Abstract: An apparatus which is provided for closing a fluid valve in response to initial movement, as for example caused by a seismic disturbance, which is removably mountable to existing inline valves, such as gas valves. The apparatus includes a trigger which is responsive to seismic movement, particularly at a resonant frequency, to release a pressurized fluid supply which in turn drives a mechanical actuator to actuate the subject valve through the existing valve coupling. The existing valve coupling is typically a valve stem which must be rotated approximately ninety degrees from an open position to a closed position. The pneumatic drive is sufficiently powerful to actuate valves which are noticeably difficult to actuate manually. The force required to actuate the trigger mechanism is independent of the force required to actuate the valve, in accordance with the invention.

Abstract: The apparatus comprises a disk shaped shut-off flap located in the passage of a main body. The shut-off flap is mounted such to a rocking shaft that the flap can be lifted off its seat during one phase of movement of the rocking shaft and may be rotated into an open position during a further phase of movement of the rocking shaft. The operating means comprises a linear drive in the shape of a control rod including a control groove. A follower and driving means engages the control groove and the shut-off flap. Accordingly the shut-off flap is guided for above lift off and rotating movements. This linear drive allows an impeccable sealing between the inner space of the shut-off apparatus and the environment.

Abstract: A valve assembly for powdery granules comprises a valve housing having upper and lower walls formed with upper and lower openings, a valve member having a hollow cylindrical valve body rotatably supported within the valve housing, and a drive mechanism for turning the valve member through an angular range of about 90.degree. so as to hold the valve member upright in the vertical direction. The valve housing has, at the peripheral edge of its upper opening, a tapered surface which is enlarged downwards, and a circular groove is formed behind the tapered surface. Arranged in the circular groove is an elastic hollow seal ring, part of which is permitted to protrude into the interior of the valve housing through a circular slit formed in the tapered surface.

Abstract: An improved control valve (20) for selectively connecting one or more inlet ports with one or more outlet ports to establish fluid communication there between is provided. This control valve (20) includes a housing (26) having a wall which defines at least one inlet port and at least one outlet port. A moveable rotor (25) is positioned within a chamber (30) defined within the housing (26). This rotor (25) includes at least one groove (33) having a configuration such that fluid communication can be established between a selected inlet port and a selected outlet port upon movement of the rotor groove (33) into alignment with the ports between which fluid communication is desired. Means are provided for driving or moving the rotor to the desired positions for establishing fluid communication between selected ports.

Abstract: An improved remotely operable safety valve which is adapted for use between the swivel and the kelly is disclosed. An annular hydraulic piston moves the valve to the open and closed position whether or not the drill string is rotating, and in the event of hydraulic failure, the valve may be operated manually. Centering spring means are provided to reduce wear on the operable elements when the valve is in the open position.

Abstract: Spherical ball drive mechanism for directly coupling a rotary force motor to a valve member, includes a spherical bearing assembly at one end of the valve member. The spherical bearing assembly consists of an outer race member having a concave spherical inner bearing surface and a spherical bearing member having a convex spherical outer bearing surface complementary to the concave spherical inner bearing surface of the outer race member and received therein. The outer race member has a longitudinal axis substantially perpendicular to the longitudinal axis of the valve member and a transverse center axis radially offset from the longitudinal axis of the valve member. An eccentric output shaft of the rotary force motor extends substantially perpendicular to the longitudinal axis of the valve member for receipt in a longitudinal bore in the spherical bearing member.

Abstract: A multiple schedule valve including a valve seat and a valve member movable with respect thereto. A lever in the form of a bell crank is connected to the valve member and is movable on a pivot. A first actuator is connected to the lever to pivot the same to thereby move the valve member relative to the seat. A second actuator is connected to the pivot and is operable to shift the pivot axis thereof.

Abstract: An actuator for imparting a series of stepwise rotational movements to a valve shaft (2) or the like is provided. A bidirectional actuator, comprised of two opposing unidirectional actuators, includes a central drive wheel (6) secured to the shaft (2) and a pair of drive pistons (8, 10) axially reciprocable along the shaft (2). During reciprocation of the drive pistons (8, 10) protruding follower pins (30, 32) move within cam races (44, 46) disposed in the fixed housing (4). The cam races (44, 46) are so configured to allow the drive pistons (8, 10) to move into engagement with the drive wheel (6), before imparting a stepwise rotational movement thereto. During the return motion of the drive pistons (8, 10) the cam races (44, 46) are so configured to allow the pistons to disengage the drive wheel (6) before returning to their starting positions. A detent (54) for holding the drive wheel (6) and shaft (2) in any one of a preferred plurality of index positions is also disclosed.

Abstract: An apparatus for actuating a proportioning valve is presented. The valve consists of a pair of registers, each register having a cut-out portion defining a variable area orifice which is generally symmetrical about a central longitudinal axis through the orifice. The registers are respectively connected to a first and second drive shaft, the drive shafts being mounted about a common axis and being mounted in bearings in a frame such that by pivoting about the common axis, the drive shafts will urge the registers to simultaneously move in opposite directions. Each of the two drive shafts are provided with an arm which are pivotably connected to a tilting lever via a connecting rod. The two tilting levers are mounted on a pivot shaft which is parallel to the common axis of the two drive shafts. The tilting levers are also connected to a driving device, i.e., a hydraulic jack which acts to pivot them about their pivot shaft so that the registers are simultaneously actuated in opposite directions.

Abstract: A fluid pressure actuator (1) having two pistons (5,6) and a associated toothed rack portions (7,8) for activating an actuating member (10) via a toothed wheel (9) enables the piston positions to be adjusted, both in the full-strokes position of the actuating member (10) and in its zero-position. To this end, one end-wall (4) of the actuator has provided therein an adjusting screw (16) which engages the one piston (16). The piston, in turn, is provided with an adjusting screw (17) which engages the rack portion (7) of the opposing piston (5). This latter adjusting screw (17) can be reached through a plugged entry port (4d) in the end-wall (4).

Abstract: In a pressurized operated actuator (1) for stepwise regulation of valves between at least three distinct positions, one end-wall has been removed and replaced with an auxiliary actuator (19) having a piston (21) whose piston area exceeds the sum of the areas of the conventional pistons (5 and 6) of the firstmentioned actuator. The piston (21) of the auxiliary actuator has a piston rod (22) which extends into the cylinder chamber (2a) of the actuator. Its stroke equals half the length of the stroke of the rods (7 and 8) of two conventional pistons (5 and 6). The firstmentioned piston rod (22) limits the movement of the pistons (5 and 6) of the actuator in a direction away from one another. In this way, there can be obtained a distinct intermediate position for the rotary settings of the actuator.

Abstract: Butterfly valve actuated by a servo-motor, opening taking place by means of hydraulic force and closing by means of spring force. The hydraulic force must overcome the torque due to the flow, and the force of the closing spring. The excess hydraulic force of the servo-motor (2) during the end phase of the opening procedure is stored (3) and released during the closing procedure, whereby the closing time (t) can be minimized.

Abstract: A pushbutton control system for raising and lowering the dump body of a dump vehicle. Included are "up", "hold" and "down/float" switches which are connected in circuit with "up", "down" and "float" solenoid valves. These valves on energization direct pressurized air into the "up", "down" and "float" chambers of two air cylinders included in an actuating mechanism for a hoist valve controlling the telescopic hoist cylinders of the vehicle. The dump body is raised upon depression of the "up" switch with the consequent opening of the "up" valve. The depression of the "down/float" switch, resulting in the opening of the "down" valve, causes the dump body to lower by the forced contraction of the hoist cylinders. Upon subsequent release of the "down/float" switch the "float" valve opens to allow the dump body to lower under its own weight. The depression of the "hold" switch, with the consequent closure of all the solenoid valves, makes it possible to hold the dump body against movement in any desired position.

Abstract: An improved ball valve is disclosed, which is particularly adapted for use with pipelines of large diameter, possibly of the kind intended to convey toxic or dangerous fluids and for which a virtually perfect seal is required, said valve having a control mechanism which comprises sequentially acting linkages and preloaded resilient means in order that the valve shutter is always in an accurate central position as to its axis of rotation and the approach of the shutter to the seat takes place only once that the rotation of 90.degree. has been completed, in order that a uniform and intense pressural action of the shutter on the seat may be obtained. Alternative embodiments within the scope of the invention are shown and described.

Abstract: The invention is directed to a process for establishing a coupling with adjustable reduction ratio between a first driving rotation motion (r1) around a first fixed axis (10) and a receiving translation motion. The invention is also directed to a coupling device (1) that activates the receiving translation motion (f2) by mechanically coupling it with a second rotation motion (r2), called receiving motion, around a fixed axis (21) and establishing an adjustable mechanical correlation between the said driving (r1) and receiving (r2) rotation motions.The invention refers also to apparatus for the regulation of the amplitude of a parameter, and more particularly to valves (30) for the regulation of the flow rate of a fluid, whose nominal flow rate factor is steplessly adjustable, and which uses the abovedefined process and coupling device.

Abstract: A ball valve with cooperative cranks for rotating the ball valve in which the cranks run in arcuate waffle plates having intersecting lands and grooves and wherein the ball valve is spherical and retainer rings cooperate with the ball valve to hold the cranks in engagement with the waffle plate even when pumping through the valve and moving the ball valve away from an upper seat while retaining the ball valve actuator in the closed position.

Abstract: A ball type valve in which the ball is rotated by the cooperation of multiple tracks and multiple track followers.Also, a pressure operated permanent lock-out is disclosed. Pressure applied to a piston withdraws an expander from under a lock ring to release a lock-out sleeve. Continued application of pressure drives the sleeve to valve lock-open position where the sleeve is permanently locked to the housing.

Abstract: A fail-safe actuator of the type which permits cycling of a control member during normal operation without encumbrance from a return mechanism includes a link having a slot. A pin secured to a crankshaft coupled to the controlled member is slidably disposed within the slot. The slot permits rotation of the crankshaft within a range defined by the slot length. Upon system failure, a fluid pressure is moved to a predetermined position by a biasing spring to force the crankshaft to a fail-safe position.

Abstract: An actuator means is provided for a sleeve type of valve wherein a cable or flat band is caused to rotate one end of a sleeve valve with respect to a fixed second end. The relative rotation can be accomplished to operate the valve and can be provided by a simple linear operating type of pneumatic operator. One version of the disclosure provides an actuator that requires no return spring other than that which would normally be present in the pneumatic actuator itself.

Abstract: A high pressure gate valve apparatus provides an elongated cylindrical valve body providing a fluid conveying linear cylindrical longitudinal bore of substantially uniform configuration. A gate valving member is movable within the valve body entirely within the confines of the valve body and not projecting laterally therebeyond. The valve member is movable at generally right angles to and intersecting the fluid conveying bore with the gate valving member providing a flow opening therethrough, the valving member being movable within the valve body between open flow and closed flow positions. A pair of spaced generally parallel cylindrical drive chamber is provided on the valve body substantially parallel to the central flow conveying bore.

Abstract: A drill string safety valve operator provides a rotatable tubular body having a longitudinal through bore for conveying fluids. A valve member is movably disposed within the body for valving the fluid flow through the bore. A crank arm extends from and is coupled to the valve member at the valve stem for moving the valve member between open flow and closed flow positions responsive to rotation of the crank arm. A bearing is carried at the outboard end of the crank arm for transmitting load to the crank arm. An annular ring is supported about the tubular housing and provides a surface that can engage the bearing. Hydraulic cylinders power the annular ring so that the annular ring engages the bearing. Downward movement of the ring causes a corresponding downward movement of the bearing and a corresponding rotation of the crank arm. The apparatus thus allows quick remote closure of the valve during a blowout condition of the drill pipe bore.

Abstract: There is disclosed a gate valve which is moved to open position by an extendible and retractable, fluid-operated actuator, and which is moved to closed position, upon exhaust of operating fluid, by coil springs which urge follower parts reciprocable with a stem on the gate, and which extend from the valve body into a housing connected on the valve body, into engagement with cam surfaces on the housing. The cam surfaces are so arranged that the coil springs initially move the gate from open toward closed position with a relatively small force, and then move it into fully closed position with a force which is sufficiently larger to shear a wire line or other obstruction in the flowway of the valve body which would otherwise prevent closing of the gate.

Abstract: A system for controlling the charge air in a turbocharged vehicle diesel engine having a charge air cooler comprises a two-way valve which has a position in which it conducts charge air from the compressor to the charge air cooler and a position in which it conducts charge air past the cooler. The valve is controlled by the charge air pressure and has a delay function, so that all the charge air is conducted past the cooler during rapid acceleration (rapid pressure change) from low load, thereby achieving an increase in the engine combustion chamber temperature during the first portion of the fuel injection, so as to prevent increased noise emission. At slow pressure changes the valve adjusts itself in response to the charge pressure, so that all the charge air is conducted via the cooler at constant high load.

Abstract: A valve and particularly a safety valve for use in controlling flow from a well in which an external motor is utilized to shift the actuator of a valve such as a ball valve. The reciprocating rod of the motor is protected by resilient means between the crosshead attached to the motor and the reciprocating actuator. The actuator is latched when the valve is in the open position so that it cannot be moved to closed position except by movement of the reciprocating motor. The valve and seat assembly are designed to be replaced as a unit and can be fabricated as a subassembly with the valve in exact open alignment when the reciprocating actuator is in full valve open position as determined by a stop against which the valve member bottoms.

Abstract: A valve operator having a piston or diaphragm and connected polygonal piston rod which supplies reciprocable motion to a key or follower which acts within a spiraled slot formed in a coupling member attached to a valve gate to rotate the valve gate to a desired angular position. One embodiment includes means to bias the piston and the valve gate in a desired angular position from closed to open or therebetween.

Abstract: A hydraulic choking device for use in controlling fluid flow from an oil or gas well comprising choke body assembly and a choke actuator assembly having a choke actuator assembly with improved sealing means and choke plug construction, as well as a unique choke actuator drive means.

Abstract: A flexible disk damper which is capable of providing tight seals for a large diameter opening over a wide range of temperatures. Disks are made sufficiently flexible to compensate for inherent warpage in the damper seat by using a steel with a higher yield strength. Additionally, a varying cross-sectional thickness of the flexible disk is provided to ensure that unit stress is not exceeded along any point of the radius of the flexible disk for the deformation required to provide a tight seal. A pneumatic cylinder is utilized to provide a constant pressure to the flexible disks. A damper seat is fabricated from a cut plate or flat bar which is formed in an annulus. A deflection cone is utilized to deflect flue gases. The flexible disk is coupled together by bolts which are disposed in holes sufficiently large to allow independent movement of the disks to maximize deflection.

Abstract: The manifold cross-over control valve includes a powdered metal mounting base (10) which is mounted in a bore in a cross-over passage of an intake manifold (B). A frame (40) which extends into the cross-over passage from the mounting base seals against passage around its periphery and defines an exhaust gas aperture (42) therethrough. A pin (70) mechanically fastens the frame to the mounting base. A butterfly plate (80) is mounted on rotatable shaft (90) adjacent the frame for selectively opening and closing the exhaust gas aperture. The pin engages the butterfly plate in its fully open position to limit its rotational movement. A pneumatic actuator (D) is mounted by a bracket (30) to the mounting base for selectively rotating the shaft to control the passage of exhaust gases through the cross-over control valve.

Abstract: A self-contained spring biasing device, particularly useful for providing a movement-resisting force on the power shaft of a valve actuator, comprises spring cartridge means and safety means. The spring cartridge means has therein a compression spring and a bearing plate that is pushed by the power shaft to compress the spring and resist movement of the shaft. The safety means is accessible from the exterior of the spring cartridge means and removably secures the power shaft to the bearing plate, thus preventing the spring from launching the spring cartridge means from the actuator.

Abstract: An amplifying pneumatic switch which is responsive to low pressure signals includes a first chamber for receiving an input signal from a first pneumatic pressure source at a first pressure. The first chamber includes a wall formed by a movable, highly resilient diaphragm. A diaphragm plate is disposed generally coextensive with the diaphragm and is responsive to diaphragm movement. A nozzle is coupled to a second source of pneumatic pressure and is sealable for generating a pneumatic output signal at a second pressure. A sealing mechanism including a lever and a plunger coact between the diaphragm and the nozzle for sealing the nozzle in response to the input signal. A spring is provided for biasing the diaphragm plate to a quiescent position in the absence of an input signal.

Abstract: A valve stem actuator for a slurry valve or the like includes a support frame extending from the valve body to a linear operator having a cylinder and piston. Means are provided for connecting the piston rod to the valve stem and means reciprocally mounted on the support frame rotate the valve stem with respect to the valve body independently of the linear movement of the valve stem to dislodge accumulated crust to permit the valve disc to properly seat to prevent fluid flow through the valve. The linear operator is preferably pneumatically or hydraulically actuated and the rotary actuator preferably comprises an air or hydraulically actuated rack engageable with the valve stem. The valve stem actuator is useful for new valves or for retrofit of present slurry valves or the like.

Abstract: A discharge control for a storage tank for liquid, such as a gasoline transport tank, with the tank having an outlet port with the control comprising an emergency valve associated with the port, with such emergency valve normally being biased to a closed position, whereby discharge from the tank is prevented. Enclosed or protected valve operating means coacts with the emergency valve and is responsive to air pressure, for overcoming the normal valve closing bias of the emergency valve, wth the valve operating means including a crank comprising an operating lever with a crank case in which the lever is disposed, and with an air operated reciprocal motor unit secured to the crank case for coaction with the lever of the crank upon application of pressurized air to the motor unit, to cause the crank to move the emergency valve to open position. The valve operating means is able to be operated manually in the event of failure of the pressurized air supply.

Abstract: A kelly valving apparatus for controlling flow of fluid through a kelly and drill string comprises a rotatable tubular section having a fluid conveying bore adapted to be attached to the drill string at the kelly with a valve associated valve body valving the flow of fluids through the bore. A remotely operable operator is rotatable with the rotatable tubular section, operably engaging the valve for moving the valve between positions which open and close the bore, the operator including at least one hydraulic cylinder having an extensible ram actuated by hydraulic fluid, and linkage is connected to the valve and the hydraulic cylinder so that extension/contraction of the ram effects an opening or closure of the bore. A liquid interface fluid collector ring is positioned adjacent the rotatable tubular section for transmitting pressurized hydraulic fluid to the hydraulic cylinder, even during spinning of the cylinder with the tubular section.

Abstract: A dirty gas inlet arrangement for a filter housing including an inlet housing connecting an elongated outlet in a dirty gas supply manifold to the dirty gas chamber of the filter housing. The inlet housing is provided with a downwardly sloping bottom wall causing particulate materials separating from the dirty gases to flow into the dirty gas chamber, and a damper assembly for selectively closing off the elongated outlet in the manifold to prevent dirty gases from flowing into the dirty gas chamber. The damper assembly includes a shaft rotatably supported within the inlet housing, a lever arm cantilevered from the shaft, an elongated damper blade sized to underlie the marginal edge of the outlet pivotally secured to the free end of the lever arm, and an actuating assembly for selectively rotating the shaft to lift the blade into sealing engagement with the marginal edge of the outlet and to lower the blade into an inobtrusive position adjacent to the bottom wall.

Abstract: A surface controlled subsurface safety valve having a ball type valve closure. The ball member and its associated components are protected from damage by preventing excessive control fluid pressure from applying force to the ball member. Also, rotation of the ball member is prevented until any difference in pressure across the ball member and its seating surface has decreased below a preselected safe value.

Abstract: An operator for rotating blade dampers including a frame and a plurality of interconnected blades adapted for rotation within the frame, which operator comprises a pair of pivotally interconnected members operatively associated with the blades of the damper and the damper frame, and an actuator for causing articulation between the operator members, thereby rotating the damper blades between a fully open and a fully closed position. A variety of actuators may be used, including cable-type actuators as well as electrically and pneumatically operated actuators.The operator is configured so that the amount of rotation of the damper blades which is caused by a given amount of operation of the actuator increases as the damper blades move toward the open position, and so that an over-center position is defined wherein the operator members are substantially longitudinally aligned and in which the blades of the damper are locked in position.

Abstract: A fluid pressure valve actuator of the type utilized for controlling the operation of a ball-type valve is provided and includes a housing for supporting an actuating shaft for axial movement relative to the housing. A piston assembly is mounted within the housing and is responsive to fluid pressure for moving the shaft axially to an actuated position. A latch member is provided in the actuator for engagement with a shoulder portion on the actuating shaft to define an actuated position. In accordance with the present invention, the latch member is mounted for selective axial movement relative to the housing. This permits the axial position of the latch member to adjust the change in the actuating position of the shaft thereby compensating for wear in the internal components of the valve. In the preferred embodiment of the invention, a ratcheting element such as an adjustable collet lock is utilized as the means for supporting the latch member.

Abstract: A valve actuator mechanism for a lift-turn type valve having a valve element that is operated by first linear unseating movement, rotational repositioning movement and linear reseating movement. First and second actuator stems are supported by an actuator housing for both linear and rotational movement.

Abstract: A single control line, surface controlled subsurface safety valve for controlling flow in a well, having a valve closure member responsive to the longitudinal movement of an operator tube disposed in the bore of the safety valve. The operator tube is moved to a position opening the valve closure member by action of a piston, housed in an annular pressure zone, which is responsive to control fluid pressure from the surface of the well. The operator tube is returned to a position closing the valve closure member by action of a resilient urging means housed in an annular chamber located above the annular pressure zone. There is no pressure differential between the bore of the safety valve and the annular chamber housing the resilient urging means.

Abstract: A valve and particularly a safety valve for use in controlling flow from a well in which an external motor is utilized to shift the actuator of a valve such as a ball valve. The reciprocating rod of the motor is protected by resilient means between the crosshead attached to the motor and the reciprocating actuator. The actuator is latched when the valve is in the open position so that it cannot be moved to closed position except by movement of the reciprocating motor. The valve and seat assembly are designed to be replaced as a unit and can be fabricated as a subassembly with the valve in exact open alignment when the reciprocating actuator is in full valve open position as determined by a stop against which the valve member bottoms.

Abstract: A remotely operated valve, typically for use as a downhole safety valve, adapted to be connected in-line between two pieces of well pipe or other fluid-conducting members, the valve being rack-and-pinion operated and characterized by including a combined piston and rack member with the piston concentric with a through bore of the valve and with the rack eccentric with respect to the through bore, the eccentric disposition of the rack and associated support members making it possible to achieve a dependably operable valve of minimum transverse dimensions without increased complexity or cost of manufacture.

Abstract: A valve is provided for use in a subterranean well. Rotary manipulation of a fluid transmission conduit results in rotation of a ball valve to selectively open and close the fluid conduit. Rotary manipulation of the fluid conduit is imparted to the ball valve by means of a lever assembly which transfers sufficient force for activation of the valve permitting the valve to be used in the presence of significant pressure differentials. Seals are provided on opposite sides of the ball valve to prevent communication of either fluid or pressure from either above or below the ball valve.

Abstract: A high torque reversible stepping actuator for valves can drive in small increments in response to fluid pressue pulses. The stepping actuator has oppositely facing ratchet wheels on a common shaft linked to the stepping actuator output. A pair of operator means can drive the ratchet wheels in opposite directions. Each operator means comprises a fluid pressure actuator connected to a drive pawl for driving one of the ratchet wheels in one direction. A pair of locking pawls normally engage the ratchet wheels preventing rotation in either direction. The fluid pressure actuator disengages one of the locking pawls sequentially before engaging the drive pawl with the ratchet wheel, thereby permitting advance of the ratchet wheel. The other locking pawl remains engaged and prevents back drive of the ratchet wheels and stepping actuator due to elastic deformation of the drive train connecting the ratchet wheel with the valve or other mechanism being driven.

Abstract: A method for adjustment and/or indication of a liquid or gaseous pressure, and advice for utilization of the method, including the use of a piston member (7, 7'), movably arranged in a surrounding housing (1), said member having two towards each other acting piston areas with different area, said piston areas being made subject to a pressure from the liquid or gaseous medium, a mechanical load also being supplied to the smaller piston area, whereby the piston surfaces only perform a common movement when the media pressure exceeds a predetermined limiting value, which limiting value comprises of resulting force for the force developed by the smaller piston area under influence of supplied media pressure and added mechanical force, said movement, when predetermined limiting value is exceeded, being arranged to influence a flow restricting valve member and/or indicate the pressure of supplied media.

Abstract: A high pressure gate valve apparatus provides an elongated cylindrical valve body providing a fluid conveying linear cylindrical longitudinal bore of substantially uniform configuration. A gate valving member is movable within the valve body entirely within the confines of the valve body and not projecting laterally therebeyond. The valve member is movable at generally right angles to and intersecting the fluid conveying bore with the gate valving member providing a flow opening therethrough, the valving member being movable within the valve body between open flow and closed flow positions. A pair of spaced generally parallel cylindrical drive chamber is provided on the valve body substantially parallel to the central flow conveying bore.

Abstract: A valve and particularly a safety valve for use in controlling flow from a well in which an external motor is utilized to shift the actuator of a valve such as a ball valve. The reciprocating rod of the motor is protected by resilient means between the crosshead attached to the motor and the reciprocating actuator. The actuator is latched when the valve is in the open position so that it cannot be moved to closed position except by movement of the reciprocating motor. The valve and seat assembly are designed to be replaced as a unit and can be fabricated as a subassembly with the valve in exact open alignment when the reciprocating actuator is in full valve open position as determined by a stop against which the valve member bottoms.

Abstract: The valve passes incoming pressurized fluid through a pair of orifices arranged in opposite side walls of a hollow tubular plug to form two fluid jets which impinge upon one another in the plug interior prior to exiting. The orifices are elongated and selectively covered by an adjustable sleeve which is positioned by manipulation of a valve stem extending outwardly of the valve housing. Further pairs of orifices are angularly arranged with respect to the first pair and the sleeve includes parts which cover the other orifices when a first pair are operative. The valve stem is selectively rotatable to position the sleeve to expose another pair of orifices to the pressurized fluid.

Abstract: A fail-safe valve (10) for precluding contamination of fluid, such as milk, having passed through a main fluid flow line (12) from an input end, such as a milking claw, to a collection and storage tank is the subject of this application. A flushing conduit (46) through which flushing water or a sanitizing agent flows intersects the main fluid flow line (12).A pinching element (54) is provided with a first arm (56) for pinching closed the main line (12) at a resilient portion thereof down-flow from the intersection (48) of the conduit (46) with the main line (12). The element (54) also includes a second arm (58) which is angularly spaced from the first arm (56). The pinching element (54) is mounted for pivoting about an axis so that, when the element (54) is in its first position, the main line (12) will be pinched closed. With the element (54) in this first position, the flushing conduit (46) will not be occluded.

Abstract: A lubricator valve apparatus adapted for use when running wireline tools into an offshore well during a production test of the well. The valve includes a valve body having a central flow passage and a ball valve element for opening and closing the passage, hydraulically operable means responsive to surface-controlled pressure for opening and closing the ball valve, latch means for releasably holding the ball valve in both the open and the closed positions, and bypass valve means for equalizing pressures across the ball valve prior to opening thereof and arranged in response to pressure applied at the surface to the production pipe to be opened to provide a flow path for well control fluids.

Abstract: A poppet valve and method of assembling same are provided wherein such valve has an angled fluid flow passage extending through its valve body and has an improved closure for such passage comprising an annular sealing structure fixed to the valve body in sealed relation adjacent the discharge end of the flow passage with the sealing structure having an annular sealing edge at its inner end which is disposed in a plane perpendicular to an axis through such discharge end and a self-centering assembly comprising a disc having a yieldable planar portion which is adapted to engage the sealing edge of the sealing structure and provide a fluid-tight seal.