when we talk about industrial valves, it is important to know the different types available on the market to select the most suitable option for each process and guarantee security, efficiency and standards. That is why, today we are going to talk about one more of these options: to valve actuated.
in this reading, you will understand what this device is, its components, how it works and even examples of where it is used in different industries. Check it out below!
What is an actuated valve?
An actuated valve is an essential component in control systems and helps regulate the flow of fluids, gases and other materials in industrial pipes. It is widely used in industry in various processes., from a simple fluid blockage, to flow control, pressure or temperature.
What are the components of the actuated valve??
This item consists of two main parts: the valve itself and the actuator. The valve is usually a piece of metal with a through hole that can be opened or closed to control the flow of material through the pipeline.. The actuator is the device that provides the force to move the valve..
What types of actuators?
There are three main types of actuators: the hydraulics, pneumatic and electric. Each of them has its own characteristics and advantages., depending on the type of application. Let's talk more about each of them..
Os hydraulic actuators use a liquid to generate the force needed to move the valve. this liquid, usually oil, is pressurized by a hydraulic pump. The pressurized fluid is then sent to a hydraulic cylinder that pushes or pulls the valve stem., moving it to open or close it.
already the pneumatic actuators use compressed air. Air is sent to a pneumatic cylinder, that pushes or pulls on the valve stem to move it. Air pressure can be adjusted to control the speed and force of valve movement.
Lastly, os electric actuators use an engine to generate power. It is electronically controlled to ensure the valve moves at the correct speed and direction.. These actuators can also be equipped with sensors to provide feedback to the control system., ensuring that the valve is always in the correct position.
How an actuated valve works?
The actuated valve is actuated by means of the actuator that, as seen, can be electric, hydraulic or pneumatic. When the actuator is actuated, it converts the energy into a linear or rotary motion, depending on the type of that device.
Motion is then transmitted to the valve plug stem or shaft.. This brings the shutter to the desired position., allowing fluid to flow through the valve, in another word, completely blocked.
Once the valve plug is moved to the desired position, it is held there by means of retention forces, such as actuator mechanical spring force or fluid pressure.
Valve position can be controlled via a process controller, which receives input signals from the control system and adjusts its output signal to the actuator, in order to maintain the position of the valve as required by the process.
Actuated valves are widely used in many industries, including oil, gas, water treatment, food and drinks, chemical products and many others where it is necessary to control the flow of fluids in the industrial process.
What types of valves are actuated??
There are basically two types of actuated valves: control valves and on valves / off. The fundamental difference between them lies in their ability to control.
Valve set on / off
One on/off valve has only two positions: completely open, which allows all fluid flow to pass, or completely closed, which completely impedes the flow.
It is generally used in systems where simple flow control is required., such as irrigation. Also often appears in security applications, to allow or block the passage of liquids or gases in cases of emergency.
Control actuated valve
already one control valve can be adjusted to precisely control the flow of liquids or gases in a system, allowing it to be regulated within a wide range of values.
This valve is generally equipped with a positioner that measures its position and compares it with the signal sent by the control system.. Right away, it adjusts the valve position to match the received control signal. This helps ensure the valve is always in the correct position to keep fluid flow within desired limits..
Control valves are widely used in industrial processes where precise flow control is required., such as pressure reduction systems, temperature control, flow control, dosage, between others.
Where actuated valves are applied?
Generally, Actuated valves are essential for a wide variety of industries and applications, helping to prevent leaks, ruptures and other problems that may affect the safety and efficiency of industrial processes. Check out some examples below.
Industrial process control: actuated valves are often used to control processes in industries such as petrochemicals, chemistry and food. They can be used to regulate the flow of liquids and gases in a process, ensuring production is consistent and controlled.
Pharmaceutical industry: actuated valves are essential for the production of medicines and other pharmaceutical products. They are used to control the flow of liquids and gases at all stages of the manufacturing process., from mixing and storage to packaging and shipping.
Water distribution and sanitation: in water distribution and sanitation systems, actuated valves are used to control the flow of water and other substances. They can also be used to regulate water pressure, which helps prevent leaks and pipe ruptures.
industry energy: in power plants, including hydroelectric plants, nuclear and thermal, Actuated valves are also widely used to control water flow, steam and other fluids throughout the industry system.
Automotive industry: actuated valves are used in a variety of automotive applications, including in braking and suspension systems. They are used to control the flow of fluids in hydraulic and pneumatic systems., helping to ensure safe and reliable performance.
Food processing industry: The food processing industry uses actuated valves to control the flow of liquids and gases in various processes, how to fill containers, mixing of ingredients and pasteurization, ensuring food is produced safely and efficiently.
How to choose the best actuated valve for each process?
When choosing the best actuated valve for a specific application, It is important to consider several factors, such as the type of fluid to be controlled, system pressure and temperature, actuator characteristics and safety and reliability requirements. Understand the step by step below.
Consider valve shape
The first factor to consider when choosing an actuated valve is the appropriate model for the application. There are valves globo, butterfly, ball, among others. Each type has its own advantages and disadvantages and is best suited for certain applications..
For example, Globe valves are ideal for applications requiring high control precision, while butterfly valves are more suitable for rapid flow control applications.
Take into account the type and characteristics of the actuator
Consider the type of actuator to be used with the valve. Previously, you saw that the three main types of actuators are electrical, hydraulic and pneumatic and each of them has its own advantages and disadvantages.
It's worth knowing, for example, that electric actuators are ideal for applications that require high precision and control in remote areas, while pneumatic ones are more suitable for applications that require high opening and closing speed, in addition to being cheaper than electric ones.
When talking about actuator characteristics, it is necessary to evaluate which of them can provide the strength, required speed and accuracy for the specific application. In addition, It is important to consider the size, weight and energy required to operate the actuator.
Assess system pressure and temperature
The third point is to choose a valve that can handle the pressures and temperatures of the system in which it will be applied., without failing or leaking. In addition, It is important to look for an actuator that can provide enough torque to operate the valve under extreme pressure and temperature conditions..
Security and reliability requirements
Lastly, It is important to consider the security and reliability requirements of the application. This includes the need for redundancy, locking systems, pressure relief systems, between others. It is important to choose a valve that can provide the reliability and safety required for the specific application..
Other types of valves
The variety of types and specific applications of actuated valves extends to others valve types. Here at KLINGER Brazil, We work with different types of this product and that is why we are experts on the subject..
Learn more about them on our website or connect with us on LinkedIn for details about valves, sealing materials, fluid control accessories and more!
