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A control valve is a valve used to control fluid flow by varying the size of the flow passage as directed by a signal from a controller. This enables the direct control of flow rate and the consequential control of process quantities such as pressure , temperature , and liquid level.
A control valve is a valve used to control fluid flow by varying the size of the flow passage as directed by a signal from a controller. This enables the direct control of flow rate and the consequential control of process quantities such as pressure, temperature, and liquid level.
Mar 7, 2024 · The control valve is an automated valve that can make precise adjustments to regulate and monitor any commodity flowing through a piping system. The function of a control valve is to provide throttling control in response to signals from a control system, using an actuator and a positioner.
A valve controls system or process fluid flow and pressure by performing any of the Following functions. a) Stopping and starting fluid flow. b) Varying (throttling) the amount of fluid flow. c) Controlling the direction of fluid flow. d) Regulating downstream system or process pressure. e) Relieving component or piping over pressure.
A “control valve” works to restrict the flow of fluid through a pipe at the command of a remotely sourced signal, such as the signal from a loop controller or logic device (such as a PLC), or even a manual (“hand”) interface controlled by a human operator.
Control Valve Handbook - Emerson
Aug 26, 2021 · Control valves precisely control the fill volume of a liquid in liquid filling applications. The fill volume is adjusted and fixed from the main control panel. The control valve accurately controls the fluid flow inside the container.
The act of choosing an appropriate control valve for the expected energy dissipation is called valve sizing. Physics of energy dissipation in a turbulent fluid stream. Control valves are rated in their ability to throttle fluid flow much in the same way resistors are rated in their ability to throttle the flow of electrons in a circuit.
Control valves are an increasingly vital component of modern manufacturing around the world. Properly selected and maintained control valves increase efficiency, safe-ty, profitability, and ecology. The Control Valve Handbook has been a primary reference since its first printing in 1965.
Control valves are power-operated devices used to automatically modify fluid flow or rate pressure in a process system. The terms 'control valve' and 'throttling valve' are often used interchangeably but there is a distinction between the two.
