Abstract: A valve device comprises: a housing provided with a flow path; a valve body configured to move in a direction intersecting the flow path, thereby controlling an opening area of the flow path; a bonnet provided with a hollow portion and detachably attached to the housing, the hollow portion extending from the flow path in a radial direction and the valve body being retracted into the hollow portion; and a load receiving portion configured to receive inertia force generated at the bonnet by a rotation torque received by the housing due to external force.

Abstract: A valve assembly for a fluid injection valve has a longitudinal axis and includes a valve seat and a valve disc. The valve seat has an orifice that is laterally offset from the longitudinal axis. The valve disc has a fluid passage which, in a first angular position of the valve disc, is positioned in such fashion that it overlaps the orifice at an interface of the valve disc and the valve seat to establish a fluid path through the valve disc and the valve seat for dispensing fluid from the valve assembly. The valve disc is rotatable around the longitudinal axis with respect to the valve seat from the first angular position to a second angular position, wherein the valve seat and the valve disc mechanically interact to seal the orifice in the second angular position.

Abstract: The invention includes a bioreactor system for growing a photosynthetic culture in an aqueous liquid and harvesting the photosynthetic culture. The present invention further relates to a method for growing a photosynthetic culture in an aqueous liquid and harvesting the photosynthetic culture. The present invention further relates to a use of a harvester system arranged to collect at least part of the scooped photosynthetic culture in a photo bioreactor system.

Abstract: A system includes a ball valve with a housing having a fluid passage, a ball disposed within the housing along the fluid passage, and a stem coupled to the ball. The stem is configured to move the ball between an open position and a closed position relative to the fluid passage. The stem is disposed in a first opening on a first side of the housing. The stem is removable from the first opening, through at least one opening in the ball, and out through a second opening on a second side of the housing.

Abstract: A Venturi valve has a Venturi housing with a plunger slidably mounted on a control shaft within the Venturi housing. Sliding movement of the plunger along the control shaft is controlled by a compression spring. A hard stop is fixed to the control shaft to limit the movement of the plunger along the control shaft in order to keep the compression spring from over compression and from a resulting loss of accuracy.

Abstract: A valve assembly is provided to control the flow of a fluid therethrough. The valve assembly includes a valve body and a pressure-regulating assembly. The valve body defines an inlet, an outlet, and a flow path extending therebetween. The pressure-regulating assembly includes a longitudinally extending piston tube, a venturi element, and a vent. The piston tube is shiftably mounted in the valve body and at least in part defines an outer chamber. The flow path extends through the piston tube. The venturi element is disposed in the flow path. The vent fluidly interconnects the flow path and the outer chamber such that a pressure drop associated with fluid flow through the venturi element draws fluid from the outer chamber through the vent and into the flow path.

Abstract: An air control regulator regulates the amount of air flowing into the inlet of a combustion chamber by causing flowing air to support a disc located in the air passage against the force of gravity. Air passes around the edges of the disc and is channeled into a plurality of airflows by ovoid depressions in the inner surfaces of the regulator forming a venturi chamber. By regulating the airflow into the combustion chamber, combustion efficiency is improved.

Abstract: “SINGLE SYSTEM FOR CONTROL OF HIGH OR LOW PRESSURE GASES FLOW RATE AND VALVE FOR CONTROL OF HIGH OR LOW PRESSURE GASES”, consists essentially in a system (S), which has active control of the movement of the valve (1) ram (P) solely by the concept of measurement of the flow rate and by the difference of pressure between the input and output of said valve (1), which, based on certain preconceived parameters, opens or closes the ram (P) so as to compensate the error between the actual and programmed flow rates.

Abstract: An apparatus for controlling medium flow, especially for controlling dilution liquid flow in connection with the headbox of a paper-making machine or a cardboard-manufacturing machine, which apparatus comprises a valve which controls dilution flow, which valve consists of a valve housing, a stem part and a flow channel between an inlet and an outlet of the valve. The stem part is movable in the housing between at least two positions, a first position in which the flow path between the inlet and the outlet is open, and a second position in which the flow path is closed, and the stem part and/or housing is designed to direct the medium flow at least in the vicinity of the outlet opening.

Abstract: To provide a carburetor in which, when a set screw is detached, a jet needle can also be detached along with the set screw. A carburetor of the variable venturi type has a venturi piston to adjust the venturi of an intake passage that is provided in a carburetor body. In the carburetor, the jet needle is attached as a unit with a cap member by screwing the cap member into the venturi piston. The carburetor includes a retaining mechanism, with help of which the cap member is engaged with the jet needle to form a single unit, when the cap member is detached from the venturi piston.

Abstract: The present invention proposes an improved method and apparatus for the prevention and treatment of lymphatic and other type edemas with a Self-Actuating Sequential and Gradient Compression Apparatus comprised of a multiplicity of inflatable cells each cell in series, but the last connected to the next by a plurality of one-way valves which vent in such a regulated way as to control the pressure, velocity, or volume of air or other fluid flowing through one cell to another fully inflating the first cell before the subsequent cell for gradient pressure effect. In this manner unidirectional sequential and gradient waveforms are generated. The last cell in series, alone, finally vents the overall increase in pressure back to the first cell thus completing a circuit and allowing pressure equilibrium to be reestablished throughout the system.

Abstract: A system for influencing the rheological properties of a transportable material, especially a free-flowing, pasty or bulk product is associated, or can be associated, with a machine for processing or treating the transportable material in which the transportable material is transported in a transport direction. The system includes at least one controllable operative system for producing mechanical oscillations and applying the same to the material in at least one processing section of the machine, and at least one detection system for detecting the rheological properties of the material. The detected rheological properties are used as a basis for controlling the operative system for producing the mechanical oscillations and applying the same.

Abstract: A high recovery sonic gas valve design with the inlet flow entering transverse and orthogonal to the outlet flow is presented. The configuration cancels the effects of the inlet flow entering orthogonal to the axis of the nozzle and diffuser. The inlet passage is curved in a manner to let the flow enter along the centerline of the nozzle and diffuser. The nozzle is contoured and provides upstream flow impedance. The diffuser is contoured with the area gradient varying from a low positive value at the nozzle throat then to a maximum value and finally dropping off significantly to near zero prior to the nozzle exit. The diffuser is nearly cylindrical and may extend past the valve outlet flange and protrude into adjacent piping.

Abstract: A valve seat includes a seat body with an inlay and at least one groove. The seat body has a passage which extends from a first opening to a second opening in the seat body. A channel is located in the seat body adjacent the first opening and extends around at least a portion of the passage. The inlay is located in at least a portion of the channel. The groove extends along at least a portion of an inner surface of the passage from the first opening towards the second opening.

Abstract: A valve seat includes a seat body with an inlay and at least one groove. The seat body has a passage which extends from a first opening to a second opening in the seat body. A channel is located in the seat body adjacent the first opening and extends around at least a portion of the passage. The inlay is located in at least a portion of the channel. The groove extends along at least a portion of an inner surface of the passage from the first opening towards the second opening.

Abstract: A gas-lift valve includes a valve member having an inner wall defining a flow passage having a longitudinal axis, the valve member having a planar inlet end and an outlet end, the inner wall diverging from the inlet end to the outlet end so that the flow passage increases in cross sectional area from the inlet end to said outlet end.

Abstract: A throttling choke valve having a wear sleeve lining the interior surface of the cylindrical passage downstream of the valve sealing mechanism. A preferred embodiment of the wear sleeve has a removable retainer ring that fits between the wear sleeve and the fluid outlet. The retainer ring has a distal end that opens into the pipeline. At the distal end of the retainer ring the thickness of the wall of the retainer is decreased such that the interior surface is curved outward toward the interior surface of the pipeline.

Abstract: Disclosed herein is a fuel/ignitor valve for metering liquid or gaseous fuel having a servo motor-actuated pintle providing rapid flow rate adjustment response and positive flow shut-off. The fuel flows from an inlet port through a venturi passageway having a throat through which fuel flows at sonic velocity to an outlet port. The pintle has a stem at one end and a contoured head at an opposite end containing a circumferential seal for sealing the throat of the venturi passageway. A motor driven drive nut concentric with the pintle axis is threaded to the pintle stem. As the drive nut is rotated, a pin and slot arrangement causes the pintle to translate along the pintle axis. A force distribution assembly comprising a pair of annular thrust bearings in combination with annular thrust washers is disposed around the drive nut adjacent to each side of an annular flange of the drive nut. This assembly absorbs pressure loads acting on the pintle which would otherwise be transferred to the motor.

Abstract: The present invention provides an axially-rotated valve which permits increased flow rates and lower pressure drop (characterized by a lower loss coefficient) by using an axial eccentric split venturi with two portions where at least one portion is rotatable with respect to the other portion. The axially-rotated valve typically may be designed to avoid flow separation and/or cavitation at full flow under a variety of conditions. Similarly, the valve is designed, in some embodiments, to produce streamlined flow within the valve. A typical cross section of the eccentric split venturi may be non-axisymmetric such as a semicircular cross section which may assist in both throttling capabilities and in maximum flow capacity using the design of the present invention. Such a design can include applications for freeze resistant axially-rotated valves and may be fully-opened and fully-closed in one-half of a complete rotation.

Abstract: The present invention provides an axially-rotated valve which permits increased flow rates and lower pressure drop (characterized by a lower loss coefficient) by using an axial eccentric split venturi with two portions where at least one portion is rotatable with respect to the other portion. The axially-rotated valve typically may be designed to avoid flow separation and/or cavitation at full flow under a variety of conditions. Similarly, the valve is designed, in some embodiments, to produce streamlined flow within the valve. An axially aligned outlet may also increase the flow efficiency. A typical cross section of the eccentric split venturi may be non-axisymmetric such as a semicircular cross section which may assist in both throttling capabilities and in maximum flow capacity using the design of the present invention. Such a design can include applications for freeze resistant axially-rotated valves and may be fully-opened and fully-closed in one-half of a complete rotation.

Abstract: A fuel admission valve for metering gas without using a mass flow sensor. The valve uses a flow control element and nozzle, an actuator, a fuel supply pressure sensor, a fuel supply temperature sensor, a flow control element position sensor, and a flow control circuit to meter gas in sonic flow with insensitivity to the discharge pressure.

Abstract: Mechanism for controlling the flow of fluid between a fluid inlet and a dump outlet, wherein the mechanism includes a dump tube removably engageable with both a valve housing and valve seat, and also a valve member which is removably engageable with the valve seat and slidably guided by the valve housing.

Abstract: An electronic expansion valve comprising a stepping motor, motion conversion member for converting the rotational motion of the stepping motor to a screw motion, a valve pintle coupled to the motion conversion means to be rectilinearly displaced and having pistons at both ends of the valve pintle, of which the pistons are slidably supported on valve casing members, a valve body formed as an integral part of the valve pintle at an intermediate portion thereof, and a valve seat which has such an outer surface that when the valve pintle is displaced with respect to the valve seat in either direction, the cross sectional area and the shape of a passage defined between the valve seat and the valve pintle are smoothly varied. The valve can be used in refrigeration cycle with a compressor. Stable operation of the refrigeration cycle is obtained.

Abstract: A valve includes a diffuser for the recovery of static pressure energy. The point of flow separation is stabilized by introducing, into the region where the flow separation point can occur, a volume of the working medium from a portion of the valve having a higher pressure than such region. By stabilizing the flow separation point against vibration, resulting noise is minimized.

Abstract: A flow control valve, especially for use in controlling the operation of a steam turbine, includes a valve seat arranged in the interior of a valve housing, and a diffusor arranged downstream of the valve seat, as well as a valve member which is mounted in a valve member guide toward and away from the valve seat to accordingly throttle the flow of steam or a similar medium through the interior of the valve housing and into the diffusing channel of the diffusor. Minimization of alternating forces tending to excite the valve member into oscillating and stabilization of the flow of the medium in the channel disposed downstream of the valve seat are achieved by the provision of internal ribs within such a channel. At least three such ribs are provided, projecting at least substantially in the respective radial directions or parallel thereto from the surface bounding such channel.

Abstract: A streamlined control valve with integral seating means having a flow characteristic determining contour and being part of a gradually expanding flow path formed between said contour and a movable central valve plug with a streamlined contour facing an orifice and being designed to have an abrupt area change producing configuration on its discharge side.

Abstract: A variable high pressure choke consists of a hollow valve body having a cylindrical cavity with a closed end, an open end and a cover or closure for the open end, and aligned tubular inlet and outlet portions on opposite sides thereof defining a straight bore intersecting the cavity at a right angle thereto. A tubular seal member is positioned in the bore with an end portion movable end-wise into the valve cavity. A flow selector member positioned in the cavity has a solid portion and a portion with flow controlling passages of different sizes; has a sliding fit between an extended position with the solid portion closing off the seal member end portion and successively retracted positions along the seal member to provide fluid flow openings of different sizes through the valve body. An operating stem connected to the flow selector has a threaded connection in the cover whereby rotation of the stem by a hand wheel raises the stem to move the flow selector.

Abstract: An end loaded ball valve having a fluid channel and a ball moving gate with a ball that seats against a valve seat to block passage of fluid through the valve. The valve also includes a removable retainer in the flow channel of the valve. The retainer, when in functional position in the valve, holds the valve seat in position in the valve and, when removed from the valve, allows access to the seat and the ball through the channel. The gate is designed to hold the ball during operation of the valve but to release the ball for removal through the channel for repair or replacement.

Abstract: A streamlined coal slurry letdown valve is featured which has a two-piece throat comprised of a seat and seat retainer. The two-piece design allows for easy assembly and disassembly of the valve. A novel cage holds the two-piece throat together during the high pressure letdown. The coal slurry letdown valve has long operating life as a result of its streamlined and erosion-resistance surfaces.

Abstract: A visbreaker, letdown valve is featured which maintains a smooth flow of furnace effluent. Liquid passing through the throat of the valve is throttled, and a portion is caused to flash to vapor. The valve is designed to allow for subsonic flow of the vapor under all process conditions. A quenching fluid is also added to the liquid passing through the throat in order to cool the liquid.

Abstract: The valve assembly for use with high temperature and high pressure fluids has inner and outer spaced shells and a valve actuator support of inner and outer spaced members which are connected at their end portions to the inner and outer shells, respectively, to extend substantially normal to the longitudinal axis of the inner shell. A layer of resilient heat insulating material covers the outer surfaces of the inner shell and the inner actuator support member and is of a thickness to only occupy part of the spaces between the inner and outer shells and inner and outer actuator support members. The remaining portion of the space between the inner and outer shells and the space between the inner and outer members is substantially filled with a body of castable, rigid refractory material. A movable valve member is disposed in the inner shell.

Abstract: A valve body is enlarged to contain the area of throttling vanes which are mounted on actuating shafts; the body is tapered along with the vanes to provide a loss of body area which is uniform to the throat section of the valve body; regulation of the vanes is accomplished by the shafts which extend outwardly of the valve body.

Abstract: Air bleeding apparatus for an exhaust emission control system comprising three plates joined face to face. The first plate has a plurality of grooves each communicating at one end with a vacuum source and at the other end with a vacuum actuator for an ignition timing control system or an exhaust gas recirculation control valve. The second plate has a plurality of orifices communicating with the grooves, respectively; the third end plate has a vent hole therethrough and grooves diverging from the vent hole and respectively communicating with the orifices. The second plate is joined abuttingly to and between the first and third plates whereby the grooves form conduits therewith, whereby the conduits of the first plate communicate with the vent hole of the third plate through the respective orifices of the second plate and the respective conduits of the third plate. The characteristics of the apparatus may be varied by changing the second plate to one having different orifices.

Abstract: A nozzle in a descending discharge duct for hot flue gases has a tubular body of hourglass shape partly obstructed by a vertically movable frustoconical insert which defines a narrow, downwardly diverging annular channel with the lower part of the body lying below its waist. The upwardly converging top of the insert, projecting partly above the waist, is coated or clad with a refractory layer and is removable for replacement of that layer.

Abstract: A combustible mixture of air and minute fuel droplets is produced for supply to the cylinders of an internal combustion engine. This mixture is formed by accurately controlling both the atomization of fuel and the mass flow rate of air over substantially the entire operating range of the engine. These controls are accomplished by introducing liquid fuel into a stream of intake air and uniformly distributing the fuel in the air followed by passing the air and fuel mixture through a constricted zone to increase the velocity of the mixture to sonic. The sonic velocity air at the constricted zone divides the fuel into minute droplets that are uniformly entrained throughout the air stream. The area of the constricted zone and the quantity of fuel introduced are adjustably varied in correlation with operating demands imposed upon the engine.

Abstract: Individually actuatable digital valve elements in parallel interconnect a fluid source to a receiver. In the flow passage of each valve element, there is a converging-diverging nozzle that feeds into the receiver. A trim adjustment screw is movable along the axis of each nozzle to vary the effective cross-sectional area of such nozzle. The nozzle and screw are part of an insert that can be mounted in the valve body after individual calibration.