Abstract: A ball check valve assembly includes a combination ball valve and spring check valve within a valve assembly. The use of union ends on the valve assembly permits the easy removal and replacement of the components of the valve assembly from a plumbing system. An integral bleeder valve allows for the pressure release and drainage of the ball check valve assembly before the union ends are decoupled.

Abstract: A valve assembly for a dental suction system. The valve assembly includes a valve body having an inlet, an outlet and a fluid flow path extending between the inlet and the outlet. The valve assembly also includes a valve plug positioned at least partially within the valve body and including a through-passage. The valve plug is rotatable relative to the valve body to selectively alter a flow of fluid along the fluid flow path. The fluid flow path exhibits a varied cross-sectional area along a length of the fluid flow path.

Abstract: A seal assembly for use in a fluid valve includes: an actuatable valve body configured to open and close at least one connection of the fluid valve; at least one seal configured to sealingly abut against the valve body at one side of the valve body and to sealingly abut against a valve housing of the fluid valve at another side of the valve body; and at least one elevation from a lateral surface of the valve body integrally formed on the valve body sectionally, the at least one elevation being configured to activate the seal in a closed position of the fluid valve.

Abstract: A bypass feature and an emergency shutdown valve that includes such a bypass feature, which is selectively operable to permit a flow of material to pass through the emergency shutdown valve when a shutoff element thereof is closed so as to otherwise prohibit flow through the valve, as well as an associated method of testing an emergency shutdown valve.

Abstract: The invention relates to a ball valve (1) having an internal seal arrangement, particularly for use in motor vehicle refrigerant circuits, having an actuator (2), a shaft (3) with shaft bearing (5), a ball (4) with a ball passage channel (16) as well as a valve housing (13) with refrigerant connections (15), characterised in that the ball (4) has a floating bearing in the valve housing (13) and that the ball (4) is arranged between two ball sealing seats (9) for this purpose, wherein one ball sealing seat (9) is positively supported by the valve housing (13) and towards which a sealed bearing is provided by a sealing seat ring (10) and that a second ball sealing seat (9) is positively supported by a closure part (17) on the opposite side of the valve housing (13) and towards which a sealed bearing is provided by a sealing seat seal (10), wherein the closure part (17) has a sealed bearing towards the valve housing (13) by means of a closure part seal (22).

Abstract: A valve assembly includes a valve body and a bonnet. The valve body has a cylindrical access channel with adjoining at least one radial keyway. At least one coupling cavity adjoins and is out of register with the at least one radial keyway. The bonnet has a cylindrical body with at least one radially extending lug. The at least one lug is configured and sized to be accepted by the at least one radial keyway and to be housed within the at least one coupling cavity when the cylindrical body is twisted so that the at least one lug is out of register with the at least one radial keyway.

Abstract: A valve includes a housing, a rotational body, two seat rings, a shaft integrally linked to the rotational body, and a sealing element. The rotational body is arranged rotatably in the housing and has a through-opening. The seat rings are spaced apart in the housing, each positioned against an outer surface of the rotational body to seal against leakage. The shaft extends outwardly through a housing opening. Part of the shaft has a spherical outer surface. The sealing element is positioned against the spherical outer surface, and includes a sealing lip and a support ring. The support ring has a spherical inner surface with a curvature corresponding to the spherical outer surface. The shaft is supported on the support ring at the shaft part's spherical outer surface. A flow path is defined by a housing through-opening and a rotational body through-opening, and is closed or at least partially open as determined by a rotational angle position of the rotational body about a rotational axis.

Abstract: The apparatus for uninterrupted flushing a well bore being drilled with a jointed drill string comprises a continuous flushing valve (CFV) and a connector for temporarily attaching a bypass line to the valve. The CFV is a ball-type three way valve in a housing adapted for including in the drill string. Inside the housing there are two axial and two side sealing seats which provide for flow only through designated paths. The plug is prevented from loosening by a spring. An operating stem is mounted to operate the valve by a wrench from outside the housing. A connector facilitates fast tying a hose of a bypass line to the side port. A securing mechanism keeps a valve ball in full open position while a CFV is in the well.

Abstract: The present invention relates to an apparatus for a flanged connection between a tubular member having a flange and a valve fitting having a valve flange and a valve body, and in particular to an apparatus for axially loading the mated threads of the valve flange and the valve body after geometrical alignment of the bolt holes of the flange on the tubular member and of the bolt holes of the valve flange.

Abstract: A drain valve and method for assembling a drain valve. A valve assembly is inserted into a pipe, and a reduced diameter portion is formed in the pipe to create a substantially water-tight seal between a portion of the valve assembly and the pipe. A second reduced diameter portion may be formed in the pipe to provide a thrust bearing surface for resisting sliding movement of the valve assembly within the pipe. A transverse hole is provided in the pipe to provide access to a rotatable mechanism in the valve assembly to permit and restrict fluid flow through the drain valve.

Abstract: A high differential pressure, low torque precision temperature control valve is disclosed herein. This valve is trunnionated with stem components that are separable from the plug for ease of maintenance and manufacturability and thus reducing the need to remove the entire plug and sealing assemblies in the field. Field repair of stem sealing devices can be accomplished inline . The stem design can be smaller in diameter with smaller bearing surfaces than would be anticipated creating a lower requirement of torque to rotationally transposition the plug within the fluid chamber while under high pressure. This valve's lower trunnionated stem is stationery reducing the problems associated with o-ring failure and leakage problems with objects that rotate. Due to the design of the orifices in the plug, this valve is capable of repeatability at lower opening ranges than prior art valves and reduces jetting, caviation and erosion often associated with lower opening ranges.

Abstract: A ball valve includes symmetric first and second valve casings (100) and (200) which respectively have first and second ball seats (120) and (220), first and second coupling flanges (130) and (230), first and second lever receiving parts (110) and (210), first and second ring-shaped grooves (132) and (232), a plurality of first and second coupling holes (131) and (231), and first and second stoppers (111) and (211). The ball valve further includes a ball (400) which is seated in both the first and second ball seats (120) and (220), a control lever (300) which is coupled to the ball (400) to control the ball, and a ring unit (500) which is seated in both the first and second ring-shaped grooves (132) and (232). The ball valve further includes a cap (600) which is fastened to both the first and second lever receiving parts (110) and (210).

Abstract: The invention provides a ball valve excelling in economy due to the efforts devoted to the reduction of cost, enjoying light weight and high reliability, manifesting high and uniform accuracy, and enabling manufacture of compact finished products having a small interface dimension, and provides a method for the production of the ball valve. The ball valve includes a body formed from a pipe having a predetermined length by subjecting opposite terminal parts (ends) of the pipe to a plastic processing including flaring and diametrical contraction. The body has at a central position a seat-shaping part (seat) formed with a stem-inserting hole, a stem inserted into the stem-inserting hole, a ball disposed non-rotatably at a lower terminal of the stem, and a pair of inserting members having an annular shape forced into the body from opposite terminals of the body. Opposite terminal faces of the body are compression-formed so that the pair of inserting members receive and support the ball rotatably.

Abstract: A two piece side split ball valve with internal corrosion resistant plastic lining (4, 5), with an integral actuator mounting flange (30) for easier, cheaper & direct mounting of any standard actuator, with a single piece ball-stem (3, 7) for accurate control of the rotation & positioning of the ball (3), with energized seat rings (8, 9) for bubble tight shut-off and with means (14, 15) to prevent cold flow of lining sealing faces (16, 17) of the two body halves (1, 2) having metal to metal contact.

Abstract: A ball valve includes a body having a passageway there through with a ball member disposed in the passageway and mounted for selective rotation between valve open and valve closed positions to control fluid flow. A pair of flange grooves are provided in the body on opposite sides of the ball, each flange groove extending radially from the passageway. A pair of seat rings are disposed in the passageway on opposite sides of the ball. Each seat ring has a first sealing surface in contact with an outer surface of the ball and a radially extending annular flange or tab received in an associated one of the flange grooves. The seat design further includes a pair of annular flange seals each disposed in a respective one of the flange grooves. The seat configuration achieves a cantilever effect to improve the temperature and pressure cycling performance of the valve.

Abstract: The invention provides a ball valve excelling in economy due to the efforts devoted to the reduction of cost, enjoying light weight and high reliability, manifesting high and uniform accuracy, and enabling manufacture of compact finished products having a small interface dimension, and provides a method for the production of the ball valve. The ball valve includes a body formed from a pipe having a predetermined length by subjecting opposite terminal parts (ends) of the pipe to a plastic processing including flaring and diametrical contraction. The body has at a central position a seat-shaping part (seat) formed with a stem-inserting hole, a stem inserted into the stem-inserting hole, a ball disposed non-rotatably at a lower terminal of the stem, and a pair of inserting members having an annular shape forced into the body from opposite terminals of the body. Opposite terminal faces of the body are compression-formed so that the pair of inserting members receive and support the ball rotatably.

Abstract: A ball valve assembly of the quarter-turn type for use in isolating an electronic level transmitter comprising a valve body having an inner chamber, an inlet or tank-side port, an outlet or transmitter side port, a valve body axis defined by the inlet and outlet ports, and a substantially spherical ball valve member having an inner surface forming a through passage mounted in the chamber for selective rotation between an open position and a closed position. The present invention allows for flushing the diaphragm face of a level transmitter with the ball valve member in an open position via a purge port positioned on the valve body and a purge passage connecting the through passage and a seating face portion of the outer surface of the ball valve member. The present invention is provided with a full port opening through the ball valve assembly for enhancing the accuracy of level transmitter readings and valve backflush capabilities.

Abstract: A ball valve includes a body having a passageway there through with a ball member disposed in the passageway and mounted for selective rotation between valve open and valve closed positions to control fluid flow. A pair of flange grooves are provided in the body on opposite sides of the ball, each flange groove extending radially from the passageway. A pair of seat rings are disposed in the passageway on opposite sides of the ball. Each seat ring has a first sealing surface in contact with an outer surface of the ball and a radially extending annular flange or tab received in an associated one of the flange grooves. The seat design further includes a pair of annular flange seals each disposed in a respective one of the flange grooves. The seat configuration achieves a cantilever effect to improve the temperature and pressure cycling performance of the valve.

Abstract: A ball valve assembly has a lower support, an upper seat, a spherical ball, and linkages for rotating the ball. The lower support has a spherical support surface for the ball. The lower support also has a pair of guides for maintaining alignment of the ball and seat to prevent contact with the linkages. The upper seat has a skirt with a spherical inner surface having grooves for contacting the ball. The skirt and grooves seal and ensure alignment of the ball. The grooves also assist in the retention of lubricant to reduce friction. An optional insert is located in the skirt for low pressure sealing from below and above. Finally, the skirt has a pair of openings to provide relief for the operating links, and flat structures against which the guides of the lower support may restrain rotation of the upper support.

Abstract: A valve for controlling fluid flow is provided. The valve includes an actuating stem for controlling the flow of fluid through the valve, a valve member with a positioning formation and an opening for permitting fluid flow, a valve body portion, and at least one insert or compressor for retaining the valve member within the valve body portion. The valve body portion is comprised of a formable material—such as a metal—that is formed about the valve member in connection with an applied load. The valve body portion further includes a first open end with a first diameter; a second open end with a second diameter that is sufficiently large enough to permit insertion of the valve member; a stem opening for receiving the actuation stem; and an internal member-receiving portion for receiving the valve member in proximity with the stem opening.

Abstract: A ball valve includes a bonnet and a removable insert in which a valve ball and opposed seat rings are contained within a cartridge of separable shells. Cylindrical spring seals of resilient and impervious high density graphite or silicon ruber are mounted on a reduced diameter length of each seat ring. Other embodiments include annular coil springs which compensate for component wear, and contraction and expansion due to changes in temperature. The spring seals are compressed between shoulders on the seat rings and a facing annular recessed surfaces in the cartridge and urge the seat rings into dynamic sealing contact with the valve ball. The spring seals also provide static sealing at the interface of the seat rings and the cartridge. Connecting fittings on mating surfaces of the bonnet and the insert enable the insert to be completely removed from the valve body for easy access for repair or replacement of components within the cartridge.

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: A valve with fire-resistant seal for use in industrial piping applications. The valve includes a valve body with a valve element therein. The valve is illustrated as a ball valve, but other valve configurations could also be used. A valve stem engages the valve element so that it can be rotated between open and closed positions. A conventional primary seal is used on the valve stem for normal conditions. The valve body defines a body bearing surface, and the valve stem defines a facing stem bearing surface. A thrust bearing is disposed between the body and stem bearing surfaces, and a fire-resistant seal is positioned radially inwardly from the thrust bearing. Initially, the fire-resistant seal is not engaged with at least one of the body or stem bearing surfaces, and the fire-resistant seal has a thickness less than an initial thickness of the thrust bearing.

Abstract: The invention relates to a shut-off valve 1 for pipelines and/or for tanks that hold liquids. The shut-off valve 1 has two-part valve housing 3 with a passage opening 4. In the passage opening 4, there is likewise a sliding and/or rotatably supported, spherical closure element 5 that likewise has a passage opening 4′. The closure element 5 is surrounded by two half-shell shaped sealing shells 6, 7. The sealing shells 6, 7 form a passage opening 4″ that corresponds to the passage opening 4′ of the closure element 5 and consist of a softer or more elastic material in comparison to the closure element 5. Each of the sealing shells 6, 7, at least on their opposite faces 8, has a ring-shaped device 9, 9′ for purposes of securing between the housing halves, the valve housing 3, 3′ or between the flange 28 of the valve housing 3, 3′.