinal axis of the fluid injector.

Abstract: An injector is provided, comprising an injector body comprising an inlet passage configured to receive fluid, at least one injection outlet configured to deliver fluid, and a central bore, a needle valve disposed for reciprocal movement within the central bore between a closed position and an opened position; and an actuator configured to move the needle valve between the closed position wherein a first portion of a surface of the valve tip engages a first portion of a surface of the injector body to form a first seal that inhibits flow through the at least one injection outlet, and the opened position wherein a second portion of the surface of the valve tip engages a second portion of the surface of the injector body to form a second seal that inhibits flow through the drain outlet.

Abstract: The subject matter of this specification can be embodied in, among other things, a fluid flow trim apparatus includes an outer housing defining a cavity having an interior surface and an end wall having an orifice therethrough, a valve body comprising a first valve portion disposed at least partly within the cavity, the first valve portion and the interior surface defining a first fluid flow path, a second valve portion in contact with the interior surface and defining a second fluid flow path. A third valve portion is disposed at least partly within the cavity between the first and second valve portions. The second fluid flow path fluidically connects the third valve portion to a trim cavity. A filter media extends from the first valve portion to the second valve portion and divides a third fluid flow path fluidically connecting the first and seconds fluid flow paths.

Abstract: A method and kit for preserving a fuel system of an aircraft engine outside of an engine test cell in preparation for a period of inactivity of the aircraft engine are disclosed. The method comprises: supplying preservation fluid to the fuel system of the aircraft engine; generating a signal to cause the opening of a valve of the fuel system using a control device other than the electronic engine controller of the aircraft engine; and driving a fuel pump of the fuel system to cause some of the preservation fluid to flow through the open valve and in at least part of the fuel system of the aircraft engine.

Abstract: A paint circulating system 10 and a pressure relief module 40 utilized therein are described. The paint circulating system 10 comprises a pressurized paint supply pipeline 22, a tank return pipeline 34 and a pressure relief module 40. The pressure relief module 40 comprises: a first flow chamber 65 through which pressurized paint is provided to said supply pipeline 22; a second flow chamber 69 through which paint returns to said tank return pipeline 34; an orifice 42 interconnecting said first and second flow chambers; and a valve member 46 biased towards the orifice so as to block said orifice. The valve member 46 is moveable in response to a pressure in said first flow chamber 65 exceeding a predetermined relief pressure so as to displace said valve member 46 to open said orifice 42. This allows paint to flow from said first flow chamber 65 into said second flow chamber 69, preventing failure occurring in the paint circulating system 10.

Abstract: A modular spray gun manifold having a plurality of spray gun modules arranged in a lateral array each separated by an adjacent support assembly. Each spray gun module has a central liquid passage communicating with a spray nozzle and a transversely oriented liquid inlet port communicating through an outer side of the spray gun module for connection with an independently controllable liquid supply. The spray gun modules further include a recirculation port communicating between the central passageway and a recirculation conduit in an adjacent support assembly. A control valve of each module is operable when in open spraying position for blocking communication of liquid from the central passageway to the circulation port and when in a valve closing position blocking the liquid flow to the spray nozzle while redirecting liquid from the liquid inlet to the recirculation port for recirculation through the manifold array.

Abstract: A fuel injector assembly has a control valve body and a plurality of end caps. End cap locating holes are formed into a mating surface of each end cap, and control valve body locating holes are formed into each mating surface of the control valve body. Locating pins inserted into the end cap and control valve body locating holes each have a fixed portion that affixes the locating pins to either the control valve body or the end cap. In the event of failure of a locating pin between the fixed portion and a free portion of the pins, the free portion maintains alignment of the control valve body locating holes with the end cap locating holes.

Abstract: An injector for injecting a reagent into an exhaust stream includes an outer tube extending through an electromagnet and surrounding an inner tube. A first end of the inner tube is sealingly fixed to an inner surface of the outer tube. A guide member and an orifice plate are each sealingly fixed to the inner surface of the outer tube. A second end of the inner tube is aligned by the guide member. A moveable valve member includes a pintle head guided by the inner surface of the outer tube to align the valve member with an orifice extending through the orifice plate.

Abstract: A fuel injector for an engine is disclosed. The fuel injector may have a fuel nozzle with at least one injection orifice, and a needle element movable within the fuel nozzle between a first position at which the needle element inhibits fuel flow and a second position at which fuel flow is substantially uninhibited. The fuel injector may also have a control chamber located at a base end of the needle element, a body, and a control valve disposed within the body and movable to selectively drain the control chamber, thereby causing the needle element to move between the first and second positions. The fuel injector may further have an armature disposed within an armature cavity of the body and selectively energized to move the control valve, and a pressure reducer disposed within the body and configured to reduce a pressure of the armature cavity.

Abstract: An injector for injecting a reagent includes an axially translatable valve member positioned within a housing. An electromagnet is positioned within the housing and includes a coil of wire positioned proximate the valve member such that the valve member moves between a seated position and an unseated position relative to an orifice in response to energizing the electromagnet. A connector coupled to the housing includes an inlet tube concentrically aligned with and surrounding a return tube. The inlet tube is adapted to receive pressurized reagent from a source of reagent. The return tube is adapted to return reagent to the source.

Abstract: In certain embodiments, a fuel injector includes a wall separating a fuel passage from an air passage. The fuel injector also includes a fuel injection port extending from a first side of the wall to a second side of the wall for injecting a flow of fuel from the fuel passage into a flow of air in the air passage. In addition, the fuel injector includes first and second feedback lines extending from a downstream end of the fuel injection port to an upstream end of the fuel injection port. The first and second feedback lines are disposed on opposite sides of the fuel injection port. In addition, the first and second feedback lines are disposed entirely within the wall.

Abstract: In a method for injecting fuel into the combustion chamber of an internal combustion engine, the fuel is fed by at least one prefeed pump from a tank to at least one high-pressure pump and the high-pressure fuel fed by the high-pressure pump is supplied to the injector, wherein the injector has an injection nozzle with an axially movable nozzle needle protruding into a control chamber which can be fed with fuel under pressure and whose pressure is controlled by a control valve which opens or closes at least one inflow or outflow duct for fuel. Between the prefeed pump and the high-pressure pump, a partial volume of the fuel is branched off as a flushing volume and supplied to a flushing channel of the injector, wherein the flushing volume is directly supplied to the control valve such that the flushing volume flows at least partially through the control valve and preferably mixes with the fuel from the inflow or outflow duct, respectively.

Abstract: An injector for injecting a reagent includes an axially translatable valve member positioned within a housing. An electromagnet is positioned within the housing and includes a coil of wire positioned proximate the valve member such that the valve member moves between a seated position and an unseated position relative to an orifice in response to energizing the electromagnet. A connector coupled to the housing includes an inlet tube concentrically aligned with and surrounding a return tube. The inlet tube is adapted to receive pressurized reagent from a source of reagent. The return tube is adapted to return reagent to the source.

Abstract: Multiple intensifier injectors with positive needle control and methods of injection that reduce injector energy consumption. The intensifiers are disposed about the axis of the injectors, leaving the center free for direct needle control down the center of the injector. Also disclosed is a boost system, increasing the needle closing velocity but without adding mass to the needle when finally closing. Direct needle control allows maintaining injection pressure on the fuel between injection events if the control system determines that enough fuel has been pressurized for the next injection, thus saving substantial energy when operating an engine at less than maximum power, by not venting and re-pressurizing on every injection event.

Abstract: A pressure swirl atomizer includes a nozzle having an exit orifice and a plurality of tangential swirl channels and a pintle that is movable within a pintle bearing between a closed position that closes the exit orifice and an open position that opens the exit orifice. The atomizer also has a pole piece having a channel, and the pole piece and the pintle are separated by an air gap when the pintle is in the closed position. A space between the pintle and the pintle bearing, the air gap, and the channel together form at least a part of a return path. Fluid from the tangential swirl channels drains through the return path when the pintle is in the closed position. To open the atomizer, a solenoid generates a magnetic force when energized, attracting the pintle toward the pole piece into the open position. A check valve disposed in the return path generates a fluid back pressure when the solenoid is de-energized to push the pintle toward the closed position.

Abstract: A fuel injector includes an injector body forming an actuator portion. An actuator bore is formed in the actuator portion and is at least partially defined by an inner surface and by an end surface. An actuator disposed in the actuator bore and has an outer surface such that a flow channel can be defined between the inner surface of the actuator bore and the outer surface of the actuator. A cooling flow passage is formed in the injector body, in fluid communication with the actuator bore, and is adapted to supply cooling fluid to the actuator bore. A drain passage is formed in the injector body, in fluid communication with the actuator bore. An internal cooling fluid flow path extends from the cooling flow passage, through the flow channel, and from the flow channel through the drain passage.

Abstract: A fluid injector for an exhaust treatment device is disclosed. The fluid injector may have a housing at least partially forming a fluid chamber. The housing may have a central axis, and a fluid passageway configured to supply fluid to the fluid chamber. The supply of fluid may be in a tangential direction relative to the central axis.

Abstract: The invention relates to methods and devices for spraying liquid during production processes requiring a uniform dispersion mixture, in particular in internal combustion engines requiring a fine fuel-air mixture, in the chemical industry for apparatuses for rinsing gas with liquid, which require a uniform coarse-dispersion mixture for reducing the drop entrainment of a rinsing liquid. The inventive method consists in collecting, during the liquid spraying, which is carried out by injecting a liquid at an angle to a gas flow, particles in those sectors of the spray cone that are appropriate to particles of specified sizes. The liquid spraying and collecting processes are carried out at one section of a laminar unidirectional gas flow. The collected particles form, when accumulated, a liquid that is returned for re-spraying.

Abstract: A water recycling and firefighting training system for efficiently practicing connecting water hoses between a water storage tank including a fire hydrant and a fire engine. The water recycling and firefighting training system generally includes a frame having wheels, a storage tank mounted to the frame, a fire hydrant mounted proximate the frame, wherein the fire hydrant is fluidly connected to the storage tank, a pump fluidly connected to the storage tank to pump water to the fire hydrant, and at least one intake fluidly connected to the storage tank for inputting water back within the storage tank. The water from the storage tank is circulated between the mobile trailer and a fire engine through a plurality of hoses in a closed-loop configuration.

Abstract: The invention relates to a fuel injector comprising an injector housing having a pressure chamber from which fuel subjected to a high pressure is injected into a combustion chamber of an internal combustion engine when the pressure in a control chamber expands into a pressure relief chamber by a control valve device. The aim of the invention is to create a fuel injector which has a long service life even though subjected to high pressures. To this end, the injector includes a low-pressure supply line which is connected to a low-pressure return line by a purge path extending through the pressure relief chamber.

Abstract: There are provided a fuel nozzle apparatus, a gas turbine, and a method of controlling a fuel nozzle apparatus, that prevent an occurrence of caulking while meeting the requirements of exhaust gas regulations. There are provided: a fuel pump that feeds fuel; a fuel flow passage formed with a circulation flow passage through which the fuel flows; a flow controller that controls a flow rate of the fuel flowing from the fuel pump into the circulation flow passage; a circulation pump that circulates the fuel within the circulation flow passage; a nozzle section formed with an injection nozzle that injects the fuel from the circulation flow passage to the outside; and an injection controller that controls an injection amount of the fuel to be injected from the injection nozzle.

Abstract: Provided is a nozzle tip assembly having a radially inner annular wall and a radially outer annular wall at least partially surrounding the radially inner annular wall and forming therebetween a flow passage for routing air from an upstream end of the nozzle tip assembly to a downstream end of the nozzle tip assembly. Additionally, the nozzle tip assembly has a bleed path for bleeding air from the downstream end of the flow passage into a heat shield that surrounds a fuel delivery device that directs fuel to a plurality of spraywells.

Abstract: A fluid injector for use in an exhaust treatment system is disclosed. The fluid injector may have a nozzle portion, a heater associated with the nozzle portion, and a controller in communication with the heater. The controller may be configured to recognize a condition triggering a purge event of the fluid injector. The controller may also be configured to activate the heater to purge the fluid injector in response to the recognized condition.

Abstract: An injector for an injection system is provided, including a first opening, a second opening, an open position and a closed position. The first opening is for spraying the fluid out of the injector, and the second opening is for allowing the fluid to exit the injector. When the injector is in the open position, the injector sprays the fluid from the first opening and the flow of the fluid to the second opening is substantially blocked. When the injector is in the closed position the injector allows the fluid to exit the injector from the second opening. The injector substantially blocks the spray of the fluid from the first opening when the injector is in the closed position.

Abstract: Disclosed is a fuel injection nozzle comprising a cooling duct (6) that is disposed in the final region of a housing (1), which faces the combustion chamber. In order to cool the zones that are subjected to high thermal stress, the cooling duct (6) is positioned closer to the bore (2) of the valve needle than to the external face of the housing (1) and is provided with a cross-sectional area that has a width corresponding to no more than the height which extends in the axial direction of the nozzle.

Abstract: The invention relates to an injector for injecting fuel into a combustion chamber of an internal combustion engine. The injector is actuated by an actuator and is connected to a fuel supply line via which fuel is supplied under system pressure. At least one injection opening can be opened or closed off by an injection valve member, which is activated by a control piston via a control chamber to which the control piston and a piston section of the injection valve member are exposed with respective pressure faces. The control piston is a valve piston of a control valve. The pressure face of the control piston and the pressure face of the piston section of the injection valve member are exposed to the control chamber at the same side. The control piston and the piston section of the injection valve member also enclose a further control chamber which is connected to a fuel return line when the control valve is open and to the fuel supply line when the control valve is closed.

Abstract: An injection nozzle having a main body portion with an outer peripheral wall is disclosed. The nozzle includes a plurality of fuel/air mixing tubes disposed within the main body portion and a fuel flow passage fluidly connected to the plurality of fuel/air mixing tubes. Fuel and air are partially premixed inside the plurality of the tubes. A second body portion, having an outer peripheral wall extending between a first end and an opposite second end, is connected to the main body portion. The partially premixed fuel and air mixture from the first body portion gets further mixed inside the second body portion. The second body portion converges from the first end toward said second end. The second body portion also includes cooling passages that extend along all the walls around the second body to provide thermal damage resistance for occasional flame flash back into the second body.

Abstract: An internal combustion engine system has an internal combustion engine with an intake for air and an exhaust for products of combustion. The engine has a turbocharger for pressurizing intake air in response to passage of the products of combustion. An exhaust aftertreatment device receives the exhaust from the engine to filter diesel particulates. A device for regenerating the exhaust aftertreatment device has a feed line and nozzle for injecting duel upstream of the exhaust aftertreatment device on a periodic basis. A system and method for purging the fuel line and the nozzle utilizes pressurized air from the engine turbocharger via an air tank when the regenerating device is not injecting fuel.

Abstract: One embodiment of the present subject matter includes a system which includes a tank, a conduit is adapted to carry a recirculating supply of fluid from the tank and into the tank, and at least one injector adapted to dispense fluid from the recirculating supply of fluid into a chamber.

Abstract: A fuel injector is provided. The fuel injector includes a nozzle, a cooling assembly, and a tip coupled to the nozzle. The tip includes a base including a cooling channel defined therein, a first transition member extending outwardly from the base and in flow communication with the cooling channel, and a second transition member extending outwardly from the base and in flow communication with the cooling channel, wherein the base, the first transition member, and the second transition member are formed integrally together. The tip is configured to couple to the cooling assembly to channel a flow of cooling fluid through the cooling channel via the first transition member and the second transition member.

Abstract: Multiple intensifier injectors with positive needle control and methods of injection that reduce injector energy consumption. The intensifiers are disposed about the axis of the injectors, leaving the center free for direct needle control down the center of the injector. Also disclosed is a boost system, increasing the needle closing velocity but without adding mass to the needle when finally closing. Direct needle control allows maintaining injection pressure on the fuel between injection events if the control system determines that enough fuel has been pressurized for the next injection, thus saving substantial energy when operating an engine at less than maximum power, by not venting and re-pressurizing on every injection event.

Abstract: The present invention relates to a spill return nozzle, particularly suitable for use in gas cooling, characterized in that, alongside the ducts for discharge and return of the flow of liquid, it is provided with means suitable to convey a flow of air toward the outlet of the nozzle. With the nozzle according to the present invention it is possible to obtain an output jet with optimized shape and dimensions of the atomized droplets, thereby increasing cooling efficiency in the case of use of the nozzle in gas cooling processes.

Abstract: A hot melt adhesive material application system is disclosed wherein both the control module and the dispensing nozzle are effectively provided with internal alternative flow paths. A fixed orifice is internally incorporated within the dispensing nozzle such that when the hot melt adhesive material is not being supplied to the dispensing nozzle and its discharge orifice, the hot melt adhesive material can be recirculated through the dispensing nozzle and the control module in accordance with controlled backpressure parameters which correspond to the supply pressure which is characteristic of the hot melt adhesive material being supplied to the dispensing nozzle and its discharge orifice.

Abstract: Spray apparatus of the kind having a liquid feed line connecting a supply of spray liquid and at least one spray nozzle, a return line from the spray nozzle to the supply and a pump for moving spray liquid from the supply to the at least one spray nozzle and for returning spray liquid from the at least one spray nozzle to the supply when the liquid is not being sprayed, characterised in that the liquid return line serves as at least a portion of the feed line when spraying.

Abstract: An improved atomizer, in which the liquid to be sprayed is circulated around the nozzle tip to prevent degradation of the liquid in hot environments. The circulation is controlled by a valve, which permits the liquid to circulate even when no liquid is being sprayed.

Abstract: A fuel injector provided with an injection valve comprising a mobile plunger; an injection jet having a plurality of first through-holes made starting from a chamber arranged downstream from the injection valve; a supporting body having a tubular shape and comprising a supply channel; and a sealing body, in which a valve seat of the injection valve is defined and the injection jet is provided; the sealing body is monolithic and has a disc-shaped plug member passed through by the injection jet, and a guide member, which rises up from the plug member, is tubular in shape, receives within it the plunger and has an external diameter smaller than the internal diameter of the supply channel, so as to define an external annular channel for the fuel; in the lower part of the guide member there are provided a number of second through-holes which open into the valve seat.

Abstract: A fuel injector is provided with a lower nozzle body which is cooled with a small amount of metered fuel. In one embodiment, a blind passage is formed to extend from the upper portion to the lower end of the injector nozzle valve element. A transverse passage is formed in the nozzle valve element connecting the blind passage and the nozzle bore. Rail pressure causes a metered amount of fuel to flow through the nozzle bore, the transverse passage and upwardly along the blind passage to the drain passage. Inward cooling occurs by providing more surface area over which the fuel flows. In another embodiment, a sleeve is formed to fit over an existing nozzle to form a passage surrounding the injector tip. An orifice is located in the nozzle housing to connect the nozzle cavity with the annular passage thereby providing a small amount of fuel to drain.

Abstract: A fuel injector is described, particularly for fuel injector systems of internal combustion engines, including an actuator, a valve needle actuatable by the actuator for actuation of a valve-closure member, which together with a valve-seat surface forms a sealing seat, and a swirl device, having at least one swirl channel through which fuel flows having a tangential component regarding a longitudinal axis of the fuel injector. The axial position of a bypass disk, which is mechanically linked to a valve needle, determines a cross section of at least one bypass channel, which bypasses the at least one swirl channel without a tangential component.

Abstract: Spray apparatus comprising a spray carrier or liquid reservoir (1), a loop circuit, a first pump (2) for feeding spray liquid from the liquid reservoir (1) to the loop circuit (A, B, C, D), a spray chemical reservoir (5), chemical injection means for injecting spray chemical from the spray chemical reservoir (5) into the loop circuit (A, B, C, D), a spray nozzle (6), a valve (20) selectively connecting the spray nozzle (6) to the loop circuit (A, B, C, D), and a second pump (4) in the loop circuit (A, B, C, D) for continuously circulating spray liquid and spray chemical in the loop circuit (A, B, C, D).

Abstract: A manifold block for controlling the flow of liquids and useful in the application of paint to automotive vehicles and in other, similar, applications is provided. The manifold block houses at least one liquid inlet supply channel, at least one liquid outlet return channel, and an applicator channel in microvalved connection with the inlet channel and the outlet channel, which channels meet at a common intersection in adjacent proximity to the microvalve. Stagnation in any of the channels in either the “open” or “closed” mode of operation of the microvalve is substantially eliminated. A stacked array of a plurality of these manifold blocks may be interconnected through a common applicator channel.

Abstract: Apparatus and method for spray coating of a horizontally moving web uses a spray-down unit that sprays downwardly onto the web and a spray-up unit that sprays upwardly onto the web. Each unit has adjustable cut-offs that control the length of the spray pattern by intercepting end portions of the spray pattern. The cut-offs of each unit can be adjusted to block a spray emission opening so as to prevent the entrance of contaminants when the unit is not in operation. Fluid intercepted by the cut-offs is returned for re-use. Both units are supported on a frame, and the spray-down unit can be moved away from the spray-up unit.

Abstract: A liquid spraying system having a spray head and a recirculating liquid supply system for directing pressurized supply liquid to the spray head with a portion of the liquid being directed from the spray head as a discharging spray and a portion of the supply liquid exiting the spray head as a return liquid. The liquid supply system includes two separate selectively pressurizable liquid containable tanks each having a respective fluid conduit coupled to the spray head. The liquid supply system has (1) a first cycle of operation in which the first tank is pressurized and the second tank is depressurized so that pressurized liquid is supplied from the first tank to the spray head and return liquid is directed to the second tank, and (2) a second cycle of operation in which the second tank is pressurized and the first tank depressurized so that liquid is supplied to the spray head from the second tank and return liquid is directed to the first tank.

Abstract: A cleaning attachment for a spray gun for effectively and efficiently cleaning a paint spray gun after use. The cleaning attachment for a spray gun includes a hose having a first end and a second end; and also includes a lid assembly including a lid having a wall for securely closing a top of a paint container mounted to a spray gun with the lid assembly further having a hose fitting disposed through the wall of said lid and being connected to the hose and with the lid assembly also having a ventilation assembly being securely disposed through the wall of said lid; and further includes hose connectors being securely attached to the first and second ends of the hose.

Abstract: A manifold block for controlling the flow of liquids and useful in the application of paint to automotive vehicles and in other, similar, applications is provided. The manifold block houses at least one liquid inlet supply channel, at least one liquid outlet return channel, and an applicator channel in microvalved connection with the inlet channel and the outlet channel, which channels meet at a common intersection in adjacent proximity to the microvalve. Stagnation in any of the channels in either the “open” or “closed” mode of operation of the microvalve is substantially eliminated. A stacked array of a plurality of these manifold blocks may be interconnected through a common applicator channel.

Abstract: A combination nozzle for applying a developer material and a washing solution material at different time intervals to a photoresist material layer disposed on a wafer is provided. The combination nozzle includes a number of developer nozzle tips connected to a developer supply line and a number of washing solution nozzle tips connected to a washing solution supply line. The developer supply line and the washing solution supply line ensure that the developer material and the washing solution material are always substantially isolated from one another. Furthermore, the developer nozzle tips and the washing solution nozzle tips are arranged so that developer material and washing solution material do not come into contact with one another. The volume of the material and the volume flow of the material can be controlled by electronically controlled valves.

Abstract: An injector for delivery of a fluid into a stream of hot gas is disclosed. The injector has a valve body with an elongated chamber in fluid communication with an orifice. A valve seat surrounds the orifice. A valve plunger is disposed within the chamber, an end of the plunger being adapted to sealingly interengage the seat. The plunger is slidably movable between an open and a closed position to open and close the orifice. A fluid inlet and an outlet are disposed within the valve body to deliver fluid to an annular fluid passageway in the chamber adjacent to the valve seat. Fluid is circulated through the annular passageway to cool the valve and a portion of the fluid is expelled through the orifice when the orifice is opened. The plunger is biased into the closed position by a coil spring and movable into the open position by a solenoid actuator mounted atop the valve body.

Abstract: A solenoid operated liquid spray device which includes a flow control module disposed within the solenoid coil of the device for controlling the direction of pressurized through the spray device. The flow control module includes separate inlet and outlet portions which can be easily disassembled for on line service without necessity for disconnecting fluid supply and electric power lines. The outlet portion is secured to the inlet portion by an adjustable retainer which is selectively positionable for adjusting the operating stroke of the valve plunger without the necessity for damaging relative rotational movement between the valve plunger needle and valve seat. The module portions further define a first flow passageway communicating between a liquid inlet and discharge nozzle and a second or return passageway communicating with a heated liquid supply for enabling liquid in the spray device to be maintained at an optimum heated temperature when a spraying operation is interrupted.

Abstract: A fuel nozzle configuration for a fluid-fuel burner includes a main axis, a backflow region, a fuel nozzle and an inflow region disposed along the main axis between the fuel nozzle and the backflow region. A swirl flow of fuel can be generated in the inflow region. The backflow region has an annular gap adjacent the inflow region which narrows in the direction downstream of the inflow region and merges into a backflow conduit. An oil burner for a gas turbine uses the fuel nozzle configuration and a method is provided for regulating the fuel supply of a fluid-fuel burner.