Abstract: A process control apparatus for the control of an industrial process is disclosed herein. The process control apparatus may include a power supply that supplies electrical power, and a single source disposed about an industrial process, the source in electrical communication with the power supply to receive electrical power therefrom. The source converts the electrical power into a wireless power signal. A number of receivers may be disposed about the industrial process, each receiver adapted to receive the power signal wirelessly, convert the power signal into electrical power, and communicate the electrical power onto a field device. The power signal may include an oscillating magnetic field M or electromagnetic waves that may be generally in the ultra-high frequency (UHF) range. Related methods of process control of an industrial process are also disclosed herein.

Abstract: A process control apparatus for the control of an industrial process is disclosed herein. The process control apparatus may include a power supply that supplies electrical power, and a single source disposed about an industrial process, the source in electrical communication with the power supply to receive electrical power therefrom. The source converts the electrical power into a wireless power signal. A number of receivers may be disposed about the industrial process, each receiver adapted to receive the power signal wirelessly, convert the power signal into electrical power, and communicate the electrical power onto a field device. The power signal may include an oscillating magnetic field M or electromagnetic waves that may be generally in the ultra-high frequency (UHF) range. Related methods of process control of an industrial process are also disclosed herein.

Abstract: A system and method for wireless power transfer for process control devices is disclosed. The control devices may be process transmitters, or process control valves equipped with digital valve controllers (valve positioners).

Abstract: An apparatus includes a cage and a main plug disposed in the cage. The main plug is movable between a main plug closed position and a main plug open position. A seal assembly disposed on the main plug, the seal assembly having a seal that is configured to contact the cage when the main plug is in the main plug closed position, and configured to reduce contact with the cage when a pressure differential across the seal is reduced. The apparatus includes a pressure balancing assembly movable between a closed position, an overtravel position and an open position. The pressure balancing assembly is configured to balance the pressure differential across the seal when in the overtravel and open position.

Abstract: A flow control system includes a pilot driven valve having a pilot assembly and a main valve assembly; a displacement measurement component coupled to the main valve assembly indicating displacement of the main valve assembly; and a proportional solenoid responsive to a signal from the displacement measurement component that displaces the pilot assembly in proportion to the changes in displacement of the main valve assembly. The valve is controlled by sensing a displacement of the main valve assembly; and modulating the proportional solenoid in response to the displacement of the main valve assembly.

Abstract: An apparatus includes a cage and a main plug disposed in the cage. The main plug is movable between a main plug closed position and a main plug open position. A seal assembly disposed on the main plug, the seal assembly having a seal that is configured to contact the cage when the main plug is in the main plug closed position, and configured to reduce contact with the cage when a pressure differential across the seal is reduced. The apparatus includes a pressure balancing assembly movable between a closed position, an overtravel position and an open position. The pressure balancing assembly is configured to balance the pressure differential across the seal when in the overtravel and open position.

Abstract: A flow control system includes a pilot driven valve having a pilot assembly and a main valve assembly; a displacement measurement component coupled to the main valve assembly indicating displacement of the main valve assembly; and a proportional solenoid responsive to a signal from the displacement measurement component that displaces the pilot assembly in proportion to the changes in displacement of the main valve assembly. The valve is controlled by sensing a displacement of the main valve assembly; and modulating the proportional solenoid in response to the displacement of the main valve assembly.

Abstract: A valve assembly for controlling the flow of fluid through a conduit section having and an inlet and an outlet in which a ball valve having a through bore formed therein is rotatably mounted in the conduit section. The ball valve moves between an open position in which at least a portion of the bore registers with the inlet to permit the flow of the fluid through the ball valve, and a closed position in which fluid flow through the ball valve is prevented. An insert is disposed in the conduit section downstream of the ball valve, and a first series of passages are formed through the insert for receiving the fluid from the ball valve. At least one addition series of passages extend through the insert for receiving fluid from the first series of passages and discharging the fluid to the outlet, with the passages reducing the noise generated by the fluid flow.

Abstract: A valve assembly and method for controlling the flow of fluid through a conduit in which a ball valve is disposed in the conduit and is provided with a through bore for receiving the fluid. An insert is also disposed in the conduit downstream of the ball valve and has a plurality of relatively small flow passages. A relatively large flow passage is defined by that portion of the conduit not occupied by the insert. The valve is rotatable in the conduit to direct the fluid from its bore through one or more of the flow passages and a portion of the insert forms an airfoil surface to prevent separation of the fluid as it passes through the relatively large flow passage.

Abstract: A ball valve assembly and method in which a ball valve is rotatable in a conduit section to selectively permit fluid flow through the bore to control the flow of the fluid through the conduit section. An insert is disposed in the valve bore, has a plurality of small-diameter passages and defines, with a portion of the valve, a large-diameter passage extending therethrough. The valve is rotated from its closed position to a first, partially-opened position where the small-diameter passages are in the flow path of the fluid to reduce the flow rate and the noise caused by the fluid flow. The valve can be rotated to a fully-opened position in which the large-diameter passage is in the flow path of the fluid to achieve relatively high flow rates. The insert forms an airfoil surface to prevent separation of the fluid as it passes through the large-diameter passage.

Abstract: A ball valve assembly and method in which a ball valve is rotatable in a conduit section to and from an open position in which at least a portion of a bore in the valve registers with the inlet and the outlet of the conduit section to permit the flow of the fluid through the conduit section. An insert is disposed in the bore and has a plurality of through passages formed therein for reducing the noise caused by the fluid flow though the ball valve and is operable over a relatively wide range of pressure drops and flow rates.