A Flow control valve is a valve that controls fluid flow by adjusting the size of the flow passage in response to a controller signal. This allows for direct control of flow rate and, as a result, control of process quantities such as pressure, temperature, and liquid level.
Process Plants require that some of the important process variable such as pressure, flow, level ,temperature etc need to kept and maintained within a required operating range to ensure that the final product is obtained with the same quality and consistency. For this reason , there are hundreds or even thousands of control loops all networked together in the Process plants.
A control valve is referred to as a final control element in automatic control language. It is the final device in a control loop that manipulates the process variable directly. The controller delivers a signal to the actuator, which moves the valve stem, opening or closing the valve and changing the flow of fluid.
Flow control valve application
- Oil and gas
- Power generation
- Food and beverage
- Water treatment
The type of flow control valve used depends on the specific application.
Selection of a flow control valve
- Fluid properties
- Flow rate
- Valve size
- Valve material
- Actuator type
- Valve cost
Control valves are an essential part of many industrial processes. They play a critical role in maintaining process efficiency and safety.
What are the applications of flow control valve
Below are applications of the control valve in piping systems.
- To maintain a desired flow rate
- To maintain a desired pressure
- To maintain a desired temperature
- To maintain a desired liquid level
- To prevent over pressure or under pressure
- To prevent spills or leaks
- To protect equipment
- To improve efficiency
- To save energy
Flow Control valve is a versatile and essential part of many industrial processes. They are used to control a wide variety of process variables, and they can be found in a wide range of industries.
What is flow control valve symbol
Below is the symbol of flow control valve