Abstract: A float controlled valve has a float chamber for accumulating a fluid, a pivoting float arm having a float mounted on one end thereof for fluid level determined movement within the chamber, a pivotally mounted actuator arm coupled to the float arm by a magnet driver and having a first magnet mounted at one end of the actuator arm; a pivotally mounted control arm having a second magnet attached thereto, in magnet coupling relationship with the first magnet, and valve means coupled to the pivotally mounted control arm for controlling fluid flow from the chamber in response to movement of the float.

Abstract: A method and apparatus for cleaning cellular contamination in flow cytometer comprising the sequential use of a strong oxidizing solution, particle-free neutral pH fluid and a weak acid.

Abstract: A liquid propellant supply device for satellites comprises an inlet pipe connected to a source of pressurizing gas, an outlet pipe connected to a propellant distribution manifold and a main storage tank connected at an inlet orifice to the inlet pipe and at an outlet orifice to the outlet pipe. The main storage tank contains a capillary action propellant retention device between the interior of the main storage tank and the outlet pipe. The device further comprises, on the outlet pipe, starting from the main storage tank, a gas test device adapted to detect the presence in the outlet pipe of a significant quantity of gas followed by an auxiliary storage tank substantially smaller than the main storage tank and including a second capillary action propellant retention device separating the interior of the auxiliary storage tank and the distribution manifold.

Abstract: A liquid source container device is used for a liquid gas source for a semiconductor manufacturing device. This container device includes a main body for containing a source liquid, to which a gas supply line for transferring the source liquid, and a source liquid delivery line for delivering the liquid are connected. The gas supply line has first and second gas supply valves provided thereon, and the liquid delivery line has first and second liquid delivery valves also provided thereon. A section of the gas supply line which is located between the first and second gas supply valves and a section of the liquid delivery line which is located between the first and second delivery valves are connected with each other by means of a purge line which has a purge valve provided thereon.

Abstract: A proportioner apparatus is capable of proportioning and admixing at least two liquids at relatively low pressures. The proportioner apparatus has a pressurizable reservoir for each liquid and a mix reservoir. A fluid communication conduit provides fluid communication between the interior of the mix reservoir and the interior of the liquid reservoirs. The liquid reservoirs are pressurized with a pressurizing gas to cause flow from the liquid reservoirs into the mix reservoir. A discharge conduit of the mix reservoir discharges admixture therefrom. When flow ceases in the discharge conduit the flow into the mix reservoir is also stopped as by shutoff valves in the fluid communication conduit. The proportioner apparatus can also include a pump operably associated with the discharge conduit to enhance admixture flow to a pressurizable tank that holds the admixture for further downstream processing. The pressure downstream of the pump is usually higher than the pressure upstream of the pump.

Abstract: Apparatus and method for draining liquid from a vacuum line without interrupting the vacuum. The apparatus consists of a storage tank attached to a vacuum line by a drainage pipe having a one-way valve in the pipe permitting the flow of liquids away from the vacuum line and into the tank. A vacuum connection between the vacuum line and the tank through a three-way valve maintains the tank under vacuum while the three-way valve maintains the connection opened between the vacuum line and the tank. A high pressure line also connects to the tank through the three way valve. A sensor responsive to the level of fluid in the tank generates a signal to operate the three-way valve and simultaneously connect the high pressure line and disconnect the vacuum line from the tank. When the pressure condition in the tank is thus reversed, the tank is drained. The method described is that employed when using this apparatus to drain a vacuum line without interrupting the vacuum.

Abstract: Apparatus is provided for transferring a liquid, particularly liquids, such as molten sulfur which are difficult to handle, from a liquid supply, such as a molten sulfur tank truck, to another location, such as a pug mill in which a sulfur/asphalt pavement material is blended. The apparatus comprises a relatively small transfer vessel, which is connected, through a shutoff valve, to the liquid for receiving a gravity flow of liquid therefrom, and an air compressor for pressurizing the transfer vessel through a pressurized air conduit. A check valve installed in the transfer vessel adjacent the liquid inlet of the vessel prevents the trasfer of liquid from the vessel back into the supply when the vessel is pressurized. An electrically-controlled valve in the pressurized air conduit enables an associated control unit to control the flow of pressurized air into the vessel.

Abstract: An automated chemical storage and feed system for a use station to chemically treat and monitor a process at a use station where the process is being run, including one or more base tanks at the use station storing chemicals and having means intermittently or continuously feeding the chemicals to the process. A level sensor is provided in each base tank to determine the chemical level and to deliver a signal to a control and processing unit. Sensors may be provided on the process for generating chemical condition information to the control and processing unit.

Abstract: An apparatus for injecting a chemical additive into a fluid flow stream. In one embodiment, liquid petroleum fuel is being pumped from a storage unit into a tank of a tank truck and a controlled amount of a fuel additive is injected into the flow stream of the petroleum fuel. Preferably, the petroleum fuel is pumped through a line from the storage which is quick-connected to a loading line attached to the tank truck. The chemical additive is pumped from a supply container on the tank truck into the loading line by means of air pressure supplied to the additive container from the tank truck's own air pressure supply system. The fuel additive is pumped at a controllable rate and at a higher pressure than the pressure of the fuel stream.

Abstract: An automated chemical storage and feed system for a use station to chemically treat and monitor a process at a use station where the process is being run, including one or more base tanks at the use station storing chemicals and having means intermittently or continuously feeding the chemicals to the process. A level sensor is provided in each base tank to determine the chemical level and to deliver a signal to a control and processing unit. Sensors may be provided on the process for generating chemical condition information to the control and processing unit.

Abstract: At least one air tank and a tank of a solution to be injected into an irrigation system. Irrigation water is allowed to slowly fill the air tank. As the water rises in the air tank trapped air in the tank is compressed. This compressed air is allowed to pass into the top of the container of solution forcing the solution from the bottom of the container into the irrigation system. An adjustable metering valve controls the amount of solution that passes into the irrigation water and hence the amount of water that can flow into the air tank. The tank capacities are such that when the air tank is filled with water the solution has been exhausted from the solution tank. Drain means is provided in the air tank to drain the water therefrom.

Abstract: A device for injecting additive products into a liquid includes a conduit in which flows a liquid, a nozzle which penetrates into the conduit for injecting additive products, and a chamber in fluid communication with the conduit and situated above the latter. The nozzle is situated within the chamber, and means are provided for introducing and maintaining a gaseous atmosphere in the chamber whereby the nozzle is entirely contained in the gaseous atmosphere.

Abstract: A liquefied gas, such as liquefied chlorine, which is injected into a liquid stream such as an aqueous stream, in the liquid state, is prevented from causing the liquid stream to freeze by cooling the liquefied gas to a temperature below its boiling point at the pressure of the liquid stream.

Abstract: A water conserving system for plumbing installations in buildings, for instance in homes, institutions, industry, etc., facilitates saving of water during adjustment of volume and temperature and precludes the need for water shut-off and subsequent readjustment to accomodate suspensions of actual water use while saving, for reuse, the water that otherwise flows unused to drain and into the sewer system. The water conserving system provides water outlet fixtures having diverter valving means for selective diversion of water through return conduits to storage means, whence it is returned to the water supply for reuse, so that water adjustment may be performed with least water waste and water flow may be left turned on (and adjusted) without it being wasted to drain when actual use is temporarily suspended.

Abstract: An extraction valve head for a tank for high-purity and/or toxic liquid chemicals has an inlet valve for a filler gas, an outlet valve and a purging valve, which closes a bypass between a gas inlet line and an extraction line. The valves are configured as metal diaphragm valves and are fitted in a common metallic valve housing block. All valve seals of the valves are arranged in close spatial proximity to one another in the valve housing block.

Abstract: A system for automatically filling a bubbler, or other vapor delivery system from a reservoir, is disclosed in which the conduit system is purged and pressurized with inert gas, using a unique refill reservoir, level sensing and valving system.

Abstract: Apparatus for use in the bleeding of fluid systems, especially the hydraulic brake system of a motor vehicle, comprises fluid pumping equipment (1) for pumping fluid to a main fluid reservoir (8) of the fluid system via a supply conduit (24). The pumping equipment (1) includes a fluid container (6) and an air pump (2) serving to discharge fluid from the container (6) into the supply conduit (24). The pump (2) is driven through an electric circuit (C1.C2) including a fluid pressure control (14) and a fluid level control (15A) of the container (6). The delivery end of the supply conduit (24) passes through an opening (26) of the reservoir (8) which opening (26) is sealed by an elastomeric plug (18) laterally expandable by a compression device. The above apparatus considerably conveniences the bleeding of motor vehicle brake systems.

Abstract: N.sub.2 and CO.sub.2 are admitted, through separate valves actuated by single high hysteresis actuator, into a mixing device when the mixture is fed to a beer keg. The actuator is dependant upon the relative Co.sub.2 N.sub.2 mixture pressures so as to maintain the mixture pressure within predetermined limits and in one embodiment the use of a venturi mixing device ensures that the mixture composition remains substantially constant when the N.sub.2 and CO.sub.2 gases are at substantially different pressure.

Abstract: A body member has a top opening recess and a depending stem having an external portion capable of removable engagement in one of the outlets of a fluid containing system of the type having a plurality of outlets, such as an underground lawn sprinkling system. The top opening recess has an integral valve stem therein which is in communication with a bore extending upwardly through the bottom of the stem. By connecting the body member into one of the outlets and connecting the valve stem to a source of air pressure, the system can be cleared of water through one or more of its other outlets.

Abstract: Method and apparatus for introducing a first liquid having a high vapor pressure into a second liquid, which comprises maintaining the first liquid under gas pressure in excess of its vapor pressure, and intermittently introducing predetermined quantities of said first liquid under pressure into the second liquid. The pressure of the first liquid remains above its vapor pressure before it is mixed with the second liquid. This method and apparatus is particularly applicable to the introduction of liquid bromine chloride into liquid waste or water.

Abstract: An improved multi-boom field spraying apparatus designed to spray in a sequential manner one or more of a plurality of liquids to a selected spray zone among a number of spray zones is described. The apparatus contains a novel spray, agitate air and rinse system. A novel spray boom and vessel apparatus are also described.

Abstract: A system for providing substantially gas-free liquid propellant to the engine(s) of a rocket or space vehicle comprises a storage tank (10) having a first opening (15) that communicates with a "fill, drain and feed" line (17) and a second opening (18) that communicates with a "pressurant and vent" line (20). A hollow trap (13) having a porous inlet window (22) and an exit port (21), which is aligned with the first opening (15), is positioned within the tank (10). A liner (14) having a plurality of porous windows (24) is positioned inside the trap (13), and is secured to the trap (13) circumjacent the inlet window (22) and circumjacent the exit port (21), but is elsewhere spaced apart from the interior wall of the trap (13).

Abstract: A combined camp stove or camp lantern fuel tank reservoir cap and pressurizing assembly is presented in which a fuel tank cap body is adapted to include a hollow check-valve assembly base on the top thereof. Into the check-valve assembly base is inserted a check valve assembly. The cap body has an aperture therein so as to be fluidly connected to the base when a compressed air nipple from a hose is inserted into the check-valve assembly. The compressed air flows through the base, past a gasket in the body having a slit therein for air passage and through the body to pressurize a fuel reservoir.

Abstract: An apparatus for feeding a variety of doping liquid used in doping-liquid treatment processes for electronic materials such as semiconductors and precision machinery components, and a feeding monitor apparatus. More specifically, it relates to an apparatus for stably feeding the doping liquid while detecting its volume, in the case where the doping liquid is fed from a liquid-filled hermetic returnable can to the doping liquid treatment process, and a feeding monitor apparatus is connected between the returnable can and treatment process.

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: Disclosed are apparatus for recovering beverages from cases of defective aseptic packages such as caused by mismarking. The apparatus comprises a plurality of hollow needle pairs which both puncture the packages. One needle of the needle pair supplies air to the package forcing the beverage to exit through the other needle. The apparatus further includes means for advancing and retracting the needle pairs. The apparatus is pneumatically controlled and powered.

Abstract: A valve system for particulate solid flow control which is especially advantageous where combined particulate solid and fluid flow control through a pressure level change is desired, such as might be used in conjunction with a lockhopper.

Abstract: A liquid replenishing apparatus for supplying liquid raw material replenishment for liquid raw material of an article to at least one raw material tank, including a replenishment tank for storing the liquid raw material replenishment, a first pipe extending between the replenishment tank and the raw material tank, a second pipe for introducing pressurized gas into a space of the replenishment tank, a branch pipe communicating with the first and second pipes, a pressure regulator provided in the second pipe, and a flow regulator provided in the branch pipe.

Abstract: A method and apparatus for irrigating plants in a controlled manner. The method includes the alternate steps of moving the irrigating liquid from a reservoir containing the liquid to a plant-accommodating container situated at a level higher than that of the reservoir by using pressurized air to displace the liquid from the reservoir, and then of terminating the flow of displacing air to permit excess liquid to return from the container to the reservoir under gravity. These alternate steps are carried out automatically in accordance with a predetermined cycle.

Abstract: A gas pressure operated dispensing method and apparatus for dispensing fluids including a first container as a primary fluid source, a second container as a reserve fluid source, a first gas line connected to the first container and a second gas line connected to the second container, a gas pressure source connected to the first and second gas lines for supplying a pressurized gas thereto, a first change over valve and a second change over valve disposed in the first gas line and the second line, respectively, a supply line for introducing a fluid into the second container, a discharge line for discharging a fluid from the first container, a fluid line communicating with the supply line and the second container at one end and the discharge line and the first container at the other end, the fluid line containing a third valve, and vent line selectively connectible to the second gas line through the second change over valve when the gas pressure source is separated from the second gas line by the second change

Abstract: A water storage reservoir, prevailingly underground, comprising a first reservoir provided above the ground level and connected to water feeding and distribution means, an underground tank which is also connected to said water feeding means, a second reservoir provided inside said tank and on its bottom, and connected to said tank through opening means, the pressure of the water columns in series in the first reservoir and in the tank being always lower than the water feeding pressure.

Abstract: A self-contained underwater drainage system is disclosed for the automatic draining of water from a container while submerged in a pool of water. The container assembly is constructed of a container for receiving nuclear fuel pellets or other radiation emitting material and a closure to be received within the container. The closure is provided with a liquid egress path communicating between the interior and exterior of the container. A self-contained source of compressed gas within the closure is discharged into the interior of the container for draining the water therefrom through the liquid egress path upon operation of the piston rod by means of its engagement with a portion of the container during use.

Abstract: A hydropneumatic tank control for a water supply system having a closed water tank (10), an air compressor (17) and a water pump (21, 22). A plurality of pressure switches (PS18, PS23, PS25, PS26) at the air compressor detect air pressure threshholds in the tank and a plurality of water level detector electrodes (32, 33, 34, 35) detect water level threshholds in the tank. A control causes the water pump to fill the tank to a pressure level or a water level at the operator's option. A pressure switch (PS2) in a tank adapter assembly (20) shuts down the system if an over pressure condition is detected. The compressor is housed in a waterproof housing (41) and cooled by a blower (48) passing air through the housing with thermostats (TH14, TH15, TH16) functioning to protect the compressor from overheating. A baffle 52 prevents the cooling air from recirculating through the housing.

Abstract: A discharge system for a tubing system in an apparatus for the selective transport of fluid volume quantities, for instance in a particle analyzer. Fluid is transported by means of a delivery pump from a first vessel through a transport conduit to a second vessel. Carry-over from one specimen to the next as well as foam, droplets and bubbles at the outlet or delivery nozzle are to be circumvented. A substantially T-shaped fitting is arranged in the transport conduit and its lateral branch leads through a valve to a collector vessel which is maintained under vacuum by a pump. After closing the valve and filling the first vessel, the delivery pump is operated.

Abstract: A device is disclosed for supplying a glass raw material gas in the form of the mixed gas consisting of the glass raw material gas and the carrier gas to a vapor deposition device for producing a preform of an optical fiber, the supply device including a secondary raw material container having a pressurizable interior and provided adjacent to a main raw material container. The bottoms, or areas near the bottoms, of the two containers are interconnected via a pipe including at a mid portion thereof a switching valve and a device for adjusting the flow rate of the raw material liquid between the two containers. Liquid level detectors are provided in one or both containers to maintain the constant volume of the liquid raw material so as to provide a constant state inside the main raw material container. The operation of this device can easily be entirely automated.

Abstract: The present invention is directed to a solvent pressurization system for use in liquid chromatography which includes a source of pressurized gas, a plurality of sealed vessels that are adapted to hold solvents therein, each of the vessels having a gas input port, said vessels being located within a closable compartment; a double manifold having a distribution chamber in communication with the pressurized gas from the gas source and an exhaust chamber communicatable with a venting system, a set of fittings for each vessel for controlling the gas flow from the distribution chamber to the vessel and from the vessel to the exhaust chamber, each set of fittings including inlet valve means and outlet valve means and an element for opening or closing both valve means together.

Abstract: In a process for mixing liquid samples to be analyzed, the liquid sample contained in a sample container is moved and mixed by a mechanically oscillated air column in contact with at least part of the liquid sample surface, the air column being excited with a frequency in the resonant range of the system formed by the air column and the sample liquid.

Abstract: Apparatus for cleaning a liquid delivery system, comprising a container having an open top, a control housing removably closing the top of the container and having a supply conduit extending to the bottom of the container, an inlet connection for connecting the housing to a source of air under pressure, an outlet connection for connecting the housing to a liquid delivery system, and valving mechanism in the housing, including first and second valves actuable between normal positions and operated positions, and a conduit inter-connecting the valves, the first valve having a normally closed position and an operated position in which the source is connected to the conduit inter-connecting the valves, and the second valve having a normal position in which the inter-connecting conduit is connected to the outlet connection, and an operated position, in which the supply conduit is connected to the outlet connection.

Abstract: The fuel tank as disclosed is provided particularly for storage of aggressive fuel as they are used for and in control jets, attitude positioning systems in satellite and space vehicles. The fuel tank is of a spherical configuration and partitioned by a conical insert to obtain two spaces of different volumes. The small end of the cone faces the fuel outlet, opposite the driving gas inlet, and is constructed as a narrow mesh sieve. The fuel outlet is surrounded by a collection chamber likewise closed off by a narrow mesh sieve. The smaller one of the two chambers includes fuel lines which end in the corner space where the conical partition is affixed to the spherical tank and are closed likewise by sieves. The invention uses the strong surface tension forces of the fuel wetting the mesh to create a barrier against the passage of driving gas into the fuel line and outlet of the tank.

Abstract: A fuel tank lid having an inner lid and provided with an internal cavity which slidably receives a piston. The piston is provided at its upper end portion with a filter and a suction vent valve through which the internal cavity of the lid is communicated with the exterior of the tank. The inner lid is provided at its both with a discharge vent valve through which the internal cavity is communicated with the interior of the tank. The piston has an upper end portion exposed to the outside, and is normally biased outwardly by a spring. This tank lid functions as an air pressurizing pump for pressurizing the air in the tank, as the piston is manually operated reciprocatingly.

Abstract: The filling systems according to the invention utilize pneumatic pressure maintained within closely held tolerance limits to impose a constant dispensing force upon the material being dispensed. The invention in one embodiment utilizes a buffer tank system in which the product to be dispensed is transferred from a supply tank (11) to the buffer tank (12) where the desired pressure is induced through a pneumatic head which is introduced above the product level. The product level in the buffer tank (12) is allowed to fluctuate within a relatively narrow band of depth so as to negate the effect of changes in gravity head pressure. The closed and pressurized system is refilled by forcing the incoming product into the tank (12) under a higher pressure than that in the buffer tank (12). The air within the tank (12) that is displaced as a result of introducing the new product is automatically vented to atmosphere through a precision regulation system (45).

Abstract: A flux control device for maintaining the specific gravity and the surface level of a liquid flux contained in a fluxing vessel within predetermined ranges, includes a first reservoir for storing a concentrated flux, a second reservoir for storing a diluent, detectors for checking the liquid level and the specific gravity of the liquid flux in the fluxing vessel for any deviation from predetermined ranges, and first and second conduits extending between the vessel and the first reservoir and between the vessel and the second reservoir, respectively. Means are provided to apply a gas pressure selectively to the first and second reservoirs so that the concentrated flux and the diluent may be fed to the fluxing vessel through the first and second conduits, respectively, upon pressurization of the first and second reservoirs.

Abstract: Spray paint lines, in particular the spray sites in spray booths of auto assembly lines, are provided with the paint material by means of a pump delivering the paint material into the main ring. The pressure level required for spraying the paint is adjusted by means of a pressurized vessel and a pressurized gas above the liquid level. A second pump conveys fresh paint material into the pressurized vessel.

Abstract: Compressed air is directed through an inert gas generator which removes oxygen to produce a nitrogen enriched, combustibly inert air or gas. The converter is sized to only meet the relatively low flow rate requirements of the system during which times the combustibly inert air or gas is delivered directly to a utilization site. The system further includes a high pressure storage container in which a pressurized precharge of the combustibly inert air or gas is stored. Combustibly inert air is released from such high pressure storage container for providing the higher flow rate requirements of the system. The system may be used aboard an aircraft for inerting fuel tanks. It may include a separate compressor for filling the high pressure storage container.

Abstract: An oil burner of the type of pumping up a fuel oil is disclosed which has a first oil level setting means of an airtight type having an overflow pipe means constantly immersed at the lower end thereof in a fuel oil to be pumped up to the first oil level setting means and has a second oil level setting means disposed below the first oil level setting means and directly connected to a fuel oil supply tank. A fuel oil supplied from the second oil level setting means is drawn up to the first oil level setting means by a pumping-up means and subsequently supplied through a supply pipe to a combustion means. The level of a fuel oil in the first oil level setting means is kept constant at a position above the outlet end of the supply pipe. The overflow pipe means may be movable in the vertical direction so as to vary only the supply rate of a fuel oil.

Abstract: An apparatus is provided for causing circulation within a large body of fluid, especially a fluid comprising long molecules, such as polymer chains. The apparatus comprises a so-called "large bubble" generator, which generates a gas bubble to push the liquid through a series of bent pipes and ultimately into a vertically extending stackpipe. Upon generating a large gas bubble into the stackpipe, the gas acts as a piston within the stackpipe, pushing liquid upwardly therethrough, and thereby drawing liquid into the bottom. In order to prevent "motoring", a sharp-edged baffle plate is provided at a bend in the pipes between the gas-accumulator and the stackpipe. The baffle plate serves to prevent continuing flow of the fluid created by the presence of the long chain molecules.

Abstract: Toxic liquids, especially halogenated aromatic hydrocarbons, are immobilized within a container by dispersing cryogenically comminuted polymer particles in a surface active state throughout the liquid. The polymer is injected into a container holding the toxic liquid as a slurry of particles in a cryogenic refrigerant. Use of a heat, shear or radiation degradable polymer as the immobilizing agent allows the solidified liquid to be returned to a fluid state for later disposal by incineration.

Abstract: Pressure vessels are disclosed for containing a foamable mixture of liquid and a blowing agent for incrementally or continuously dispensing a foam of constant foam-volume ratio. Liquid compositions having coating or polymeric solids are capable of being foamed and dispensed with the apparatus. The method and apparatus are especially advantageous in dispensing foamed coatings, paints or adhesives with superior control.

Abstract: An apparatus is provided for causing circulation within a large body of fluid. The apparatus comprises a "large bubble" generator exposed to the pressure of the fluid at a predetermined level, a vertically extending standpipe, preferably of adjustable height, an inverted siphon between the standpipe and the generator, and a transverse connection between the standpipe and a vertically extending stackpipe. Upon generating a large gas bubble into the stackpipe, the gas acts as a piston within the stackpipe, pushing liquid upwardly therethrough, and thereby drawing liquid into the bottom. The continuous passage of such large bubbles through the stackpipe results in a current flow circulation through the large standing body of liquid.

Abstract: A pressure controlled emulsion storage receiver for use in an emulsifying system. The receiver comprises an inlet for receiving emulsion, and an outlet for delivering pressurized emulsion from the receiver. A fluid inlet is provided for feeding into the receiver pressurized fluid from a source. A level control is also provided to maintain a quantity of emulsion in the receiver between predetermined limits. The arrangement also provides for the maintenance of a predetermined fluid pressure in the receiver.