Secondly, attention should be paid to the selection of models. Many people know that the simple distinction between electric three-way ball valves includes the L-type and the T-type. The relative positions of the three outlets of these two types are different, and the different positions will also lead to different functions. For example, although the L-type has three outlets, not all three outlets can exchange and communicate with each other, Therefore, only gas or liquid can be distributed during use, while the three outlets of the T-type can communicate and exchange. Therefore, in addition to the distribution work, it also has the function of convergence. This wrong purchase will also affect the progress of the entire workflow, and even the need to re purchase or redesign the process will cause waste of time and cost. 　　　　

Thirdly, we want to repair the pneumatic switch ball valve. At this time, make sure that the valve is open, so that you can find out more easily what problems exist. Most of the time, if we don't have a clear understanding of the specific problems, it is very unfavorable for us to better maintain the use of the whole valve. Be sure to realize why the valve has problems, and find out the problems in time, which is also helpful for your maintenance.