Nony, pneumatic diaphragm regulating pneumatic butterfly valve share pneumatic valve to the noise

since excessive noise become the blow-down adjust the difficult problem of pneumatic valve, you can further discuss about the noise generation.
pneumatic valve adjustment pneumatic valve noise is due to the adjustment in the process of complete regulation, produce the permanent pressure loss caused by the results of the fluid turbulence. Adjust the pneumatic valve noise mainly comes from following aspects:
and mechanical vibration. Mechanical noise mainly comes from air turbulent flow in the valve impact to pneumatic trims, causing vibration and noise between the adjacent surface;
and aerodynamic noise. This is a fluid flowing through the throttle position, the direct result of mechanical energy is converted to sound energy.
and hydraulics noise. In this category is the most important of cavitation noise, the noise of other lighter can be ignored.