The key steps of the valve selection are "dynamic characteristics"

When selecting a control valve, we generally consider some traditional factors such as pressure rating, pressure drop, flowing medium, temperature, and cost. However, with the changes of the times and the continuous advancement of science and technology, valve design is also advancing with the times, and the cost-effective features of production processes have been greatly improved compared with before. This makes the importance of the traditional factors that had to be considered before greatly reduced, and the evaluation of dynamic characteristics has become a key factor in the selection of valves.

Here, we always emphasize that "dynamic characteristics" is the key to selecting the valve: if we only measure the valve, it is difficult to determine what performance the valve will exhibit under actual operating conditions. Traditional theory believes that careful adjustment of static factors will optimize valve performance, but the facts make us realize that this is not always the case.

Thousands of performance checks by researchers and manufacturers have led us to see that many living valves selected by considering conventional factors do not produce much expected results for optimal control loop performance. Professional investigations have shown that the valve's dynamic characteristics play an important role in reducing process variability. More data shows that in many processes, different valves reduce the variability of the process, even if the difference is small, can greatly increase production efficiency and reduce waste, and achieve huge economic benefits.

The traditional view is that the improvement of process optimization always comes from the upgrade of the control instrument in the control room. But according to the professional test data obtained, if we use the same control instrument, the dynamic characteristics of the valve will have a significant impact on the loop performance.