Function comparison of Chinese check valves: Understand their working principle and importance
In the fluid control system, the Chinese check valve is a common device whose main function is to prevent the reverse flow of fluid. This article will deeply discuss the working principle and importance of China’s check valve from a professional perspective.
1. How it works
The working principle of China’s check valve mainly depends on its internal valve structure. When the fluid flows from the inlet to the outlet, the valve of the Chinese check valve closes, preventing the fluid from flowing in the opposite direction. When reverse flow is required, the valve can be reopened by changing the on/off state of the valve so that the fluid can flow in reverse.
2. Function comparison
There are mainly several types of Chinese check valves: lift-type Chinese check valve, swing Chinese check valve, butterfly Chinese check valve and diaphragm Chinese check valve. These different types of Chinese check valves differ in structure and performance, so their specific application scenarios should be considered when selecting and using them.
- Lift type China check valve: This type of China check valve is mainly used in liquid pipeline systems, and its valve is mainly composed of two parts, the upper part is divided into valves and the lower part is divided into springs. When the fluid pressure exceeds the set value of the spring, the valve automatically opens to allow the fluid to flow in reverse.
- Swing Chinese check valve: This type of Chinese check valve is mainly used in gas and steam systems, and its valve is mainly composed of a round disc and a handle. When the handle is turned clockwise, the valve opens to allow the fluid to flow in reverse.
Butterfly check valve: This type of Chinese check valve is mainly used in liquid and gas pipeline systems, and its valve is mainly composed of a disc and a butterfly plate. When the disc is rotated counterclockwise, the disc opens, allowing the fluid to flow in reverse.
Diaphragm type China Check valve: This type of China check valve is mainly used in corrosive and high-viscosity fluid systems, and its valve is mainly composed of a diaphragm and a body. As the diaphragm moves up and down, the valve opens or closes, controlling the flow of fluid.
Step 3: Importance
The main function of China check valve is to prevent the reverse flow of fluid and protect the normal operation of equipment. In many industrial applications, such as petroleum, chemical, electric power, etc., China check valves are required to control the flow of fluid. In addition, China check valves can also be used to regulate flow, control pressure and prevent media backflow.
In general, Chinese check valves play a vital role in fluid control systems. Only the correct selection and use of Chinese check valves can ensure the normal operation of the fluid system and the safety of the equipment.
Post time: Oct-10-2023
