Abstract: An isolation valve assembly including a valve body having an inlet and an outlet. The isolation valve includes a seal plate disposed within an interior cavity of the valve body. The seal plate is movable between a first position allowing gas flow from the inlet to the outlet, and a second position preventing gas flow from the inlet to the outlet. The isolation valve includes a closure element disposed within the valve body. The closure element is configured to retain the seal plate stationary in the first position or the second position. The closure element includes a first sealing element positioned adjacent to a first surface of the seal plate. A working surface of the first sealing element is substantially obscured from the gas flow when the seal plate is stationary.

Abstract: A fluid compressor system having a pneumatic inlet/blowdown valve assembly that utilizes pneumatic pressure and vacuum available in the fluid compressor system for the actuation of an inlet valve and a blowdown valve. The actuation of the inlet valve and the blowdown valve is synchronized via a piston-cylinder actuator having a first piston and a second piston axially connected. The pneumatic blowdown/inlet valve assembly uses a first stage vacuum pressure to actuate the first piston and the second piston from an idle state where the inlet valve is closed to stop a flow of working fluid into the fluid compressor system and the blowdown valve is open to depressurize the fluid compressor system to an actuated state where the inlet valve is open to allow the flow of working fluid into a first airend and the blowdown valve is closed to allow a pressure buildup in the fluid compressor system.

Abstract: A device for measuring the characteristics of an air flow in an annular passage of a turbo-machine. The device includes a rod which extends along a first axis and carries means for measuring air flow characteristics. The rod also sealingly engages and slides in a first tubular part extended by a second tubular part. The second tubular part sealingly passes along the first axis through a slider mounted in a slide for sliding along a second axis perpendicular to the first axis. The rod engages the second tubular part with an annular clearance.

Abstract: A hydraulic fracturing tree wing is formed with a studded hydraulic valve next to a manual valve. The stud-to-flange connection allows for a shorter, lighter wing. The studded hydraulic valve maybe a gate valve that includes a T-slot coupling between an operating stem and the gate. A bonnet seal ridge may be formed to withstand undue deformation during operation that wears or destroys seals. A method for forming a hydraulic fracturing tree assembly includes using a flanged manual valve with a studded hydraulic valve. Other valves and methods are presented.

Abstract: Disclosed is a wafer processing system, a dual gate system, and methods for operating these systems. The dual gate system may have a shaft, a first gate and a second gate coupled to the shaft at opposite sides thereof, and an actuator coupled to the shaft. The actuator is configured to tilt together the shaft, the first gate, and the second gate to a first sealed gate position or to a second sealed gate position. The actuator can be operated using a pneumatic mechanism, an electro-magnetic mechanism, or a cam follower mechanism.

Abstract: A ring base member of a disc seat ring is fixed to a valve disc using a bolt. The valve disc is formed of a first austenitic stainless steel containing 17.0% by mass to 21.0% by mass of Cr and 8.0% by mass to 13.0% by mass of Ni. The ring base member is formed of a second austenitic stainless steel containing 17.0% by mass to 20.0% by mass of Cr and 8.0% by mass to 15.0% by mass of Ni.

Abstract: A pressure relief valve includes a valve body including a monitored pressure inlet leading to a monitored pressure region, a piston having a shear seal bore and a surface facing the monitored pressure region, a vent passage and a the shear seal assembly comprising a seal plate having a sealing surface thereon, and the shear seal assembly includes a sealing surface facing the seal plate and having a first annular area, and a first surface having an annular surface area at least twice as large as the first area of the sealing surface, the first surface facing away from the first area, and a biasing seal in contact with the first surface.

Abstract: A valve for use in oil and gas production or similar applications includes a plug or other flow barrier disposed in a cavity of a hollow valve body with a metal-to-metal sealing surface that is not reliant on any rubberized or elastomeric material to effect a seal.

Abstract: A hydraulic control system for blowout preventers systems, frack valves and chokes, and related wellhead and control equipment used in oil and gas well drilling operations. The hydraulic control system can include one or more hydraulic control valves or pressure regulators including an internal, linear slider and pairs of seal rings. Lapped and polished surfaces of the seal rings and sliders can form a dynamic metal-to-metal seal within the hydraulic control valves or pressure regulators.

Abstract: A valve insert for a valve assembly, the valve insert positionable within a valve inlet end and/or a valve outlet end and including a fluid passageway to permit fluid flow through the valve assembly. The valve insert is formed having an outer surface for supporting the valve insert within the bore and an inner surface defining a fluid passageway, the inner and outer surfaces extending longitudinally between a proximal face configured to engage a valve seat, and an opposed outer face. The valve insert further includes a recessed portion formed on the outer surface, the recessed portion being configured to receive a seal to sealingly engage the bore.

Abstract: The invention relates to a hydraulic proof test assembly comprising at least a valve (1) with parallel seats (102). It comprises: a shut-off member (2) with parallel plates (20, 21), connected by connecting means for regulating their separation, to make them go from a first position in which this separation is sufficient to enable the shut-off member (2) to be introduced into said valve (1) to a second position where said separation is greater, this separation making it possible to apply them firmly against said parallel seats (102); a device (3) for inserting said shut-off member (2) into said valve (1) which comprises at least a “U” shaped tool, configured to be introduced into said valve (1), its parallel arms forming guides, while its base forms a support for retaining said shut-off member (2); a “dummy stem” (4).

Abstract: In embodiments, a gate valve includes a valve body including a flow passage from a first opening to a second opening, and a gate channel having a first end intersecting the flow passage and a second end delineated by a third opening. A valve cover fits over the third opening. A cap fits over a valve cover opening. In embodiments, a valve cover includes a body with a second sealing surface protruding from a first sealing surface, both around an opening of the body. A cap has a third sealing surface to mate with the first sealing surface, and a fourth sealing surface congruent to the second sealing surface. In embodiments, a valve cover cap includes a body with a first sealing surface on an end of a wall. Pin flanges each have a pin hole having a pin hole axis oriented perpendicular to a center axis of the wall.

Abstract: A valve for use in oil and gas production or similar applications includes a plug or other flow barrier disposed in a cavity of a hollow valve body with a metal-to-metal sealing surface that is not reliant on any rubberized or elastomeric material to effect a seal.

Abstract: An example fitting includes: a fitting body having counterbore, where the counterbore defines an annular shoulder within tire fitting body: a spring having a first end interfacing with the annular shoulder of the counterbore; and a seal carrier having: (i) a first end face interfacing with a second end of the spring, (ii) a second end face configured to interface with an internal surface of a port, such that the spring is configured to apply a biasing force on the seal carrier toward the internal surface of the port, (iii) a first annular groove on an exterior peripheral surface of the seal carrier, where the first annular groove is configured to have a radial seal disposed therein, and (iv) a second annular groove in the second end face, where the second annular groove is configured to have a face seal disposed therein.

Abstract: In embodiments, a gate valve includes a body including a flow passage from a first opening to a second opening, and a gate channel from the flow passage to a third opening, the gate channel having a central longitudinal axis and a ridge defining a perimeter of the opening. A valve cover can fit over the third opening and exert a clamping force on the ridge, the clamping force having a first force component perpendicular to the central longitudinal axis and a second force component parallel with the central longitudinal axis. In embodiments, a valve cover includes a first mating surface configured to extend over an opening of the gate valve, a first clamping section extending at a first non-parallel angle from a first side of the first mating surface, and a second clamping section extending at a second non-parallel angle from a second side of the first mating surface.

Abstract: A hydraulic fracturing tree wing is formed with a studded hydraulic valve next to a manual valve. The stud-to-flange connection allows for a shorter, lighter wing. The studded hydraulic valve may be a gate valve that includes a T-slot coupling between an operating stem and the gate. A bonnet seal ridge may be formed to withstand undue deformation during operation that wears or destroys seals. A method for forming a hydraulic fracturing tree assembly includes using a flanged manual valve with a studded hydraulic valve. Other valves and methods are presented.

Abstract: A gate valve includes a valve body including a gate channel intersecting a flow passage that extends from a first opening to a second opening. In embodiments, the gate channel has a width constant across a length extending from an intersection of the flow passage and the gate channel away from the flow passage. In embodiments, the flow passage is defined by a perimeter surface, a semi-annular slot through the perimeter surface, and a center axis through a center of the first opening and the second opening, the semi-annular slot extending on both sides of a first plane, the first plane perpendicular to a center longitudinal axis of the gate channel, the first plane parallel to and intersecting the center axis of the flow passage. In embodiments, the flow passage has an outer diameter, and a span of the gate channel containing the diameter is greater than the outer diameter.

Abstract: A gate valve controls fluid communication from an inlet to an outlet relative to a reference pressure. A body defines a passage disposed in communication with the inlet, and an outlet port disposed in the passage communicates the passage with the outlet. A piston disposed in the passage is movable therein between first and second positions relative to the outlet port. The piston is movable in a first direction from the first position to the second position in response to an inlet pressure at the inlet. A gate disposed on the piston is biased transversely toward the outlet port. The gate moved by the piston adjusts flow from the passage to the outlet port. A pressure compensator disposed opposite the piston biases the piston in a second opposite direction from the second position to the first position. The pressure compensator has a chamber in communication with the reference pressure.

Abstract: A gate valve includes a valve body including a flow passage from a first opening to a second opening, and a gate channel having a first end intersecting the flow passage and a second end delineated by a third opening. A valve cover fits over the third opening. A cap fits over a valve cover opening. In embodiments, a valve cover includes a body with a second sealing surface protruding from a first sealing surface, both around an opening of the body. A cap has a third sealing surface to mate with the first sealing surface, and a fourth sealing surface congruent to the second sealing surface. In embodiments, a valve cover cap includes a body with a first sealing surface on an end of a wall. Pin flanges each have a pin hole having a pin hole axis oriented perpendicular to a center axis of the wall.

Abstract: A system for converting operation of a valve between an unbalanced operation mode and a balanced operation mode includes a housing adapted to couple to a valve body. The system also includes a lower stem, including lugs, the lugs having a lug diameter that is larger than an adjacent lower stem diameter. The system further includes a valve member nut coupled to a valve member, the valve member nut having an opening to receive the lower stem, and pins extending into the opening, the pins forming a reduced diameter portion of the opening. In the system, the lower stem couples to the valve member, via the valve member nut, when the lugs are axially aligned with the reduced diameter portion and the lower stem decouples from the valve member when the lugs are axially misaligned with the reduced diameter portion.

Abstract: A gate valve includes a valve box; a linear channel formed inside the valve box; a valve disc displaceable in an axis direction perpendicular to the channel and that can obstruct the channel by the external surface thereof abutting the inner wall of the channel; a valve rod that extends from the base end of the valve disc; and a valve chamber that accommodates the valve disc. The external surface of the portion of the valve disc protruding into the channel while in an open position is configured to be a streamline curved face.

Abstract: A double action directional fluid flow valve includes a stepped piston connected with a poppet valve and moveable by a controller between open and closed positions by applying a continuous pressure to a small diameter piston face and selectively applying and removing pressure from a large diameter piston face to move the poppet valve between an open position and a closed position.

Abstract: A new design for a gate valve comprises a rotating shaft with a head that can be mated to a drill bit, allowing the valve to be operated by use of a powered rotary tool such as an impact drill rather than the more difficult, traditional manual wheel or wrench. The shaft rotates freely while remaining mated to the gate valve, which in turn moves up or down to open or close the valve.

Abstract: A flow diversion valve comprising: a valve body including an upper housing releasably connected to a lower housing, the upper housing and lower housing being configured to receive a rotating rod therethrough; a shuttle positioned within the valve body, the shuttle being configured to move to cover one or more spill ports of the valve body; and a releasable locking member, wherein the releasable locking member is releasably connected to the valve body and positioned between the upper housing and the lower housing to assist in preventing relative movement therebetween.

Abstract: Venturi devices are disclosed herein that include a body defining a Venturi gap between an outlet end of a converging motive section and an inlet end of a diverging discharge section, having a suction port in fluid communication with the Venturi gap, a gate valve linearly translatable to open and close the Venturi gap, and an actuator connected to the gate valve to operatively move the gate valve between an open position and a closed position. The gate valve, in a longitudinal cross-section, is generally U-shaped, thereby having continuous, opposing sides that one each close the motive outlet and the discharge inlet and defining a void between the opposing sides that is in fluid communication with the suction port. The converging motive section defines a circular-shaped motive inlet and defines an elliptical- or polygonal-shaped motive outlet, and the diverging discharge section defines an elliptical- or polygonal-shaped discharge inlet.

Abstract: Pipeline apparatus comprises a housing including a riser and a pipeline connector and a seal pack assembly mounted in a member that is mounted in the riser, the apparatus including a shaft extending through the seal pack assembly. The seal pack assembly includes at least one seal situated and configured to provide a seal between the outer surface of the shaft and a component of the seal pack assembly through which the shaft extends, that component being releasably attached to the member.

Abstract: An annular valve seat for a high pressure gate valve. The valve seat is configured to be received in a seat pocket and includes a gate end facing a gate and a body end. The width of the valve seat gradually narrows from the gate end to the body end. The gradually narrowing width of the valve seat improves the seal and reduces debris intrusion between the valve seat and the seat pocket.

Abstract: A cone type control valve comprising a cone shaped valve plug movably retained in an similarly shaped opening of a valve housing having horizontal inlet and outlet ports and wherein any reciprocal movements of the conical plug can control fluid flow from the inlet to the outlet port. The cone shaped opening furthermore has cavities located perpendicular to the ports, capable to accelerate and de-celerate fluid passing between the two ports.

Abstract: A torque reducer assembly including a ball screw assembly and a plunger gear assembly with a low torque allowing a single user to operate a hand wheel to open or close a valve under very high pressure without need of gear reduction and a balance stem. A gear shaft, ball screw, valve stem and gate are fixed from rotation with respect to each other but move axially together in response to rotation of a ball screw nut in the ball screw assembly. The plunger gear assembly rotates with the ball screw nut. In the engaged position, a plunger prevents rotation of the ball screw nut in the valve open direction but permits rotation of the ball screw nut in the valve close direction. In the disengaged position, the plunger permits rotation of the ball screw nut in the valve open direction and the valve close direction.

Abstract: Fluid valve actuator apparatus having internal tubing and anti-rotation features are disclosed. An example actuator apparatus includes a diaphragm plate defining a first pressure chamber and a second pressure chamber opposite the first pressure chamber, a first internal fluid passageway in fluid communication with atmosphere, and a second internal fluid passageway to receive a control fluid from a controller. The example apparatus also includes a tube fluidly coupling the first or second internal fluid passageway to the first pressure chamber via an opening in the diaphragm plate, where a first center axis of the tube is offset from a second center axis of the diaphragm plate, and where the tube passing through the diaphragm plate is to prevent the diaphragm plate from rotating.

Abstract: A vacuum valve includes a valve housing with a valve opening, a closure member, a valve rod on which the closure member is mounted and which is axially adjustable for adjusting the closure member between open and closed positions, an elastic seal arranged on a front side of the closure member or on the valve seat of the housing, a sealing surface arranged on the other of these, and against which the seal abuts in the closed position, and at least one support part arranged on a rear side of the closure member remote from the valve seat. The abutment between the support surface of the support part and the valve housing is effected in an abutment plane which is inclined in relation to the displacement direction about an axis which is at right angles to both the displacement direction and the longitudinal axis. The support part is pivotable in relation to the closure member about a pivot axis, which is at right angles to both the displacement direction and the longitudinal axis of the valve opening.

Abstract: A slide valve apparatus for automatic application of surface pressure is configured to include a connection switching device (20) for switching a connection position of a drive device (7) and a slide case (4) between a first connection position (discharge position) during molten metal discharge and a second connection position (surface pressure operation position) during surface pressure application/release. As a result, the drive stroke of the drive device can be greatly reduced and the already installed drive device can be used as is when a SV apparatus is upgraded.

Abstract: A packing gland for a valve wherein the packing gland includes a top portion for receiving a gate. The packing gland includes first and second longitudinal sections of packing material for sealing the gate. In addition, the packing gland includes first and second stuffer elements located adjacent the first and second longitudinal portions. The packing gland also includes a plurality of clamp elements located adjacent the first and second stuffer elements, wherein the clamp elements provide pressure on selected portions of the first and second stuffer elements to compress corresponding selected portions of the first and second longitudinal sections of packing material.

Abstract: Provided is a fluid filtration assembly including a housing configured with one or more filter units extending in fluid flow between a raw fluid inlet port and a filtered fluid outlet port, a filter rinsing assembly being in fluid communication with a rinsing fluid inlet port, and propulsion fluid inlet port being in flow communication with a propulsion mechanism for propelling one or both of the filter rinsing assembly and the filter unit with respect to one another. Further provided is a thread tensioning mechanism for controlling tension of coiled threads of a thread-type filtering cartridge.

Abstract: A gate valve has a body, the body having a cavity and a flow passage intersecting the cavity. A seat fabricated from a ceramic and/or hardfacing alloy matrix composite substrate is mounted to the body at the intersection of the flow passage and the cavity. A gate fabricated from a ceramic and/or hardfacing alloy matrix composite substrate is installed at the cavity and has an engaging face that slidingly engages the seat while the gate is being moved between open and closed positions. The engaging faces of the gate and seats are coated with a low-friction material to facilitate sliding. The ceramic and/or hardfacing alloy matrix composite substrate construction of the gate and seats with low friction engaging surfaces enhances the gate valve's bearing stress capacity.

Abstract: A gate valve sleeve including a reinforced elastomeric valve sleeve member with an integrally molded reinforcing member disposed therein. In one embodiment, the reinforcing member comprises a pair of parallel spaced ring elements connected by a plurality of spacers. In another embodiment, the reinforcing member comprises first and second ring member abutted to form a T-shape. In a further embodiment, the reinforcing member comprises a ring and a plurality of axially oriented spacer members. In yet a further embodiment, the reinforcing member comprises a pair of ring elements connected by a plurality of pins. The pins are fixed to one of the ring elements and are slidably engageable with the other ring element. In an alternate embodiment, an auxiliary ring member is located within an interior opening of the reinforcing member.

Abstract: An operation for securing and coupling a coupling flange and a fluid device mounted through the interior of a valve case of a sluice valve for operations can be performed with good efficiency from the exterior while sufficiently ensuring the external mounting depth of the coupling tube part on the coupling flange and while facilitating the attachment of pulling and securing means and ensuring the attachment strength.

Abstract: Embodiments described herein relate to a retention pin for retaining a seat member in the body pocket of a gate valve. Two retention pins may be installed on the outer circumference of the seat member. The seat member is inserted into the body pocket and rotated so that the retention pins are positioned in grooves in the body pocket and the seat member is retained in the body pocket.

Abstract: A sprung gate for a valve having an endless elastic band sandwiched between first and second gate members that each define an opening therethrough in an open position portion thereof, which collectively form a passage through the sprung gate. The first gate member includes a fastener connected to a fastener receiving member of the second gate member thereby securing the first and second gate members together as a unit. This sprung gate unit is operatively connected to an actuator for linear translation within a pocket of a conduit to control fluid flow through the conduit. This assembled device may be manufactured using spin welding to sealingly mate the conduit to a housing enclosing the actuator.

Abstract: The present invention features a coke drum de-heading system that includes a de-header valve. The de-header valve includes: (1) a main body; (2) a live loaded seat assembly coupled to the main body and comprising a dynamic, live loaded seat, a live seat adjustment mechanism coupled to the main body and designed to control and adjust the force and resulting seat load of the dynamic, live loaded seat, and a force transfer module in juxtaposition to the dynamic, live loaded seat for transferring the force from the live loaded seat adjustment mechanism to the dynamic, live loaded seat; (3) a static seat positioned opposite from and counteracting or counterbalancing the dynamic, live loaded seat; and (4) a blind or sliding blind capable moving in a linear, bi-directional manner within the de-header valve and between the dynamic, live loaded seat and the static seat.

Abstract: The invention provides a double disc gate valve where the discs are movable in a casing by a disc manipulation structure which can change an orientation of at least one of the valve discs relative to the center plane away from an initial orientation by movement of an outer disc carrier relative to an inner disc carrier. The relative movement between the disc carriers is initiated automatically during opening and closing of the valve. The change in orientation facilitates sealing between the discs and valve seats by a gradually established contact between the discs and the seats and the required opening and closing force may therefore be reduced.

Abstract: Valves having a sprung gate of various constructions are disclosed. In one embodiment, the sprung gate includes a first endless elastic band having an inner perimeter defining an open space sandwiched between a first gate member and a second gate member that each define an opening therethrough in an open position portion thereof. The first endless elastic band is sandwiched therebetween with its open space oriented for alignment with the opening in both of the first and second gate members, which are aligned with one another to form a passage through the sprung gate. In one aspect, the first endless elastic band in positioned inward a distance from the outer sides of the first and second gate members and spaces the first gate member a distance apart from the second gate member thereby defining a channel having a bottom defined by the first endless elastic band.

Abstract: A system includes a split gate valve with first and second gate sections coupled together and configured to move together within a cavity of the split gate valve between an open position and a closed position. The split gate valve includes a rolling actuator to reduce friction and to convert a rotational input into a linear motion to move the first and second gate sections between the open and closed positions. The split gate valve also includes at least one expansion bar configured to bias the first and second gate sections from one another to seal against opposite seats of the split gate valve, wherein each expansion bar includes a spring mechanism configured to compress upon moving the first and second gate sections into and beyond the closed position to prevent buckling of the expansion bar.

Abstract: Embodiments of gate valves and methods of using same are provided herein. In some embodiments, a gate valve for use in a process chamber may include a body having an opening disposed therethrough from a first surface to an opposing second surface of the body; a pocket extending into the body from a sidewall of the opening; a gate movably disposed within the pocket between a closed position that seals the opening and an open position that reveals the opening and disposes the gate completely within the pocket; and a shutter configured to selectively seal the pocket when the gate is disposed in the open position. In some embodiments, one or more heaters may be coupled to at least one of the body or the shutter.

Abstract: A gate valve for controlling the flow of pressurized fluid having a dynamically-energized seal between a seat ring and a valve body. The dynamically-energized seal may be located in an annular groove defined in a flange sealing face of the seat ring to seal against an annular shoulder sealing face of the valve body. A plurality of fasteners may bring the flange sealing face of the seat ring to a mechanical stop against the shoulder sealing face of the valve body and dynamically energize the dynamically-energized seal. An obturator may engage and disengage the seat ring to control flow through the gate valve.

Abstract: A knife gate valve for specific environments comprises a knife valve with a body, a hand wheel, a yoke sleeve, a gland packing, a gland bushing, a stem, a wedge gate, seating surfaces and the like. All internal components of the device are provided with a high quality elastomeric liner. This surface is present on wetted surfaces such as body, seat and wedge surfaces exposed to the controlled material. This feature provides corrosion resistance, long life, and reduces leakage when compared to conventional valves. Its new style of internal design provides waterproof resistance for virtually types of industrial applications.

Abstract: A pig receiver and method retrieve pigs in pipeline pigging operations. In one embodiment, a pig receiver includes a pig receiver unit. The pig receiver also includes a pig gate valve assembly disposed on the pig receiving unit. The pig gate valve assembly includes a gate valve. The pig gate valve assembly also includes a first actuator and a second actuator. The pig gate valve assembly further includes a cylinder guide. In addition, the pig gate valve assembly includes a tie bar. Actuation of the tie bar actuates the gate valve. An end of the tie bar is attached to the first actuator, and an opposing end of the tie bar is attached to the second actuator.

Abstract: A gate valve and a method for making a gate valve for use with abrasive fracturing fluids, include provided enlarged spaces in the gate valve body wherein sand or other debris from the fracturing fluid may accumulate without affecting the operation of the gate of the gate valve.

Abstract: The present invention features a coke drum de-heading system comprising (a) at least one coke drum having an orifice therein; (b) a de-header valve removably coupled to the coke drum designed to de-head the coke drum; and (c) an exchange system, including an upper and lower bonnet and other elements and members adapted to integrate the de-heading system, and particularly the de-header valve, into the manufacturing system.

Abstract: A vacuum valve, including a valve housing, which has a passage having an axis, a seat that surrounds the passage and that lies in a first plane, and a counter seat that surrounds the passage and that lies in a second plane that forms a wedge shape with the first plane, and including a closure device, which can be moved between an open position in which the passage is released and a closed position in which the passage is sealed and which has a closure plate parallel to the first plane and a counter plate parallel to the second plane, and including a valve rod, which has a longitudinal axis and which carries the closure device and which can be moved in a straight line.