The introduction and classification of regulating valve, as well as the way of selection

The introduction and classification of regulating valve, as well as the way of selection

A regulator is a mechanical device that controls fluid flow or pressure. It is usually used to regulate the flow rate, pressure, and temperature of a fluid so that the fluid is in and out of a system or equipment in normal working condition. Regulating valve is usually composed of valve body, cut-off parts, waist ring, bellows, spring, piston, seat and other components. They basically have an indicator and a manual lever, and these elements are used to control the opening of the valve in order to regulate the flow correctly.

Different types of regulating valves may have different structures and modes of operation. Common regulating valves include butterfly valves, gate valves, ball valves, plug valves, globe valves and check valves. Butterfly valve is suitable for some require quick switching, choke and adjustment of relatively large occasions. Gate valves have excellent cut-off performance and are suitable for use in high pressure or high temperature areas. Ball valves are often used for medium, low pressure and high temperature fluid control. The cartridge valve is suitable for controlling viscous, granular material and other media that are not easy to drain. Stop valves can shut off fluid completely, while check valves allow fluid to flow in one direction and are often used to protect equipment and prevent backflow.

In the selection, need to consider the factors are: the use of media, pressure range, temperature range, flow range, installation conditions and environmental conditions. The appropriate type of regulating valve should be selected to adapt to the characteristics of the medium. In the further selection of specific models, it is also necessary to consider: medium temperature, pressure, density, viscosity, the medium requirements of the operating medium, and so on, to ensure that the equipment can work normally and efficiently.

In short, regulating valve in industry, chemical industry and other fields has an irreplaceable role, so the choice of suitable regulating valve, is also an important part of ensuring stable production.