This classification method is divided by principle, function and structure. It is the most commonly used classification method at home and abroad. It is generally divided into gate valve, stop valve, throttle valve, instrument valve, plunger valve, diaphragm valve, plug valve, ball valve, butterfly valve, check valve, pressure reducing valve, safety valve, drain valve, regulating valve, bottom valve, filter, blowdown valve, etc.
As the valve is widely used, it also plays a great role. For example, in power plants, valves can control the operation of boilers and steam turbines; In petroleum and chemical production, valves also play a role in controlling the normal operation of all production equipment and process flow. The same is true in other departments. Nevertheless, the comparison of valves with other products is often ignored. For example, when installing machinery and equipment, people often focus on the main machinery and equipment, but ignore the valve. This will reduce the overall production efficiency or stop production, or cause various other accidents. Therefore, the selection, installation and use of valves must be carefully responsible.
