Abstract: A gas handling manifold for use in metal-organic chemical vapor deposition systems, the manifold having a radial configuration with each vent/run valve equidistant from the center. Ensuring that gases switched simultaneously arrive in a reactor vessel substantially simultaneously, alleviating problems caused by intermediate reactions in the manifold. The manifold has minimal unflushed area (dead volumes) allowing incompatible materials to be handled in tandem.

Abstract: A mixing valve for mixing a plurality of liquids comprises a number of valve units corresponding to the number of liquids to be mixed, each consisting of one inlet for liquid, one outlet and one ball valve having a valve ball and a valve seat.

Abstract: Apparatus for minimizing water hammer and/or shock waves resulting from closure of a valve member disposed for movement into and out of closing arrangement in valve means included within a fluid flow system. The apparatus comprises a piston and cylinder arrangement having a circular path of travel, the cylinder being formed in part as an incised channel means in a body means, within which body means a rotatable sleeve means is disposed in a longitudinal bore. The inner portion of the cylinder is the outer surface of the rotatable sleeve, and a fluid chamber is formed by said combination. The piston means projects outwardly from the sleeve and is disposed within the channel means, so that the piston means sweeps the cylinder volume as the sleeve is rotated. An adjustable orifice is provided in the cylinder means to constrict the flow of fluid in said cylinder on rotation of the sleeve.

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: Two liquid comonomers are fed into a catalytic reactor through two separate concentric flow courses having pass through in a Tee-fitting connected to the reactor by a nipple. The two flow courses have spaced apart termination locations within the reactor and there is thereby avoided any possibility of commingling or cross-contamination of the two liquids at any time before they outflow within the reactor from their respective flow courses.

Abstract: In a vacuum distributor box with a suction connection and several vacuum connections, all the vacuum connections are equipped with non-return valves open only when vacuum lines are inserted, both the seals of the box housing itself and the those of the vacuum lines relative to the box housing and the valve sealing seats of the non-return valves being incorporated in a diaphragm seal clamped on all sides between two housing parts.

Abstract: A multiflavor valve assembly and a multiflavor tower using such valve assembly. The valve assembly uses microprocessor controlled ratio control. The tower can dispense six flavors through a single nozzle assembly, while using significantly less counter space than six separate valves would require. The valve assembly uses two water flow modules, six syrup flow modules, one control board with a microprocessor, one interface board with its microprocessor, and thirteen touch buttons on the selection panel.

Abstract: A multi-function electromagnetic valve assembly is provided which combines a number of housing combinations of electromagnetic valves into a single housing or connects the valves such that the valve inlets and/or exits are separate and/or merged to form a variety of combinations. Each of the electromagnetic valves in the assembly may have a manual operation unit and a one-way valve piston incorporated to have functions, such as manual operation in addition to automatic operation, one-way function and adjustable opening height of the valve. The use of a lot of manual valves and one-way valves can be avoided by using the present valve assembly. For the pilot type electromagnetic valve, a throttling mechanism can also be incorporated in the assembly and thus, the electromagnetic valves can compensate for wear of the valve, can adjust operating time, can operate with different media having different viscosity and can be isolated from other valves.

Abstract: A sink handle for use in a water faucet, which may be operated at a minimum use of manual force is disclosed. The sink handle generally includes a valve spindle contained within a body, with the spindle being rotatable by a fluid flow. The sink handle also includes a seat bearing adjacent to said valve spindle and a cushion upon which said spindle is rotatable. A bonnet, which may be opened and closed, permits a flow of a fluid therethrough by opening a movable closure element. The bonnet is rotatable as a result of the rotation of the valve spindle. In preferred embodiments of the invention, O-rings function as the cushion. Additionally, a seat bearing may be impregnated in polytetraflouroethylene.

Abstract: A plug valve, a check valve for a plug valve, a pressure regulator for a plug valve, and a check valve for a conduit. A plug valve having a plug closure member for sealing off the open end of a conduit and thereby preventing flow of a first fluid through the conduit, the plug closure member connected to a hollow stem, a channel for the flow of a second fluid extending through the hollow stem and plug closure member, the plug closure member and stem movable in a guide tube toward and away from the open end of the conduit, the plug closure member seatable in the open end of the conduit. In one embodiment the plug valve may have a pressure regulating member in the channel through which the second fluid flows. In another embodiment a check valve may be disposed within the channel to prevent flow of the first fluid down the hollow stem. The pressure regulating member and check valve may be combined in one embodiment. A conduit for use with a plug valve, the conduit having a check valve.

Abstract: A faucet mixing battery including a casing adapted to be fixed to a surface having hot and cold water outlets; first and second coupling ports carried by the casing, adapted to be coupled respectively to the outlets; a mixing spout extending from the casing; an electric water heating unit located in the casing and having a unit inlet coupled to at least the first coupling port and having a unit outlet coupled to the mixing spout; manual control means mounted on the casing for controlling the flow from the coupling ports to the mixing spout.

Abstract: A bleed flow modulator is used in conjunction with pressure regulating valves regulating bleed air pressure from each engine to a common manifold. The bleed flow modulator monitors the pressure drop across a heat exchanger, which pressure drop is proportional to flow rate of bleed air through the heat exchanger. By providing a limited authority negative feedback signal to the pressure regulating valve from the bleed flow modulator, flow rate of bleed air from each engine to the common manifold is kept near a desired uniform value, thereby achieving balanced flow extraction of bleed air from the aircraft engines.

Abstract: A valve block assembly with internal delivery channels and a common outlet channel is provided. The assembly has two delivery valve surfaces with access to the common channel. The common channel comprises easily cleaned linear sections running alternately from one surface to the other, and connecting surface grooves at the valve sites. Diaphragm valves with relief grooves to accommodate deformation of the diaphragm are provided. The V-like cross-section of the connecting grooves of the common channel and the conical shape of the nearby outlet of a delivery channel assure that the valve may be opened by only a small actuating force. 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 protein sequencer to supply reactants without cross-contamination or oxidative decomposition.

Abstract: A valve for a gas vessel has a gas-pressure line which leads to a valve chamber and which is closed by means of a closure valve disposed in the valve chamber. The valve for a gas vessel also includes a gas-takeoff line and is configured so that the valve chamber and the gas-takeoff line as well as other gas conducting spaces at the output end of the valve can be purged in the operational ready condition of the valve. The application and removal of the purging flow occurs over different paths and the purging takes place independently of the actuation of the closure valve. For this purpose, a purging line which is equipped with a purging valve is provided. The purging line opens in the valve chamber of the closure valve.

Abstract: A swivel spout sub-assembly is disclosed for use on water faucets with the swivel spout sub-assembly being of simplified configuration to provide facile assembly and disasembly thereof. The swivel spout sub-assembly includes a water output nipple on the faucet and a swivel spout structure including a shroud body having an axial bore in which the nipple is coaxially disposed. The shroud body and the nipple are especially configured to interact with each other to provide a means for assembling the spout structure on the nipple, allow the spout structure to be moved in a swivel motion about the nipple and prevent unintentional removal of the spout structure from the nipple.

Abstract: A retaining nut for a faucet assembly which serves the dual purpose of mounting the valve body to the faucet housing while also retaining the valving member within the valve body. The nut is preferably made of plastic and includes a resilient annular flange which cooperates with the faucet housing to seal the periphery of the valve body. The resilient properties of the annular flange maintain engagement despite movement and separation during use of the faucet and initial manufacturing tolerances. The outer surface of the faucet nut includes a series of ribs to facilitate manual removal in addition to the hexagonal configuration for removal using an appropriate hand tool.

Abstract: An improved radially designed gas manifold is disclosed for the precise mixing and admission of a plurality of gases into a processing chamber, and being characterized by rapid switching from one gas to another or from one set of gas mixture to another set of gas mixture, and yet occupying a minimum of dead space. The radial gas manifold includes a body provided with an axial mixing channel and a plurality of gas conduits formed in the body in parallel spaced relation to the mixing channel and connected thereto. A pair of annular ducts also are formed in the body adjacent its respective ends, with one of the pair connected to both the mixing channel and to each of the gas conduits, and the other of the pair connected to each of the gas conduits and being vented. A pair of valves are mounted in tandem for each of the gas conduits and means are provided to alternately open and close one of the pair of valves.

Abstract: A valve system comprising a housing, a main inlet to the housing for pressurized fluid communicating with an outlet from the housing, an auxiliary inlet to the housing for pressurized fluid communicating with the outlet, valve means in the housing movable to open or close communication between the main inlet and the outlet and between the auxiliary inlet and the outlet, and means exposed to the exterior of the housing and actuated by the valve means for indicating the position of the valve means relative to the main inlet and the auxiliary inlet.

Abstract: A proportioner apparatus for mixing together at least two fluids in controlled, preselected proportions, comprises first and second fluid inlet reservoirs, first and second fluid inlets coupled respectively for delivering fluids to the first and second reservoirs, first and second outlets coupled respectively with the reservoirs for receiving a flow of fluid therefrom, each said inlet having a control valve for controlling the flow of fluid therethrough in response to predetermined control signals, and each said reservoir having level sensor therein for producing the control signals in accordance with the level of fluid therein.

Abstract: The invention provides a method and an apparatus for drawing a liquid from a reservoir and regulating the output and pressure of the liquid in order to inject it in precise proportions into another liquid flowing in a distribution system with a predetermined pressure and output. A pump is disposed in a principal circuit which connects the reservoir to the distribution system. An intake of the pump is connected to the reservoir and an outlet of the pump is connected via an electrically controlled valve to the system. Prior to injecting liquid additive into the system, the output and pressure of the principal circuit may be preset by isolating the reservoir from the pump intake and connecting the pump intake to an auxiliary circuit having a water inlet controlled by a valve. After presetting, the pump intake may be connected to the reservoir to draw liquid additive therefrom and inject the liquid additive into the system.

Abstract: The invention relates to a system for supplying noxious gas into an exposure chamber containing plants which are to be exposed, under controlled conditions over long periods of time, to an atmospheric gas which is given a defined composition by the introduction of the noxious gas or gases comprising:a circuit arrangement for controlling the mixing of the atmospheric gas with the noxious gas(es) including a respective mass flow regulator equipped with a subsequently connected shut-off valve provided in the respective gas inlet conduits with the shut-off valves being switched jointly; a premixer stage connected to the gas inlet conduits for homogeneously mixing the atmospheric and noxious gases; a buffer reservoir for the thus composed mixture of atmospheric and noxious gases; and a computer controlled dosaging device for the mixture of atmospheric and noxious gases to be introduced into the exposure chamber.

Abstract: A fluid supply apparatus includes a pressure reducing valve. The inlet passageway of the valve is connectable to a first fluid supply and the outlet passageway of the valve is connectable to a fluid user capable of generating a subatmospheric pressure. The actuator of the valve biases the valve to a closed position. A pressure sensing line communicates the pressure from the outlet passageway of the valve to the actuator in opposition to bias of the actuator. The presence of a subatmospheric pressure at the outlet passageway of the valve will move the actuator and valve towards the open position allowing fluid to flow from the first fluid supply to the fluid user with the valve reducing the non-subatmospheric pressure of the fluid in the first fluid supply to the sub-atmospheric pressure of the outlet passageway. A flow dividing vane is provided in the valve between the orifice of the valve and the outlet passageway in order to minimize pressure fluctuations in the outlet passageway.

Abstract: A variable colorant blender is provided for use as adjunct to an airbrush (A) or other spray gun. It includes a plurality of metering valves or similar devices which are actuatable wholly independently of one another for enabling the user to obtain and continuously change any colorant blend and also to perform a rapid rinsing. In preferred embodiments electric metering valve actuators are provided, which are energized by electronic circuit means contained in a control box (16) remote from that portion (10) of the blender which is affixed to the airbrush or other spray gun in replacement of the usual colorant-containing vessel 1, such control box having slides (41) for presetting and changing the proportions of colorants in the discharged blend, and possibly also a push-button (42) for controlling the amount of cleaning liquid (solvent).

Abstract: A gas analyzer for simultaneously measuring a plurality of ingredients of a sample gas has a sample gas-introducing passage, a sample gas, flow-divider connected to the gas-introducing passage for dividing the sample gas into a plurality of gas flows in a desired flow-dividing ratio, a sample gas-diluter connected to the flow-divider for diluting the plurality of divided sample gas flows, and a plurality of gas concentration detectors, one for each gas flow, and connected in parallel with each other to said sample gas-diluter for receiving the respective diluted gas flows from the sample gas-diluter.

Abstract: Briefly, the present invention comprises the improvement in a valve arrangement for controlling the flow of a fluid including a valve block having at least one substantially flat valving site on a surface thereof, the valve block defining passages communicating with the valving site through openings, a resilient diaphragm covering the valving site and forming a fluid tight seal with the valve block along the periphery of the valving site and a closure element having a substantially flat closure surface, the closure element being actuable between an open condition wherein the closure surface is retracted a preselected distance from the valving site and diaphragm, and a closed condition wherein the closure surface forces the diaphragm against the valving site; whereby the diaphragm can be urged away from the valving site by fluid pressure in the passages and the closure element is in the open condition, establishing a valve chamber above the valving site for fluid flow between the passages, and if forced agains

Abstract: A remotely controllable mixing system (210) in which a plurality of mixing assemblies (10a-10e) are arranged in an annular configuration, and wherein each assembly (10) employs a central chamber (16) and two outer, upper and lower, chambers (12, 14). Valves (18, 20) are positioned between chambers, and these valves (18, 20) for a given mixing assembly (10) are operated by upper and lower control rotors (29), which in turn are driven by upper and lower drive rotors (270, 270b). Additionally, a hoop (278) is compressed around upper control rotors (29) and a hoop (278b) is compressed around lower control rotors (29) to thus insure constant frictional engagement between all control rotors (29) and drive rotors (270, 270b). The drive rollers (270, 270b) are driven by a motor (213).

Abstract: Air is detected from opposing ends of a trough-like continuous contour which defines a guide path for the two opposing streams. The air streams will be attached to flow along the trough and where the oppositely directed streams impact or impinge upon each other, they will be deflected normal to their path and the two combined streams will be projected or directed perpendicularly outwardly from the trough in the form of a fan-shaped jet. By controlling the velocity of the two opposing jets, the point of impact or impingement of the two jets can be moved along the trough with the trough defining the path of movement of the point or virtual outlet of outward projection of the combined jets. In preferred embodiments, the defrost and heating and air conditioning outlets for automobiles incorporate the invention so as to avoid protrusions and provide a continuous clean and unbroken appearance.

Abstract: The present application discloses a liquid mixing method and apparatus which can mix two or more liquids in selected proportions. Each constituent fluid is introduced in a chamber provided with liquid level controlling devices that establish a liquid free head space which is connected to a source of pressure gas operative to pump or displace liquid from the chamber through a metering device prior to the introduction to a chamber where the constituent fluids combine.

Abstract: The present invention relates to a valve assembly for an oxygen regulator. Two valves mounted in a housing supply oxygen and air flows to a manifold in the housing for subsequent delivery to a recipient's mask. The valves operate as electromechanical servoactuators. The nozzle of each valve serves as a magnetic pole for a surrounding voice coil bobbin. The bobbin fits over the nozzle and has a solid center portion adapted to seal the opening. When current is applied to the voice coil, a force is generated in the bobbin causing it to move toward or away from the nozzle. Movement of the bobbin away from the nozzle varies the opening of the valve and allows gas to be admitted into the housing. A linear variable differential transducer connected to the bobbin senses when proper displacement corresponding to valve opening is attained.

Abstract: A dual motion valve (A) includes two dual motion valve assemblies (10, 12) having a rotary input which allows the benefits of applying both rotary and axial motion to a rotary sealing element (24) having a plurality of ports (43). The motion of the rotary sealing element during actuation provides axial engagement of the rotary sealing element with a stationary valve plate (22) which also has ports (38). Fluid passages are created through the valve when the ports of the rotary sealing element are aligned with the ports of the stationary valve plate. Alignment is achieved through rotation of the rotary sealing element with respect to the stationary valve plate. The fluid passages provide direct paths which minimize fluid turbulence created in the fluid as it passes through the valve (A).

Abstract: A method and apparatus for supplying dyes to a dyeing apparatus, dyes being selected to yield one of a group of colors. A plurality of tanks of dye is provided, and a circuit leads from each tank to a selected one of a pair of valves that may either direct the dye to the dyeing apparatus or direct the dye to be recirculated. The flow through each valve is metered so a particular rate of flow can be established. One group of the valves provides dye to the dyeing apparatus while another group of the valves recirculates dye to establish another color ready to be provided to the dyeing apparatus. The colors are defined in terms of the tanks and rate of flow from the tanks, so a large group of colors can be defined and stored in a computer, and the computer can control valve position and pump speed to control the color produced by the dyeing apparatus.

Abstract: The valve has flexible resilient tubes which respectively communicate with the fluid supply conduits and which are pinched by control members to control fluid flow. Each tube has a reduced-diameter center or neck portion intermediate its ends which is engaged by the control member. The internal cross section of the neck portion is circular when relaxed and when pinched closed does not require any greater cross-sectional space than do the tube ends. Single-control and dual-control embodiments are disclosed. In the dual-control embodiment the two tubes are carried in a single cartridge assembly which is removable as a unit.

Abstract: A faucet valve comprised of a valve body having a valve seat onto which is adapted to movably and freely rest a disc-shaped valve plug. An operant shaft having a central cam surface is journalled within the valve body, being arranged with the cam surface lying adjacent to the valve plug so that rotating or sliding the shaft causes the plug to tip off the valve seat. The plug is held in closed position solely by upstream pressure. A novel check valve is also disclosed for replacement of the standard washer in a faucet and for use with a "speedway" connection according to another embodiment. The faucet valve is adapted to be fixed to the spout of a tap assembly having hot and cold water, in combination with the check valve, the latter preventing backflow between the two faucet conduits in the event of a pressure differential. The faucet valve may be used independently as may the check valves.

Abstract: Apparatus for blending and destratification of outside and return air streams which are cooled or heated, as by fluid containing heat transfer coils, and discharged into a building. Gates control the flow and blending of outside and inside air in a casing in a region defined at its downstream end by the coils and at its upstream end by the gates which project into the region. The gates are pivotally mounted and vary the volume in the region, and also increase the velocity of air therein to prevent stratification. An array of sensors monitors the temperature of the air passing through the coils and controls the gates, especially when the velocity is low, thereby preventing any freezing of the fluid in the coils which can cause damage. The gates may be panels filled with insulation which provide a seal to protect the coils when the apparatus is not in use.

Abstract: A valve for multiple sequential operations such as biosynthesis, in which the valve body has a longitudinal groove as a common passage for a longitudinal sequence of local ports, and a unitary diaphragm controlled by a plurality of solenoid operable plungers opens and closes the local ports to the common passage by blocking fluid flow across the lands intervening between the local ports and the common passage.

Abstract: Gas mixing and flow smoothing apparatus for use in for example an anaesthesia system comprises a mixing chamber (8) which receives the flow of two or more gases via control valves (6,7). The mixing chamber (8) is adapted to absorb fluctuations in the pressure of the gases therein through the provision of for example a spring-loaded piston (not shown) which forms one wall of the chamber, and the pressure at the outlet (30) from the chamber (8) is maintained at a substantially constant pressure by means of a valve (9). If desired, further attenuation of the gas flow may be achieved through the provision of a second series arrangement of surge damper (11) and back pressure valve (10) located downstream from the valve (9).

Abstract: The invention relates to a sequentially controlled water mixer comprising a valve housing (1) with a cold water inlet connection (2) and a hot water inlet connection (3), and a common outlet (4), said casing defining a mixing chamber (5) between the inlets and outlet with a regulating chamber (6) located on the inlet side for housing an adjustable regulating switching valve (7) of substantially rotationally-symmetrical shape and with regulating apertures (8,9), said valve being adjustable to seal-off the inlet connections (2,3), or to control flow through the connections via said apertures (8,9). According to the invention the said inlet connections define recessed holes of larger dimension than respective hot and cold water pipes to be used therewith, and each hole accommodates a compression spring (27) and a seal (28) loaded by the spring to rest in contact with said switching valve (7) via a sealing surface which follows the contour of said switching valve.

Abstract: A spray assembly is disclosed which comprises a plurality of control valves disposed within a common housing each of which is independently actuatable whereby the flow of a plurality of fluids may be individually controlled for intermixing and delivery via a common outlet. The control valves utilized in the spray assembly of the present invention incorporate piston actuated plunger assemblies which are designed for extremely rapid operation whereby substantially maximum liquid fluid flow may be obtained almost instantaneously and rapid shut off may also be achieved.

Abstract: Briefly, the present invention comprises the improvement in a valve arrangement for controlling the flow of a fluid including a valve block having at least one substantially flat valving site on a surface thereof, the valve block defining passages communicating with the valving site through openings, a resilient diaphragm covering the valving site and forming a fluid tight seal with the valve block along the periphery of the valving site and a closure element having a substantially flat closure surface, the closure element being actuable between an open condition wherein the closure surface is retracted a preselected distance from the valving site and diaphragm, and a closed condition wherein the closure surface forces the diaphragm against the valving site; whereby the diaphragm can be urged away from the valving site by fluid pressure in the passages and the closure element is in the open condition, establishing a valve chamber above the valving site for fluid flow between the passages, and if forced agains

Abstract: The mixing valve includes a plurality of flow regulating assemblies (A) each of which independently regulates the flow of one of a plurality of fluids. Each flow regulating assembly includes a pressure displaceable structure (22) which is physically displaced by changes in pressure and a movable valving member (50) which is movable relative to a stationary valve seat (42) for adjusting the cross section of a flow path therebetween. The movable valving member is operatively connected with the pressure displaceable structure such that the cross section of the flow path varies generally in inverse proportion to the sensed pressure. A proportioning assembly (B) proportions back pressure from adjacent a mixed fluid outlet (132) between the flow regulating assemblies such that each flow regulating assembly regulates its fluid flow in accordance with the proportion of the back pressure accorded it.

Abstract: A method of manufacturing faucets and spouts, faucet inserts and faucets and spouts manufactured by the method. The faucet or spout includes an upper housing plate and a lower housing plate, a peripheral flange being provided on each of the housing plates such that the flanges mate with a seal disposed betweem them in fluid sealing relationship, the housing plates having spaced apart surfaces extending from their respective flanges to define a chamber. The faucet inserts include a valving member rotatably received within a housing member, the housing member having an internal conical surface adapted for mating engagement with an external conical surface of the valving member, the valving member having a port adapted to be reversibly aligned and misaligned with a port in the housing member for selectively allowing and shutting off fluid flow.

Abstract: A three-way valve for automatic sequencing of fluid flow from a syringe into an IV administration set comprises a housing which forms a fluid chamber having a first and a second inlet and an outlet. A sleeve having a fluid passageway normally closed by a check valve is slidably disposed within the fluid chamber for reciprocal movement between a first position and a second position for respective fluid sealing engagement with the first and second inlets. With the sleeve in the second position, fluid flows through the chamber from the first inlet to the outlet. Engagement of a syringe with the second inlet urges the sleeve into the first position to permit fluid flow from the syringe into the second inlet and through the chamber to the outlet. Upon emptying of the syringe, the syringe plunger seals the second inlet and urges against a probe that opens the check valve to permit resumption of fluid flow from the first inlet to the outlet.

Abstract: A mixing faucet, used for controlling the outflow of water from a hot water pipe and a cold water pipe by means of two globe valves. The faucet comprises a main body portion, a spigot, and two globe valves each of which is provided with a globe plug, a transmission rod, two wearing rings, a sealing ring, an adjusting collar, a fixing screw, and a faucet handle.

Abstract: The apparatus comprises a distributor device having two inlets connectible to two sources for supplying the gases to be mixed and a plurality of outlets each of which is connected to a first end of a respective capillary tube. The distributor device is arranged to connect each capillary tube to one or other of the two supply sources so that mixtures of the two gases are formed in a mixing chamber into which the other ends of the capillary tubes open, the mixtures containing the two gases in proportions which differ according to a number of capillary tubes traversed by each gas. The apparatus includes control means for causing the sequential formation of mixtures containing different proportions of the two gases and the supply of these mixtures to an outlet from the apparatus.

Abstract: A recirculating paint apparatus comprising a main body provided with a plurality of radially extending openings in communication with a main axially extending delivery channel, and a plurality of selectively operable valve assemblies for controlling communication between different color paints and the delivery channel is disclosed. Each paint is recirculated through its associated valve assembly right up to its valve for controlling flow through an orifice in communication with the common delivery channel so that all areas are subject to recirculating flow and any settling out of pigments or solids in the paint is prevented or minimized.

Abstract: An in-line blender for blending components, in the form of liquid or other fluent materials including a pipeline having a plurality of injection points, each injection point being connected to a set of selector valves and each selector valve being connected to a separate component source. Only one of these selector valves at a time is connected to the injection point. Between the set of valves and the injection point there is mounted a metering apparatus in the form of a positive displacement pump and a meter 14.

Abstract: The detonation gas for gas-detonatable blasting charges used in surface mining and the like is supplied by a portable self-contained delivery unit connected to the blasting charges by a network of small flexible tubing, which unit blends pressurized fuel and oxidizing gases from separate supply sources in predetermined proportions and regulates the separate flows of such gases in response to the backpressure imposed by the tubing network to maintain such proportions in the gas blend delivered to the tubing network. The separate gas flows are controlled by servo-actuated flow control valves actuated by a control gas pressure which is applied or released in response to such backpressure.

Abstract: A swivel spout construction for a faucet in which there is provided a composite spout defined by an elongated generally U-shaped shell and an elongated plate both molded from plastic material. The shell and plate define sealing flanges which are secured together by means of hot plate welding. The shell and plate together define end walls, sidewalls and an upper and bottom wall which form a waterway. A hollow, cylindrical spud extends from the bottom of the plate at the spout inlet and is retained in a cylindrical bore of the faucet underbody by means of a retaining ring and a hold down nut. The construction provides for a swivel spout which is suitable for kitchen use under relatively high hydrostatic pressures and with a capability to withstand water hammer and shock pressures generated by the opening and closing of a dishwasher inlet valve. The composite spout provides for a low cost esthetically pleasing design that has relative ease of manufacture as compared to other designs.

Abstract: Disclosed is an in-service test valve and system. The in-service test valve includes a body having a first chamber with a relatively small diameter bore and second chamber axially spaced apart from the first chamber and having a relatively large diameter bore. An imperforate shuttle is slidingly mounted in the valve body and includes a first piston slidingly sealingly mounted in the first chamber bore and a second piston slidingly sealingly mounted in the second chamber bore. An in-service inlet is provided in the valve body for introducing in-service pressure into the first chamber to apply sensing pressure to the first piston and urge the shuttle toward the second chamber. A test inlet is provided for introducing test pressure into the second chamber to apply test pressure to the second piston to urge the shuttle in the direction of the first chamber.

Abstract: An adjustable slotted orifice assembly for controlling the feed rate and dispersion pattern of high pressure impinging liquid reaction injection molding materials. In a preferred embodiment vibration of the variable orifice, opening particularly useful with low through puts, provides improved results.