Abstract: Valves having seats and counterseats that can be moved by fluid within the valve. In one embodiment, a valve includes a flow control assembly inside a body. The flow control assembly includes a ball rotatable between an open position and a closed position to control flow, a seat installed on the ball, and a counterseat installed in the body. The seat and the counterseat can move radially with respect to the ball and have mating surfaces that engage and seal against one another when the ball is in the closed position. The flow control assembly allows pressurized fluid in the body to cause net forces on the seat and the counterseat that push the seat and the counterseat toward each other when the ball is in the closed position. Additional valve systems, devices, and methods are also disclosed.

Abstract: A dosing device for feeding an infusion product includes: a tower for containing product, tubular channels for feeding the product to the tower; each channel configured to pick up the product from the tower and release a quantity of product; a plurality of containers for receiving the product from the channels; a platform movable relative to the channels supporting the containers one after another. The platform is configured for carrying, in sequence, each container to a first position for feeding a quantity of product less than the weight of a programmed dose and, subsequently, to a second position for feeding a remaining quantity of product for reaching the weight of the programmed dose. A plurality of weighing elements control the weight of the product in each container and a control unit controls the quantity of product fed to each container and the relative movement of the platform.

Abstract: A seal carrier for a ball valve includes a carrier body to be located between a ball and a portion of a valve body. The carrier body may have an annular channel for carrying a ring seal in a side to be located proximate the ball. A spring is located at a peripheral portion of the carrier body. An end portion of the spring is configured to abut against the portion of the valve body, and the spring is configured to provide a compressive force between the portion of the valve body and the ball in a direction parallel with the direction of fluid flow through the ball valve assembly. A ball valve assembly may include such seal carriers. Methods of forming such seal carriers are also included.

Abstract: A flow path switching valve arranged to rotate a main valve with an auxiliary valve to switch a cooling state and a heating state, which provides a reliable operation of the main valve by simplifying the rotation movement of the auxiliary valve and the main valve and provides reduced switching time. An outdoor heat exchanger-side pressure equalizing hole and an indoor heat exchanger-side pressure equalizing hole are formed at the main valve. An occluding portion for opening and closing of the pressure equalizing holes is formed at the auxiliary valve. The main valve is rotated 90 degrees by merely operating the auxiliary valve along one direction in forward or reverse direction to switch between the cooling state and the heating state.

Abstract: An oil and gas collection and transmission system for petroleum, chemical industry, and so on, includes a multi-way valve with a fan-shaped flow channel sealing pair to measure production of an individual well to obtain the dynamic production data of an oil well. The multi-way valve with fan-shaped flow channel sealing pair includes a floating gating ring that is applied with contact specific pressure by an elastic component and an upper porous plane body form a gating plane sealing pair; a plurality of fan-shaped flow channel oil inlet holes are annularly and uniformly distributed on a mating surface of the upper porous plane body; the floating gating ring is configured such that it changes gradually from the upper fan-shaped flow channel to the lower round-shaped flow channel; and the inner part of the middle rotary spool is used as a public flow-guide passage.

Abstract: A ball valve having reduced torque requirements for rotation is presented. Torque reduction is realized by providing a shaped sealing back member to provide a back force behind essentially the entire sealing surface of the downstream seal. Torque reduction is also realized by providing a dynamic sealing configuration that varies the sealing force over the valve's operating pressure conditions. An initial bias sealing force is applied by a spring member which also provides a low uniform as-assembled valve torque. As fluid pressure increases, the sealing pressure also increases as an o-ring is forced along a ramped surface of the seal. As inlet pressure decreases, the o-ring is allowed to back down the ramped surface to reduce the sealing force against the valve member. This sealing configuration allows for reverse flow or improper installation of the ball valve, and bottoms out to maintain a sealing force at higher back pressure conditions.

Abstract: Rotary sequencing valve comprising a rotor having a rotor face rotatable about an axis perpendicular to the rotor face, wherein the rotor face has a plurality of openings, one or more of which are disposed at a selected radial distance from the axis, and wherein the rotor includes at least one passage connecting at least one pair of the plurality of openings. The valve includes a flexible port plate having a first side and a second side, wherein the first side faces the rotor and engages the rotor such that the flexible port plate can be rotated coaxially by the rotor and can move axially with respect to the rotor, wherein the flexible port plate has a plurality of ports between the first and second sides, which ports are aligned with the openings in the rotor face.

Abstract: A cylindrical housing has a flange at an exterior end, male threads in an external surface remote from the flange, and a small axial hole, and female threads in an internal surface remote from the flange. A disk shaped fastener has internal threads rotatably supported upon the male threads of the housing. The fastener rotates to secure a prosthetic limb adjacent to the flange for operation and use and to allow separation of the limb from the housing. A cup-shaped end plug has a side wall with male threads receivable in the female threads of the housing and an end face with an axial opening. A plug with a pull string is positionable within a partly spherical surface adjacent to the interior end of the housing. A coil spring is positioned between the end plug and the spherical plug.

Abstract: A diverter valve includes a fixed body (11) with a central inlet connection (12) and several outlet ducts (17) circumferentially spaced about the inlet connection. A rotatable valve member (21) has a center inlet duct (25) in fluid connection with a radially spaced outlet (27) that can be rotatably moved to be aligned with a selected outlet ducts (17) or misaligned to be in a shut off position. The inlet connection (12) and outlet (27) house sealing elements that provide sealing against leakage for the respective ducts.

Abstract: A duplex fluid filter assembly has first and second alternate duty filters. A valve assembly controls fluid flow between respective alternate flow paths. The valve assembly has a stationary valve body having an inner cylindrical wall defining a hollow cylindrical interior extending along an axis, and plural radial ports having inner ends opening into the hollow interior and communicating with an inlet, an outlet, and respectively entrances and exits of respective flow paths. A movable valve member has an outer cylindrical wall defining a cylinder extending along the axis in the hollow cylindrical interior of the valve body, and is rotatable about the axis. The valve member has first and second axially spaced interior passages, and first and second sets of transfer passages extending radially outwardly from respective interior passages.

Abstract: A switch valve 10 is provided with an upper body 14 having a plurality of outlet ports 20A, 20B, and 20C and a lower body housing 16 with inlet port 18. The switch valve includes a ball member 22 which is rotatable within the switch valve body 12 for selective fluid communication between the inlet port 18 and the selected one of the plurality of outlet ports. The ball 22 is rotated by a stem 28, which may be powered by an actuator unit. The upper body 14 includes a substantially dome-shaped seating surface 40 for sealing engagement with the outer surface 38 of the ball. The biasing member 48 biases the ball radially in a direction opposite the ball inlet port 24 to obtain the desired sealing engagement. The biasing member is preferably a Belleville spring 48 having a single wrap design.

Abstract: The present invention relates to an improved disk-type faucet that can be used to replace the ball-type faucet. The faucet includes a switching cylinder that can be rotationally disposed within the housing. The switching cylinder includes a controlling stem atop. The switching cylinder further includes a pair of annular grooves that are located below the controlling stem and each of them being disposed with an O-ring, respectively. The lower end of the switching cylinder includes a semicircular tab and a resilient plate for blocking the water flow. The semicircular tab is further enveloped with a bushing that is fixedly fastened by the resilient plate. By the biasing action of the resilient tab, the bushing and the resilient plate are provided with an allowable movement within the housing such that the wearing resulted from over-tight can be therefore prevented and the manipulation can be more conveniently conducted to open or close the faucet.

Abstract: A diverter valve has an IN port and first and second OUT ports which are positioned along an arcuate path. A rotor has an external control knob and a stem extending within the cavity of the valve body. Mounted on the stem, at right angles thereto, is a closure pin which extends into the bore of the hub of a mushroom-shaped closure element. The surface of the domed head of the closure element is in contact with an O-ring seal at one of the OUT ports. When the rotor is moved, the O-ring, in contact with the surface of the domed head, cams the closure element inwardly causing the element to slide on the closure pin and causing the closure pin to enter more deeply into a recess in the head of the closure element. When the closure element is in place to close-off one of the OUT ports, the other OUT port is opened and the pressure of the water flowing through the valve exerts a direct pressure on the flat annular undersurface of the head of the closure element.

Abstract: A valve has a housing forming a compartment traversed by an axis and having a radially opening outlet port and an axially open inlet port, a valve plate fixed in the housing and formed relative to the flow direction with a flat upstream face and with an axially throughgoing valve orifice opening at the face, and a control plate in the housing formed relative to a flow direction through the valve with a flat downstream face riding on the valve-plate face, an axially throughgoing control orifice opening at the face, and an axially open and radially elongated socket on the face adjacent the respective orifice. The control plate is pivotal on the valve plate about the axis for alignment of the orifices and flow through the valve from the inlet port to the outlet port and for misalignment of the orifices for restricted flow from the inlet port to the outlet port.

Abstract: In a housing having an inlet opening and an outlet opening, the shut-off mechanism has a rotary plug for interrupting the flow of flowable material through the housing. Via the rotary plug the outlet opening is gas-tightly sealed and a flow of material through the inlet opening is prevented. The rotary plug is provided with a sealing member, which is rotatable about an axis which is approximately at right angles to the axis of rotation of the rotary plug. The sealing member cooperates with the valve seat, which is associated with the outlet opening. A compression spring extends between the sealing member and the rotary plug and is laterally spaced from the axis of rotation of the sealing member. Upon a movement of the rotary plug the compression spring will impart a certain rotation of the sealing member without a need for a drive.

Abstract: A plastic spring loaded shut-off valve for drains in live wells of boats seals without the presence of fluid pressure. This effect is achieved by a biasing spring urging sealing flaps against the valve ports. The flaps are curved and have ribbed edges to accomplish such sealing and prevent jamming of the ports. The biasing spring is secured to a rotating member through slots while the flaps are secured to the member by buttons. The spring and flap are also secured by a bar across the flap, which has a bearing pad where it is contacted by the spring. The rotating member is rotatable on the underside of the valve top screwed to the valve body. Stops on the inside of the valve top limit its rotation.

Abstract: There is disclosed a ball valve which includes a ball closure rotatably mounted within a cavity formed in a main portion of the valve body and spring pressed against a seat ring on one side of the ball closure, and an end portion of the valve body which is removably connected to the main portion to close an opening from the end of the cavity through which the ball closure, seat ring and spring may be removed.

Abstract: A water tap has a closure member in the form of a rubber or like cup 34 located in a chamber in carrier 32. The base of the cup extends across the port 28 which is to be closed when the tap is in "off" condition and the base of the cup has a hole 38 registered with the port in that off condition. Hence water can flow into the cup and the water pressure in the cup acts to hold the cup on the seat whereas pressure in the port acts against the base of the cup in the opposite direction but on a smaller area of cup. Hence the higher the water pressure the better the seal.

Abstract: There is disclosed a ball valve which includes a ball closure rotatably mounted within a cavity formed in a main portion of the valve body and spring pressed against a seat ring on one side of the ball closure, and an end portion of the valve body which is removably connected to the main portion to close an opening from the end of the cavity through which the ball closure, seat ring and spring may be removed.

Abstract: A faucet valve comprising a removable cartridge which snaps into place, a taper-shaped insert that keys into a valve body and which fits tightly into a tapered annular ring. The lower portion of the cartridge has an external stop spanning over 90 degrees for stable stoppage of the faucet handle. The cartridge snaps together with the insert so that it can't fall out or become disengaged during assembly or normal usage. The insert has two straight projection keys which lock it into place on the valve body (i.e. prevent it from rotating on the valve body). The insert is tapered on its lower end so as to fit securely into a tapered annular ring. A locking cap secures the insert, and the pieces therein, in place vertically on the valve body.

Abstract: A single metal-seated ball valve can accommodate differential temperature expansion of the components without jamming yet provide tight shutoff in a closed position, and provides tight shutoff even if solids are present in the fluid being valved. The valve includes a valve body with a through-extending bore and interior cavity, and a rotatable valve element (such as a ball) having a through-extending passageway and mounted for rotation about an axis for movement between the first, open position in which the passageway and bore are generally aligned, and a second, closed position wherein the passageway and bore are not aligned. A metal sealing ring, or a machined sealing surface of the metal valve body, sealingly engages the valve element and prevents flow of fluid through the bore when the valve element is in its second, closed position. A pair of elongated flexible linear spring elements bias the valve element into sealing relationship with the sealing ring.

Abstract: This disclosure sets forth a variable tensioning system for use in a valve featuring shear seals. In the preferred and illustrated embodiment, a spring system provides loading on the valve element to force that element into engagement with a valve seat. A sliding sealing surface is accomplished in this contact. The valve element may be a tapered plug, a sphere or a flat face or plate. Typically, it is a hard member working against a seat supporting a seal surface featuring a sliding shear seal. A specific minimum load is applied to the valve element to accomplish sealing against minimum pressure. The present apparatus incorporates a closed chamber enclosing a slideable piston. The piston has a specific cross-sectional area exposed to fluid pressure of the fluid being controlled by the valve. The piston applies pressure dependent force against the valve element.

Abstract: An improved valve is disclosed. In the preferred and illustrated embodiment, the valve utilizes a flat disk within a valve body, the disk supporting a peripheral groove having bearings therein for alignment and to enable rotation, and further includes pressure balanced opposing faces and receives a valve seat therein. The flat disk and body arrangement reduces the size of a large valve and reduces the wear occurring on the valve seat and seal mechanism. Alternate embodiments and configurations are disclosed.

Abstract: An improved valve is disclosed. In the preferred and illustrated embodiment, the valve utilizes a flat disk within a valve body, the disk supporting a peripheral groove having bearings therein for alignment and to enable rotation, and further includes pressure balanced opposing faces and receives a valve seat therein. The flat disk and body arrangement reduces the size of a large valve and reduces the wear occurring on the valve seat and seal mechanism. Alternate embodiments and configurations are disclosed.

Abstract: The present invention concerns a shut-off valve comprising a valve body with at least two flow ports, two shutters and a turning shaft. Said shutters are placed opposite each other on an annular spring which forms the lower part of the turning shaft and by means of which the shutters are pressed against and carried along the inner surface of the valve body, or housing, closing simultaneously said two flow ports. The spring is further braced against the bottom of the valve body, or its tensioning device, in the axial direction of the turning shaft.

Abstract: A valve controls the rate of flow of fluid through its outlet pasage by selective alignment with the passage of a jet having an orifice of area less than that of the outlet passage. A plurality of jets in a single valve provides variable flow rate control and interchangeability of jets allows use of the same valve in a wide variety of applications and environs. The same valve can further be easily adapted for continuous or intermittant flow operation.

Abstract: A control valve particularly suitable for service in mechanical refrigeration systems has a spherical valve body permanently engaging an annular seal and is operated by turning the valve body about an axis perpendicular to the direction of fluid flow through the central opening in the valve seat. A circumferentially flaring notch in the outer circumference of the valve member by-passes the valve seat in the open angular position of the valve member and communicates only with the inlet or the outlet of the valve in the closed valve position.

Abstract: A water valve for lavatory, garden and other use having a housing forming a chamber with a fluid inlet in the bottom wall and a fluid outlet port in the side wall has a replaceable seat means on the bottom wall. The valve has a valve means mounted for rotation about the longitudinal axis of the valve, and a cover journalling said valve means is screwed into the top of the valve body. The replaceable seat means is a multi-purpose element, having a planar surface for engagement by the valve means a cylindrical liner for the inlet port, and stop means to limit the travel of the valve means.

Abstract: Control arrangement for a reversible hydrostatic axial or radial piston machine comprises a fluid guiding outer annular space surrounding a control body consisting of an eccentric disk connected to the shaft of the machine for rotation therewith and an inner control ring which is freely turnable on the periphery of the disk, as well as an outer control ring telescopingly and sealingly guided on the inner control ring, in which the rings are hydraulically and by spring pressed apart in axial direction, with one of the control rings engaging with an end face thereof a planar control face of the machine and the other of the control rings engages with an end face thereof a planar support face, which is axially spaced from and parallel to the planar control face, and wherein the eccentric disk has a hub surrounding the shaft and having an end face which, supported by the force of a spring, is hydraulically pressed against the control face, whereby the disk with the end face on its hub and one of the control rings

Abstract: A ball valve consisting of a housing having a spherical flow control ball located therein and a pair of tubular sealing members, one on each side of the flow control valve. The tubular sealing members having spherical seats seated in the through flow passage of the housing and sealingly engaging the flow control ball. The tubular sealing members have through passages which have axes inclined towards each other at an obtuse angle. The flow control ball is urged towards the tubular sealing members in a direction tending to increase the obtuse angle between the axes of the through passages of the sealing members whereby to maintain a sealing pressure between the flow control ball and the tubular sealing members.

Abstract: The present invention concerns a shut-off valve comprising a valve body provided with at least two passage ports and a shut-off member of the passage ports with its operating shaft rotatably carried in the valve body, said shut-off member being connected with the operating shaft by means of an arcuate member, which rests against a staying member on the bottom of the valve body and is elastic, in such manner that the shut-off member may be shifted from one passage port to another by turning the operating shaft, whereby the shut-off member is pressed against the inner surface of the valve body, radially urged by the arcuate member. The valve comprises an adjustable tensioning means, against which the arcuate member is braced and by adjustment of which the pressure of the shut-off member against the inner surface of the valve body is adjustable with change of the curvature of the arcuate member.

Abstract: A ball or spherical plug valve has a pair of annular seal rings with outer peripheral portions thereof mounted in contact with the valve chamber end walls and inner annular edge portions thereof in sealing contact with the ball member and in a spaced relation to the end walls when the ball member has not been displaced by fluid pressure. Each seal ring has a substantially sharp inner edge portion contacting the ball member in substantially a line contact with the ball member when the ball member has not been displaced by fluid pressure. Each seal ring has a substantially flat inner side portion adjacent to the substantially sharp edge portion and the ball member.

Abstract: A fluid valve particularly suited for controlling the flow of coolant in an automobile heater system and a vacuum responsive servo for actuating the valve. The valve, two embodiments of which are disclosed, has improved sealing means and the servo includes improved sealing of the diaphragm with respect to the servo actuating element and an improved two-piece servo housing. A novel connection between the servo and the valve is also provided, having reduced backlash and less tendency to bind.