⑥ Air source treatment triplet: including air pressure reducing valve, filter and oil mist device, which can stabilize and clean the air source and lubricate moving parts.

What are the uses of pneumatic butterfly valves?
Nowadays, pneumatic butterfly valves are used more and more widely. What I want to introduce to you today is the use of pneumatic butterfly valves.
1. Escort medium: if the Escort medium in the hose has the chemical property of acid or alkaline, which is prone to electrochemical reaction, the material of each part of the hose shall be reasonably selected according to the corrosion resistance parameter table of the hose material. Thermal shrinkage, external vibration and shock, alternating working conditions, lack of regular monitoring and maintenance, and inadequate management of pneumatic butterfly valves will also affect the service life of hoses.
2. Water hammer phenomenon, which is a pressure transient process caused by sudden change of medium activity state and sudden change of fluid momentum in the pipe, is a special oscillation phenomenon caused by unstable activities in the pipe. When the pressure wave of sharp rise and fall is transmitted through the pipeline, it will produce a noise similar to that when the pipeline is hit with a hammer, so it is also called water hammer. When water hammer occurs, the impact on the bend section of the pipeline becomes more severe. Therefore, the user should follow the requirements of the operating procedures, such as slowly heating, steadily pressurizing, reducing the change of instantaneous flow and pressure, and avoiding water hammer.
3. Corrosion. Pneumatic butterfly valves are generally made of stainless steel. The active anions in the medium are easy to damage the stainless steel passive film. Small corrosion holes appear on the base metal, which is the active center generated by pitting corrosion. The metal surface potential inside the etch hole is negative, and the metal surface potential outside the etch hole is positive, so the inside and outside of the hole form an active state-
The passive micro galvanic corrosion battery has the structure of large cathode and small anode area ratio, high anode current density, and rapid pitting deepening. The strength of corroded pneumatic butterfly valve is reduced, which is easy to cause failure when bearing internal pressure and tensile load. Therefore, for pneumatic butterfly valves used in corrosive environments, targeted materials should be selected, protection measures should be increased, and corrosion resistance should be improved.
4. Temperature, the rated working pressure of the pneumatic butterfly valve used at high temperature must be reduced according to the temperature correction coefficient of the working pressure of the pneumatic butterfly valve at high temperature, so as to ensure that the valve is stopped under safe conditions.
5. Fatigue failure. Under the dynamic working state, the pneumatic butterfly valve is often damaged by fatigue cracks under the cyclic load. Such damage is normal failure. In order to extend the service life, it is necessary to ensure that the hose is correctly designed, selected and installed, and that no additional stress such as twisting occurs to the hose.