Abstract: The invention relates to a check valve with a spherical valve element whose service life and operating reliability is considerably increased in relation to conventional check valves. The improved check valve is used in an injector for a fuel injection system of an internal combustion engine, having a hydraulic pressure booster.

Abstract: A pressure control valve has a non-uniformly tapered valve bore that has an increasing diameter as it extends downstream. An interface angle, defined in part between a valve ball and the valve bore in the area of the smallest gap between them, increases as the valve ball is increasingly displaced away from a valve seat of the valve bore.

Abstract: An irrigation system having at least one water distribution member, a water supply source and a horizontally oriented, shut-off control device located in a fluid flow line between a water supply source and the at least one water distribution member for automatically shutting off the flow of supply water to the at least one water distribution member in response to a predetermined increase in force of fluid flow. The shut-off control device has a housing with an interior flow path having rails and projections dimensioned to support a compressible ball which moves within the housing and limits side-to-side motion or turbulence.

Abstract: Fluid flow control members for use with valves are described herein. An example fluid flow control member for use with a valve includes a body having a first seating surface to control a flow of fluid through the valve. The body defines a second seating surface opposite the first seating surface to control a flow of fluid through the valve. Additionally, the body defines an aperture to receive a stem of the valve, and a bore surrounded by the first seating surface to receive at least one of a seal or a sliding member each of which have a first surface to be engaged by a second surface of a spring seat coupled to the stem to control a fluid flow through the valve.

Abstract: The present invention generally relates to a Dual Action, Low Head Isolation Valve is a plumbing fitting that will isolate the interior pipes of a house from the exterior temperatures of summer and winter while allowing the passage of gasses through the system for venting. This valve would be installed at the top of the household plumbing drainage system, or the top vent, in the attic or above the roof. This valve will allow for the system to draw in air and exhaust the septic gasses, or respirate in both directions with very low head or resistance.

Abstract: A discharge valve comprising a valve body, a valve member, and a valve seat. The valve body has a first end; a second end; a central axis therebetween; an inlet formed through the first end; a flow channel extending from the inlet to the second end; a valve channel extending from the inlet and terminating within the valve body; and at least one discharge port extending from the valve channel to an outer surface of the valve body. The valve member is substantially-spherical and movably disposed within the valve channel. The valve seat is disposed adjacent the first end of the valve channel. The valve seat has an orifice defined therethrough The valve member is movable between a first position, engaging the valve seat to substantially seal the orifice, and a second position adjacent the second end of the valve channel to permit fluid to flow through the orifice.

Abstract: In the valve of this invention, at its outlet there is a blade gate (1) and at least a part of the body (2) makes for a uniform cast of the valve body (3).

Abstract: A check valve capable of improving the tightness between a sphere and a valve seat and suppressing the sinking is provided, so as to provide a liquid chromatography infusion pump enabling a high precision infusion even if in a low flow rate region. On a surface, contacted with the sphere, on the valve seat 10 of the check valve, a rim 10r is disposed around a through hole 10h in the center of the valve seat 10. The rim 10r is formed as a boundary between a concave spherical surface of a diameter ?1 and a concave spherical surface of a diameter ?2 disposed as concentric circles with the through hole 10h. When the sphere of a diameter ?B abuts against the valve seat 10, the sphere 15 abuts against the valve seat 10 at the annular rim 10r in a line contact according to a relation of ?1>?B>?2.

Abstract: Apparatuses for restricting fluid flow through a well conduit comprise a housing having a longitudinal bore and a collapsible seat disposed within the bore. The seat has a first position defining a first seat inner diameter when the apparatus is in the run-in position and a second position defining a second seat inner diameter when the apparatus is in the set position. The first seat inner diameter is greater than the second seat inner diameter. A plug element is adapted to be disposed into the bore and landed on the seat to move the seat from the first position to the second position. While in the second position, the seat restricts fluid flow through the bore and provides additional support to the plug member landed on the seat.

Abstract: A urine collection apparatus includes an adaptable reservoir that is sized and shaped for conveniently and effectively being transported by a user. The reservoir includes a top portion including an intake valve in fluid communication with the reservoir. The intake valve is provided with an opening such that the male catheter can be selectively biased in fluid communication with an interior of the reservoir. Such an intake valve further has a threaded screw cap directly and adjustably coupled thereto for effectively allowing a selected quantity of air to continuously flow into and out of the reservoir wherein the quantity of air is commensurate with a quantity of fluid discharging and entering the reservoir respectively. The intake valve preferably has a monolithically formed conical tip that terminates proximal to the top portion such that the male catheter can effectively be supported at a fixed relationship with the reservoir during operating conditions.

Abstract: A venting device configured to attach to a vent and to reduce malodors emitted from a vent includes a first end, a second end, and a center portion. The second end includes two holes into which a barrier is inserted. The second end also includes a protrusion and a ball configured to rest on the protrusion. When a disruption in air pressure occurs within the venting device, the ball moves upward from the protrusion to allow air to exit the device. The barrier prevents the ball from moving upward beyond the barrier.

Abstract: In the valve according to the invention the supporting blind (6) of the deflected channel (5) is terminated at its free ends with the oblique surfaces (10), and the guiding rail (7) of the ball (4) is terminated with the supporting directional arrangement (8) directing the ball (4) toward the supporting blind (6) of the deflected channel (5), and the top (9), which is positioned closer to the valve outlet than to the inlet, and together with the oblique surfaces (10) of the supporting blind (6) of the deflected channel (5) produce a slot (11) widening itself to the direction of deflected channel (5) interior.

Abstract: Apparatus and methods for constructing a valve comprising a sealing member and a hollow ball operable to sealingly engage the sealing member. A guide housing disposed about said hollow ball and does not constrain rotation of said hollow ball. A spring is disposed between the hollow ball and the guide housing so as to bias the hollow ball into sealing engagement with the sealing member. The hollow ball is constructed from two unequal sized portions and may comprise a hollow, spherical body having an aperture and a plug sized so as to closely fit within the aperture.

Abstract: A regulating component to regulate fluid flow through the axial passage communicating between the intake end, and mouth engageable distal end, of a drinking straw. The component has an upper wall separated from a lower wall by an engaged sidewall all defining a restriction chamber. When engaged in the axial passage of a drinking straw, fluid traversing the straw all traverses through apertures in the lower and upper wall and thereby through the restriction chamber. Force of the moving fluid on a ball in the restriction chamber acts to raise the ball to seal the aperture in the upper wall. If the fluid reaches too high a speed or continues long enough at a lower speed to move the ball upward it seals the restriction chamber from the exit end of the straw.

Abstract: Embedded check-valve manufacturing assembly (100, 600) for subsequent firing and integration in a micro-fluidic system. The assembly can include a check-valve chamber (104, 604), an inlet port (106, 606) and an outlet port (108, 608) formed from at least one layer of an unfired low-temperature co-fired ceramic (LTCC) tape to form a substrate (102, 602). A plug (114, 614) is disposed within the check-valve chamber that is capable of withstanding the LTCC firing process without damage or distortion.

Abstract: Embedded check-valve manufacturing assembly (100, 600) for integration in a micro-fluidic system. The assembly can include a check-valve chamber (104, 604), an inlet port (106, 606) and an outlet port (108, 608) formed from at least one layer of an low-temperature co-fired ceramic (LTCC) tape to form a substrate (102, 602). A fired LTCC plug (114, 614) is disposed within the check-valve chamber.

Abstract: A rapidly replaceable non-return device (110) for a petrochemical refinery reactor (112), of the type comprising: a support tube (114), connected to a portion of the reactor (112), this support tube (114) being provided internally with a cartridge (116) containing a ball (118), the cartridge (116) having, around an inlet hole (121) for a processed fluid, a seat (122) for housing the ball (118), and having slots (120) for the outflow of the said processed fluid; the cartridge (116) is fitted removably in the support tube (114).

Abstract: An ultrasonically operated valve a source of ultrasonic energy for excitation of a pressurized liquid. The vibration of the ultrasonic horn imparts a pulsing of the pressure of the liquid within the valve. Selection of a sealing mechanism that responds at a different natural frequency than that of the valve body causes the sealing mechanism to unseat and therefore to enable liquid flow. The sealing mechanism will stay unseated as long as the source is imparting energy to the system and therefore inducing pressure pulses in the liquid thus keeping the sealing mechanism away from the valve seat.

Abstract: A flow control valve has a ball and an annular seat providing a positive stop for automatically preventing flow through the valve when a line downstream has been broken. The flow control valve is useful for interior applications in which seepage through the valve would be unacceptable and in which both hot and cold water lines need to be protected. A magnet may aid in positioning the ball. Sensors may be used to detect positions of the ball. A flow control system that includes the flow control valve may include any of a variety of interchangeable components for facilitating incorporation of the flow control valve in a water or other fluid line. Another embodiment includes a mechanism for detecting and stopping flow due to slow leaks.

Abstract: A unitary valve housing has an upper and lower portion. The upper portion has an inner chamber for accommodating two spaced apart balls and a cylindrical side skirt with oppositely positioned openings. The lower portion is cylindrical in shape and has a top shelf with adjacent circular openings for seating the two balls and openings communicating with a bottom of the lower portion. The two openings on the upper portion side skirt are aligned with oppositely positioned openings in a side of the lower housing. A secondary shelf is located in the lower housing below each of the two circular openings contiguous with the side openings. A lower end of the lower housing portion is attached to a conduit.

Abstract: An inflator (12) includes structure (40, 50, 82) defining a chamber (130). First and second passages (92 and 116) extend through the structure (40, 50, 82). A burst disk (120) closes the first passage (116). A valve housing (142) is received in the second passage (92) and defines a fill passage (154). A fluid (186) is stored under pressure in the chamber (130). An igniter (70) is actuatable for opening the burst disk (120) for enabling the fluid (186) to flow out of the chamber (130) through the first passage (116). A valve member (144) enables flow of the fluid (186) through the fill passage (154) of the valve housing (142) into the chamber (130) and prevents flow out of the chamber (130) through the fill passage (154).

Abstract: A vacuum fitting having a check valve for use in bagging composite parts prior to and curing the during process, in which the body of the vacuum fitting is formed from a single piece of material, and the check valve has no loose fitting parts is disclosed. The vacuum fitting has a one-piece body portion having a base flange, a central neck portion, and a top quick-connect fitting adapted for releasable connection to a conventional vacuum source. The check valve is disposed within the central neck portion with a snap ring.

Abstract: The insert for a ball and seat valve comprises a tubular cylindrical body formed by vertically spaced apart top and bottom rings joined by helically inclined and circumferentially spaced apart ribs defining side openings. The ribs support inwardly arching ball guide flanges which thin in cross-section as they extend inwardly and upwardly from the ribs. The inner upper ends of the flanges are connected with and tied together by an elongate, upwardly extending reinforcing member protruding above the top ring. The reinforcement member provides structural strength to the thinned flanges. Thinning of the flanges leads to increasing the open area of the top outlets, thereby promoting the volumetric fluid capacity of the valve.

Abstract: A double diaphragm pump including an air manifold, two air chambers to either side of the air manifold, two pump chambers to either side of the air chambers and diaphragms extending between the air chambers and pump chambers are stacked together in horizontal assembly. Intake and discharge manifolds span this distance to intake and exhaust ports associated with the pump chambers. One-way valves having valve bodies with passages therethrough are arranged between the manifolds and the pump chambers. The valve bodies have inlet mounting surfaces and outlet mounting surfaces with circular attachment flanges radially extending from these mounting surfaces. The circular attachment flanges each define a central axis which on each valve body are parallel and laterally displaced from one another. Concavities extend inwardly from the valve bodies from the inlet and outlet mounting surfaces.

Abstract: Embedded check-valve assembly (100, 600) for integration in a micro-fluidic system. The assembly can include a check-valve chamber (104, 604), an inlet port (106, 606) and an outlet port (108, 608) formed from at least one layer of liquid crystal polymer (LCP) film to form a substrate (102, 602). A plug (114, 614) is disposed within the check-valve chamber.

Abstract: A ball stop valve (10) allows liquid to enter a reciprocating piston pump when internal suction is great enough to raise the ball (13) and create a space between the ball (13) and a seat (9). This invention allows the user to easily insert or remove rings (15) into the ball inlet valve, either above or below the ball (13), so that the space between the ball (13) and the seat (9) can be adjusted. The valve (10) is easily accessible to the user and all components of the ball valve (10) are removable.

Abstract: A microfluidic device that includes a microball valve is provided. The microball valve is capable of preventing or interrupting fluid flow through the microfluidic device. The microfluidic device can include a substrate layer, and a microfluidic pathway that includes the microball valve. Methods are provided for manipulating fluids using the microfluidic device.

Abstract: A ball check valve comprises a valve body chamber which includes an inlet opening, an outlet opening, and a ball that is free to travel within the valve body chamber. A valve seat is adapted for receiving the ball. A body clearance section is located downstream of the inlet opening. A bore section is located downstream of the body clearance section. Fluid flow is allowed to flow through the valve body from the inlet opening through the outlet opening, but fluid flow through the valve body from the outlet opening through the inlet opening is prohibited by the interaction of the ball and the valve seat. The inlet opening is smoothly contoured to urge fluid flow between the inlet opening and the outlet opening to be laminar in nature.

Abstract: A freezeless wall hydrant has a normally horizontal fluid inlet tube with an interior end and exterior end. A hollow valve fitting is rigidly secured to the interior end of the inlet tube for a connection to a source of pressurized fluid. A movable ball is located with a fluid conduit that extends from the interior of the inlet tube to the location of the potable water source. When the water pressure inside the inlet tube increases because of the presence of ice, the high pressure of such water moves the ball to open fluid flow of the high pressure fluid to the source of potable water which will be at a lower pressure, thus reducing the fluid pressure within the inlet tube and saving it from rupture.

Abstract: A microfluidic device that includes a micro ball valve is provided. The microball valve is capable of preventing or interrupting fluid flow through the microfluidic device. The microfluidic device can include a substrate layer, and a microfluidic pathway that includes the microball valve. Methods are provided for manipulating fluids using the microfluidic device.

Abstract: A ball stop valve (10) allows liquid to enter a reciprocating piston pump when internal suction is great enough to raise the ball (13) and create a space between the ball (13) and a seat (9). This invention allows the user to easily insert or remove rings (15) into the ball inlet valve, either above or below the ball (13), so that the space between the ball (13) and the seat (9) can be adjusted. The valve (10) is easily accessible to the user and all components of the ball valve (10) are removable.

Abstract: A flow control device to be coupled to the intake of a pump including a base, an outlet plate having an outlet formed therein generally opposing the base, and a plurality of annular baffles carried between the base and the outlet plate. The annular baffles are spaced apart to define a plurality of inlets. Each of the plurality of annular baffles has an inner diameter, the inner diameters defining an interior void.

Abstract: A check valve for a fluidic system includes a fluidic conduit having an inlet with a first particle barrier, an outlet with a second particle barrier and a fluid chamber between the inlet and the outlet; and at least one particle disposed in the fluid chamber, the particle or particles aggregating at the first particle barrier to form a first hydrodynamic resistance when a first fluid pressure at the inlet is less than a second fluid pressure at the outlet, the particle or particles aggregating at the second particle barrier to form a second hydrodynamic resistance when the first fluid pressure is greater than the second fluid pressure.

Abstract: The invention relates to a non-return valve for a pump, in particular a fuel pump, with a housing (2) in which a valve seat (3) is embodied, a closing body (4) and a cage element. The closing body (4) is arranged within the cage element, whereby the cage body is embodied in two pieces. The cage element comprises a guide element (5) and a stop element (6), such that a functional separation of the regions of the cage element with various functions is possible.

Abstract: A fluid bearing mechanism using a one-way valve with such a simple structure that high processing accuracy is not required. A one-way valve 6 includes a valve base 7; an abutting portion 11 protruding inwardly, formed with a small communication hole 12 in a center thereof; a moveable element 8 which is moveable inside the valve base 7 in an axial direction; and a retaining body 9 for retaining the moveable element 8 between the abutting portion 11 and itself inside the valve base 7. The retaining body 9 includes ventilation grooves 8b, 9c for communicating an inside with an outside of the valve base 7. When the piston 2 is moved toward the compressing direction, the moveable element 8 is shifted toward the inside of the piston 2 due to the inner pressure of the cylinder 1 and its inertial force, thus opening the small communication hole 12.

Abstract: A packing assembly, retrofit kit, and check valve with adjustable lift having a ball stop member having opposed first and second contact portions and at least two washers being provided in a stacking configuration. The stacking configuration is one selected from one in which all of the at least two washers are stacked against the first contact portion of the ball stop member, one in which all of the at least two washers are stacked against the second contact portion of the ball stop member, and one in which at least one of the at least two washers is stacked against the first contact portion of the ball stop member and at least one of the at least two washers is stacked against the second contact portion of the ball stop member. Preferably, the at least two washers are of different thicknesses with, more preferably, the thicknesses of the at least two washers being multiples of each other.

Abstract: A guided ball check valve in which the ball is guided to prevent radial wander. The guided ball valve comprises a valve housing having a cylindrical bore. A conical valve seat is provided at a first end of the cylindrical bore. Axial grooves are formed into the cylindrical wall of the bore to provide means for the passage of fluid through the check valve when open. A spherical ball slides in the cylindrical bore between a closed position in which the spherical ball is seated against the conical valve seat and an open position in which a gap is formed between the spherical ball and the conical valve seat. The spherical ball has diameter substantially equivalent to that of the cylindrical bore such that the cylindrical wall of the bore engages and guides the spherical ball as the spherical ball linearly translates between open and closed positions.

Abstract: A packing assembly, retrofit kit, and check valve with adjustable lift having a ball stop member having opposed first and second contact portions and at least two washers being provided in a stacking configuration. The stacking configuration is one selected from one in which all of the at least two washers are stacked against the first contact portion of the ball stop member, one in which all of the at least two washers are stacked against the second contact portion of the ball stop member, and one in which at least one of the at least two washers is stacked against the first contact portion of the ball stop member and at least one of the at least two washers is stacked against the second contact portion of the ball stop member. Preferably, the at least two washers are of different thicknesses with, more preferably, the thicknesses of the at least two washers being multiples of each other.

Abstract: The present invention provides a ball check valve in which the area of a channel leading from a ball chamber to a discharge-side channel can be increased, and the adhesion of a ball to a valve seat surface is satisfactory even when the ball check valve is used in a horizontal posture. In the ball check valve having a ball (3) movably housed in a ball chamber (2) provided inside a valve casing (1), two or more rail-like ridges (13) protruding toward the interior of the ball chamber to guide the ball (3) are provided on a peripheral wall (10) demarcating the ball chamber (2). Furthermore, valve seats (20a, 20b) constituted separately from the valve casing (1) are mounted, respectively, on the inflow side and the discharge side of the valve casing (1).

Abstract: A quick connector with a one-way flow valve includes a bearing cage mounted in a bore of a female component housing and supporting a tip end of a conduit lockingly held in the housing by a retainer. A projection extends from one end of the bearing cage and spaces a flow ball movably mounted in the housing bore at a first, flow permitting open position wherein flow paths between the male and female components are established around the exterior of the flow ball and between circumferentially spaced ribs formed in the housing and supporting the flow ball. The flow ball is automatically movable in response to a reverse direction acting fluid pressure differential to a second, flow-blocking position in sealing engagement with a valve seat formed in the housing bore to prevent reverse fluid flow through the connector.

Abstract: A fuel pump designed to prevent vapor lock. The pump comprises an inlet check valve located between a pumping chamber and a reservoir. The inlet check valve allows the flow of fluid from the reservoir into the pumping chamber. The inlet check valve is constructed such that when a combination of both liquid and vapor is present in the pumping chamber, the liquid and vapor is allowed to flow from the pumping chamber back into the reservoir; but when the pumping chamber is filled only with liquid, the inlet check valve prohibits flow from the pumping chamber into the reservoir.

Abstract: A fuel injection system has a low-pressure pump for withdrawing fuel from a tank and a high-pressure pump, which is supplied by the low-pressure pump and has camshaft-actuated pump elements. An on-off valve is connected on the inlet side to the pressure side of the low-pressure pump and on the outlet side, is connected on the one hand to a camshaft chamber of the high-pressure pump and on the other hand, is connected to the suction side of the low-pressure pump. At a first pressure threshold, a spring-loaded valve piston of the on-off valve opens a connection between the low-pressure pump and the camshaft chamber and at a relatively higher second pressure threshold, opens a connection between the pressure side and the suction side of the low-pressure pump. A throttle bore in the bottom of the valve piston serves to ventilate the low-pressure system.

Abstract: A quick connector with a one-way flow valve includes a bearing cage mounted in a bore of a female component housing and supporting a tip end of a conduit lockingly held in the housing by a retainer. A projection extends from one end of the bearing cage and spaces a flow ball movably mounted in the housing bore at a first, flow permitting open position wherein flow paths between the male and female components are established around the exterior of the flow ball and between circumferentially spaced ribs formed in the housing and supporting the flow ball. The flow ball is automatically movable in response to a reverse direction acting fluid pressure differential to a second, flow-blocking position in sealing engagement with a valve seat formed in the housing bore to prevent reverse fluid flow through the connector.

Abstract: A ball valve comprising a seat having a first opening thereon, a housing over the seat having a second opening defined by a flap having an inner and outer diameter, and a ball in the housing, the ball having a diameter great than the inner diameter of the flap. The seat may be formed directly onto a metal insert of a bonded piston seal, or directly onto a wall of any chamber needing a ball valve therein. The housing may be formed as an extension of a piece of rubber used to seal the periphery of the insert or chamber wall. Hence, the housing and insert or chamber wall may be molded together as part of a unitarily formed chamber and ball valve combination.

Abstract: The present invention provides a flow-control apparatus with a check function for controlling the flow resistance of a photoresist solution. The apparatus is connected to a photoresist supply device, the photoresist supply device comprising a tank for storing the photoresist solution, a pipe partially submerged in the photoresist solution in the tank to transport the photoresist solution, and a pump for drawing the photoresist solution from the tank. The apparatus comprises a housing and a sphere. The housing comprises a chamber, a top opening positioned at the top of the chamber, and a bottom opening positioned at the bottom of the chamber, wherein the top opening can be mated to an end of the pipe or to a bottom opening of another apparatus. The sphere is moveably set inside the chamber of the housing and increases the flow resistance of the photoresist solution.

Abstract: A high-purity alumina sintered body having an alumina purity of not less than 99.9% by mass and a relative density of not less than 97% and exhibiting a weight loss of not greater than 100×10-−4 kg/m2 when immersed in boiling 6N H2SO4 or 6N NaOH aqueous solution for 24 hours as measured according to JIS R1614 (1993). The high-purity alumina sintered body is obtained by firing a green body formed from an alumina powder having an alumina purity of not less than 99.9% by mass and containing, as impurities, Si, an Mg, Fe and alkali metals including Na, K and Li in a total amount of less than 100 ppm.

Abstract: The present invention provides a flow-control apparatus with a check function for controlling the flow resistance of a photoresist solution. The apparatus is connected to a photoresist supply device, the photoresist supply device comprising a tank for storing the photoresist solution, a pipe partially submerged in the photoresist solution in the tank to transport the photoresist solution, and a pump for drawing the photoresist solution from the tank. The apparatus comprises a housing and a sphere. The housing comprises a chamber, a top opening positioned at the top of the chamber, and a bottom opening positioned at the bottom of the chamber, wherein the top opening can be mated to an end of the pipe or to a bottom opening of another apparatus. The sphere is moveably set inside the chamber of the housing and increases the flow resistance of the photoresist solution.

Abstract: The present invention disclosed and claimed herein comprises, in one aspect thereof, a combination manifold and check valve assembly for a water heater unit which includes a temperature and pressure relief valve and a drain pan. The assembly comprises a manifold body having a first inlet opening, a second inlet opening, and an outlet opening which are in fluid communication. The first inlet opening is adapted for connection to the outlet of a temperature and pressure relief valve. The second inlet opening is adapted for connection to the outlet of a drain pan. The outlet opening is adapted for connection to a drain line. A valve member is disposed within the manifold body between the first inlet opening and the second inlet opening.

Abstract: A head gasket which acts, when clamped between a head and a cylinder block of an internal combustion engine, to form a seal around at least one lubricant or hydraulic fluid passage which extends between the head and the block. The gasket also comprises a non-return valve which extends across said passage and allows flow of liquid in said passage towards the head but prevents flow of liquid in said passage towards the block.

Abstract: A valve for use in a sucker rod actuated fluid pump including a traveling valve assembly and a standing valve assembly within which a vortex is believed to be created to draft the ball check valve from its seat during the stroke of the sucker rod and thereby increase the amount of petroleum fluids pumped to the surface during each stroke of the fluid pump.