Abstract: Balanced plug assemblies and pressure regulators having balanced plug assemblies are described herein. A pressure regulator disclosed herein includes a device body defining a fluid passageway between an inlet and an outlet. The device body defines a channel between the fluid passageway and a pressure sense chamber. The pressure regulator includes a seat in the fluid passageway, a stem having a flange, and a plug coupled to the stem. The pressure regulator also includes a stem guide disposed in the channel of the device body. The flange of the stem disposed in a balance chamber of the stem guide and divides the balance chamber into a first balance chamber portion and a second balance chamber portion. The stem guide at least partially forms a balance passage that fluidly couples the pressure sense chamber and the second balance chamber portion.

Abstract: Universal control circuitry for an electro-hydraulic valve actuator system includes logic gate circuitry to control one or more of a closing solenoid valve, an opening solenoid valve, an emergency shutdown solenoid valve, and a hydraulic fluid pump motor to route hydraulic fluid through a hydraulic circuit to actuate a valve via a hydraulic actuator according to received commands. The universal control circuitry is configured to control operation for multiple different configurations of a hydraulic valve actuator system including double-acting configurations, single-acting spring-to-open configurations, and single-acting spring-to-close configurations, each with or without an emergency shutdown arrangement (which may be configured to trip based on an external shutdown input alone or in combination with a local system power failure), a hydraulic accumulator, and maintained or momentary input commands.

Abstract: Flame arrestors and methods of making flame arrestors are described herein. An example flame arrestor includes a cylindrical body. The body includes a first end and a second end opposite the first end. The first end of the body has an end surface. The body also includes a recess formed in the end surface of the first end. The recess is defined by a recessed surface extending inward from the end surface toward the second end. The body further includes a set of channels formed through the body between the first and second ends. The channels extend through the recessed surface.

Abstract: A trim assembly for a regulator can include a cage and a plug assembly. The cage can include a peripheral wall defining an opening and a plurality of cage apertures formed in the peripheral wall. The plug assembly can include a plug and a sealing element and can be configured to be moveably received within the opening so that the sealing element contacts an inner surface of the cage to vary a flow area through the plurality of cage apertures depending on the position of the plug.

Abstract: Embodiments of the invention provide an actuator (100) for a valve assembly. The actuator can include a yoke (146) with at least one bore (196), a first rod assembly (136), and a first slide member (148) seated within the at least one bore and pivotally connected to the first rod assembly. The yoke can be configured to rotate about a yoke axis (198) to actuate the valve assembly. The first rod assembly can be configured to move in a first direction transverse to the at least one bore and the yoke axis. The first slide member can be configured to slide telescopically within the at least one bore as the first rod assembly moves in the first direction to transmit torque to the yoke for actuation of the valve assembly.

Abstract: Valve handles and dual-valve assemblies having handles are disclosed herein. An example dual-valve assembly includes a first valve having a first shaft. The first valve has a plate with a notch. The dual-valve assembly also includes a second valve having a second shaft. The dual-valve assembly further includes a handle coupled to the first and second shafts, such that when the handle is rotated, the first and second shafts are rotated simultaneously. The handle includes a body and a flexible arm coupled to and extending from the body. The flexible arm has a lock edge sized to fit within the notch to limit rotation of the handle relative to the first and second valves.

Abstract: An adjustable cage assembly for a flow control device can include a first cage body and a second cage body. The first cage body can be rotationally fixed relative to the second cage body at a plurality of alignments to provide a flow opening of variable size for adjustable control of fluid flow areas through the adjustable cage assembly.

Abstract: A method of custom manufacturing a flame arrestor assembly configured to extinguish a flame propagating therethrough. The method includes creating a customized flame cell using an additive manufacturing technique, which generally includes forming a body and forming one or more channels in the body. The one or more channels define a flow path configured to transfer heat from a flame front propagating through the flow path to the body. The method also includes providing a housing, and securely arranging the flame cell within the housing.

Abstract: Plates and plate assemblies for noise attenuators and other devices and methods of making the same are described herein. An example plate assembly includes a support frame to be coupled to a body of the noise attenuator. The support frame has a plurality of radially extending ribs. The plate assembly also includes a disc-shaped plate having a plurality of openings forming flow paths to attenuate noise. The disc-shaped plate is coupled to the support frame such that pressure-induced loads on the disc-shaped plate are distributed to the plurality of radially extending ribs of the support frame.

Abstract: Methods, apparatus, systems and articles of manufacture are disclosed for leak detection from a thief hatch. An example thief hatch includes a vent control stem coupled to first and second sealing plates, the first and second sealing plates to control fluid flow through the thief hatch based on translation of the vent control stem, and an indicator extending from the vent control stem to provide a visual indication of a condition of the fluid flow.

Abstract: Testable, redundant pneumatic control assemblies and related systems and methods are described herein. An example pneumatic control assembly described herein includes first, second, and third parallel supply channels between a compressed air supply and valve header, first, second, and third parallel vent channels between a vent and the valve header, and first, second, third, fourth, fifth, and sixth logic valves. The first and sixth logic valves are disposed in the first parallel supply channel and the first parallel vent channel, the second and third logic valves are disposed in the second parallel supply channel and second parallel vent channel, and the fourth and fifth logic valves are disposed in the third parallel supply channel and third parallel vent channel. The pneumatic control assembly also includes a first, second, and third solenoid valves to control certain ones of the logic valves.

Abstract: An example apparatus to prevent side load in hydraulic override pumps includes a lever rotatably mounted to a support. The apparatus includes a pump cylinder rotatable about a first end of the pump cylinder. The apparatus also includes a pump rod operatively coupled to the lever to move within the pump cylinder based on rotation of the lever. The pump cylinder rotates when the pump rod moves within the pump cylinder.

Abstract: A control assembly can be configured for use with a pressure regulator having a valve body defining a fluid flow path. The control assembly can include a control member, a stem, and a lever, and can be disposed within the pressure regulator to selectively control fluid flow. The control assembly can include a primary control member and a secondary control member, or a mechanical stop that can operate to restrict flow along the fluid flow path, including when the stem disconnects from the lever.

Abstract: Plates and plate assemblies for noise attenuators and other devices and methods of making the same are described herein. An example disc-shaped plate described herein includes a plurality of sector-shaped plates that have openings defining flow paths. Each of the plurality of sector-shaped plates has a first radial edge forming a first mating feature and a second radial edge forming a second mating feature that is complementary to the first mating feature such that, when the plurality of sector-shaped plates are arranged together, the first mating feature of each of the plurality of sector-shaped plates mates with the second mating feature of an adjacent one of the plurality of sector-shaped plates.

Abstract: A method of custom manufacturing a flame arrestor includes providing a housing having an interior surface and an exterior surface where the exterior surface of the housing is shaped to fit within a fluid passageway. The method includes forming, using an additive manufacturing technique, a three-dimensional lattice structure by depositing a first material onto the interior surface of the housing in a predetermined pattern. The lattice structure includes a plurality of connected lattice members forming channels extending from a first end to a second end of the three-dimensional lattice structure. An element of a second material is provided adjacent to the three-dimensional lattice structure. The second material is different than the first material and the element is configured to draw heat away from fluid flowing through the plurality of channels.

Abstract: Example noise attenuators for use with process control devices are described herein. An example apparatus includes a first plate and a second plate disposed in a fluid passageway of a noise attenuator. The second plate is spaced apart from the first plate. The example apparatus also includes a first support rod extending along a central axis of the fluid passageway. The first support rod is coupled to the first plate and to the second plate. The example apparatus further includes a second support rod extending along an axis parallel to and offset from the central axis. The second support rod is coupled to the first plate and the second plate.

Abstract: Manual hydraulic override pumps for use with actuators are described herein. An example apparatus includes a manifold including a reservoir port to be fluidly coupled to a reservoir of fluid, a pump port to be fluidly coupled to a pump, a first actuator port to be fluidly coupled to a first chamber of an actuator, and a second actuator port to be fluidly coupled to a second chamber of the actuator. The example apparatus also includes a rotor disposed in a cavity formed in the manifold. The rotor is rotatable between a first actuating position in which the rotor fluidly couples the first actuator port and the pump port, and a second actuating position in which the rotor fluidly couples the second actuator port and the pump port.

Abstract: Example multiple stage anti-surge valves are disclosed. In some examples, an apparatus includes a cage having a first section adjacent the valve seat with a first fluid flow passage, a second section spaced from the first section along a longitudinal axis of the cage with a second fluid flow passage, and a third section devoid of a fluid flow passage between the first and second sections. The example apparatus includes a plug slidably disposed in the cage, the plug having a third fluid flow passage through a skirt of the plug, the third fluid flow passage to be fluidly coupled to the second fluid flow passage during a stroke of the plug.

Abstract: A valve includes a valve body forming a channel defining a fluid flow path extending from an inlet port to an outlet port of the valve body via a gallery disposed therebetween, an opening disposed in communication with the gallery, a valve assembly at least partially disposed through the opening and in the gallery, and a set pin having a central longitudinal axis. A valve disc of the valve assembly moves between a first position spaced from a valve seat of the valve body and a second position in contact with the valve seat. The set pin is coupled to and at least partly supported by the valve assembly to maintain the valve assembly in the first position. The fluid flow path allows a fluid to flow through the valve body in a first direction and a second direction opposite the first direction. The set pin is adapted to disengage a portion of the valve assembly when contacted by a fluid traversing the fluid flow path in the second direction, allowing the valve disc to move to the second position.

Abstract: A control assembly can be configured for use with a pressure regulator having a valve body defining a fluid flow path. The control assembly can include a control member, a stem, and a lever, and can be disposed within the pressure regulator to selectively control fluid flow. The control assembly can include a primary control member and a secondary control member, or a mechanical stop that can operate to restrict flow along the fluid flow path, including when the stem disconnects from the lever.