The importance of selecting the type of regulating valve on the pvd coating machines. The regulating valve is an actuator in the automatic control system, and its application quality is reflected in the regulating quality of the system. The application quality of the regulating valve is related to three aspects:

(1) Correct selection (including calculations) - system designers;
(2) Product Quality - Production Plant
(3) Correct installation, use, and maintenance - users.
So, when we talk about quality, it's not just a matter of the production plant. It's a broad concept that includes system designers, manufacturers, and users. The following is a list of common application problems. If these problems can be handled well, it can be said that selecting a valve will not cause major quality accidents.
(1) Caliber calculation - if it is too small, it cannot meet Qmax. If it is too large, it will work with a small opening, resulting in poor adjustment performance and short lifespan.
(2) Check the △ P when closing - some do not check at all, resulting in the valve not closing tightly and not opening.
(3) The adjustable ratio R-R is too small to meet the range of flow variation.
(4) Determine spring range - involves spring range, initial working pressure, output force, stability, adjustment, etc.
(5) Material and Structure - Here is the most knowledgeable and excellent engineering designer
The selected valve structure and material should have a simple structure and the lowest price, while meeting the functional requirements
On the contrary, after spending a lot of money and even introducing products, it is still not good to use, and this cost can be reduced by 20-30 times.
If not used properly, the impact is even greater, causing economic losses and a decrease in production, and some even cannot be put into use.
Therefore, an experienced system designer knows the importance of valves on site, attaches great importance to the correct selection of valves from the beginning, and closely cooperates with us.
(6) Attachment - Guarantee and Intentional Compensation to the Subject.
The selection of regulating valves on the pvd coating machines is also a very important step. Choosing the appropriate regulating valve will ensure longer machine operation and lifespan in the later stage. Therefore, this step must also be given special attention.