Abstract: The present invention relates to a ball plug for taps or valves for controlling the flow of a fluid, comprising at least one main passage (15) adapted for placing inlet and outlet ducts in communication, and at least two secondary holes or passages (19, 20) adapted for placing the main passage (15) in fluid communication with the plug seat (13) in the valve body so that part of the inlet fluid is sucked towards the outlet duct passing through said seat.

Abstract: A ball valve has a valve body having proximal and distal portions, a seat assembly that is compressed by the valve body, a flow control ball, and an actuator for actuating the flow control ball between open and closed positions. The seat assembly may include proximal and distal seats, a medial gasket, and O-rings. The flow control ball has a ball body having an outer surface that includes at least one shoulder and a neck, the at least one shoulder having a larger radius than the neck.

Abstract: A completion suspension valve system is described which allows a well to be suspended and desuspended remotely without a dual bore riser to the surface. This is achieved by incorporating a remotely actuatable valve into the production bore of a tubing hanger. The valve is hydraulically operable and may be controlled via the tubing hanger running tool or via the xmas tree. The valve can be closed and tested after the tubing hanger has been installed, thereby isolating the well. The dual bore riser and running tool are retrievable and the MODU type vessel is then free to continue drilling and completion operations elsewhere. The xmas tree can therefore be deployed from a workclass supply boat instead of a MODU type vessel.

Abstract: Seals, ball valve assemblies, and methods of operating ball valves assemblies are provided. The seal includes an annular jacket, a restrictor, and a spring energizer. The annular jacket includes a first annular pocket and a second annular pocket. The restrictor is disposed in the first annular pocket and is capable of restricting shrinkage of the first annular pocket to a predetermined diameter range, if the seal is exposed to a temperature within a predetermined temperature range. The spring energizer is disposed in the second annular pocket and is configured to supply a force against the annular jacket to maintain the seal against a contact surface.

Abstract: A fluid flow control device includes a valve body, a bonnet, a control assembly, and a seal assembly. The valve body defines an inlet portion, an outlet portion, a bonnet opening, and a fluid flow path extending between the inlet portion and the outlet portion. The bonnet is disposed in the bonnet opening. The control assembly is at least partly supported by the bonnet, and includes a ball element disposed within the valve body and rotatable between an open position and a closed position. The valve body defines an internal recess at a location downstream from the inlet portion and adjacent the bonnet opening. The seal assembly is disposed within the internal recess and includes a movable sleeve seal, a retaining device, and one or more sealing elements for preventing leakage between the sleeve seal and the retaining device and/or the valve body.

Abstract: An apparatus for providing flushing fluid at different rates has a valve for controlling flow through a housing, the valve having a reset area to close the valve, a first bleed valve for constantly providing high pressure fluid to the reset area through a first path, a second bleed valve for providing high pressure fluid to the reset area through a second path, and an actuator. The actuator has a first position in which fluid is prevented from escaping from the second path, a second position in which fluid is allowed to escape from the second path and the second bleed valve is activated, and a third position in which fluid is allowed to escape from the second path and the second bleed valve is deactivated.

Abstract: A seal assembly is provided for a rotary ball valve having a top-mounted bonnet, thereby allowing the seal assembly to be installed and removed without removing the valve from the pipeline. In an embodiment, the seal assembly may include a seal ring disposed within the valve interior and biased toward the ball element of the valve. A seal carrier may be disposed between the seal ring and the valve body, and the seal carrier may be removably secured to the valve body by a plurality of bolts disposed in the valve interior. A primary leak path may exists between the seal ring and the seal carrier and a secondary leak path may exists between the seal carrier and the valve body. A first and second auxiliary seal may prevent fluid flow through the primary and secondary leak path, respectively.

Abstract: A valve includes a valve ball and a complex metal valve seat having a groove for receiving a low pressure seal and a convex ridge on each side of the groove. The valve ball contacts only the low pressure seal at relatively low pressures and contacts the convex ridges at relatively higher pressures to provide a metal-to-metal seal. Typically, the low pressure seal is an O-ring and the volume provided by the groove and its transition to the convex ridges is sufficient to accommodate the volume of the O-ring when the valve ball contacts the convex ridges.

Abstract: It is inevitable for the tight closure of a ball valve to be disturbed by its ball's wedging action, and its ball seat is an upset impulse amplifier with an inherent disturbance resistance index or a sealing maintaining factor m. The ball valve seat designed with equilateral triangle section methods of the invention can positively ensure itself a resistance to ball-wedged disturbance from eccentric drive to make a ball valve realize its tight closure by the floated pressure of balls or seats onto each other and ensure that the ultimate rotational resistance to the ball only relates to the ultimate pressure from/on one seat.

Abstract: An apparatus for controlling the flow of fluid may include a main passageway for conducting the fluid and the valve which may include a rotatable valve cavity having a ball check. The rotatable valve cavity may be rotatable with respect to the main passageway to provide at least three positions including a bypass position, a closed position and a run position. The valve may include an outlet for connection to the sight glass, and the apparatus may include a bleeder valve. The apparatus may include a sight glass which may be in fluid communication with the valve.

Abstract: A ball valve seat arrangement is provided that permits relief of cavity pressure. The arrangement includes a valve body for receiving a resilient annular seat. First passages in the seat provide communication between the valve cavity, and a space formed between the seat and the valve body. When the cavity pressure reaches a certain level, a sealing point between the seat and the valve body is lost. Communication is thereby provided between the space and the valve passage to achieve cavity pressure relief.

Abstract: A by-pass valve fitting assembly in which the valve element is retained in a cage having a front end support rigidly trapped between a cylindrical body and an inlet fitting, with the other end cantilevered in a flow cavity of the body, such that the biasing spring is seated in the cantilevered support to urge the valve element through the front support against a sealing face on the inlet fitting.

Abstract: A ball valve, in particular for highly pressurized media, with a valve housing (1) in which a ball spindle (16) which is pivoted around an axis in the housing (1) at an axial distance from the pivot support has a ball body (12) as a blocking element between the input part and the output part of a passage (4) of the housing (1) for media, and the flow opening (14) located in the ball body (12) can be oriented to the passage (4) for media for unblocking the ball valve by turning the ball spindle (12), characterized in that the ball spindle (12) is supported on two end sections (8, 10) which are made identical and which are connected to the ball body (12) on both sides and that the support on at least one end section (8, 10) is formed by a support cover (26) which has integrated slide bearing elements (34, 36) and which can be detachably mounted on the housing (1).

Abstract: A valve operable to control flow between two adjacent pipe sections and having a system for relieving pressure from an enclosed cavity within the valve. The valve includes a first pressure port, a second pressure port, and a seal. When the valve is closed, the first pressure port is in fluid communication with one pipe section and the second pressure port in fluid communication with the enclosed cavity. The seal isolates the second pressure port from the first pressure port when fluid pressure within the enclosed cavity is less than a pre-selected valve and is displaceable to enable fluid communication between the second pressure port and the first pressure port when fluid pressure in the enclosed cavity is equal to or greater than the pre-selected value.

Abstract: A system, in certain embodiments, includes an annular ball valve seat including an annular spring, which biases the annular ball valve seat axially. More specifically, in certain embodiments, the annular ball valve seat includes a main body section, a lip section extending from the main body section, and a seat groove between the main body section and the lip section, wherein the first annular spring is disposed within the seat groove. A first leg of the annular spring biases the lip section in a first axial direction and a second leg of the annular spring biases the main body section in a second axial direction opposite the first axial direction. The annular ball valve seat is configured to be disposed within a ball valve, on either side of a ball of the ball valve. The particular design of the annular ball valve seat enables pressure within a body cavity of the ball valve to be self-relieving.

Abstract: A valve assembly includes a valve body with an inlet, an outlet, and a chamber extending between the inlet and the outlet and an actuation sub-assembly. Positioned in the chamber is a flow restrictor, which is positionable between a valve open position wherein the fluid communication between the inlet and outlet is open and a valve closed position wherein the fluid communication between the inlet and the outlet is closed. A slow-close actuation sub-assembly includes a stem for engaging the flow restrictor, and includes a handle and plurality of annular members disposed around a shaft for resisting rotation of the shaft via the handle.

Abstract: A ball valve having an anti-rotational pressure plate that allows for a balanced pressure load on a valve member is provided. Additionally, the pressure plate can also fix the rotation of an adjacent flow disk, allowing for angular-orientation specific flow characterizing features to be used with the flow disk. By fixing the rotation of the flow disk, the ball valve can characterize flows using a greater variety of flow disk geometries, including angular-orientation dependent and angular-orientation independent flow disks. Further, the pressure plate could also be directly in the form of a flow disk that has anti-rotation features.

Abstract: A valve assembly is provided having two valve sections, each having a tubular passageway portion and when joined together, defining a ball cavity in communication with the tubular passageways. One of the body sections is provided with an inlet/outlet in communication with the ball cavity as well as a spindle flange. An elongate spindle extends through the spindle flange projecting into the ball cavity region to rotate a spherical ball element between an open and a bypass position. The ball valve has a primary elongate passage which interconnects the two tubular passage portions in the valve body sections when the ball valve is in the open position. When the ball valve is rotated to the bypass position, the tubular passage portion of one of the ball body sections is sealed closed while the other tubular passage portion communicates with an internal bypass port within the ball valve which in turn, communicates with the auxiliary inlet/outlet.

Abstract: A system, in certain embodiments, includes a ball valve including a body and a ball disposed within the body. The ball valve also includes a stem disposed within an opening in the ball. The stem is removable by passage through the opening into a bore of the ball.

Abstract: A ball valve comprising: a valve body with a seat for housing a ball provided with a coaxial through-opening and able to be rotationally operated from a closed valve position into an open valve position and vice versa; two opposite end flanges which are constrained to the valve body on opposite sides of the ball and provided with a respective, coaxial, internal hole and are suitable for connection to respective pipe sections; sealing means arranged between the valve body and the ball and comprising an annular member which is coaxial with the longitudinal axis (X-X) and carries an axial seal housed inside an associated axial seat inside which it is partially inserted in order to interfere with the outer surface of the ball, comprising a coaxial ring axially constrained to the annular seal-carrying member and interfering in the transverse direction (Y-Y) with a front surface portion of the seal in order to retain the latter in the axial direction.

Abstract: The disclosed embodiments relate to a fuel line valve for an aircraft, that includes a shell capable of rotation inside the valve body and connected to a driving shaft driven by an electric actuator. The valve further includes a torque generation means and position detection means. The torque generation means are connected to the shell and generate a torque that varies based on the position of said shell in the valve body on the driving shaft. The position detection means provide electric signals characterizing the positions of said driving shaft. The disclosed embodiments also relate to a method for diagnosing the operation of such a valve in order to detect a failure during the operation thereof, and to a device for implementing said method.

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 tubular fluid flow device of varying outside dimensions adapted for use in a high pressure, rapidly cycling temperature environment, an isolation ball valve, a ball valve isolation method and a catalyst transfer method. The flow device 10 can have a tubular member 12 having at least one locus 14, 16 of non-uniform outside dimension and an axial flow passage 20 with a uniform inside diameter between opposite end connection elements. A thermal sleeve liner 22 can be disposed about the axial flow passage in a bore 24 formed in the tubular member, wherein the sleeve comprises an outer surface having a thermal barrier coating 26. A pressure-relief passage 28 is provided in fluid communication between the axial flow passage and an interface between an exterior surface of the thermal sleeve liner and an inner surface of the bore.

Abstract: A control ball valve includes a valve body (1), in the valve body (1) is formed a flow passage for fluid to flow through, the flow passage comprises an inlet end (2) and an outlet end (5), the inlet end (2) is a conic channel with a gradually reducing inlet port. The ball valve can reduce flow resistance of the fluid flowing into the chamber of the valve body, reduce pressure loss, and avoid generating large turbulence.

Abstract: A casing running tool comprising an integral elevation module and make-up/torque module. In accordance with one aspect or the invention, the tool is adapted to automatically engage a collared end of a tubular structure such as a casing string segment. The integral make-up/torque module is actuated by hydraulic control lines to exert compression force upon the outer diameter of a tubular, such as a casing string segment. This compression force is sufficient to enable torque to be applied to the tubular without slippage. In one embodiment, the make-up/torque module comprises an outer body carrying a plurality of hydraulically-actuable pistons, such that the tool is actuable from the rig floor to grasp the tubular with sufficient force that rotational force (torque) supplied via a drive motor in a top-drive rig. In accordance with another embodiment, the multifunction tool further includes an internal ball valve assembly for selectively allowing or restricting fluid flow through the tool.

Abstract: A ball valve assembly for controlling flow of a mixture. The ball valve assembly includes a body with a cavity therein and a ball positioned in the cavity with a passage therethrough, and a low-pressure valve seat and a high-pressure valve seat for locating the ball therebetween. The ball is movable between an open position, in which flow of the mixture through the passage is permitted, and a closed position, in which flow of the mixture through the ball is substantially prevented. The low-pressure valve seat includes one or more scallops formed to permit movement of at least a portion of the solid particles past the low-pressure valve seat when the ball is in the open position.

Abstract: A valve assembly uses an O ring contained within a void such that the outer edges of the valve assembly reach the outer mid section of the O ring. A kettle for brewing beer or heating other fluid is drilled so as to accommodate the disclosed valve. The O ring is pressed and held against the outside surface of the kettle wall. A retaining nut placed within the kettle further secures the valve to the kettle. As the surface of the kettle heats during use, the contained O ring retains sufficient contact with the valve and kettle so as to prevent leakage.

Abstract: An apparatus for delivery of fluids to a patient includes an inlet tube and an outlet tube connected to each other at an angular joint. A rotary valve and a piston are fitted to the angular joint forming a chamber. The rotary valve is provided with a priming channel notch and a pumping notch. For priming operation with the fluid delivery apparatus, a user sets the rotary valve to a priming position. During pumping operation, the rotary valve rotates in coordination with the piston to transfer a quantum of fluid from the inlet tube to the outlet tube via the chamber. A second piston is optionally provided on the outlet tube for smoothing out flow rate pulsations.

Abstract: The present invention provides a valve actuator for a valve that includes a cylindrical body that is thermally nonconductive and configured to engage a valve stem. A cylindrical adjuster is positioned coaxially with the body. A shaft extends through the adjuster and the adjuster is axially movable between a first position and a second position such that when the adjuster is in the first position a first engaging means engages a second engaging means thereby fixing the position of the adjuster relative to the body. When the adjuster is in the second position the adjuster is radially movable relative to the body. A spring is aligned with the shaft and configured to bias the adjuster toward the first position such that the first engaging means engages the second engaging means thereby fixing the position of the adjuster relative to the body.

Abstract: A valve assembly includes a valve body with an inlet, an outlet, and a chamber extending between the inlet and the outlet and an actuation sub-assembly. Positioned in the chamber is a flow restrictor, which is positionable between a valve open position wherein the fluid communication between the inlet and outlet is open and a valve closed position wherein the fluid communication between the inlet and the outlet is closed. The actuation sub-assembly includes a stem for engaging the flow restrictor. When the actuation sub-assembly is mounted to the valve body, the stem extends through the valve body wall for engagement with an engagement surface of the flow restrictor but is removable from engagement with the engagement surface of the flow restrictor without requiring disassembly of the valve body.

Abstract: An impedance seat (10) having an impedance element (19) that can be mounted in conjunction with a seat in a ball valve (52). The impedance seat has a concave surface (16) matching the curvature of the ball (76) and a plurality of flow paths (18) formed through it. An impedance assembly can have a plurality of stacked plates (34) that define the flow paths. The impedance seat can have a full flow window (104) having a radius that matches the profile of a flow bore (86) of the ball valve in an intermediate position. The impedance seat can be easily fabricated to provide improved impedance characteristics, and can be used in an original ball valve, or in a retrofit for an existing valve.

Abstract: A ball valve device for filling pressurized hoppers includes (a) a valve housing having a wall defining a chamber, a first port and a second port; (b) a valve ball rotatable within the chamber and including a through-bore for material flow from a refill container through the second port into the hopper, the valve ball having a horizontal, first hopper sealing position for pressure sealing the second port, and a vertical, second hopper opening position for opening the second port to the through-bore; and (c) a pressure release assembly including (i) a pressure release port formed through the valve housing wall and spaced from the first port and the second port; and (ii) a pressure release and particle catch assembly connected externally to the pressure release port for receiving pressure and remnant carrier particles from the refill container, thereby allowing safe release of pressure from the through-bore and from the refill container following refilling of the pressurized hopper.

Abstract: A ball valve includes a valve element and a single piece packing that seals the valve element within a valve cavity. The single piece packing is installed over the valve element at room temperature or may be molded thereon. The valve element may include a flow control element such as a ball and upper and lower trunnions. The various dimensions of the valve element and packing are selected to facilitate room temperature assembly and to substantially reduce the volume of packing material, thereby improving the performance of the valve over wider temperature ranges and pressure ratings.

Abstract: A valve having high and low pressure seals. The valve has a housing in which is mounted a valve closing member having a sealing surface which faces an opening in the housing. A low pressure seal surrounds the opening and is biased into contact with the sealing surface. A high pressure seal also surrounds the opening. Pressure in the valve pushes the closing member against the low pressure seal, which moves toward the opening until the closing member contacts the high pressure seal.

Abstract: The safety valve includes a first generally tubular body 12 and a second generally tubular body 14 each having flow paths therein when the bodies are mated. A ball 20 rotates between open and closed position in a first seat 30 and a ball centering member 32 provided for engaging the ball. An outer actuator sleeve 40 is rotatable with respect to the first and second bodies, and a connecting member 50 acts between the actuator sleeve and the ball to rotate the ball.

Abstract: A double check valve (10) with two separate elements (20, 25) individually movable to close the valve and collectively movable to open the valve. The separate elements are independently closing the valve, and collectively controllable to open the valve, to allow pressure release or to allow injection of fluid (e.g. lubricant). In an example, the double check valve includes two separate check valves with a stinger element (30) between them which is operable to internally sting the one check valve when (e.g. by action of) the other check valve is stung by a user (e.g. using a stinger means) thereby to open both check valves individually and the double check valve as a whole.

Abstract: The invention relates to a flow adjustment valve (1) comprising a valve housing (2) having a flow channel (3) in which a throttle unit (4, 11) having an adjustable throttle element (11) and a shut-off unit having a shut-off element (4) which blocks the flow channel (3) in a closed position are arranged, the shut-off element (4) being actuatable from the outside by means of a handle (16). The aim of the invention is to simplify the handling of a flow adjustment valve of the aforementioned type. For this purpose, the throttle element (11) can also be actuated by means of the handle (16).

Abstract: A valve includes a body, a throttling ball, and a shoe. The body includes an upstream flow passage and a downstream flow passage in fluid communication with an interior cavity of the body. The throttling ball is rotatable within the interior cavity on an axis to adjust the valve from a closed position to an open position and includes a fluid conduit extending through the throttling ball, where the fluid conduit is alignable with the upstream flow passage and the downstream flow passage. The shoe is disposed in the cavity abutting an interior surface of the cavity and includes a fluid passage there through having an inlet being alignable with the flow conduit of the throttling ball and an outlet being alignable with the downstream flow passage of the body. The interior surface of the shoe is disposed adjacent to and tracking an external surface of the throttling ball.

Abstract: A fluid isolation valve having a valve body with a first fluid flow port, a second fluid flow port and a fluid drain port with a valve in the fluid drain port. The valve body also defines a fluid flow channel, a drain flow channel and a valve portion, wherein the valve portion is disposed in the valve body to be communicated with the first fluid flow port, the second fluid flow port and the fluid drain port. A flow diversion device is also provided and is disposed within the valve portion. The flow diversion device is configurable between a first configuration and a second configuration, such that when the flow diversion device is in the first configuration the first fluid flow port is communicated with the second fluid flow port. Consequently, when the flow diversion device is in the second configuration the first fluid flow port is communicated with the fluid drain port. The fluid flow can be decrease or stop by use of the valve within the fluid drain port.

Abstract: A ball valve having improved sealing between the valve member and the valve body is presented. Improved sealing is realized by providing a sealing member that is allowed to float on the outer surface of the valve member in the closed position. By being able to float on the outer surface, the sealing member can compensate for any variations in the valve member as a result of machining tolerances or variations in position of the valve member due to changes in pressure within the valve, thereby providing dynamic sealing The dynamic sealing is also provided by configuring the valve member such that it causes the sealing member to be exposed to a higher biasing force in the closed position than in the open position.

Abstract: A plastic outlet valve for containers for liquids has a valve housing having an inlet socket and a union nut for securing the inlet socket on an outlet socket of a container. An anti-twist device in the form of an outer annular cam arrangement with locking cams is arranged on the inlet socket of the valve housing. The locking cams interlock with locking cams of an inner annular cam arrangement of the outlet socket of the container. As an alternative, an adapter ring with inner and outer locking cams is provided. The adapter ring is slipped onto the insertion end of the inlet socket of the valve housing. The inner locking cams engage matching external longitudinal grooves of the inlet socket of the valve housing, and the outer locking cams engage matching inner longitudinal grooves provided on the outlet socket of the container.

Abstract: The invention relates to oil and gas production and can be used for lifting a fluid from a well by using a gas power. The inventive flying valve for a free piston comprises a tubular body, a detachable element, which is insertable therein and is embodied in a form of a solid of rotation, and an arrester used for limiting the detachable element travel. The arrester is embodied in the form of a ring, the diameter of which is less than the internal diameter of the tubular body and is arranged coaxially therein. The thickness of the walls of the annular arrester gradually increases in the direction of the detachable element and the top and lower edges thereof are rounded. The arrester can be embodied in one piece with the tubular body and connected thereto by means of one or more connecting straps. Said arrester can be also embodied in the form of a separate part provided with at least two fixing projections.

Abstract: A ball valve assembly comprises a housing with ball valve rotatably disposed in a valve chamber in the flow passage. The ball valve is rotatable between open and closed positions by a valve stem that is connected to the ball valve at one end. The ball valve has an open ended slot in which the end of the stem is received. During assembly the stem may be inserted into the housing first and then the ball valve introduced into the housing with the slot facing the stem and then moved in the direction of the slot so that that the stem is received in the slot. The arrangement enables the conventional bonnet in a ball valve assembly to be eliminated and therefore provides for a compact design.

Abstract: A hose end lever controlled ball valve spigot incorporating a quarter turn lever actuated ball valve having a valve housing with a 90° inlet which protrudes 180° away from the valve actuating lever so that the lever handle of the valve is exposed in a vertical plane for easy access and operation. An outlet spout is secured to the valve housing at the valve outlet and extends at an approximate angle of 45° from the valve housing in the same direction as the actuating lever.

Abstract: A cap assembly is provided that includes a cap comprising an inner surface and an outer surface, a tip extending from the outer surface of the cap, wherein the tip includes an aperture therethrough operable to dispense the fluid stored within the dispenser. The cap assembly also includes a stem extending inward from the inner surface of the cap, wherein the stem is axially aligned and coupled in flow communication with the aperture of the tip. The stem includes a release valve assembly positioned along a length of the stem, wherein the release valve assembly facilitates creating a sealed surface therein and substantially prevents the liquid from passing out of the dispenser. The cap assembly further includes a stabilizing valve assembly extending from the inner surface of the cap to the outer surface of the cap.

Abstract: A ball valve and ball valve actuator including a unique valve stem seal and mounting connection between the ball valve and actuator. The stem seal design reduces leakage issues and significantly lengthens the life span of the ball valve and actuator and the mounting connection between the actuator. The ball valve maintains the centrality of the valve stem in connection with the actuator pinion and minimizes torque and shear forces transferred to the valve stem and hence the stem seal itself.

Abstract: An electrolysis-resistant coupling assembly for a valve within a fluid line. A line flange within the line includes a first mating surface and a fluid passageway therethrough. A valve flange downstream from the line flange includes a second mating surface. The valve flange has an aperture passing therethrough with first and second bores forming a lip. A valve coupler has an upstream end provided with a coupler flange having a third bore. A substantially non-compressible, non-metallic captive ring is interposed between the lip, and the flange and body of the valve coupler. Bolts and nuts assemble the valve flange to the line flange with a gasket therebetween, compressing the lip against the captive ring and the coupler flange. The valve is either sweat fitted or threadably attached to the downstream end of the valve coupler. Various configurations for the valve flange, the captive ring, and the valve coupler are disclosed.

Abstract: A crankcase for a locomotive air compressor including a body defining an interior space, a port in fluid communication with the interior space of the body, a valve receiving portion adjacent to and surrounding the port, and an oil drain valve engaged with the valve receiving portion and having a flow passageway in fluid communication with the port. The oil drain valve has an open position and a closed position, such that the oil drain valve in the open position allows oil to flow from the interior space of the body through the flow passageway, and the oil drain valve in the closed position prevents the flow of oil from the interior space of the body through the flow passageway. A method for installing a locomotive air compressor having the crankcase and oil drain valve is also disclosed.

Abstract: The present invention provides a flow control valve that requires only a relatively small opening/closing drive force, is compact and does not induce a pulsating flow in the valve open state. A valve seat (3) is disposed in a pipeline (5) through which a fluid flows. A spherical valve element (12) assuming a diameter smaller than the inner diameter of the pipeline (5) is housed inside the pipeline (5). A vibrating motor (8), which eccentrically rotates the valve element (12) kept in contact with the inner wall of the pipeline (5) is disposed outside the pipelines (5) and (6).

Abstract: A valve assembly includes a valve body with an inlet, an outlet, and a chamber extending between the inlet and the outlet and an actuation sub-assembly. Positioned in the chamber is a flow restrictor, which is positionable between a valve open position wherein the fluid communication between the inlet and outlet is open and a valve closed position wherein the fluid communication between the inlet and the outlet is closed. The actuation sub-assembly includes a stem for engaging the flow restrictor. When the actuation sub-assembly is mounted to the valve body, the stem extends through the valve body wall for engagement with an engagement surface of the flow restrictor but is removable from engagement with the engagement surface of the flow restrictor without requiring disassembly of the valve body.