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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 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.
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 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. [1] 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” 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.
Types of Control Valves. by Editorial Staff. Control valves are available in different types and shapes. They can be classified in different ways; based on: (a) action, (b) number of plugs, and. (c) flow characteristics.
Control Valve Handbook - Emerson
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.
Aug 26, 2021 · Control valves manipulate fluid flow rate in industrial applications. How do they work, what kinds are there, and what are some specific applications?
A flow control valve regulates the flow or pressure of a fluid. Control valves normally respond to signals generated by independent devices such as flow meters or temperature gauges . Operation. Globe control valve with the pneumatic actuator and smart positioner. The loop current and stem travel are displayed.
