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 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 blender pump receiving a supply of base fluid and discharging the fluid into a particle mixing vat. A throttle valve and an input flow meter are connected to the discharge of the throttle valve. A gelling unit has its inlet connected to the blender pump discharge upstream of the throttle valve and the output of the gelling unit is connected to the upstream side of the throttle valve and downstream of the gelling unit inlet. The gelling unit includes a mixing eductor with at least one dry chemical gel feeder and a dispensing pump having a higher outlet pressure than the blender pump discharge pressure. A flow meter and valve is connected to the output of the dispensing pump for measuring and controlling the flow rate through the gelling unit.

Abstract: An apparatus 1 for mixing first and second gases includes first and second valves 2, 3 each having a stem 14 the axial movement of which controls the flow of the gases through their respective valves. Each valve stem has one end engaging a control surface 16 of a thrust plate 18 mounted for axial and pivotal movement on a shaft 20. Means including a plunger 26 is provided for pivoting the thrust 18 so that one valve stem is moved axially relative to the other thereby increasing the rate of flow of one gas through its respective valve while concomitantly decreasing the rate of flow of the other gas through its respective valve to vary the relative proportion of the gases without varying the total flow rate. Total flow adjuster 34 bears on the plunger 26 for moving the thrust plate 18 axially towards and away from the valve stems 14 thereby to vary the total rate of flow of the gases without varying the relative proportions of each gas flowing through its respective valve.

Abstract: In a preferred embodiment an improved faucet proportioner includes a plate for defining a first stream of water together with additional curtain streams of water adjacent the first stream. The first stream is directed into a venturi for pulling a second liquid, like detergent or sanitizer, while the curtain streams flow alongside outside of the venturi, but within the proportioner. The streams first contain any splash or splatter of the first stream at the venturi mouth, and secondly the streams enhance the venturi drawing action of the first stream upon joining the first stream as it flows out of the venturi discharge opening. The enhanced venturi action of the first stream effectively draws the second liquid into the first stream, yet the proportioner does not require any porous obstruction downstream of the venturi which might clog or retain detergent or sanitizer and release it when only pure water is desired. Methods are included.

Abstract: An apparatus useful for introducing an additive material into a pipeline in which a primary material is flowing in a direction generally parallel to the centerline of the pipeline comprises: a probe located at least partially in the pipeline and in communication with an additive material source; and at least one first aperture and at least one second aperture located in the probe in the pipeline and acting as passageways for additive material from the additive source and the probe to the interior of the pipeline, provided that the first and second apertures are located away from the centerline of the pipeline and are oriented to face substantially downstream relative to the general flow of the primary material in the pipeline.

Abstract: In a single-pressure actuated control system for compressed air spraying of water, a rising pressure of an air supply line actuates an air valve to supply the air to the nozzle and to a tank, and a water valve is subsequently actuated by the pressure from the air valve to supply water to the nozzle. As the air supply pressure falls, first the air valve and then the water valve closes, and the air stored in the tank drains water downstream of the water valve to prevent dripping from the nozzle.

Abstract: A flap for a ventilator, heater, or air conditioner installation in particular for the cabin of a motor vehicle, comprises a support plate (12) and at least one block-shaped air-guiding blade (20) mounted on said plate. Said block-shaped blade is constituted by at least two thin walls (22, 24) of plastics material which are made on and fixed to said support plate by molding. At least one of said walls is folded back and fixed to the other wall to obtain a a block-shaped blade having a volume which is greater than the sum of the volumes of said thin walls. This avoids the need to add on a plastic or foam block separately.

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: Mixing apparatus for a plurality of liquids and including an elongated passage for carrying one of said liquids to a mixing chamber. Said passage includes check valve means which opens into a distribution head which in turn forms a multiplicity of lateral streams. The second fluid is introduced to the mixing compartment by way of an inlet chamber which establishes an annular flow in a direction normal to the flow of the laterally exiting streams. The combined mixture is then discharged through a progressively constricted turbulence chamber.

Abstract: An apparatus (unit A) for completely and uniformly mixing different colored paints from a reservoir (unit B) is constructed from upper and lower sections (9) and (11). Different colored paints from reservoir (unit B) are supplied through lines (15) to inlet passageways (29) and (29c), which are in fluid flow communication with flow control valves (23) and (23c) and with corresponding fluid channels (37) spiraling around a generally frustoconically shaped protrusion (27) extending upwardly from the lower housing section (11). Protrusion (27) snugly engages within a correspondingly shaped cavity (25) formed in upper housing section (9), with the inside surface of the cavity cooperating with channels (37) to form individual passageways that crisscross each other to thoroughly mix the different colored paints carried therein. The passageways terminate at the upper end portion of protrusion (27) to discharge the uniformly mixed-together paint out through an outlet tube (5).

Abstract: An aspirator structure to proportionately mix a pressurized motive liquid and non-pressurized additive liquid and to deliver the mixed liquids into a storage supply of mixed liquids. The aspirator structure includes an elongate aspirating chamber connected with the supplies of motive and additive liquids and has a discharge end from which the mixed liquids flow. The structure next includes an elongate, vertical delivery tube with a cylindrical inside surface, a closed upper end portion communicating with the discharge end of the chamber and an open lower end opening in the supply of mixed liquids. The cross-sectional extent of the tube is greater than the cross-sectional extent of the chamber and the liquids flowing from the chamber are directed substantially tangentially with respect to the inside surface of the tube so that those liquids establish a vortex flow with and are moved downwardly therethrough by the force of gravity.

Abstract: A detergent dispenser for a brush having a rotatable impeller driven by a jet of water. The dispenser has a tank connected to a valve having a blade positioned to intercept the flow of water around the impeller, part of the water passing into the tank to be mixed with the detergent to be dispensed into the flow of water around the impeller prior to the jet of water driving the impeller.

Abstract: Apparatus for determining and displaying the temperature of a mixture of two liquid streams, such as hot and cold water mixed in a shower supply line, includes a flow control valve for varying the flow rate of the mixed water independently from adjustment of temperature mixing and control valves. The apparatus includes structure for more uniformly mixing the two streams and for providing improved homogeneity of temperature in the mixture. A baffle is provided at the inlet of the device for redirecting the incoming mixture to a mixing chamber prior to exposure of a thermometer thereto. The flow control valve increases back pressure at the outlet thereby further to improve temperature uniformity of the outlet stream. The apparatus may be installed intermediate existing plumbing connections and does not require the use of specialized shower heads.

Abstract: A liquid metering and mixing aspirator including an elongate aspirator chamber with upstream and downstream ends, a small nozzle passage on an axis parallel with and radially offset from the axis and toward one side of the aspirator chamber and opening at the upstream end thereof adjacent said one side thereof, a liquid concentrate inlet port communicating with the upstream end portion of the aspirator chamber at the other side thereof, an enlarged vertical cylindrical mixing chamber with an upper end portion communicating with the downstream end of the aspirator chamber and a lower outlet end, water supply means connected with the nozzle passage and with a high pressure water supply and liquid concentrate supply means connected with the liquid concentrate port.

Abstract: A steam desuperheater comprising a liquid spray tube assembly positioned in a steam line and including a plurality of liquid outlet openings supplying liquid to plural spray nozzles, and a hollow piston plug axially movable therein upwardly from a lower valve seat to progressively open said outlet openings.

Abstract: A mixing chamber has a water inlet and chemical inlet with a depending discharge merging into a duct having an air vent separated from the chamber by an inclined chamber floor.

Abstract: There is disclosed an apparatus for injecting fluids into flowing aggregates such as injecting water into a traveling dry cementitious mix in which a substantially annular fluid slot surrounds the flow path for the aggregate to establish an inwardly moving sheet of fluid to impinge on the aggregate.

Abstract: A valve for adding ingredients to or sampling the fluid flowing through the valve includes an adjustable solid stem which can be extended through the flow path of a pipeline to form a seal with a seat positioned directly opposite the stem. An injection nozzle is fitted into the seat to permit addition of ingredients or sampling of the fluid when the stem is retracted from the seat. When the stem is seated, flow still occurs in the flow path.

Abstract: Apparatus for introducing a widely variable predetermined quantity of liquid from a non-pressurized source into a flowing stream of a pressurized fluid. The unitary apparatus is readily detachably assembled to bulk shipping containers of different sizes and its pneumatically powered proportioning mechanism is quickly adjustable at will to pressurize and dispense a liquid at a selected one of many different precise rates into a pressurized fluid stream. The apparatus is readily and quickly adjusted to operate at a wide range of pressures and at many hundreds of pounds per square inch and to vary the ratios of the two fluids between one part in 1,000 and one part in 40,000. The proportioner has many applications including dispensing a fire fighting agent into a pressurized water line supplying fire hoses.

Abstract: A liquid injector system for introducing, metering, and premixing a liquid hygienic agent such as soap or medicant into a stream of water flowing through a conduit for dispensing in a bath or shower array of spray nozzles. The system includes at least one manually operated piston valve mounted in the water flow line to the spring nozzles and include communication with an agent injector cylinder having a dispensing system actuated by system water pressure. The valve includes a housing with a water flow-through, direction reversal chamber in fluid communication with the reciprocally movable valve body having an axial passage terminating in a radial passage near a mid-portion of the valve body. The system ensures for positive metering and thoroughly mixing the agent in the spray system.

Abstract: A flow-control valve is provided, especially for controlling the flow of water heated to near its boiling point. In order to limit cavitation at the position immediately downstream of the throttling point formed by the sealing body, preferably in the form of a rubber diaphragm, and the valve seat, a ventilating slit is provided for communicating ambient air into the flow of liquid at a position downstream of the throttling point. In particularly preferred embodiments, the ventilating slit is formed between a thin inner tube and an outer tube, which outer tube has an upper end forming the valve seat. In particularly preferred embodiments, the cross section for the flow at the position where the ventilating air is introduced, is smaller than the throttling point cross section.