In fluid piping systems, valves are control elements whose primary function is to isolate equipment and piping, regulate flow, prevent backflow, regulate and drain pressure. It can be used to control the flow of various types of fluids such as air, water, steam, various corrosive media, mud, oil, liquid metal and radioactive media. Since it is important to select the most suitable valve for the piping system, it is important to understand the characteristics of the valve and the steps and basis for selecting the valve.
The final control of the pipeline is the valve. The valve opening and closing member controls the flow pattern of the medium in the pipeline. The shape of the valve runner makes the valve have certain flow characteristics. This must be taken into account when selecting the most suitable valve for the pipeline system.