The sampling valve has a very wide range of applications. For example, it will be used in some fields such as chemical industry, metallurgy, hydropower, etc. However, there are certain matters that need to be paid attention to in the process of use. The following is an introduction.
1. Because the valve plate of the sampling valve will have multiple layers of soft and hard stacked sealing rings fixed on it, when the sliding plate is in a normally open state, the medium will form an scouring force on the sealing surface of the sampling valve, and the metal The soft sealing tape in the interlayer will directly affect the sealing performance after being scoured. Therefore, in the process of use, we must pay attention to the sealing performance.
2. When making the sampling valve, the diameter should be greater than dn200. If the overall structure of the valve plate is too thick, there will be a lot of flow obstruction, that is, the diameter is limited by the structural conditions.
3. In fact, the sealing performance between the sealing surface of the valve plate and the valve seat of the sampling valve mainly depends on the torque of the transmission device so that the valve plate is pressed against the valve seat. If it is in a positive state, the higher the medium pressure, the tighter the seal extrusion will be. Therefore, when the medium is left to flow back, as the medium pressure continues to increase, when the unit positive pressure between the valve plate and the valve seat is small and the medium pressure, the seal of the sampling valve will begin to leak.
The above are the precautions for the sampling valve. In the process of daily use, you must pay more attention. In order to purchase higher-quality products and avoid misoperation during use, the editor recommends that every consumer should understand the relevant sampling valve knowledge and be aware of it, so that they will not make a choice. Operate Xiaobai.