Valves are pipeline accessories used to open and close pipelines, control flow, adjust and control the parameters (temperature, pressure and flow) of the conveying medium.

The valve is a control component in the fluid conveying system, which has the functions of cut-off, regulation, diversion, prevention of reverse flow, stabilization, diversion or overflow and pressure relief. Valves used in fluid control systems, ranging from the simplest shut-off valves to the various valves used in extremely complex automatic control systems, have a wide range of varieties and specifications.

Different types of valves have very different working principles. Today, I will share with you the dynamic diagrams of common valves to understand the working principle of valves intuitively:

1. Butterfly valve

2. Ball valve

3. Globe valve

4. Swing check valve