Abstract: A shovel includes an upper swing structure, a cab mounted on the upper swing structure, and an operating lever provided in the cab. The operating lever includes a lever part to which a grip part is fixed, a holder part to which the lever part is connected, and a joint part connecting the lever part and the holder part. The lever part is configured to be attachable to and detachable from the holder part in a tool-free manner with a predetermined manual operation on the joint part.

Abstract: A tube clamp closes a flexible tube by applying a pinching force to walls of the flexible tube. The clamp includes a housing connected to a circular flange, the circular flange including a tubular wall surrounding a central bore and including at least one slot in the tubular wall sized to accept the flexible tube. A pinching element is positioned inside the central bore and is rotatable about a central axis of the circular flange. The pinching element includes a pinching projection that has a cross-sectional shape bound by a partial circle, and the partial circle has a radius substantially same as an inner radius of the tubular wall.

Abstract: A dustproof gate valve includes a housing having a first panel, a second panel, and a valve port on each of the first and second panels, a slide including a body and a valve member and drivable to move between a first position and a second position, the slide closing the valve port of the first panel when at the first position, a driver mounted in the housing, a swing arm having one end thereof connected to the driver for moving the slide, and a dust pipe mounted in said body. When the slide is at the second position, the dust pipe is disposed between the valve port of the first panel and the valve port of the second panel, and the pipe wall of the dust pipe separates the valve ports of the first and second panels from the accommodation space.

Abstract: A torque transfer arrangement for a butterfly valve includes a crank having a tubular portion with an outer radial surface and an inner radial surface defining a cylindrical bore about a first axis. The tubular portion has two openings connecting the outer surface with the inner surface. A shaft is sized and configured to fit within the cylindrical bore and aligned with the first axis. A hole formed therethrough is substantially perpendicular to the first axis. A tapered pin is sized and configured to snuggly engage within the two openings and the hole. A butterfly valve and method are also disclosed.

Abstract: According to one aspect, an apparatus for controlling a vane comprises an actuator, a vane control rod, a guide pin disposed on the vane control rod, a sleeve disposed about the vane control rod, and at least one sleeve track disposed along an extent of the sleeve. Further in accordance with this aspect, the guide pin couples the vane control rod and the sleeve, and the actuator linearly moves the vane control rod through the sleeve in order to manipulate a position of the vane.

Abstract: Actuators for fluid catalytic cracking unit slide valves and similar valves are disclosed. The actuator frame is assembled by bolting, allowing for standardized configurations that permit stocking of parts and avoids prior art problems of dealing with actuators designed for each individual project, allowing for rapid assembly of new actuators on demand that suit each project by varying the incorporated components, as well as permitting for more-rapid servicing when necessary. Additionally, the instrumentation for the actuator is contained within the actuator frame, better protecting the instrumentation from damage such as from being struck. The actuator includes a new manual engagement system, providing for better engagement of manual controls to actuate the actuator and the accompanying valve when necessary.

Abstract: A water stop switch device includes: a main body, a transmission element and a sealing element; the main body is disposed with a water passage, the sealing element is disposed in the water passage; one end of the sealing element is coupled to the transmission element in transmission way, the sealing element moves in the water passage to open the water passage; the other end of the sealing element and the main body surround to form a chamber; the side wall of the sealing element is disposed with a through hole connecting the water passage and the chamber; when the water passage is open, the chamber is full of water to reduce the pressure difference at two ends of the sealing element.

Abstract: Described herein is a system that includes an actuator with a movable input, a first summing mechanism with an input, a first output, and a second output. The input of the first summing mechanism is movably driven by the movable input of the actuator and the first output of the first summing mechanism is movably coupled to a first actuatable element. The system also includes an end mechanism with an input and a first output. The input of the end mechanism is movably driven by the second output and the first output of the end mechanism is movably coupled to a second actuatable element. The system further includes a sensor that senses a position of the rotational input of the actuator. A status of the first and second actuatable elements is based on a sensed position of the movable input of the actuator.

Abstract: Axially adjacent annular booster bleed aft and forward plenums with annular common wall therebetween extend radially outwardly from transition duct. Variable bleed valve includes bleed valve door in bleed inlet in transition duct, attached to rotatable valve body rotatable about axis of rotation, operable to open and close bleed inlet to aft plenum. Rotatable plenum door clocked or circumferentially spaced apart from variable bleed valve door and attached to rotatable valve body, operable to close and open up and control flow through an inter plenum aperture in common wall. Aft and forward bleed exhaust ducts extend from booster bleed aft and forward plenums to bypass flow path. One or more heat exchanger, such as from thermal management system, may be disposed in the bleed exhaust ducts. Heat exchangers may be used for cooling oil for power gear box and/or engine bearings, air conditioning, or variable frequency generator.

Abstract: A controlling mechanism for a three-way valve includes a transmission axis movably received in the valve and having first teeth formed on a free end thereof. A rotation axis is movable and intermittently rotatable in the valve and having second teeth integrally formed on the rotation axis to correspond to the first teeth. A spring is received inside the valve to provide a recoil force to the rotation axis to maintain the second teeth of the rotation axis to be in contact with the first teeth of the transmission axis so that movement of the transmission drives the rotation axis to move and rotate simultaneously for selectively blocking the inlet of the valve.

Abstract: An aircraft includes a plurality of seats and an input device coupled to each of the plurality of seats. The aircraft also includes a remotely controlled nozzle positioned proximate each seat of the plurality of seats. Each nozzle includes an actuator assembly including at least one actuator and an actuator shaft. The at least one actuator is configured to move the actuator shaft between an open position and a closed position to control an airflow through the nozzle in response to a signal received from a respective input device of the input devices, wherein the signal represents a position of the actuator shaft.

Abstract: A device for controlling the opening and the closure of a valve includes rotatable element configured to control the position of the rotary valve on the basis of its rotation in a direction or in the opposite direction; and a system that causes the rotation of the rotatable element and includes two antagonist feeder conduits that generate a linear motion. The rotatable element is shaped as a pulley and the system that causes the rotation further includes a wire anchored to the pulley and to the feeder conduits to cause the rotation in a direction or in the opposite direction of the pulley based on the application of a pre-determined traction on the wire obtained through the linear motion generated by the feeder conduits.

Abstract: The invention discloses a tilting disc check valve, which includes a left valve body (1), a right valve body (2), a large valve plate (3), a small valve plate (4) and a diaphragm control group (5), wherein the left valve body (1) and the right valve body (2) are butted into a whole through oblique openings; the oblique openings are inclined in a manner that upper parts are inclined towards the right valve body (2); the diaphragm control group (5) is arranged on the left valve body (1); the large valve plate (3) is arranged along the oblique openings; the large valve plate (3) is positioned in a valve cavity formed by the left valve body (1) and the right valve body (2); the large valve plate (3) is suspended on shaft holes of the left valve body (3) through valve shafts (6); the small valve plate (4) is connected with the diaphragm control group (5); and the small valve plate (4) is mounted at a slow closing valve port of the large valve plate (3) through a small valve plate pin shaft (7).

Abstract: An overflow pipe assembly of a bathtub includes an overflow pipe having a horizontal fitting end which has outer threads on outside thereof. A flange extends from the outside of the fitting end. A buffering ring is mounted to the fitting end and clamped between the flange and the wall of the bathtub. Two slots are defined axially in the passage of the fitting end. A locking ring is threadedly connected to the outer threads of the overflow pipe. A cap is mounted to the fitting end and has a peripheral wall which includes multiple drain holes. The cap has a tubular portion inserted into the passage. The tubular portion has a central hole which communicates with apertures defined through the wall of the tubular portion. The tubular portion has two protrusion which are engaged with the slots of the fitting end.

Abstract: A fluid control valve having a shape memory alloy spring for moving a valve member between an open position and a closed position is provided. The valve includes a valve assembly cylinder, a valve assembly cap fitted to the cylinder, a fluid inlet and a fluid outlet associated with the cylinder, a first member having a cam follower groove, a second member having a cam operatively associated with the groove, a fluid flow gate associated with one of the members as well as the inlet and the outlet, a return spring associated with one of the members, and the shape memory alloy spring associated with one of the members. The length of the shape memory alloy spring changes in response to changes in temperature. The first member is either a rotating valve or a reciprocating member. The second member is either a reciprocating ring or a rotating valve cylinder.

Abstract: Device and method are disclosed for transforming an angular movement changing linearly to a linear movement changing non-linearly with respect to the linear change of the angular movement. Embodiments of the device and method may be useful for on providing better and more accurate control of a user of the amount of fluid flowing from a faucet at the low flow rates. According to other embodiments a flow diversion plate is disclosed adapted to divert the flow entering the plate through one facet of the plate at a input location to an outlet opening diverted away from the input location by an angular diversion of between 90 to 180 degrees.

Abstract: A vacuum slide gate valve with a drive unit that is formed in such a way that a closure plate, by displacement of at least one valve rod along a longitudinal axis, is displaceable from an open position into an intermediate position, and, by displacement of said valve rod along a transverse axis running at right angles to the longitudinal axis, is displaceable from the intermediate position into a closing position. The valve rod is rigidly connected to a sliding part, which is guided between a first position and a second position parallel to the longitudinal axis, and between the second position and a third position parallel to the transverse axis. A displacement member is mechanically coupled to the sliding part via an inclined connection to displace the sliding part from the first position into the second position and from the second position into the third position.

Abstract: A system including a stem guide system, including a stem guide, and a sleeve coupled to the stem guide, wherein the sleeve is configured to rest within a valve stem groove of a valve stem.

Abstract: An adjustable trunnion valve includes an obturator, a valve stem, at least one valve seal, and a trunnion. The trunnion and obturator are configured to translate the obturator along a longitudinal axis extending through the trunnion and the obturator upon rotation of the valve stem beyond one or both of its open position and its closed position. A method of operating an adjustable trunnion valve having an obturator coupled to a trunnion and a valve stem includes passing a fluid through the adjustable trunnion valve and rotating the valve stem to rotate the obturator about an axis of rotation and to simultaneously translate the obturator in a direction along the axis of rotation while the obturator is supported by the trunnion and while the fluid flows through the adjustable trunnion valve.

Abstract: A system for extracting foreign matter in a gas turbine includes multiple variable bleed valve (VBV) doors disposed on the outer engine casing between a low pressure compressor and a high pressure compressor for bleeding a portion of flow from a core engine flow path into a bypass flow path. The system includes an outlet guide vane (OGV) assembly having multiple guide vanes disposed within the core flow path and multiple support struts positioned downstream from the multiple guide vanes. Each pairs of adjacent support struts comprises at least one VBV door therebetween and a section of the OGV assembly located at an upstream side of the fan hub frame before the each pairs of adjacent support struts. Each section of the OGV assembly includes a first side with one or more guide vanes with trimmed trailing edges configured for directing flow into the at least one VBV door.

Abstract: A rotary energy generating device includes an output shaft, a rotor coupled to the output shaft, and a plurality of paddles coupled to the rotor, with each paddle being moved between vertical and horizontal positions as the rotor is rotated. A chamber housing includes inlet and output pairs. A respective open chamber area is defined between each inlet and outlet pair based on a given rotation direction of the rotor, with each respective open chamber area configured to receive the paddles in the vertical position as the rotor rotates in the given rotation direction. A respective slotted chamber area is defined between each outlet and inlet pair based on the given rotation direction of the rotor, with each respective slotted chamber area configured to receive the paddles in the horizontal position as the rotor rotates in the given rotation direction.

Abstract: A rotary actuator (10) rotates a drive shaft (40), which in turn rotates a stem (76) between an actuator housing (32) and a central body (48). Drive pins (50, 52) extend between the central body of a rotary sleeve (42), and move within helical guide slots (80, 82) to linearly raise and lower the central body (48), which is connected to the linear controller (18).

Abstract: A large-scale hydraulic variable-speed floating box flap valve includes a hinge support, a valve seat, an upper valve leaf and a lower valve leaf, the valve seat and the hinge support are both fixed on a pump station base. The upper valve leaf is hinge-connected to the hinge support through a pin shaft, and the lower valve leaf is hinge-connected to the upper valve leaf. The upper valve leaf and the lower valve leaf may contact and match the valve seat in a sealed manner through a sealing structure. The upper valve leaf is connected to the lower valve leaf through at least one hydraulic mechanism. The hydraulic mechanism has one end hinge-connected to the upper valve leaf, and the other end hinge-connected to the lower valve leaf. The impact force between the valve leaves and the valve seat is damped by the hydraulic mechanism.

Abstract: A valve assembly having a valve-seal on a valve member that moves between an open and a closed position within a valve support housing for controlling fluid flow, particularly for use as a shut-off valve. In many embodiments, advancing the valve member sealingly engages the valve-seal with a valve seating area of the housing to close the valve and shut-off fluid flow through the housing, while retracting the valve member moves the valve-seal away from the seating area to allow fluid flow around the valve-seal and through the valve-seating area. In many embodiments, the valve member includes a proximal handle and angled ramp that engage with a helical ramp of the housing to translate rotation of the handle into axial movement of the member between open and closed positions.

Abstract: Apparatus for determining whether a valve is fully opened or closed. In one embodiment a valve position translator includes a cam tube and a rod. The cam tube has a cylindrical wall. A first slot in the wall is disposed along a radial arc of the tube. A second slot in the wall extends from an end of the first slot at an angle acute to the first slot. The rod extends through the wall, and rotates the cam tube while moving linearly along the cam tube in the second slot and while moving in an arc in the first slot.

Abstract: The invention provides a hard seal plug valve, comprising a valve body, wherein a tapered plug is arranged in the valve body, a bonnet is arranged at an upper part of the valve body, a drive valve rod penetrates the bonnet, an elastic hold-down mechanism is sheathed on the drive valve rod and arranged on a plug bearing seat, the plug bearing seat is connected with the tapered plug, and the plug bearing seat is held down when the elastic hold-down mechanism extends; and the hard seal plug valve characterized in that a telescopic mechanism is sheathed on the drive valve rod, the plug bearing seat is pushed upward when the telescopic mechanism extends, a valve rod bearing seat is arranged at the bottom of the drive valve rod, ends of the valve rod bearing seat pass through a planetary reduction mechanism, and the tapered plug is connected with the planetary reduction mechanism and rotates with the drive valve rod by the planetary reduction mechanism.

Abstract: Positive drive valve actuating mechanisms useable to operate a valve of a reciprocating compressor for oil and gas industry and related methods are provided. The valve actuating mechanism includes a driver configured to perform a rotating motion and a follower connected to a mobile part of the valve and to the driver. The follower is configured to transform the rotating motion of the driver into a reciprocating motion to open the valve and to close the valve, respectively.

Abstract: A vacuum valve having a valve rod (11) which has a longitudinal axis (20) and which carries at least one closing member (9, 10) for closing at least one valve orifice (2, 3) and which can be displaced by a longitudinal drive (18), in a longitudinal direction (21) lying parallel to the longitudinal axis (20) of the valve rod (11), from an initial position, in which the vacuum valve is open, into an intermediate position and can be displaced by a transverse drive (19) from the intermediate position to at least one end position in which the vacuum valve is closed. A transmission piece (23) which is guided displaceably in the longitudinal direction (21) by at least one guide part (24) is secured to the valve rod (11).

Abstract: Apparatus for determining whether a valve is fully opened or closed. In one embodiment a valve position translator includes a cam tube and a rod. The cam tube has a cylindrical wall. A first slot in the wall is disposed along a radial arc of the tube. A second slot in the wall extends from an end of the first slot at an angle acute to the first slot. The rod extends through the wall, and rotates the cam tube while moving linearly along the cam tube in the second slot and while moving in an arc in the first slot.

Abstract: A button water-stopping device has a button mechanism that can be glidingly connected to a main body, a shaking plate that can be asway set in the main body. The main body has a water channel that can penetrate the main body and a division board that is hermetically set in the water channel and has the first water hole that penetrates the division board. The button mechanism has a button and an elastic rod which is fixed under the button, and reaches into the water channel. The shaking plate has the second water hole that penetrates the shaking plate and a control groove which has two cooperative grooves. The elastic rod reaches into the control groove and can alternatively resist one of the two cooperative grooves to make the shaking plate swing left or right.

Abstract: A direct drive servovalve (10) includes redundant drive motors (14) coupled to a common valve drive shaft (22,24) by a connection device (26). The connection device (26) is configured to allow operation of the servovalve (10) in the case where one or more of the drive motors (14) becomes inoperable, such as caused by jamming or binding of a rotor associated with the drive motor. By use of the connection device (26), in the event that one of the drive motors (14) was to become jammed, the remaining operable motors (14) can continue to stroke or cause translation of a valve member (18) of the direct drive servovalve (10) to allow its continued operation.

Abstract: A Scotch yoke actuator is disclosed with a dual yoke and a diagonally symmetric design. A pair of shafts and pushing devices apply equal, opposing forces to the yoke, causing end loading forces applied to a rotatable shaft attached to the center of the yoke to be cancelled. In embodiments, the weight of the pushing devices is balanced about the yoke, each shaft extends in only one direction from the yoke, and/or the shafts are supported only by the yoke and the pushing devices. In embodiments that use yoke pins, the yoke pins include rollers or bearings to reduce friction, and/or two pair of yoke pin slots support protruding ends of the yoke pins. The yoke pin slots can extend to edges of a yoke housing face, allowing easy shaft removal and reinstallation, and each shaft can include a split end with extensions on opposing sides of the yoke.

Abstract: Quick connect fluid connectors are described that can be used to connect a first fluid system to a second fluid system for transferring fluids between the first and second fluid systems. The connectors include an eccentric mounted roller mechanism disposed within a slot in a main body and that is in continuous engagement with front and back walls of the slot. The eccentric mounted roller mechanism is used to actuate connection collets when the eccentric mounted roller mechanism is rotated. Since the eccentric mounted roller mechanism is in substantially continuous contact with the front and back walls, this ensures a smooth actuation of the main body and the connection collets without any lost motion.

Abstract: A water output switch structure of a faucet includes a water output head having a water inlet tube inside that includes a switch valve inside to change water output status of the water output head, a water output cover underneath the water output head, a control unit and a button disposed on the water output cover.

Abstract: The invention relates to A device for transforming a rotation of a gear into a translation of a slide, the device including a supporting member provided with a fixed tubular wall translatably connected to the slide by a cam channel, the gear being rotatably mounted on the supporting member and rotatably connected to the slide which is suitable for pivoting about an axis. The gear comprises a ring rotatably mounted on the tubular wall of the supporting member.

Abstract: Fluid control valves having adjustable valve stem and piston assembly are described herein. An example fluid control valve includes a piston to control a flow of fluid through a valve body, a bonnet with a threaded bore coupled to a bonnet yoke to be coupled to the valve body and a housing having a first portion to pivotally mount a roller assembly to move the piston and a second elongated portion with a threaded outer surface to couple to the threaded bore of the bonnet. A valve stem moves through the housing to control the movement of the piston.

Abstract: An actuator for a rotary function element, having a housing with at least one pressure means supply and being closed at both sides by a cover, in which housing a piston is guided to reciprocate in a sealing manner, the piston containing diametrically opposed, convolution-like connecting links for a transverse axis of an actuator shaft rotatably mounted in one cover, and having two guide rods firmly anchored in the housing only at one end and engaging into guides in the piston, with the one guide rod anchored in one cover, whereas the other guide rod is anchored in the other cover, and the two guides end blind in the piston in opposite directions.

Abstract: An actuation system for a bleed valve includes first and second bell cranks connected by a connecting link. The first bell crank has a first arm that is coupled to a bleed valve and a second arm that is coupled to the connecting link. The connecting link has a first end coupled to the second arm of the first bell crank and a second end coupled to a first arm of the second bell crank. A second arm of the second bell crank is coupled to an actuating element. Input is communicated through the actuating element to move the bleed valve between open and closed positions via the first and second bell cranks.

Abstract: A single stage vacuum breaker flow regulator includes a diaphragm retained in an elevated position in between atmosphere and an outlet chamber for a gaseous medium. A valve in communication with an inlet chamber is yieldingly urged to a closed position by a spring. Cam levers are movable by the diaphragm upon a reduction in pressure to sub-atmospheric in the outlet chamber. The movement of said cam levers in response to a reduction in pressure is transmitted to a yieldingly movable valve to open said valve to the flow of gas from said inlet chamber to said outlet chamber.

Abstract: A method of operating an on-off valve comprises closing one of two openings of a valve body with a seal member of a closure element within the valve body, the valve body being within an evacuation pipe connected between a process chamber and an evacuation apparatus; moving the closure element, using a linear driver, so that the seal member is moved away from the one of the two openings; and positioning the closure element into a retreat portion in an surface of the valve body, using the linear driver and a pivotal driver adapted to pivot the closure element between the one of the two openings and the retreat portion, so that the seal member is closed inside a protection seal member of the closure element to surround the seal member, thereby preventing the seal member from being directly exposed to the process gas.

Abstract: A rotational moving point of a connection between a rod and a valve swings between a full open point, at which the valve is fully opened, and a full close point, at which the valve is fully closed. An apex of this swing is set at a point, which is between the full close point and a half point and satisfies a relationship of ?P>?A where ?P denotes an angle that is defined between a first imaginary line, which connects between a bearing center of a rod bearing and the full open point, and a second imaginary line, which connects between the bearing center and the apex of the swing, and ?A denotes an angle that is defined between the first imaginary line and a third imaginary line, which connects between the bearing center and the full close point.

Abstract: A magnetic sensing surface of a stroke sensor is placed in an angular range between a first imaginary line and a second imaginary line. The first imaginary line is an imaginary line that coincides with a center line between first and second magnets of a magnetic movable body when a wastegate valve is placed to have a full close degree of the wastegate valve. The second imaginary line is an imaginary line that coincides with the center line between the first and second magnets when the wastegate valve is placed to have a half degree between the full close degree and a full open degree of the wastegate valve.

Abstract: A switching valve is proposed that switches between at least two different outlets with the aid of a valve closing body and a valve seat. The valve contains an actuating device that can be actuated by the user. The actuating device acts on an advancing device that advances the valve closing body from a stable, discrete position into another stable, discrete position. The advancement can be caused either by the interaction of beveled surfaces or by means of the flow of water.

Abstract: A gate valve for a vacuum chamber comprises two carriers (5a) each connected to a frame structure providing an essentially plane front by two parallel links (6) and to an actuating rod (12a) by parallel levers (14). Upward motion of the actuating rods (12a) by a piston (17) causes, via the levers (14), upward motion of the carriers (5a) which is transformed into a circular motion by the links (6) where the carriers (5a) at the same time approach the front while remaining parallel to it, moving sealing plates (9) which are fixed to the carriers (5a) to an active position where they press against the front and seal openings (3) therein. Retraction of the piston (17) effects an inverse motion, whereby the sealing plates (9) are completely removed from the openings (3) and the latter made easily accessible.

Abstract: A modular coatings sprayer includes a valve housing in which there is defined a nozzle orifice and a valve-shaft bore opposite the nozzle orifice. A housing side wall extends between the orifice and bore and defines an internal fluid passage. The side wall includes an opening through which pressurized fluid is introduced into the fluid passage. A valve including a valve shaft with opposed back and nozzle-closing ends is sealably supported within the bore such that (i) the nozzle-closing end is situated within the housing and the back end is situated external to the housing and (ii) the valve shaft can axially reciprocated between a first position in which the nozzle-closing end does not seal the nozzle orifice and a nozzle-closing position in which the nozzle-closing end seals the nozzle orifice such that pressurized fluid within the fluid passage is prevented from exiting through the nozzle orifice.

Abstract: Disclosed are valve actuator assemblies for high speed bottle filling machines. These actuators have a shaft that is pivotable on its longitudinal axis, a linkage fork connected to the shaft to pivot therewith, and a follower arm coupled by a magnetic coupling to the shaft. The magnetic coupling helps reduce carbon dioxide leakage. There may also be a second set of magnets which define pivoting dwell positions.

Abstract: Helical spline actuators can be employed to actuate ball valves. In certain embodiments, an actuator can include a remote operated vehicle shaft, an internally splined shaft, and an externally splined shaft that can be used in combination to actuate a ball valve. In certain embodiments, an actuator can include a piston that is displaced axially and not rotated, an externally splined shaft, and an internally splined shaft that can be used in combination to actuate a ball valve. In certain embodiments, an actuator can include a piston, a spring, a spring cap, and a joint member wherein the spring cap and joint member translate axial force from the spring to the piston. In certain embodiments, an actuator can include a bearing that insulates a piston from rotational forces exerted by an externally splined shaft.

Abstract: The disclosure provides a choke with an actuator that contains various components within an actuator housing to adjust the choke, and the housing is configured to be fixedly attached with a relatively large shearing connection on an actuator adapter to resist large overpressure surges within the housing and around the components. The actuator further includes a thrust bearing mounted adjacent a shoulder in the housing and supporting a worm gear, so that any overpressure loads are directed to the shoulder of the housing and retained within the housing while the housing is retained by the shearing connection to the remainder of the choke.

Abstract: A flush actuator assembly for use with a flush valve having a relief post is disclosed. The flush actuator assembly includes a valve actuator having a first end, a second end, and an aperture extending therebetween. The aperture is adapted to surround at least a portion of the relief valve post. Movement of the valve actuator in a first direction engages the relief valve post at a first location on the post and displaces the relief valve post by a first separation distance. Movement of the valve actuator in a second direction engages the relief valve post at a second location on the post and displaces the relief valve post by a second separation distance. The first separation distance and the second separation distance are different.

Abstract: Apparatus for determining whether a valve is fully opened or closed. In one embodiment a valve position translator includes a cam tube and a rod. The cam tube has a cylindrical wall. A first slot in the wall is disposed along a radial arc of the tube. A second slot in the wall extends from an end of the first slot at an angle acute to the first slot. The rod extends through the wall, and rotates the cam tube while moving linearly along the cam tube in the second slot and while moving in an arc in the first slot.