We have summarized a series of questions that Nogan customers have about the use of Slurry Valve products, and our engineers have made the following answers. In addition, it is recommended that customers consult engineers or customer service personnel before selecting a model. Because selection is more important than calculation, and selection is much more important and complicated than calculation.
Because calculation is just a simple formula calculation, it does not depend on the accuracy of the formula itself, but on whether the given process parameters are accurate. The selection involves a lot of content. If you are not careful, it will lead to improper selection, which will not only cause waste of manpower, financial resources, and material resources, but also unsatisfactory use effects, thus bringing about several use problems, such as feasibility, reliability, life, and operation quality.
1. What are the main functions of Slurry Valve?
①Functions such as regulating flow, regulating pressure, regulating temperature, cutting off media, and diverting and converging.
2. Why does the Slurry Valve oscillate during use?
①The spring stiffness of the Slurry Valve is insufficient, and the Slurry Valve output signal is unstable and changes sharply, which can easily cause the Slurry Valve to oscillate.
②In addition, the frequency of the selected valve is the same as the system frequency or the pipeline and base vibrate violently, causing the Slurry Valve to vibrate accordingly.
③ Improper selection, the Slurry Valve will have drastic changes in flow resistance, flow rate and pressure when working at a small opening. When it exceeds the stiffness of the valve, the stability deteriorates, and oscillation occurs in severe cases.
④ Since there are many reasons for the oscillation, specific problems should be analyzed specifically.
3. Why can't the double seal valve be used as a cut-off valve?
① The advantage of the double seat valve core is the force balance structure, which allows a large pressure difference, and its prominent disadvantage is that the two sealing surfaces cannot be in good contact at the same time, resulting in a large leakage.
② If it is artificially and forcibly used in the cut-off occasion, the effect is obviously not good, even if many improvements are made to it (such as double seal sleeve valve), it is not advisable.
4. What are the installation criteria for Slurry Valve?
① First of all, the installation of Slurry Valve should be strictly carried out in accordance with the provisions of the design drawings and design documents, and a full range of performance tests should be carried out before installation.
② The adaptability of the valve to the working environment should be taken into account, and the installation of Slurry Valve must ensure safety, performance, and easy operation and maintenance.
