The pneumatic switch ball valve can be divided into single acting pneumatic ball valve and double acting pneumatic ball valve. The double acting pneumatic ball valve switch requires air supply. The single acting pneumatic ball valve only needs air supply when it is opened or closed. When the air supply fails or the solenoid valve power fails, the valve will automatically return to its position due to the action of the spring.

Third, the steam drum is equipped with a steam pressure safety valve. Therefore, it is safe to open the front and rear selection valves of the steam pressure before and after the heat accumulator. The safety valve installed on the steam drum can be used as an extreme protection measure. Such measures should be taken when the production is abnormal and an accident is about to occur. The steam pressure regulating valve can not be protected with such extreme protection measures. It seems that the positive and negative action mode of the pneumatic control valve has a very important role. If it is not selected correctly, it will bring more trouble. I believe that you should understand this very well! For such a series of problems, we must understand them in detail.