Structure breakdown of pneumatic full rubber lined butterfly valve How to adjust if the valve is not automatically closed? Classify according to main parameters (I) Classify vacuum valves according to pressure. Valves whose working pressure is lower than standard atmospheric pressure. Low pressure valves with nominal pressure PN less than 1.6MPa. Medium pressure valve is a valve with a nominal pressure of PN 2.5~6.4 MPa. High pressure valve with nominal pressure of PN10.0~80.0MPa. Ultra high pressure valves with nominal pressure PN greater than 100MPa.
、 1、 According to what can electric butterfly valve have such a good sealing effect? Because it has a perfect line design similar to the sealing valve, it can ensure that no air will enter and play a good sealing role. Moreover, the design can also completely avoid the phenomenon that the electric switch butterfly valve cannot rotate because it is inferior to use for a long time.
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