Learn About 3 Different Types of Control Valves
The control valve is named as the final element of control that contains a pneumatic device. It transforms the control signal received from the controller to regulate the flow of fluid in the system. Valves are available in various different types to deal with a variety of gas, liquids, air and steam.
If you are in the market in search for the most appropriate valve for your use then check out this article. Here you will get a description of different types of valves along with their advantages and disadvantages. This prior learning will help you make an efficient buying decision.
What are the Industrial Valves and their types?
Industrial valves are units that help in regulation of gases, liquids, and slurries. The gas or liquid flow can easily be monitored via these valves. It can be performed through pipes and by closing, opening, or partially hindering the pipe or passageway.
Industrial valves come in various different types such as Globe Valves, Gate Valves, Butterfly Valves, Ball Valves, Pressure Valves, Diaphragm Valves, Baumann valves and Check Valves. All these valves carry out various different types of functions when they work on a different set of working principle.
Different categories of valves
These valves are identified by a slider that moves by the stem in vertical direction to the flow of gas.
Gate valves are generally used for off and on the application. They are best suited for high pressure and temperature use with varying quality of fluids. These valves are not majorly used for viscous fluid, slurries, etc.
The basic advantage of a gate valve is the occurrence of low pressure drop when it gets fully open.
In a semi-open state, a gate valve can result in vibration, wear and tear in the seat disc. Representing slow response features and need for large amount of actuating force are some disadvantages of a gate valve.
In globe valves, a plug or a disc is moved off or on the seat. The opening of the seat is proportionate to the distance travel by the plug. It is characterized as short sized stem travel, large pressure reduction, high flow controllability and high seating capacity.
Globe valve is mainly used for regulating objectives. It is considered for a high temperature application.
A globe valve is quicker to close or open. It is the most trustworthy form of seating. Throttling helps in regulating the flow of gas to any degree. It comes with a positive shut-down feature too.
In globe valve, the only disadvantage is that damage to the seat can happen in semi-open conditions.
A plug valve comprises of a body, cover and a plug. The plug present in this valve is generally cylindrical or tapered.
These valves are mostly used in petroleum, chemical and refinery industries.
These valves are small sized devices that need less headroom space. It is available in vast varieties of materials. A plug valve provides quick opening, low pressure reduction and tight shut off feature.
This valve is subjected to galling.
Getting a good understanding of the different types of available valves in the market will help you in forming a wise decision.