China check valve defect analysis: unadjustable flow

China check valve defect analysis: unadjustable flow

China check valve is a commonly used fluid control equipment, which has the advantages of preventing countercurrent and good sealing. However, Chinese check valves also have some drawbacks, chief among which is their non-adjustable flow rate. This article will analyze the shortcomings of China’s check valves from a professional perspective for you, and provide you with some reference and help.

1. The traffic cannot be adjusted

The main function of the Chinese check valve is to prevent the reverse flow of fluid, rather than regulate the flow. Therefore, the Chinese check valve cannot control the flow of fluid by adjusting the opening like other valves. This means that if you need to change the fluid flow in the piping system, you need to use other types of valves, such as throttle valves, regulating valves, etc.

2. High installation and maintenance costs

Due to the relatively simple structure of Chinese check valves, their installation and maintenance costs are relatively low. However, for some special types of Chinese check valves, such as high pressure, high temperature, corrosion resistance, etc., its installation and maintenance costs may be higher. In addition, if the Chinese check valve needs to be maintained and replaced, it also needs to pay a certain cost and time.

3. Easy to produce water hammer phenomenon

In the liquid pipeline system, when the liquid flow rate is too fast, it will produce water hammer phenomenon. This phenomenon will lead to vibration and noise of the pipeline system, and even cause damage to the pipeline system. For some liquid piping systems, the use of Chinese check valves may lead to the occurrence of water percussion. Therefore, when selecting and using China check valves, factors such as liquid flow rate need to be considered to avoid the occurrence of water shock.

4. Not suitable for gas piping systems

Due to the structural characteristics of the Chinese check valve, it is not suitable for gas pipeline systems. In the gas pipeline system, the speed of gas flow is faster, and the pressure of gas is low. These factors will affect the working effect and service life of China’s check valve. Therefore, in the gas pipeline system, other types of valves need to be selected to control the flow of gas.

In short, China check valve as a commonly used fluid control equipment, has the advantages of preventing reverse flow, good sealing and so on. However, the disadvantages of its non-adjustable flow cannot be ignored. In the selection and use of China check valves, it is necessary to conduct comprehensive consideration according to the specific working conditions and use needs. I hope this article analyzes the shortcomings of China’s check valves and can provide you with some reference and help.