Abstract: An electromagnetic valve unit is held so as to be sandwiched between a receiving portion of a housing portion of control equipment and a pressing member includes a shoulder portion to be opposed to the receiving portion of the housing portion and an annular elastic member provided with a protruded portion to be inserted into a recessed portion formed at the shoulder portion. The annular elastic member is further provided with an annular deformation portion that is deformable in the axial direction so as not to press the protruded portion in the axial direction.

Abstract: A one-way valve is provided. The one-way valve may be, for example, a check valve, a relief valve, or the like, which may be in the form of a poppet valve. The valve provides a housing with a through hole. The through hole has an upstream portion and a downstream portion. The upstream portion has a reduced diameter compared to the downstream portion. The housing contains a valve seat, which typically has a taper. A poppet, or valve member, moves within the through hole from a valve closed position and a valve open position. The poppet has a high pressure facing side and a low pressure facing side opposite the high pressure facing side. The low pressure facing side of the poppet engages an elastic member of a compression member that biases the poppet in the valve closed position. The high pressure facing side of the poppet engages a resilient metal seal in the form of an annular disc. The annular disc has a generally wavy or undulating shape.

Abstract: A valve control is configured for use with control valves and other flow controls. The valve control leverages a simplified structure to avoid problems with manufacture and reduce costs. This structure includes a support unit that compresses parts of a valve housing together. Inside of the valve housing, the structure incorporates diaphragms that cause a pair of balanced valves to move in response to changes in pressure of fluid in a conduit. For industrial application, the valve control finds use to maintain pressure of natural gas in pipelines downstream from a control valve.

Abstract: A system and method for CT image reconstruction are provided. The method may include: obtaining raw data set related to an object; generating a first image set based on the raw data set, wherein the first image set includes a first full quality image and a first max field of view image; generating one or more reference images based on the first max field of view image; generating a first bone information image based on the one or more reference images; generating a second image set based on the raw data set, wherein the second image set includes a second full quality image; generating a second bone information image based on the one or more reference images; correcting hardening beam artifact of the second full quality image based on the second bone information image to generate a hardening beam artifact corrected image.

Abstract: A discharge valve assembly includes: a valve casing that has an intake bore, an air chamber communicating with the intake bore, and a discharge aperture communicating with the air chamber; a metal intermediate ring disposed in the air chamber and having a valve hole that communicates with the air chamber, and at least one connecting aperture that communicates with the discharge aperture and the valve hole; a base ring that retains the metal intermediate ring in the air chamber and is mounted on the valve casing; and an adjuster that is disposed in the base ring and movable relative to the base ring to adjust an air flow through the valve hole.

Abstract: A valve assembly and system designed to enable an operator to withdraw a sample of a liquid from a source, typically for collection in a collection vessel. The valve assembly includes a valve housing, a sleeve secured to the valve housing and having an inner surface being at least partially threaded for mating with a threaded section disposed on the valve stem body. The valve stem has an internal longitudinal bore, a sealing boot, circumferential seals, and openings to the bore, and is movable between an open position (wherein the fluid flows from the source through the valve assembly) and a closed position (wherein the valve stem prevents the fluid from flowing from the source into the valve assembly).

Abstract: An air conditioner access fitting includes a valve body having a threaded bore and an annular valve seat extending around the bore. A twist-to-open valve is disposed in the bore and threadedly engaged with the valve body. The valve includes a valve element configured to form a metal-to-metal seal with the valve seat. A valve core is disposed in a second bore formed in the twist-to-open valve, and the valve core operates selectively to open and close a flow path extending through the second bore. The valve body further includes a quick connect shoulder disposed around the bore. An associated service fitting includes a quick release mechanism, a wrench for rotating the twist-to-open valve, and a valve core depressor for opening the valve core.

Abstract: A fluid flow controller and meter including a metering tube with a bore formed axially therein having a slit-like orifice axially disposed and intersecting the bore along the length thereof. Flow through the meter is controlled by a valve member which moves in the passage of the metering tube and across the slit-like orifice. In a preferred embodiment, the slit-like orifice is in fluid communication with a site tube which contains a flow sensitive element which is responsive to the flow induced. The slit-like orifice achieves a linear flow response to changes in the relative position of the valve member.

Abstract: A globe valve with a strainer.The globe valve with a strainer comprising a valve body having a valve box, a strainer body, the valve box and the strainer body extending upwardly and downwardly respectively at an angle of about 45.degree. to the axis of the valve body, a valve seat hole positioned at the intersection of the axes of the valve body and the valve box, the surface of the vavle seat hole formed at an angle of about 90.degree. with the axis of the valve box, a hole positioned at the intersection of the axes of the valve body and the strainer body, the surface of the hole formed at an angle of about 90.degree. with the axis of the strainer body.

Abstract: A water faucet includes an inlet, an outlet and an opening formed between the inlet and outlet. A cylindrical member extends upward from the opening. A sleeve is secured to the body. A rod is threadedly engaged in the sleeve. A cap is secured to the lower portion of the rod and includes a peripheral flange dependent from the cap for slidably engaging with the cylindrical member and includes a convex lump for engaging with the inner peripheral surface of the cylindrical member so as to make a water tight seal with the cylindrical member.

Abstract: An inline valve includes a glass body having an upwardly open bore with a tapered seating surface, and colinear inlet and outlet ports having passages intersecting the seating surface. Fluid flow between the ports is regulated by a valve member whose stem has a tapered tip conforming substantially in shape to that of the seating surface. The tip has a relatively soft surface which can conform to irregularities in the seating surface when the valve is closed. An annular seal or an extensible boot prevents fluid leakage along the valve stem.

Abstract: A fluid flow controller and meter including a metering tube with a bore formed axially therein having a slit-like orifice axially disposed and intersecting the bore along the length thereof. Flow through the meter is controlled by a valve member which moves in the passage of the metering tube and across the slit-like orifice. In a preferred embodiment, the slit-like orifice is in fluid communication with a site tube which contains a flow sensitive element which is responsive to the flow induced. The slit-like orifice achieves a linear flow response to changes in the relative position of the valve member.

Abstract: A pneumatic calibration system and the pump therefore, the system comprising a first fluid containing chamber for attachment to a device to be tested, a valve coupled to the first chamber to remove the fluid from the first chamber and a pump structure for providing a predetermined pressure to the fluid in the first chamber. The pump comprises a first piston disposed and moveable within first chamber to vary the volume of first chamber, a second piston, a second fluid containing chamber communicating between the first piston and the second piston, the second piston providing a predetermined pressure to the fluid in the second chamber and an expanding sleeve valve communicating between the first chamber and the second chamber to minimize the pressure differential across the first piston. The position of the first piston is adjustable in the first chamber. The second chamber includes a first portion and a second portion with a sleeve valve disposed therebetween.

Abstract: A simplified two-piece, cartridge-type hydraulic valve provides increased valve seat area and improved hydrodynamics. The present valve is a plug-type valve in which the piston is integral with the valve stem, and the valve seat is inserted into the base at the bottom end of the gland. The stem is threadably fitted into the center of the gland, whereby turning the top of the stem moves the piston reciprocally between open and closed positions. Fluid flow enters through ports in the base of the piston and is directed upward past the valve seat area at the top of the piston. The piston ports are radially divergent from a center point at the bottom end of the piston to points around the circumference of the top end of the piston in the area of the valve seat. A tapered nose piece is included in the bottom of the gland in the center of the valve seat area in order to improve flow efficiency and reduce turbulence.

Abstract: A drum lid for a ventable drum has a depression formed in the surface of the lid. A vent valve is placed in the depression and extends through the lid. The valve has a valve outlet which opens into the reservoir in the lid. During venting the reservoir is filled with water and the valve stem is slowly opened. The gas escapes into the water in the reservoir in the form of bubbles. When the bubbles stop the tank is vented and the lid can be removed.

Abstract: A valve is disclosed for regulating the flow of fuel from a fuel source containing fuel under pressure to a fuel consuming apparatus. The valve includes a valve body having a passage therethrough, a resilient element for regulating the flow of the fuel through the passage, and spring means for adjusting the compression on the gasket. A housing is also disclosed for attaching an igniter to a fuel consuming apparatus.

Abstract: A cartridge valve is received in a housing for restricting fluid flow to the top of a piston in the housing. The cartridge valve includes a pair of opposed substantially parallel working faces, one of which is movable toward the other. The fixed face includes a central bore into which fluid flows radially from the outer peripheries of the working faces.

Abstract: A method and means for removably connecting a valve member (62, 62A) on a valve stem (46, 46A) for movement between open and closed positions relative to a valve seat (24, 24A). The removable connection includes a split frustoconical connector (76, 76A) forming two halves (78, 78A) which fit about a frustoconical section (56, 56A) of the valve stem (46, 46A). A retainer sleeve (84, 84A) holds the split connector (76, 76A) about the frustoconical section (56, 56A) of the stem (46, 46A).

Abstract: An improved stop valve eliminates the need for O-rings and washers. The valve contains a one piece unitary stem formed of resilient compressible plastic material. The stem contains three separate seals and fits within, extends through and is moveable in a valve sleeve. Operating the handle moves the stem axially between a first axial position in which the valve is fully open and a second axial position in which the valve is fully closed. The first seal is operative to provide a seal responsive to said stem being in the first axial position, the second seal means is operative to provide a seal responsive to said stem being in the second axial position, and the third seal is operative to seal in all axial positions.

Abstract: A combined seal and actuator support for valves, in which a sleeve is engaged between the actuator shaft of the valve and the valve body to effect a seal between the shaft and body, and wherein complementally interengaged actuator means are on the sleeve and shaft to support and effect reciprocating movement of the shaft, thereby eliminating the need for expensive o-ring seals and other expensive manufacturing techniques.

Abstract: A cryogenic valve having a valve seat in the valve body adapted to be closed by a conical seat disc. The seat disc is supported for vertical movement in a seat holder which is carried by an elongated stem that extends through the valve bonnet. The stem and bonnet are sealed by a series of compressed Teflon and brass rings concentric with and between the upper end of the valve bonnet and the stem. The rings are axially compressed between a flange formed in the valve bonnet and a sleeve follower which in turn is secured by a packing nut. The Teflon rings have holes therethrough and/or roughened surfaces to provide improved sealing.

Abstract: A valve of the outside seal and yoke variety is provided, with a seal between a bonnet base and a valve body being axially spaced between a valve seating member and mating threads on the valve body and bonnet base. An end of at least one packing bolt is positioned within a cavity formed within the valve body, and prevents the bonnet base from unthreading from the valve body. A yoke threaded to the valve stem is rigidly secured to the bonnet base by a pair of yoke bolts and intermediate supports, and prevents inadvertent rotation of the packing bolts. The assembly technique of the present invention provides an inexpensive yet reliably OS&Y valve with all desired structural components being rigidly connected. The bonnet assembly of the present invention may be utilized with a conventional valve body and pocket design, thereby substantially increasing versatility and reducing manufacturing costs.

Abstract: A manually operated vent valve assembly for a bung hole in a drum lid. The low profile valve assembly is inserted into the bung hole and the lid sealed. The drum is vented by opening a valve stem in the assembly. The vented gas leaves through a gas outlet which is recessed in a reservoir within the valve assembly. By filling the reservoir with fluid, the venting gas can be observed as bubbles.

Abstract: A valve is provided with improved bonnet-stem and bonnet-valve body seals. Both non-metallic seals may be simultaneously compressed by threading the bonnet to the valve body, with a valve stem seal sandwiched between the bonnet and an axially movale retainer in engagement with the valve body. A jam nut threaded to the exterior of the bonnet may be periodically loosened, and the bonnet further threaded to the valve body to re-compress both seals and stop leakage from the valve. The concepts of the present invention are well adapted to providing a low cost valve suitable for handling corrosive fluids.

Abstract: A valve assembly for providing easy and rapid removal of the valve packing means while the valve is in service, closed, or out of service, which assembly includes a valve body, a bonnet connected to the body, a packing housing assembly means secured to the bonnet, a packing gland mounted on the packing means assembly, a valve stem movably secured in the valve assembly and having a closure member adapted to seat selectively in a valve closure seat in the valve body or, in the back seat condition, in a valve closure seat in the bonnet. The valve stem is threaded at its lower end adjacent the closure means for engagment with matching threads secured in the bonnet. The packing assembly means includes a stuffing box or packing cartridge that is readily detachable from the bonnet to permit removal of the packing material while the valve is in service, closed, or out of service, without damage to the stem or interior surfaces of the packing means assembly.

Abstract: A faucet repair system is provided for the removal of loose or broken faucet components, debris or other material which may be lodged in a faucet body or water feed line. A hollow coupling having threads identical to the bonnet or stem nut of the defective faucet includes a collar over which an outlet tube is connected. The bonnet or stem nut and stem are removed and the coupling is screwed into the faucet body. A bend in the tube directs water flow into a lavatory or sink basin when the water feed line shutoff valve is then opened. The water flow carries with it the loose material. A modified outlet tube includes a trap which retains the dislodged article and is suitable for elongate objects.

Abstract: A dual valve plug stem actuator device for plug or globe type valves is disclosed wherein said actuator mechanisms provide respectively coarse and fine independent movement of the valve plug stem. One actuating device controls the movement in the axial direction of the valve plug stem relative to and onto a valve seat port by the rotational movement of the threaded valve plug stem through the internal threads of an internally and externally threaded actuator nut. The other of the actuating devices controls the movement of the valve plug stem relative to and onto a valve seat port through the rotation of the internally and externally threaded valve actuator nut where rotation of the actuator nut causes movement in the axial direction of said actuator nut in relation to the stationary valve body and where the axial displacement of the actuator nut causes the same relative axial rotationless displacement of the valve plug.

Abstract: A large manually operated leak-proof corrosion-proof low-cost shut-off or stop valve for handling high pressure refrigerant liquids and/or gases comprises a valve body formed of two sheet metal hemispheres welded to the periphery of a circular metal valve plate having a fluid passage therethrough and hollow cylindrical metal tubes welded to the hemispheres along the edges of circular holes cut in the hemispheres. The cylindrical outer end of a valve spindle extends into a cylindrical bore in the hub of a hand-wheel which is rotatable to open and close the valve. The hand-wheel is secured to a valve spindle by a removable flanged roll pin which fits into a pin hole formed by mating or registering recesses formed in the periphery of the outer end of the valve spindle and in the peripheral wall of the bore in the hub of the hand-wheel. Unscrewing of the bonnet affords access to the sealing materials and, as the bonnet moves axially, it also shifts the hand-wheel off of the outer end of the valve spindle.

Abstract: Low flow control valve having contoured cylindrical plug means cooperating with a semi-elastic sleeve, the latter being suitably retained within a valve orifice capable of providing not only tight shut-off, but also no clearance between said valve plug and orifice when the plug is retracted so that all fluid passes by a profiled portion of said plug. Said sleeve type sealing means is further pressure assisted by line fluid to enhance the aforementioned sealing capability.

Abstract: A vent valve (10) is disclosed. The valve (10) is comprised of a conduit (12), a cap (14), a nut (16) a bolt (18) and a coupling (20). The coupling (20) connects with a conduit (12) to a radiator (12). A pair of slots (44) in the nut (16) form a vent passage for steam and air to escape the valve (10).

Abstract: A valve comprising a hollow cylindrical body with a valve opening at one end and a valve seat around the valve opening. A valve member is movable towards and away from the valve seat on a spindle which passes through a spindle opening opposite the valve opening. A handle is provided on the outer end of the valve spindle and has a screw-threaded counterbore which is engageable with a screw-threaded spigot on the outside of the valve around the spindle opening to hold the valve member in the closed position. In this position the end face of the valve member is flush with the outside of the valve around the valve opening. The upper side of the valve member has a screw-threaded counterbore engageable with a screw-threaded spigot on the inside of the valve around the spindle opening to hold the valve in the open state and form a seal around the spindle.

Abstract: Improved self-grinding valve is provided with corrosion-protecting features and an improved floating coupling between the valve stem and valve disc whereby, when the valve disc is brought into contact with its seat, a selected rotation of the valve disc will produce a grinding of the seat, followed by a disengagement of the valve stem from the valve disc. When this disengagement takes place, the full torque load of the stem can be imposed upon the valve disc to obtain the desired seating of the same. The valve stem is advantageously comprised of improved telescoping and theadedly engaged sections that operate to relieve the forces used to hold the valve disc against the seat upon the initial opening of the valve whereby the amount of torque required to ultimately rotate and free the valve disc from its seat is materially reduced and seizing of the valve disc relative to its seat avoided.

Abstract: A replacement valve stem assembly for a faucet in the form of an internally and externally threaded sleeve extending through and secured by nuts to the faucet cap and a threaded valve stem engaging the internal threads of the sleeve and having a valve washer secured to the inner end thereof and a faucet handle secured to the outer end thereof.

Abstract: A globe type Y-pattern diaphragm valve for high pressure, high temperature service affording increased diaphragm cycle life, enhanced flow coefficient and features of decreased construction cost. Comprising the diaphragm in one embodiment is a resiliently supported multi-layer cartridge formed of superimposed layers of different metals having different moduli of elasticity with the upper layers being radially slotted to redistribute encountered stress loads. In an alternate embodiment the multi-layer diaphragm cartridge is comprised of superimposed layers of like composition but of varying relative thicknesses and supported to afford a controlled flexure. An auxiliary porting in the discharge passage adjacent the valve head in combination with a downstream tapered and faired beltway effects a more nearly streamlined flow path to increase the flow coefficient rating of the valve.

Abstract: A valve body for insertion in a fluid line having a sampling passageway extending from the interior to the exterior of the body for sampling from or injecting ingredients into the fluid line. A first annular tapered valve seat in the passageway and a second tubular valve seat in the passageway axially aligned with the first valve seat. A valve stem moves toward and away from said valve seats and includes a first tapered valve element adapted to seat on the first seat and a second cylindrical valve element adapted to seat on the second seat. Means rotatably move the valve stem towards and away from the valve seat for wiping the sealing areas upon closing. A plastic lining covers all of the interior areas of the valve that are exposed to contact with fluid flowing through the valve. The end of the stem moves to a position generally tangent to the internal diameter of the valve body for preventing material buildup in the passageway.

Abstract: A faucet valve for kitchen sinks, bathroom washbasins and like applications, said faucet valve being adapted to be made of molded plastics, having relatively few operative parts, and designed to minimize the stresses of assembly and use. The invention has two principal features: the first is the use of a ratchet interlock between the bonnet of the valve and the cover plate of the sink or washbasin, said interlock being oriented to allow the bonnet to be rotated in one direction relative to the valve body in order to thread the bonnet into engagement with the valve body, and to prevent the bonnet from rotating in the opposite direction relative to the valve body when the valve is in use; and the second is the use of a self-centering valve closure member in the form of a spherical ball mounted within a spherical socket with sufficient clearance between them to enable the ball to float relative to the valve seat.