Time of publication:

2023-11-06

In the process of pipeline use, the role of the valve is to control the flow of fluid. However, before starting to use the valve, the valve needs to be fully opened to ensure smooth fluid flow. However, if the valve is fully opened directly, it is not conducive to the operation and use of the pipeline. Therefore, after the valve is fully opened, it is necessary to return a little, which can protect the valve and the pipeline. Specifically, there are two main reasons for returning a little: 1, to avoid the reverse pressure on the valve sealing surface damage The valve usually uses a sealing surface to control the flow of fluid. When the valve is closed, the sealing surface is used to prevent fluid from passing through the valve. When the valve is fully open, the sealing surface may be subjected to reverse pressure, resulting in damage to the sealing surface. Therefore, it is necessary to return to a point after the valve is fully opened, leaving a gap to reduce the impact of reverse pressure, thereby protecting the sealing surface of the valve. 2. Relieve the impact of pipeline pressure on the valve The fluid in the pipeline will be affected by various pressures during the movement. When the valve is fully open, the fluid pressure in the pipeline will impact the valve, which will adversely affect the valve and the pipeline. Back to a point can alleviate the impact of pipeline pressure on the valve, to protect the safe use of valves and pipelines. 2. back to the specific operation method The specific operation method of returning to a point is as follows: 1. Open the valve fully. 2, slowly close the valve until leaving a small gap. After waiting for a period of time, the valve is completely closed. It should be noted that in the process of returning to a point, it is necessary to operate slowly to ensure that the gap left is appropriate to prevent the normal use of the pipeline from being affected. 3. Summary Valve in the use of the pipeline is a very important part of the valve, the full open and back to a point for the smooth operation of the pipeline and the safe use of valves and pipelines have an important role. When the valve is fully opened, back to the role of a point is to protect the valve sealing surface and ease the impact of pipeline pressure on the valve. When the operation is back to a point, it needs to be carried out slowly and pay attention to leaving appropriate gaps to ensure the safe operation of valves and pipelines.